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Disassembly/Assembly > Controller System > Removing the Control Panel Unit (MF4890dw/MF4880dw) > Procedure

Controller System

Removing the Control Panel Unit (MF4890dw/
MF4880dw)

■

Procedure

1)Open the reader unit [1] and remove the control panel support plate[2]

• 2 protrusions[3]

[1]

[2]

[3]

2) Remove the 8 screws[1] on the back side of the control panel unit.

[1]

F-4-313

F-4-314

3) Remove the control panel unit[1]
• 4 claws[2]
• 1 flat cable[3]

[3]

[1]

[2]

F-4-315

Summary of Contents for FAXPHONE L190

Page 1: ...l imageCLASS MF4890dw MF4880dw MF4770n imageCLASS D530 FAXPHONE L190 Troubleshooting July 13 2012 Revision 0 Product Overview Technical Overview Periodical Services Disassembly Assembly Adjustment Error Codes Service Mode Appendix ...

Page 2: ...information as the need arises In the event of major changes in the contents of this manual over a long or short period Canon will issue a new edition of this manual The following paragraph does not apply to any countries where such provisions are inconsistent with local law Trademarks The product names and company names used in this manual are the registered trademarks of the individual companies...

Page 3: ...switch closing the front door and closing the delivery unit door which results in supplying the machine with power 2 In the digital circuits 1 is used to indicate that the voltage level of a given signal is High while 0 is used to indicate Low The voltage value however differs from circuit to circuit In addition the asterisk as in DRMD indicates that the DRMD signal goes on when 0 In practically a...

Page 4: ...on 1 12 DADF 1 12 SADF 1 12 READER 1 13 Printer 1 13 Printer 1 14 Control Panel 1 14 MF4890dw MF4880dw MF4830d MF4820d 1 14 MF4780w MF4770n MF4750 MF4730 MF4720 MF4712 MF4710 1 16 D530 1 17 L418S L410 L190 1 18 2 Technical Overview Basic Configuration 2 2 Configuration function 2 2 Basic Sequence 2 2 Basic Sequence of Operation 2 2 Print Sequence 2 3 Controller System 2 4 Main Controller 2 4 Gener...

Page 5: ...20 Toner Cartridge Absence Presence Detection 2 21 Service Works 2 21 At parts replacement 2 21 Maintenance 2 21 Notes on service works 2 21 Fixing System 2 22 Overview Configuration 2 22 Overview 2 22 Main Parts of Fixing assembly 2 22 Various Control Mechanisms 2 23 Fixing Temperature Control 2 23 Protective Functions 2 23 Other Functions 2 24 Throughput Down Control 2 24 Service Works 2 25 At p...

Page 6: ...Unit MF4890dw 4880dw 4 18 Preparation 4 18 Procedure 4 18 Removing the Upper Cover MF4890dw 4880dw 4 18 Preparation 4 18 Procedure 4 18 Removing the Left Cover MF4870dn MF4830d 4 20 Procedure 4 20 Removing the Right Cover MF4870dn MF4830d 4 21 Procedure 4 21 Removing the Front Cover Unit MF4870dn MF4830d 4 22 Preparation 4 22 Procedure 4 22 Removing the Upper Cover MF4870dn MF4830d 4 22 Preparatio...

Page 7: ...ing the DADF Unit MF4890dw MF4880dw 4 45 Preparation 4 45 Procedure 4 45 Removing the DADF Pickup Unit MF4890dw MF4880dw 4 47 Preparation 4 47 Procedure 4 47 Removing the DADF Motor Unit MF4890dw MF4880dw 4 50 Preparation 4 50 Procedure 4 50 Removing the DADF Solenoid Unit MF4890dw MF4880dw 4 51 Preparation 4 51 Procedure 4 51 Removing the DADF Pickup Roller Unit MF4890dw MF4880dw 4 52 Preparation...

Page 8: ... D530 4 87 Preparation 4 87 Procedure 4 87 Removing the Flatbed Motor Unit D530 4 88 Preparation 4 88 Procedure 4 88 Removing the CIS Unit D530 4 90 Preparation 4 90 Procedure 4 90 Removing the SADF Unit and Reader Unit MF4780w MF4770n MF4750 MF4730 4 92 Preparation 4 92 Procedure 4 92 Removing the SADF Unit MF4780w MF4770n MF4750 MF4730 4 93 Preparation 4 93 Procedure 4 93 Removing the SADF Picku...

Page 9: ...oving the DADF Separation Pad L418S L410 L190 4 126 Preparation 4 126 Procedure 4 126 Removing the Copyboard Glass L418S L410 L190 4 128 Preparation 4 128 Procedure 4 128 Removing the Flatbed Motor Unit L418S L410 L190 4 130 Preparation 4 130 Procedure 4 130 Removing the DADF CIS Unit L418S L410 L190 4 132 Preparation 4 132 Procedure 4 132 Controller System 4 134 Removing the Control Panel Unit MF...

Page 10: ...tion 4 167 Procdeure 4 167 Removing the Fixing Delivery Paper Width Sensor PCB MF4870dn MF4830d 4 169 Preparation 4 169 Procedure 4 169 Removing the Toner Sensor and Multi Pickup Sensor Unit MF4870dn 4 172 Preparation 4 172 Procedure 4 172 Removing the Speaker MF4870dn 4 174 Preparation 4 174 Procedure 4 174 Removing the Control Panel Unit MF4820d 4 175 Procedure 4 175 Removing the Drive Belt MF48...

Page 11: ...n Controller PCB MF4780w MF4770n MF4750 MF4730 4 220 Preparation 4 220 Procedure 4 220 Removing the FAX NCU PCB MF4780w MF4770n MF4750 4 221 Preparation 4 221 Procedure 4 221 Removing the Wireless LAN PCB MF4780w 4 221 Preparation 4 221 Procedure 4 221 Removing the Paper Leading Edge Sensor PCB MF4780w MF4770n MF4750 MF4730 4 222 Preparation 4 222 Procedure 4 222 Preparation 4 224 Procedure 4 224 ...

Page 12: ...60 Procedure 4 260 Removing the Fixing Delivery Paper Width Sensor PCB L418S L410 L190 4 262 Preparation 4 262 Procedure 4 262 Removing the Toner Sensor and Multi Pickup Sensor Unit L418S L410 L190 4 265 Preparation 4 265 Procedure 4 265 Removing the Speaker L418S L410 L190 4 267 Preparation 4 267 Procedure 4 267 Laser Exposure System 4 268 Removing the Laser Scanner Unit MF4890dn MF4880dw 4 268 P...

Page 13: ...ding System 4 311 Removing the Pickup Unit MF4890dw MF4880dw 4 311 Preparation 4 311 Procedure 4 311 Removing the Pickup Tray Unit MF4890dw MF4880dw 4 314 Preparation 4 314 Procedure 4 314 Removing the Pickup Roller MF4890dw MF4880dw 4 316 Preparation 4 316 Procedure 4 316 Removing the Pickup Solenoid MF4890dw MF4880dw 4 317 Preparation 4 317 Procedure 4 317 Removing the Separation Pad MF4890dw MF...

Page 14: ...4 358 Procedure 4 358 Removing the Duplex Solenoid D530 4 359 Preparation 4 359 Procedure 4 359 Removing the Pickup Unit MF4780w MF4770n MF4750 MF4730 4 362 Preparation 4 362 Procedure 4 362 Removing the Pickup Tray Unit MF4780w MF4770n MF4750 MF4730 4 365 Preparation 4 365 Procedure 4 365 Removing the Pickup Roller MF4780w MF4770n MF4750 MF4730 4 367 Preparation 4 367 Procedure 4 367 Removing the...

Page 15: ... Troubleshooting Test Print 6 2 Test Print Function 6 2 Troubleshooting Items 6 3 Image Faults 6 3 Smudged Streaked 6 3 Version Upgrade 6 4 Overview 6 4 Preparation 6 4 System Requirements 6 4 Preparation 6 5 Downloading System Software 6 5 Log Collector 6 7 OutLine 6 7 Scope of Application 6 7 What to Prepare 6 7 Operation Procedure 6 7 Troubleshooting 6 8 7 Error Codes Overview 7 2 Error Codes 7...

Page 16: ...PBX DIAL TONE 8 14 PBX BUSY TONE 8 14 TESTMODE 8 15 SYSTEM 8 15 DRAM 8 15 SPEAKER 8 15 SCAN 8 15 ADJUST 8 15 SENSOR 8 15 ADFTEST 8 16 BOOKFEED 8 16 FAX 8 16 MODEM 8 16 FACULTY 8 17 PANEL 8 17 NETWORK 8 17 SSSW 8 17 Appendix Service Tools 9 2 Solvent Oil List 9 3 General Circuit Diagram 9 4 MF4890dw MF4880dw MF4870dn 9 4 MF4830d MF4820d 9 5 MF4780w MF4770n MF4750 9 6 MF4730 9 7 MF4720w MF4712 MF471...

Page 17: ... CDRH Provisions Laser Safety Toner Safety Notes on Handling Lithium Battery Notes on Assembly Disassembly Safety Precautions ...

Page 18: ...w to follow the labeling requirements prescribed in CDRH provisions Note that the wording included in labels is different depending on laser product classifications F 0 1 Laser Safety About Laser Beams Laser radiation may be hazardous to human The laser scanner unit mounted in this device is sealed in the protective housing and the external cover to prevent laser beams from leaking to the environm...

Page 19: ...Lithium Battery Replacing with wrong battery types may cause explosion Follow instructions to dispose used batteries properly Notes on Assembly Disassembly Follow the items below to assemble disassemble the device 1 Disconnect the power plug to avoid any potential dangers during assembling disassembling works 2 If not specially instructed reverse the order of disassembly to reinstall 3 Ensure to u...

Page 20: ...1 1 Product Overview Product Overview Product Lineups Features Product Specifications Name of Parts ...

Page 21: ...SADF Design ADF DADF Yes SADF Yes Yes Yes PLATEN Engine 2 Sided Yes Yes Yes Yes 1 Sided LAN port Yes Yes Yes Wireless LAN Yes Yes FAX Yes Yes Yes T 1 1 Model MF4820d Config 3in1 PLATEN Design ADF DADF SADF PLATEN Yes Engine 2 Sided Yes 1 Sided LAN port Wireless LAN FAX Model D530 MF4780w MF4770n MF4750 MF4730 Config 3in1 PLATEN 4in1 SADF WN MF4780w 4in1 SADF N MF4770n 4in1 SADF MF4750 3in1 SADF MF...

Page 22: ...Yes PLATEN Yes Engine 2 Sided Yes 1 Sided Yes LAN port Yes MF4780w MF4770n MF4750 Wireless LAN Yes MF4780w FAX Yes MF4780w MF4770n MF4750 Model MF4720w MF4712 MF4710 L418S L410 L190 Config 3in1 PLATEN 4in1 DADF Design ADF DADF Yes SADF Yes PLATEN Engine 2 Sided Yes 1 Sided Yes LAN port Wireless LAN FAX Yes T 1 3 T 1 4 Options Hand Set Only FAX Model ...

Page 23: ...ight source LED RGB Image scanning CIS color Photoreceptor OPC drum φ24 Light exposure method Laser beam exposure semiconductor laser Charging method Roller charging Developing method Toner projection developing method Transfer method Direct transfer to transfer member Separation method Curvature separation Paper feed method Pickup Tray Semilunar shaped Pickup Roller Pad separation method pressure...

Page 24: ...pacity of Multi purpose Tray 1 sheet Output tray stacking capacity About 100 sheets 60 to 80 g m2 Allowable environmental temperature 10 30 deg C Allowable humidity 20 80 Duplex method Yes Interface Standard Hi Speed USB USB Option none Hard Disk Standard none Option none Memory 4MB MF4890dw MF4880dw MF4870dn MF4830d MF4820d Ｄ 530 MF4780w MF4770n MF4750 MF4730 MF4720w MF4712 MF4710 8MB L418S L410 ...

Page 25: ...y DADF Ssize 50 Sheets Lsize 10 Sheets SADF Ssize 35 Sheets Lsize 10 Sheets Mixed paper reading None Document AE sensor None Document size sensor None Stamp function None Document feed speed at reading 100 129 34 mm s DADF 113 38 mm s SADF Document processing speed At A4 LTR 1 sided constant speed 22 ipm sheets min DADF 20 ipm sheets min SADF T 1 6 T 1 7 FAX Specifications MF4890dw MF4880dw MF4870...

Page 26: ...p Address book dialing Regular dialing with numeric keys Automatic redialing Manual redialing Sequential broadcast 250 destinations Receiving Automatic reception Remote reception by telephone Default ID 25 Reports TX Results Communication management report Auto output every 40 destinations RX Results 1 The Public Switched Telephone Network PSTN currently supports 28 8 Kbps modem speed or lower Not...

Page 27: ...ar Cover 7 Right Cover F 1 2 MF4870dn MF4830d MF4780w MF4770n MF4750 MF4730 Front Side 1 15 2 3 14 13 13 16 17 18 6 5 11 12 24 23 25 19 4 7 8 9 21 20 10 22 No Name No Name 1 SADF Rear Cover 14 Trailing Edge Paper Guides 2 Side Guide Plate Rear 15 Pickup Tray 3 Original Feed Tray 16 Left Cover 4 Side Guide Plate Front 17 SADF Front Cover 5 Original Feed Auxiliary Extension Tray 18 SADF Upper Cover ...

Page 28: ...wer Supply Cord Slot 6 Rear Cover 7 Right Cover F 1 4 MF4820d MF4720w MF4712 MF4710 Front Side 1 2 4 3 5 6 9 8 7 7 16 15 17 11 13 12 10 14 No Name No Name 1 Copyboard Cover 10 Left Cover 2 Control Panel Unit 11 Copyboard Glass 3 Delivery Tray 12 Delivery Stopper 4 Multi Purpose Tray Paper Guides 13 Delivery Auxiliary Tray 5 Multi Purpose Tray 14 Upper Cover 6 Tray Cover 15 Power Switch 7 Pickup Tr...

Page 29: ...Cover 4 Right Cover F 1 6 D530 Front Side 1 2 3 6 6 7 8 4 5 9 10 13 14 15 16 12 11 No Name No Name 1 Copyboard Cover 9 Left Cover 2 Control Panel Unit 10 Copyboard Glass 3 Delivery Tray 11 Delivery Auxiliary Tray 4 Front Under Cover 12 Delivery Stopper 5 Paper Level Display 13 Upper Cover 6 Pickup Tray Paper Guides 14 Power Switch 7 Trailing Edge Paper Guides 15 Front Cover Switch 8 Pickup Tray 16...

Page 30: ... 15 5 4 10 10 3 6 7 8 9 16 19 20 21 22 No Name No Name 1 DADF Rear Cover 14 DADF Front Cover 2 Side Guide Plate Rear 15 DADF Upper Cover 3 Side Guide Plate Front 16 Copyboard Glass 4 Original Feed Tray 17 Delivery Stopper 5 Original Delivery Tray 18 Delivery Auxiliary Tray 6 Control Panel Unit 19 Upper Cover 7 Delivery Tray 20 Power Switch 8 Front Under Cover 21 Front Cover Switch 9 Paper Level Di...

Page 31: ...o Name 1 USB Device Port 2 LAN Port 3 External Device Jack 4 Telephone Line Jack 5 Power Supply Cord Slot 6 Rear Cover 7 Right Cover F 1 10 Cross Section DADF 1 2 3 4 5 No Name 1 Registration roller 2 Pickup roller 3 Separation pad 4 Delivery roller 5 Separation roller SADF 2 3 4 1 No Name 1 Registration roller 2 Pickup roller 3 Separation pad 4 Delivery roller F 1 11 F 1 12 ...

Page 32: ...4880dw MF4870dn MF4830d MF4820 D530 L418S L410 L190 10 1 11 2 12 3 13 4 14 5 6 7 8 9 No Name No Name 1 Duplex Feed Unit 8 Pickup Tray 2 Duplex Feed Roller 9 Multi Purpose Tray 3 Fixing Pressure Roller 10 Photosensitive Drum 4 Fixing Film Unit 11 Pickup Roller 5 Delivery Roller 12 Separation Pad 6 Fixing Assembly 13 Feed Roller 7 Laser Scanner Unit 14 Transfer Roller F 1 14 ...

Page 33: ...MF4780w MF4770n MF4750 MF4730 MF4720w MF4712 MF4710 10 1 11 2 12 3 4 5 6 7 8 9 No Name No Name 1 Fixing Pressure Roller 7 Multi Purpose Tray 2 Fixing Film Unit 8 Photosensitive Drum 3 Delivery Roller 9 Pickup Roller 4 Fixing Assembly 10 Separation Pad 5 Laser Scanner Unit 11 Feed Roller 6 Pickup Tray 12 Transfer Roller F 1 15 Control Panel MF4890dw MF4880dw MF4830d MF4820d F 1 16 ...

Page 34: ...reset the settings key Press to scroll up or to increase the value key Press to scroll down or to decrease the value key Press to return to the previous screen or move the cursor to the left Press to decrease the volume while the fax ring tone sounds key Press to proceed to the next screen or move the cursor to the right Press to increase the volume while the fax ring tone sounds OK key Press to c...

Page 35: ...normal operation displays messages and prompts When adjusting the settings displays your selections text and numbers 4 Back key Press to return to the previous screen Reset key Press to reset the settings key Press to scroll up or to increase the value key Press to scroll down or to decrease the value key Press to return to the previous screen or move the cursor to the left Press to decrease the v...

Page 36: ... Panel D530 8 Scan PC1 key Scan PC2 key Press to send the scanned documents to the registered computer for each key Scan PC1 key Scan PC2 key Paper Save Copy key Press to copy with a preset setting to save paper Paper Save Copy key The function may not be available depending on model T 1 11 D530 F 1 18 ...

Page 37: ...n displays messages and prompts When adjusting the settings displays your selections text and numbers Reset key Resets the settings Back key Press to return to the previous screen 6 key Press to scroll up or to increase the value key Press to scroll down or to decrease the value key Press to return to the previous screen or move the cursor to the left key Press to proceed to the next screen or mov...

Page 38: ...cify or register various settings Report key Press to manually print reports and lists You can also specify whether to report automatically Image Quality key Press to select the image quality for copy or the scanning resolution for the sending document 2 Sided key Press to print on both sides of paper Numeric keys 0 9 Press to enter characters and numbers key Press to switch the character entry mo...

Page 39: ...l Overview Technical Overview Basic Configuration Controller System Document Exposure Feeder System Laser Exposure System Image Formation System Fixing System Pickup And Feeding System External And Controls System ...

Page 40: ...Purpose Remarks WAIT Wait From power ON until initial drive for main motor is completed To clear potential from the drum surface and to clean the transfer roller Also to bring the heater temperature up to the targeted temperature Detect whether the Toner cartridge is installed or not STBY Standby From the end of the WAIT period or the LSTR period until the print command is sent from the main contr...

Page 41: ...Masking emission Masking emission 1 3 Print temperature control Print command Print command Waiting for a print command 0 5 1 1 0 1 0 8 Max 4 1 1 1 Cleaning bias Cleaning bias Print bias Cleaning bias BD emission Forcible emission Controls at 80 C Relay 1 Print command Scanner motor Laser diode Main motor Pickup solenoid Leading edge sensor Fixing delivery sensor Primary charging bias DC Developin...

Page 42: ... CONVERTER FAX MODEM F 2 3 Engine Controller General description Engine controller is the circuit to control the operation sequence of the host machine and it is controlled by the CPU inside the engine controller When the power is turned ON and DC power is supplied through the low voltage power inside engine controller CPU starts the printer operation control Then CPU drives the loads such as lase...

Page 43: ...ical Overview Controller System Service Works Notes on service works Service Works At parts replacement No work is required for this product at parts replacement Maintenance No periodically replaced parts durable parts or periodical service is set for this product Notes on service works None ...

Page 44: ...l change of carriage shift speed image processing by Main controller PCB lens rod lens array CMOS sensor number of lines 1 line number of pixels 5148 pixels as total pixels 5107 pixels as effective pixels maximum document scanning width 216 mm CS drive control drive control by Reader motor document size detection none T 2 2 Major Components Followings are the major components for Document Exposure...

Page 45: ... through the copyboard glass and then delivered face down to the original delivery assembly Main 1 2 3 4 A0 A0 B0 B0 J12 SADF Motor F 2 6 DADF Pickup Feed Delivery Operation The Double side Auto Document Feeder DADF mounted onto this host machine is dedicated to stream reading 1 motor DADF motor is engaged in pickup feeding delivery At the start of copy fax scan the DADF motor is driven by the dri...

Page 46: ... of the Original Detected by the DES Document End Sensor The leading edge of the original that is fed pushes up the actuator activating the DES light shielded light transmitted and resulting in detection of the reach of the leading edge of original Furthermore when the trailing edge of the original passes the actuator position the actuator returns to the original position inactivating the DES ligh...

Page 47: ...m 1 In case of delay in reaching DS DES or stationary during scanning of original 2 In case DS DES is detected as ON at power on residual paper jam 3 In case of detecting original of which length is 400 mm or longer Operation after Detection of Jam The host machine stops scanning operation and displays CHECK DOCUMENT on the control panel No jam code is displayed In case of the model equipped with ...

Page 48: ...nical Overview Document Exposure Feeder System Service Works Notes on service works Service Works At parts replacement No work is required for this product at parts replacement Maintenance No periodically replaced parts durable parts or periodical service is set for this product Notes on service works None ...

Page 49: ...arts to rotate the Engine controller emits the laser forcibly using the Laser control signal causing the Engine controller to start rotation control for the Scanner motor 3 The Engine controller controls to keep a constant speed of rotation of the Scanner motor using the Scanner motor speed control signal 4 After the rotation speed of the Scanner motor reaches its target the Main controller sends ...

Page 50: ...on The laser driver IC executes laser control according to the combination of the CNT0 CNT1 CNT2 signals The following is the combination of the laser control signal CNT0 CNT1 CNT2 Operation mode CNT0 CNT1 CNT2 Details Standby L L L Laser control OFF Print H H H Can emit the laser according to the video signal LD1 forced ON L H L LD1 forcibly turned ON LD2 forced ON H L L LD2 forcibly turned ON LD...

Page 51: ... the laser driver emits LD2 forcibly The laser driver adjusts the LD2 laser intensity as in the case of LD1 and saves the adjusted laser intensity to the capacitor C18 1 Initial APC APC that is executed during initial rotation APC adjusts laser intensity and detects faults in the laser 2 Line space APC APC that is executed during printing Laser intensity for one line is adjusted before writing one...

Page 52: ...t machine are stopped 1 Fault in BD input At startup of the scanner BDI signal cannot be detected within 0 1 sec from the completion of forced acceleration of the scanner motor 2 Fault in startup During activating the scanner motor at startup of the scanner the motor rotation exceeds the specified range 98 3 to 101 7 3 Fault in control After startup of the scanner completes correctly BDI signal ex...

Page 53: ... supply VIDEO signal Main controller CPU Laser scanner unit Laser beam Fixing Film Pressure roller Transfer roller F 2 16 Print Process This explains the basic process of the operations that a printer executes for image formation The print process of this equipment is divided largely into 5 blocks 7 steps Toner images are formed on papers by executing the steps of each block in order The following...

Page 54: ...posure step 2 Transfer step 4 Primary charging step 1 Primary charging step 1 Exposed area Unexposed area Step 1 Primary charging For preparation of latent image formation the surface of photosensitive drum is charged with even negative potential In this primary charging the charge is applied from the primary charging roller directly to the photosensitive drum DC bias is applied to the primary cha...

Page 55: ...e developing blade An area on the photosensitive drum exposed with laser beam has higher potential than the developing cylinder the potential difference between the drum surface and the cylinder enables the toner to jump on the drum surface and makes them visible images AC bias superimposed with the development DC negative bias is applied to the developing cylinder Blade Developing cylinder AC bia...

Page 56: ...r roller Static charge eliminator Photosensitive drum Fixing Block This block applies pressure and heat to papers and the toner on them to fix toner images to the papers Step 6 Fixing This step employs on demand fixing that fixes toner images transferred to papers on the papers Fixing heater Fixing film Toner Media Pressure roller F 2 23 F 2 24 Drum Cleaning Block The drum cleaning block removes t...

Page 57: ... is a DC negative bias that is output to affix toner to the static latent images formed on the photosensitive drum This bias is a development DC and AC superimposed bias and generated by the development high voltage generating circuit in the high voltage power supply circuit The high voltage power supply circuit applies the generated developing bias to the developing cylinder at a specified timing...

Page 58: ...itions of sampling and remaining toner level judgment are the same as those mentioned above However in the case that toner Low is detected even at once during warm up rotation sequence toner Low is remained to be displayed MF4830d MF4820d D530 MF4730 MF4720w MF4712 MF4710 This equipment has no function of toner level detection Specification of Toner level display Toner level can be checked by pres...

Page 59: ...ing H it is judged that the Toner cartridge is present Engine controller PS751 L Toner cartridge detection flag Leading edge sensor detection flag PS751 PS751 H Toner cartridge Yes Toner cartridge No The leading edge sensor performs both this detection and paper feed detection Therefore the engine controller cannot make a judgment of Toner cartridge absent or jam occurrence when jam occurs The eng...

Page 60: ...S701 and the paper width sensor PS702 and then delivered to the delivery tray by the delivery roller M1 SL2 PS701 PS702 1 2 3 1 Delivery Roller 2 Fixing Film Unit 3 Fixing Pressure Roller PS701 Fixing delivery sensor PS702 Paper width sensor M1 Main motor F 2 28 Main Parts of Fixing assembly Engine controller FIXING HEATER DRIVE signal Fixing heater drive circuit Fixing heater safety circuit FIXIN...

Page 61: ...f engine controller monitors the thermistor TH1 temperature consistently When TH1 reaches approx 220 deg C CPU determines that the fixing heater is overheating and stops the fixing heater drive signal FSRD output and also turns OFF relays to shut the power supply to fixing heater 2 Protection function by fixing heater safety circuit Fixing heater safety circuit monitors the thermistor TH1 temperat...

Page 62: ...udged as frequency detection circuit error Processing after failure detection If the Main Motor is in driving state when Fixing Assembly failure is detected rotation of the motor is maintained for 300 msec after the machine moves in Fixing Assembly failure state Then drive systems Main Motor system Laser Scanner system high voltage system and fixing system are stopped immediately and the machine m...

Page 63: ... 4 ppm 16 to 20 6 ppm 8 ppm ー 4 ppm 21 to 30 6 ppm 8 ppm ー 4 ppm 31 to 40 4 ppm 7 ppm ー 4 ppm 41 to 75 4 ppm 6 ppm ー 4 ppm From 76 4 ppm 6 ppm ー 4 ppm Number of Fed Sheets 5 6 Full speed Half speed 1 to 55 20 ppm ー 56 to 110 16 ppm ー 111 to 120 13 ppm ー 121 to 150 11 ppm 12 ppm 151 to 250 10 ppm 10 ppm From 251 8 ppm 8 ppm Service Works At parts replacement No work is required for this product at ...

Page 64: ...tray Delivery tray Single sheet pick up tray Delivery roller Transfer roller Photosensitive drum Separation pad Fixing Pressure roller Duplex Feed roller Fixing Film PS702 PS751 Pickup roller PS701 F 2 31 Single Feed M1 SL1 Main controller Engine controller PS751 PS701 PS702 Delivery tray Delivery roller Fixing Pressure roller Multi purpose tray Single sheet pick up tray Transfer roller Photosensi...

Page 65: ... the fixing delivery sensor PS701 the paper width sensor PS702 They detect arrival and passing of papers If a paper does not reach or pass through each sensor within a specified time the engine controller judges this status as jam and notices the jam occurrence to the main controller PS701 Fixing delivery sensor PS702 Paper width sensor PS801 Leading edge sensor M1 Main motor SL1 Pickup solenoid S...

Page 66: ...ilm is 18 2π 57 2 mm the length of wrapping is more than one lap Considering paper looping sensor accuracy and thick paper delivery however the value cannot be made smaller F 2 34 B When there is a preceding paper 1 1165 2400 700 1400 OFF Paper Lead Edge Sensor Fixing Delivery Sensor ON OFF ON Jam paper Absence detection period When there is preceding paper at the delivery sensor PS701 700 1400 ms...

Page 67: ...the TOP sensor PS751 is long the paper path length depends on the paper quality and the stop time at the registration shutter prepared on the path for skew correction depends on the delivered paper Delivery Delay Jam during auto delivery A delivery delay jam is determined if the Paper Lead Edge Sensor PS751 detects presence of paper and the Fixing Delivery Sensor PS701 detects absence of paper at ...

Page 68: ...t of reversal if the delivery sensor PS701 does not detect the no paper status within 2570 5140 ms after paper detection a reverse stationary jam is determined Note This jam is determined if the delivery sensor PS701 keeps detecting sensor for the time of delivering LEGAL 30 mm Pickup Stationary Jam during auto delivery A pickup stationary jam is determined if the Paper Lead Edge Sensor PS751 dete...

Page 69: ... is not stable due to paper springing or other Initial Paper Jam during printing An initial paper jam is determined if either the Fixing Delivery Sensor PS701 or the Paper Width Sensor PS702 detects presence of paper immediately before the Print Main Motor started its rotation Door Open Jam A door open jam is determined when printing is interrupted due to the door open detection during printing wh...

Page 70: ...nical Overview Pickup And Feeding System Service Works Notes on service works Service Works At parts replacement No work is required for this product at parts replacement Maintenance No periodically replaced parts durable parts or periodical service is set for this product Notes on service works None ...

Page 71: ... occur due to load errors such as short circuit etc Thus when the DC power cannot be output from the low voltage circuit the protective function against overcurrent or overvoltage may be working Since the secondary SW is used as the power SW the power supply cord needs to be disconnected when fixing a trouble on the load side Also the circuit carries the 2 fuses FU201 FU202 as a preventive functio...

Page 72: ...nical Overview External And Controls System Service Works Notes on service works Service Works At parts replacement No work is required for this product at parts replacement Maintenance No periodically replaced parts durable parts or periodical service is set for this product Notes on service works None ...

Page 73: ...3 3 Periodical Services Periodical Services Periodically Replaced Parts Consumables Periodical Service Cleaning ...

Page 74: ...ables Consumables Periodical Services Consumables Consumables Periodically Replaced Parts Periodically Replaced Parts There is no periodically replaced part with this machine Consumables Consumables There is no consumable with this machine ...

Page 75: ...Clean it with a dry lint free paper 3 Delivery Roller Clean it with a dry lint free paper 4 Pickup Roller Clean it with a dry lint free paper 5 Separation Pad Clean the rubber part with a lint free paper 6 Feed Roller Clean it with a dry lint free paper 7 Transfer Roller Basically do not touch it with your hands or clean it When cleaning is absolutely necessary clean with a dry lint free paper Tak...

Page 76: ...er and wipe off the smudge with the soft dry cloth 6 ADF reading area Open the copyboard cover and wipe off the smudge with the soft dry cloth F 3 2 T 3 2 DADF 1 2 3 4 4 5 6 Cleaning parts Procedure 1 DADF Pickup Roller Unit Open the ADF and wipe off the smudge with the soft dry cloth 2 DADF Separation Pad Open the ADF and wipe off the smudge with the soft dry cloth 3 Delivery Roller Wipe off the ...

Page 77: ...sembly Disassembly Assembly List of Parts List of Connectors External Cover Interior Document Exposure Feeder System Controller System Laser Exposure System Image Formation System Fixing System Pickup And Feeding System ...

Page 78: ...g or transporting the machine be sure to remove the cartridge beforehand as needed However when the cartridge is removed from the machine be sure to put the Photosensitive Drum in a protective bag even in a short period of time to prevent the adverse effect of light 3 When assembling perform the disassembling procedure in reverse order unless otherwise specified 4 When assembling be sure to tighte...

Page 79: ... of Parts Main Unit Lists of SADF Unit List of Parts Main Unit Lists of DADF Unit 1 2 3 4 No Name Reference Remarks 1 Original Sensor 2 DADF Motor 3 Original Edge Sensor 4 DADF Solenoid F 4 1 Lists of SADF Unit 1 2 3 No Name Reference Remarks 1 Original Sensor 2 Original Edge Sensor 3 SADF Motor F 4 2 ...

Page 80: ... Disassembly Assembly List of Parts Duplex Printer Unit Lists of Motor Fan Lists of Reader Unit 1 2 No Name Reference Remarks 1 CIS Sensor 2 Reader Motor F 4 3 Duplex Printer Unit Lists of Motor Fan 1 2 3 No Name Reference Remarks 1 Main Motor 2 Main Fan Unit 3 Laser Scanner Unit F 4 4 ...

Page 81: ...rts Duplex Printer Unit List of Sensor Lists of Solenoid 1 2 No Name Reference Remarks 1 Duplex Solenoid 2 Pickup Solenoid F 4 5 List of Sensor 1 2 3 4 5 6 No Name Reference Remarks 1 Encoder Sensor 2 Multi Pickup Sensor 3 Toner Sensor 4 Paper Leading Edge Sensor 5 Paper Width Sensor 6 Fixing Delivery Sensor F 4 6 ...

Page 82: ...y List of Parts Duplex Printer Unit List of Heater Thermoswitch Thermistor List of Switch and Speaker 1 2 3 4 No Name Reference Remarks 1 Speaker 2 Power Switch 3 Speaker L418S L410 L190 4 Door Switch F 4 7 List of Heater Thermoswitch Thermistor 1 2 3 No Name Reference Remarks 1 Thermoswitch 2 Fixing Heater 3 Thermistor F 4 8 ...

Page 83: ...ame Reference Remarks 1 Control Panel PCB 2 Duplex Driver PCB 3 Motor Driver PCB 4 Laser Driver PCB 5 WiFi Module 6 Switch PCB 7 Off Hook PCB 100V Model Only 8 FAX NCU PCB 9 Main controller PCB 10 Engine Controller PCB 11 Paper Leading Edge Sensor PCB 12 Fixing Delivery Paper Width Sensor PCB F 4 9 Single sided Printer Unit List of Motor Fan 1 2 No Name Reference Remarks 1 Main Motor 2 Laser Scann...

Page 84: ...ist of Parts Single sided Printer Unit List of Solenoid List of Solenoid 1 No Name Reference Remarks 1 Pickup Solenoid F 4 11 List of Sensor 1 2 3 4 5 6 No Name Reference Remarks 1 Encoder Sensor 2 Multi Pickup Sensor 3 Toner Sensor 4 Paper Leading Edge Sensor 5 Paper Width Sensor 6 Fixing Delivery Sensor F 4 12 ...

Page 85: ...embly Assembly List of Parts Single sided Printer Unit List of Solenoid List of Switch and Speaker 1 2 3 No Name Reference Remarks 1 Speaker 2 Power Switch 3 Door switch F 4 13 List of Heater Thermoswitch Thermistor 1 2 3 No Name Reference Remarks 1 Thermoswitch 2 Fixing Heater 3 Thermistor F 4 14 ...

Page 86: ...r Unit List of Solenoid List of PCB 7 9 1 6 2 3 8 4 5 11 10 No Name Reference Remarks 1 Control Panel PCB 2 Motor Driver PCB 3 Laser Driver PCB 4 WiFi Module PCB 5 Switch PCB 6 Off Hook PCB 100V Model Only 7 FAX NCU PCB 8 Main Controller PCB 9 Engine Controller PCB 10 Paper Leading Edge Sensor PCB 11 Fixing Delivery Paper Width Sensor PCB F 4 15 ...

Page 87: ...tor J No Name Remarks J15 Main Controller PCB J1402 DES Sensor J15 Main Controller PCB J1403 DS Sensor J12 Main Controller PCB J1401 DADF Motor J8 Main Controller PCB J8 DADF Solenoid F 4 16 T 4 1 SADF Unit J15 J12 J1402 J1403 J No Name Relay Connector J No Name Remarks J15 Main Controller PCB J1402 DES Sensor J15 Main Controller PCB J1403 DS Sensor J12 Main Controller PCB J12 SADF Motor T 4 2 ...

Page 88: ...ay Connector J No Name Remarks J1101 Duplex Driver PCB J1154 Motor Driver PCB J1102 Duplex Driver PCB J1102 Duplex Solenoid J1103 Duplex Driver PCB J1103 Main Fan Unit J1151 Motor Driver PCB J571 Engine Controller PCB J1153 Motor Driver PCB J802 Laser Scanner Motor J801 Laser Driver PCB J542 Engine Controller PCB J101 Engine Controller PCB Fixing Film Unit J551 Engine Controller PCB J751 Paper Lea...

Page 89: ...902 Engine Controller PCB J6 Main Controller PCB J905 Engine Controller PCB Multi Pickup Sensor J3 Memory Tag Cartridge J605 Main Controller PCB J1305 Pseudo CI PCB Model with FAX 100V J602 Main Controller PCB J1204 FAX NCU PCB Model with FAX MF4890dw MF4880dw MF4870dn L418S L410 L190 J601 Main Controller PCB J1201 FAX NCU PCB Model with FAX MF4890dw MF4880dw MF4870dn L418S L410 L190 J7 Main Contr...

Page 90: ...gine Controller PCB J1153 Motor Driver PCB J802 Laser Scanner Motor J801 Laser Driver PCB J542 Engine Controller PCB J101 Engine Controller PCB Fixing Film Unit J551 Engine Controller PCB J751 Paper Leading Edge Sensor J552 Engine Controller PCB J701 Fixing Delivery Paper Width Sensor PCB J562 Engine Controller PCB J562 Pickup Solenoid J702 Fixing Delivery Paper Width Sensor PCB Fixing Film Unit F...

Page 91: ...J6 Main Controller PCB J905 Engine Controller PCB Multi Pickup Sensor J3 Memory Tag Cartridge J605 Main Controller PCB J1305 Pseudo CI PCB Model with FAX 100V J602 Main Controller PCB J1204 FAX NCU PCB Model with FAX MF4780w MF4770n MF4750 J601 Main Controller PCB J1201 FAX NCU PCB Model with FAX MF4780w MF4770n MF4750 J7 Main Controller PCB J401 Control Panel PCB J1 Main Controller PCB J4 Wireles...

Page 92: ...he Left Cover MF4890dw 4880dw Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 21 1 Remove the screw black TP 1 1 F 4 22 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 1 1 2 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 3 hooks 4 x2 1...

Page 93: ...er MF4890dw 4880dw Note The locations of the 5 right cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 25 1 Remove the screw black TP 1 1 F 4 26 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 2 1 1 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 3 hooks 4 x2 1 3 4 2 F 4...

Page 94: ...rocedure 1 Remove the front cover unit 1 connector 2 2 protrusions 3 2 claws 4 4 3 2 1 4 3 F 4 29 Removing the Upper Cover MF4890dw 4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit Procedure 1 Open the delivery tray 1 2 Remove the cartridge arm 2 3 Remove the 2 fixing pressure arms 3 Caution When assembling dis...

Page 95: ...bly Assembly External Cover Interior Removing the Upper Cover MF4890dw 4880dw Procedure 4 Raise the delivery tray 1 vertically and remove it 1 5 Remove the upper cover 1 4 screws black TP 2 x4 1 2 2 F 4 31 F 4 32 Caution Be sure to put the cartridge arm 1 through the hole A of the upper cover when installing 1 A F 4 33 ...

Page 96: ... Cover MF4870dn MF4830d Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 34 1 Remove the screw black TP 1 1 F 4 35 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 1 1 2 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 3 hooks 4 ...

Page 97: ...ht Cover MF4870dn MF4830d Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 38 1 Remove the screw black TP 1 1 F 4 39 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 2 1 1 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 3 hooks ...

Page 98: ...Procedure 1 Remove the front cover unit 1 connector 2 2 protrusions 3 2 claws 4 4 3 2 1 4 3 F 4 42 Removing the Upper Cover MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit Procedure 1 Open the delivery tray 1 2 Remove the cartridge arm 2 3 Remove the 2 fixing pressure arms 3 Caution When assembling d...

Page 99: ...bly Assembly External Cover Interior Removing the Upper Cover MF4870dn MF4830d Procedure 4 Raise the delivery tray 1 vertically and remove it 1 5 Remove the upper cover 1 4 screws black TP 2 x4 1 2 2 F 4 44 F 4 45 Caution Be sure to put the cartridge arm 1 through the hole A of the upper cover when installing 1 A F 4 46 ...

Page 100: ...ocedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 47 1 Remove the screw black TP 1 1 F 4 48 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside 2 x3 1 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 6 Remove the left cover 3 3 hooks 4 x2...

Page 101: ...Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 51 1 Remove the screw black TP 1 1 F 4 52 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 1 2 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 6 Remove the right cover 3 3 hooks 4...

Page 102: ... Remove the front cover unit 1 2 screws 2 1 connector 3 2 claws 4 1 4 3 x2 4 2 F 4 55 Removing the Upper Cover MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit Procedure 1 Open the delivery tray 1 2 Remove the cartridge arm 2 3 Remove the 2 fixing pressure arms 3 Caution When assembling disassembling the...

Page 103: ...bly Assembly External Cover Interior Removing the Upper Cover MF4820d Procedure 4 Raise the delivery tray 1 vertically and remove it 1 5 Remove the upper cover 1 6 screws black TP 2 2 x6 1 2 F 4 57 F 4 58 Caution Be sure to put the cartridge arm 1 through the hole A of the upper cover when installing 1 A F 4 59 ...

Page 104: ...re Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 60 1 Remove the screw black TP 1 1 F 4 61 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside 2 x3 1 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 6 Remove the left cover 3 3 hooks 4 x2 2 2 ...

Page 105: ...dure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 64 1 Remove the screw black TP 1 1 F 4 65 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 1 2 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 6 Remove the right cover 3 3 hooks 4 x2 1...

Page 106: ...move the front cover unit 1 2 screws 2 1 connector 3 2 claws 4 1 4 3 x2 4 2 F 4 68 Removing the Upper Cover D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit Procedure 1 Open the delivery tray 1 2 Remove the cartridge arm 2 3 Remove the 2 fixing pressure arms 3 Caution When assembling disassembling the upper...

Page 107: ...bly Assembly External Cover Interior Removing the Upper Cover D530 Procedure 4 Raise the delivery tray 1 vertically and remove it 1 5 Remove the upper cover 1 6 screws black TP 2 2 x6 1 2 F 4 70 F 4 71 Caution Be sure to put the cartridge arm 1 through the hole A of the upper cover when installing 1 A F 4 72 ...

Page 108: ...he Left Cover MF4780w MF4770n MF4750 MF4730 Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 73 1 Remove the screw black TP 1 1 F 4 74 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 1 1 2 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 uppe...

Page 109: ...he Right Cover MF4780w MF4770n MF4750 MF4730 Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 77 1 Remove the screw black TP 1 1 F 4 78 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 2 1 1 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upp...

Page 110: ... right cover Procedure 1 Remove the front cover unit 1 connector 2 2 protrusions 3 2 claws 4 4 3 2 1 4 3 F 4 81 Removing the Upper Cover MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit Procedure 1 Open the delivery tray 1 2 Remove the cartridge arm 2 3 Remove the 2 fixing pressure arms 3...

Page 111: ...bly Assembly External Cover Interior Removing the Upper Cover MF4780w MF4770n MF4750 MF4730 Procedure 4 Raise the delivery tray 1 vertically and remove it 1 5 Remove the upper cover 1 4 screws black TP 2 x4 1 2 2 F 4 83 F 4 84 Caution Be sure to put the cartridge arm 1 through the hole A of the upper cover when installing 1 A F 4 85 ...

Page 112: ...720w MF4712 MF4710 Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 86 1 Remove the screw black TP 1 1 F 4 87 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside 2 x3 1 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 6 Remove the left...

Page 113: ...F4720w MF4712 MF4710 Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 90 1 Remove the screw black TP 1 1 F 4 91 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside x3 1 2 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 6 Remove the ri...

Page 114: ...r Procedure 1 Remove the front cover unit 1 2 screws 2 1 connector 3 2 claws 4 1 4 3 x2 4 2 F 4 94 Removing the Upper Cover MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit Procedure 1 Open the delivery tray 1 2 Remove the cartridge arm 2 3 Remove the 2 fixing pressure arms 3 Caution When a...

Page 115: ...bly Assembly External Cover Interior Removing the Upper Cover MF4720w MF4712 MF4710 Procedure 4 Raise the delivery tray 1 vertically and remove it 1 5 Remove the upper cover 1 6 screws black TP 2 2 x6 1 2 F 4 96 F 4 97 Caution Be sure to put the cartridge arm 1 through the hole A of the upper cover when installing 1 A F 4 98 ...

Page 116: ...over L418S L410 L190 Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 99 1 Remove the screw black TP 1 1 F 4 100 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside 2 1 x3 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 3 hooks 4 x2 2...

Page 117: ... Cover L418S L410 L190 Procedure Note The locations of the 5 left cover claws 1 and 3 hooks 2 are shown here 1 2 1 F 4 103 1 Remove the screw black TP 1 1 F 4 104 2 Remove the 2 rear claws 1 3 Place the machine with its right side down and remove the claw 2 on the underside 2 x3 1 4 Return the host machine to its original position 5 Open the reader unit 1 and remove the 2 upper claws 2 3 hooks 4 4...

Page 118: ...cedure 1 Remove the front cover unit 1 connector 2 2 protrusions 3 2 claws 4 4 3 x2 4 1 2 F 4 107 Removing the Upper Cover L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit Procedure 1 Open the delivery tray 1 2 Remove the cartridge arm 2 3 Remove the 2 fixing pressure arms 3 Caution When assembling dis...

Page 119: ...y Assembly External Cover Interior Removing the Upper Cover L418S L410 L190 Procedure 4 Raise the delivery tray 1 vertically and remove it 1 5 Remove the upper cover 1 4 screws black TP 2 2 x6 1 2 F 4 109 F 4 110 Caution Be sure to put the cartridge arm 1 through the hole A of the upper cover when installing 1 A F 4 111 ...

Page 120: ...w Preparation 1 Remove the left cover Procedure 1 Remove the 2 grounding wires 1 1 screw black TP 2 Disconnect the 3 connectors 3 and free the grounding wire and the harnesses from the harness guide A x4 1 A 2 3 3 Remove the ferrite core 1 and disconnect the 2 flat cables from the harness guide A F 4 112 1 A 2 x2 4 Remove the DADF unit and reader unit 2 claws 2 Caution When placing the removed cop...

Page 121: ...eader unit secure the 2 hinge arm claws 1 to the 2 hooks 2 of the reader unit 2 1 2 1 Removing the DADF Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit Procedure 1 Remove the connector cover 1 and plate 2 and remove the harness from the guide A 4 claws 3 Caution When placing the removed copyboard cover and reader unit on the desk floor etc be caref...

Page 122: ...der System Removing the DADF Unit MF4890dw MF4880dw Procedure Caution Be sure to hold the connector cover when removing it 1 2 3 3 3 A x4 Caution Before installing the connector cover be sure to store the harness grounding wire and flat cable in the A part A 2 Release the lock 1 on the lower left front side of the reader unit and open the DADF unit 1 2 F 4 115 ...

Page 123: ...e the DADF unit 1 by lift it up and then raising it vertically 1 Caution When installing the DADF unit be careful not to damage the harnesses with A part F 4 117 F 4 116 Removing the DADF Pickup Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit Procedure 1 Open the DADF pickup tray and DADF upper cover 2 1 2 Remove the DADF upp...

Page 124: ...Caution When assembling the DADF upper front cover align the 2 hooks 1 at left side to DADF front cover hole A to install the cover 1 A F 4 119 3 Open the DADF tray 1 until it stops Then release the claw by pushing the hook 2 in the direction of the arrow A with a flat blade screwdriver and move the tray in the direction of the arrow 1 2 3 4 Open the DADF tray 1 to the position shown in the figure...

Page 125: ...ent Exposure Feeder System Removing the DADF Pickup Unit MF4890dw MF4880dw Procedure 5 Remove the DADF upper rear cover 1 1 boss 2 3 hooks 3 1 2 3 3 6 Remove the DADF upper cover 1 2 shafts 2 1 1 2 2 F 4 122 F 4 123 7 Remove the DADF unit communication cable 1 from the harness guide A x5 1 A 8 Remove the DADF unit 5 screws 2 x5 1 2 2 2 F 4 124 F 4 125 ...

Page 126: ...DF Motor Unit MF4890dw MF4880dw Procedure Removing the DADF Motor Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit Procedure 1 Open the DADF pickup tray and DADF upper cover 1 2 2 Remove the DADF upper rear cover 1 1 boss 2 3 hooks 3 F 4 126 1 2 3 3 3 Remove the DADF motor 1 1 connector 2 1 screw 3 1 2 3 F 4 127 F 4 128 ...

Page 127: ...r unit 3 Remove the DADF unit 4 Remove the DADF pickup unit 5 Remove the DADF motor unit Procedure Caution Gently remove the DADF solenoid unit to prevent the gear phase from becoming displaced 1 Remove the DADF solenoid unit 1 1 e ring 2 2 screws 3 1 harness band 4 4 x2 2 3 1 F 4 129 Caution When assembling the DADF solenoid unit be sure to put the solenoid shaft 1 through the hole A on the solen...

Page 128: ...ocedure Removing the DADF Pickup Roller Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the pickup unit Procedure 1 Remove the gear 1 bushing 2 2 e rings 3 and bushing 4 Caution Do not touch the pickup roller surface 1 1 1 2 3 4 3 2 Remove the DADF pickup roller unit 1 1 3 Remove the spring 1 on the back side of the ...

Page 129: ...F4890dw MF4880dw Procedure 4 Remove the bushing 1 pin 2 and 2 e rings 3 Caution When disassembling assembling take care not to lose the plate spring 1 and gear 2 2 1 3 1 2 F 4 133 5 Pull out pickup roller shaft 1 and remove the pickup roller 2 bushing A bushing B and gear 3 2 A B 3 1 Note When pulling out the pickup roller shaft 1 be sure to align the boss 2 of the roller shaft with the hole on th...

Page 130: ... Remove the pickup roller unit 1 pickup roller shaft 2 pickup roller 2 3 1 bushing A 1 bushing B 1 gear 4 1 3 A B 4 2 F 4 135 Removing the DADF Separation Pad MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the pickup unit Procedure 1 Remove the DADF pickup upper cover 1 and free the harness from the connector 2 and the h...

Page 131: ... MF4890dw MF4880dw Procedure 2 Remove the separation pad unit 1 2 claws 2 2 protrusions 3 Caution Be sure to hold the separation pad unit with your fingers when releasing its 2 protrusions 3 3 3 1 3 x2 2 3 F 4 137 3 Remove the separation pad 1 2 hooks 2 Caution Do not touch the pad surface 1 When disassembling assembling take care not to lose the spring 2 on the back side of the separation pad 1 2...

Page 132: ...following steps to install it 1 Install the spring 1 to the boss 2 on the back side of the separation pad 1 2 2 Install the shaft 1 of the separation pad unit to the A part on the back side of the DADF pickup upper cover A 1 3 Install the spring to the protrusion 1 of the DADF pickup upper cover 1 4 Turn the DADF pickup upper cover over to the back and install the separation pad cover 1 x2 1 2 2 3...

Page 133: ... cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit Procedure 1 Remove the 4 screws TP 1 x4 1 1 1 2 Remove the copyboard guide holder 1 1 claw 2 1 protrusions 3 1 3 2 F 4 139 F 4 140 3 Remove the reader upper cover 1 6 claws 2 1 hook 3 x6 1 2 2 2 2 3 Caution Place the detached copyboard glass cover on a cloth etc to avoid damaging the bottom sheet When removing the copyboard glass...

Page 134: ...4880dw Procedure 1 F 4 142 Removing the Flatbed Motor Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the copyboard glass take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the copyboard glass do not touch the copy reading a...

Page 135: ...90dw MF4880dw Procedure 1 Move the CIS unit 1 1 2 Move the gear 1 and remove the belt 2 from the gear 3 Caution Grease is applied on the shaft 1 of the contact sensor so be careful not to let the belt 2 come in contact with the shaft 1 2 F 4 143 2 3 1 3 Remove the guide cover 1 1 4 Free the harness 1 and the grounding wire 2 from the hole A of the reader unit and the harness guide B 1 2 A B F 4 14...

Page 136: ...move the flatbed motor unit 1 2 screws 2 x2 1 2 F 4 147 Removing the DADF CIS Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the CIS unit take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the CIS unit do not touch the copy...

Page 137: ...ure Feeder System Removing the DADF CIS Unit MF4890dw MF4880dw Procedure 1 Move the CIS unit 1 1 2 Remove 2 spacers 1 and flat cable 2 1 guide A 1 2 A F 4 148 F 4 149 3 Remove the CIS unit 1 2 shafts 2 1 2 Caution If the CIS unit comes off be sure to align the tooth 1 on the belt with the tooth 2 on the bottom of the CIS unit to install the unit 2 1 F 4 150 ...

Page 138: ...move the left cover Procedure 1 Remove the 2 grounding wires 1 1 screw black TP 2 Disconnect the 3 connectors 3 and free the grounding wire and the harnesses from the harness guide A x3 1 A 2 3 3 Remove the ferrite core 1 and disconnect the 2 flat cables from the harness guide A 1 A 2 x2 F 4 151 F 4 152 4 Remove the DADF unit and reader unit 2 claws 2 Caution When placing the removed copyboard cov...

Page 139: ...F4830d Procedure Caution When installing the DADF unit and reader unit secure the 2 hinge arm claws 1 to the 2 hooks 2 of the reader unit 2 1 2 1 Removing the SADF Unit MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit Procedure 1 Remove the connector 1 1 hook 2 2 claws 3 Note The location of hook 2 and the 2 claws 3 of the connector cover are shown here 3...

Page 140: ... Unit MF4870dn MF4830d Procedure Caution Be sure to hold the connector cover when removing it x2 2 3 1 Caution Before installing the connector cover be sure to store the harness grounding wire and flat cable in the A part A 2 Free the reader harness 1 from the cut off A A 1 1 3 Release the lock 1 on the lower left front side of the reader unit and open the SADF unit 2 1 F 4 154 F 4 155 ...

Page 141: ...e sure to avoid damaging the bottom sheet when placing the removed SADF unit 1 2 Caution When installing the DADF unit be careful not to damage the harnesses with A part F 4 157 F 4 156 Removing the SADF Pickup Unit MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit Procedure 1 Open the SADF pickup tray 1 and remove the SADF pickup tr...

Page 142: ...es 3 Caution When releasing the 2 claws 2 on the SADF front cover be careful not to put too much force otherwise they may get damaged x2 3 2 1 Note The following shows the 2 claws 2 and 2 bosses 3 of the SADF front cover 3 3 2 F 4 160 4 Free the boss 1 and open the SADF upper cover 2 by the amount for which the boss is freed 2 1 5 Free the harness 1 from the guide A and remove the 4 screws 2 on th...

Page 143: ...ution When install the SADF upper cover be sure that the guide 1 does not get inside the A part 1 A Removing the SADF Motor Unit MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit Procedure 1 Open the SADF pickup tray 1 and remove the SADF pickup tray 2 shafts 2 1 2 2 2 Open the SADF upper cover 1 and remove the SADF rear cover 2 3 cl...

Page 144: ...n MF4830d Procedure 3 Remove the tube 1 protecting the harness 2 harnesses bands 2 1 2 4 Remove the SADF motor 1 2 screws 2 x2 2 1 F 4 166 F 4 167 Removing the SADF Pickup Roller 1 2 MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the SADF pickup unit Procedure 1 Remove the rib 1 1 screw 2 Caution Do not touch the pickup r...

Page 145: ...osure Feeder System Removing the SADF Pickup Roller 1 2 MF4870dn MF4830d Procedure 2 Remove the SADF upper cover 1 2 shafts 2 1 2 3 Remove the gear 1 bushing 2 2 e rings 3 and bushing 4 Caution Do not touch the pickup roller surface 1 1 F 4 169 4 Remove the pickup roller unit 1 1 1 5 Remove the spring 1 on the back side of the pickup roller unit 1 F 4 170 F 4 171 ...

Page 146: ... 1 2 MF4870dn MF4830d Procedure 6 Remove the bushing 1 pin 2 and 2 e rings 3 3 1 2 7 Pull out the pickup roller shaft 1 and remove the pickup roller 2 bushing 3 bushing 4 and gear 5 2 A B 3 1 F 4 172 F 4 173 8 Remove the pickup roller unit 2 1 1 pickup roller shaft2 2 1 pickup roller 2 3 1 bushing 4 1 bushing 5 1 3 A B 4 2 Caution When disassembly assembly be careful not to lose the plate 1 and ge...

Page 147: ...MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the SADF pickup unit Procedure 1 Remove the SADF pickup upper cover 1 and free the harness from the connector 2 and the harness guide A 4 screws 3 1 2 A x4 3 F 4 175 2 Remove the separation pad unit 1 2 claws 2 2 protrusions 3 Caution Be sure to hold the separation pad unit w...

Page 148: ...ration pad 1 2 hooks 2 Caution Do not touch the pad surface 1 When disassembling assembling take care not to lose the spring 2 on the back side of the separation pad 1 2 2 2 1 F 4 177 Caution When the spring 1 comes off go through the following steps to install it 1 Install the spring 1 to the boss 2 on the back side of the separation pad 1 2 2 Install the shaft 1 of the separation pad unit to the...

Page 149: ...e Feeder System Removing the SADF Separation Pad MF4870dn MF4830d Procedure 3 Install the spring to the protrusion 1 of the SADF pickup upper cover 1 4 Turn the SADF pickup upper cover over to the back and install the separation pad cover 1 2 hooks 2 2 claws 3 x2 1 2 2 3 3 5 Turn the SADF pickup upper cover over to the front and push in the separation pad unit 1 1 ...

Page 150: ...t cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit Procedure 1 Remove the 4 screws TP 1 x4 1 1 2 Remove the copyboard guide holder 1 1 claw 2 1 protrusions 3 1 3 2 F 4 178 F 4 179 3 Remove the reader upper cover 1 6 claws 2 1 hook 3 x6 1 2 3 2 Caution Place the detached copyboard glass cover on a cloth etc to avoid damaging the bottom sheet When removing the copyboard glass take...

Page 151: ...4830d Procedure 1 F 4 181 Removing the Flatbed Motor Unit MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the copyboard glass take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the copyboard glass do not touch the copy reading are...

Page 152: ...70dn MF4830d Procedure 1 Move the CIS unit 1 1 2 Move the gear 1 and remove the belt 2 from the gear 3 Caution Grease is applied on the shaft 1 of the contact sensor so be careful not to let the belt 2 come in contact with the shaft 1 2 F 4 182 2 3 1 3 Remove the guide cover 1 1 4 Free the harness 1 and the grounding wire 2 from the hole A of the reader unit and the harness guide B 1 2 A B F 4 183...

Page 153: ...emove the flatbed motor unit 1 2 screws 2 x2 1 2 F 4 186 Removing the SADF CIS Unit MF4870dn MF4830d Procedure 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the CIS unit take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the CIS unit do not touch the copy r...

Page 154: ...ure Feeder System Removing the SADF CIS Unit MF4870dn MF4830d Procedure 1 Move the CIS unit 1 1 2 Remove 2 spacers 1 and flat cable 2 1 guide A 1 2 A F 4 187 F 4 188 3 Remove the CIS unit 1 2 shafts 2 1 2 Caution If the CIS unit comes off be sure to align the tooth 1 on the belt with the tooth 2 on the bottom of the CIS unit to install the unit 2 1 F 4 189 ...

Page 155: ...ving the Copyboard Cover MF4820d Procedure 1 Remove the copyboard cover 1 1 F 4 190 Removing the Copyboard Cover and Reader Unit MF4820d Preparation 1 Remove the left cover Procedure 1 Remove the 1 grounding wires 1 1 screw black TP 2 Disconnect the connectors 3 and free the grounding wire and the harnesses from the harness guide A 1 A 2 3 3 Remove the ferrite core 1 and disconnect the 2 flat cabl...

Page 156: ...oard Cover and Reader Unit MF4820d Procedure 4 Remove the copyboard cover and reader unit 2 claws 2 Caution When placing the removed copyboard cover and reader unit on the desk floor etc be careful not to get the flat cable and harnesses trapped under them x2 1 2 F 4 193 Caution When mounting the reader unit and copyboard cover fix the 2 hinge arm claws 1 to the 2 latches 2 of the reader unit 2 1 ...

Page 157: ...paration 1 Remove the copyboard cover 2 Remove the control panel unit Procedure 1 Remove the 2 screws 1 x2 1 2 Remove the reader upper cover 1 6 claw 2 x6 1 2 2 2 F 4 194 F 4 195 3 Remove the copyboard glass 1 Caution Place the detached copyboard glass cover on a cloth etc to avoid damaging the bottom sheet When removing the copyboard glass take care not to touch the glass surface If the surface b...

Page 158: ...pyboard cover 3 Remove the control panel 4 Remove the copyboard glass Procedure Caution When assembling disassembling the copyboard glass take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the copyboard glass do not touch the copy reading area A of the CIS unit 1 A 1 Move the CIS unit 1 1 2 Move the gear 1 and remove the belt 2 from the gear 3 Caution Grease is applied on...

Page 159: ...bly Assembly Document Exposure Feeder System Removing the Flatbed Motor Unit MF4820d Procedure 2 3 1 3 Remove the guide cover 1 1 4 Free the harness 1 and the grounding wire 2 from the hole A of the reader unit and the harness guide B 1 2 A B F 4 198 F 4 199 F 4 200 5 Remove the flatbed motor unit 1 2 screws 2 x2 1 2 F 4 201 ...

Page 160: ... Unit MF4820d Preparation 1 Remove the copyboard cover 2 Remove the control panel unit 3 Remove the copyboard glass Procedure Caution When assembling disassembling the CIS unit take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the CIS unit do not touch the copy reading area A of the CIS unit 1 A 1 Move the CIS unit 1 1 2 Remove 2 spacers 1 and flat cable 2 1 guide A 1 2 ...

Page 161: ...xposure Feeder System Removing the Copyboard Cover D530 Procedure 3 Remove the CIS unit 1 2 shafts 2 1 2 Caution If the CIS unit comes off be sure to align the tooth 1 on the belt with the tooth 2 on the bottom of the CIS unit to install the unit 2 1 F 4 204 Removing the Copyboard Cover D530 Procedure 1 Remove the copyboard cover 1 1 F 4 205 ...

Page 162: ...left cover Procedure 1 Remove the 1 grounding wires 1 1 screw black TP 2 Disconnect the connectors 3 and free the grounding wire and the harnesses from the harness guide A 1 A 2 3 3 Remove the ferrite core 1 and disconnect the 2 flat cables from the harness guide A 1 A 2 x2 F 4 206 F 4 207 4 Remove the copyboard cover and reader unit 2 claws 2 Caution When placing the removed copyboard cover and r...

Page 163: ... D530 Procedure Caution When mounting the reader unit and copyboard cover fix the 2 hinge arm claws 1 to the 2 latches 2 of the reader unit 2 1 2 1 Removing the Copyboard Glass D530 Preparation 1 Remove the copyboard cover 2 Remove the control panel unit Procedure 1 Remove the 2 screws 1 x2 1 2 Remove the reader upper cover 1 6 claw 2 x6 1 2 2 2 3 Remove the copyboard glass 1 F 4 209 F 4 210 ...

Page 164: ... copyboard glass take care not to touch the glass surface If the surface becomes dirty clean it with lens cleaning paper 1 F 4 211 Removing the Flatbed Motor Unit D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover 3 Remove the control panel 4 Remove the copyboard glass Procedure Caution When assembling disassembling the copyboard glass take care not to lose the 2 CIS unit spacer...

Page 165: ...r Unit D530 Procedure 1 2 Move the gear 1 and remove the belt 2 from the gear 3 Caution Grease is applied on the shaft 1 of the contact sensor so be careful not to let the belt 2 come in contact with the shaft 1 2 F 4 212 2 3 1 3 Remove the guide cover 1 1 4 Free the harness 1 and the grounding wire 2 from the hole A of the reader unit and the harness guide B 1 2 A B F 4 213 F 4 214 F 4 215 ...

Page 166: ...5 Remove the flatbed motor unit 1 2 screws 2 x2 1 2 F 4 216 Removing the CIS Unit D530 Preparation 1 Remove the copyboard cover 2 Remove the control panel unit 3 Remove the copyboard glass Procedure Caution When assembling disassembling the CIS unit take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the CIS unit do not touch the copy reading area A of the CIS unit 1 A ...

Page 167: ...ure Feeder System Removing the CIS Unit D530 Procedure 1 Move the CIS unit 1 1 2 Remove 2 spacers 1 and flat cable 2 1 guide A 1 2 A F 4 217 F 4 218 3 Remove the CIS unit 1 2 shafts 2 1 2 Caution If the CIS unit comes off be sure to align the tooth 1 on the belt with the tooth 2 on the bottom of the CIS unit to install the unit 2 1 F 4 219 ...

Page 168: ...730 Preparation 1 Remove the left cover Procedure 1 Remove the 2 grounding wires 1 1 screw black TP 2 Disconnect the 3 connectors 3 and free the grounding wire and the harnesses from the harness guide A x3 1 A 2 3 3 Remove the ferrite core 1 and disconnect the 2 flat cables from the harness guide A 1 A 2 x2 F 4 220 F 4 221 4 Remove the DADF unit and reader unit 2 claws 2 Caution When placing the r...

Page 169: ...MF4750 MF4730 Procedure Caution When installing the DADF unit and reader unit secure the 2 hinge arm claws 1 to the 2 hooks 2 of the reader unit 2 1 2 1 Removing the SADF Unit MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit Procedure 1 Remove the connector 1 1 hook 2 2 claws 3 Note The location of hook 2 and the 2 claws 3 of the connector co...

Page 170: ... Unit MF4780w MF4770n MF4750 MF4730 Procedure Caution Be sure to hold the connector cover when removing it x2 2 3 1 Caution Before installing the connector cover be sure to store the harness grounding wire and flat cable in the A part A 2 Free the reader harness 1 from the cut off A A 1 1 3 Release the lock 1 on the lower left front side of the reader unit and open the SADF unit 2 1 F 4 223 F 4 22...

Page 171: ...ution Be sure to avoid damaging the bottom sheet when placing the removed SADF unit 1 2 Caution When installing the DADF unit be careful not to damage the harnesses with A part F 4 226 F 4 225 Removing the SADF Pickup Unit MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit Procedure 1 Open the SADF pickup tray 1 and remov...

Page 172: ...1 2 claws 2 2 bosses 3 Caution When releasing the 2 claws 2 on the SADF front cover be careful not to put too much force otherwise they may get damaged x2 3 2 1 Note The following shows the 2 claws 2 and 2 bosses 3 of the SADF front cover 3 3 2 F 4 229 4 Free the boss 1 and open the SADF upper cover 2 by the amount for which the boss is freed 2 1 5 Free the harness 1 from the guide A and remove th...

Page 173: ... Caution When install the SADF upper cover be sure that the guide 1 does not get inside the A part 1 A F 4 232 Removing the SADF Motor Unit MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit Procedure 1 Open the SADF pickup tray 1 and remove the SADF pickup tray 2 shafts 2 1 2 2 2 Open the SADF upper cover 1 and remove th...

Page 174: ...0n MF4750 MF4730 Procedure 3 Remove the tube 1 protecting the harness 2 harnesses bands 2 1 2 4 Remove the SADF motor 1 2 screws 2 x2 2 1 F 4 235 F 4 236 Removing the SADF Pickup Roller 1 2 MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the SADF pickup unit Procedure 1 Remove the rib 1 1 screw 2 Caution Do no...

Page 175: ...osure Feeder System Removing the SADF Pickup Roller 1 2 MF4780w MF4770n MF4750 MF4730 Procedure 2 Remove the SADF upper cover 1 2 shafts 2 1 2 3 Remove the gear 1 bushing 2 2 e rings 3 and bushing 4 Caution Do not touch the pickup roller surface 1 1 F 4 238 4 Remove the pickup roller unit 1 1 1 5 Remove the spring 1 on the back side of the pickup roller unit 1 F 4 239 F 4 240 ...

Page 176: ...r 1 2 MF4780w MF4770n MF4750 MF4730 Procedure 6 Remove the bushing 1 pin 2 and 2 e rings 3 3 1 2 7 Pull out the pickup roller shaft 1 and remove the pickup roller 2 bushing 3 bushing 4 and gear 5 2 A B 3 1 F 4 241 F 4 242 8 Remove the pickup roller unit 2 1 1 pickup roller shaft2 2 1 pickup roller 2 3 1 bushing 4 1 bushing 5 1 3 A B 4 2 Caution When disassembly assembly be careful not to lose the ...

Page 177: ...ion Pad MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the SADF pickup unit Procedure 1 Remove the SADF pickup upper cover 1 and free the harness from the connector 2 and the harness guide A 4 screws 3 1 2 A x4 3 F 4 244 2 Remove the separation pad unit 1 2 claws 2 2 protrusions 3 Caution Be sure to hold the ...

Page 178: ...emove the separation pad 1 2 hooks 2 Caution Do not touch the pad surface 1 When disassembling assembling take care not to lose the spring 2 on the back side of the separation pad 1 2 2 2 1 F 4 246 Caution When the spring 1 comes off go through the following steps to install it 1 Install the spring 1 to the boss 2 on the back side of the separation pad 1 2 2 Install the shaft 1 of the separation p...

Page 179: ...re Feeder System Removing the SADF Separation Pad MF4780w MF4770n MF4750 MF4730 Procedure 3 Install the spring to the protrusion 1 of the SADF pickup upper cover 1 4 Turn the SADF pickup upper cover over to the back and install the separation pad cover 1 2 hooks 2 2 claws 3 x2 1 2 2 3 3 5 Turn the SADF pickup upper cover over to the front and push in the separation pad unit 1 1 ...

Page 180: ...tion 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit Procedure 1 Remove the 4 screws TP 1 x4 1 1 2 Remove the copyboard guide holder 1 1 claw 2 1 protrusions 3 1 3 2 F 4 247 F 4 248 3 Remove the reader upper cover 1 6 claws 2 1 hook 3 x6 1 2 3 2 Caution Place the detached copyboard glass cover on a cloth etc to avoid damaging the bottom sheet When removing the...

Page 181: ...MF4750 MF4730 Procedure 1 F 4 250 Removing the Flatbed Motor Unit MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the copyboard glass take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the copyboard glass do not touch...

Page 182: ...780w MF4770n MF4750 MF4730 Procedure 1 Move the CIS unit 1 1 2 Move the gear 1 and remove the belt 2 from the gear 3 Caution Grease is applied on the shaft 1 of the contact sensor so be careful not to let the belt 2 come in contact with the shaft 1 2 F 4 251 2 3 1 3 Remove the guide cover 1 1 4 Free the harness 1 and the grounding wire 2 from the hole A of the reader unit and the harness guide B 1...

Page 183: ...ure 5 Remove the flatbed motor unit 1 2 screws 2 x2 1 2 F 4 255 Removing the SADF CIS Unit MF4780w MF4770n MF4750 MF4730 Procedure 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the SADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the CIS unit take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the CIS unit do ...

Page 184: ...sure Feeder System Removing the SADF CIS Unit MF4780w MF4770n MF4750 MF4730 Procedure 1 Move the CIS unit 1 1 2 Remove 2 spacers 1 and flat cable 2 1 guide A 1 2 A F 4 256 F 4 257 3 Remove the CIS unit 1 2 shafts 2 1 2 Caution If the CIS unit comes off be sure to align the tooth 1 on the belt with the tooth 2 on the bottom of the CIS unit to install the unit 2 1 F 4 258 ...

Page 185: ...oving the Copyboard Cover MF4720w MF4712 MF4710 Procedure 1 Remove the copyboard cover 1 1 F 4 259 Removing the Copyboard Cover and Reader Unit MF4720w MF4712 MF4710 Preparation 1 Remove the left cover Procedure 1 Remove the 1 grounding wires 1 1 screw black TP 2 Disconnect the connectors 3 and free the grounding wire and the harnesses from the harness guide A 1 A 2 3 3 Remove the ferrite core 1 a...

Page 186: ...board Cover and Reader Unit MF4720w MF4712 MF4710 Procedure 4 Remove the copyboard cover and reader unit 2 claws 2 Caution When placing the removed copyboard cover and reader unit on the desk floor etc be careful not to get the flat cable and harnesses trapped under them x2 1 2 F 4 262 Caution When mounting the reader unit and copyboard cover fix the 2 hinge arm claws 1 to the 2 latches 2 of the r...

Page 187: ...720w MF4712 MF4710 Preparation 1 Remove the copyboard cover 2 Remove the control panel unit Procedure 1 Remove the 2 screws 1 x2 1 2 Remove the reader upper cover 1 6 claw 2 x6 1 2 2 2 F 4 263 F 4 264 3 Remove the copyboard glass 1 Caution Place the detached copyboard glass cover on a cloth etc to avoid damaging the bottom sheet When removing the copyboard glass take care not to touch the glass su...

Page 188: ... the copyboard cover 3 Remove the copyboard cover 4 Remove the control panel 5 Remove the copyboard glass Procedure Caution When assembling disassembling the copyboard glass take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the copyboard glass do not touch the copy reading area A of the CIS unit 1 A 1 Move the CIS unit 1 1 2 Move the gear 1 and remove the belt 2 from the...

Page 189: ...mbly Assembly Document Exposure Feeder System Removing the Flatbed Motor Unit MF4720w MF4712 MF4710 Procedure 2 3 1 3 Remove the guide cover 1 1 4 Free the harness 1 and the grounding wire 2 from the hole A of the reader unit and the harness guide B 1 2 A B F 4 267 F 4 268 F 4 269 5 Remove the flatbed motor unit 1 2 screws 2 x2 1 2 F 4 270 ...

Page 190: ...CIS Unit MF4720 MF4712 MF4710 Preparation 1 Remove the copyboard cover 2 Remove the control panel unit 3 Remove the copyboard glass Procedure Caution When assembling disassembling the CIS unit take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the CIS unit do not touch the copy reading area A of the CIS unit 1 A Procedure 1 Move the CIS unit 1 1 2 Remove 2 spacers 1 and f...

Page 191: ... the CIS unit comes off be sure to align the tooth 1 on the belt with the tooth 2 on the bottom of the CIS unit to install the unit 2 1 F 4 273 Removing the DADF Unit and Reader Unit L418S L410 L190 Preparation 1 Remove the left cover Procedure 1 Remove the grounding wire 1 1 screw black TP 2 2 Disconnect the 4 connectors 3 and free the grounding wire and the harnesses from the harness guide A 1 2...

Page 192: ...t and Reader Unit L418S L410 L190 Procedure x2 1 2 A 4 Remove the DADF unit and reader unit 2 claws 2 Caution When placing the removed copyboard cover and reader unit on the desk floor etc be careful not to get the flat cable and harnesses trapped under them x2 1 2 F 4 275 F 4 276 Caution When installing the DADF unit and reader unit secure the 2 hinge arm claws 1 to the 2 hooks 2 of the reader un...

Page 193: ... Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit Procedure 1 Remove the connector cover 1 and plate 2 and remove the harness from the guide A 4 claws 3 Caution When placing the removed copyboard cover and reader unit on the desk floor etc be careful not to get the flat cable and harnesses trapped under them 1 3 3 Caution Be sure to hold the connector...

Page 194: ...Procedure Caution Before installing the connector cover be sure to store the harness grounding wire and flat cable in the A part A 2 Release the lock 1 on the lower left front side of the reader unit and open the DADF unit 1 2 F 4 277 3 Remove the DADF unit 1 by lift it up and then raising it vertically 1 Caution When installing the DADF unit be careful not to damage the harnesses with A part F 4 ...

Page 195: ...edure Removing the DADF Pickup Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit Procedure 1 Open the DADF pickup tray and DADF upper cover 2 1 2 Remove the DADF upper front cover 2 by pushing the claw F 4 280 2 3 1 2 Caution When assembling the DADF upper front cover align the 2 hooks 1 at left side to DADF front cover hole A to...

Page 196: ...e 3 Open the DADF tray 1 until it stops Then release the claw by pushing the hook 2 in the direction of the arrow A with a flat blade screwdriver and move the tray in the direction of the arrow 1 2 3 4 Open the DADF tray 1 to the position shown in the figure below and remove it upward 1 F 4 282 F 4 283 5 Remove the DADF upper rear cover 1 1 boss 2 3 hooks 3 1 2 3 3 6 Remove the DADF upper cover 1 ...

Page 197: ...90 Procedure 7 Remove the DADF unit communication cable 1 from the harness guide A x5 1 A 8 Remove the DADF unit 5 screws 2 x5 1 2 2 2 F 4 286 F 4 287 Removing the DADF Motor Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit Procedure 1 Open the DADF pickup tray and DADF upper cover 1 2 2 Remove the DADF upper rear cover 1 1 boss...

Page 198: ...DADF motor 1 1 connector 2 1 screw 3 1 2 3 F 4 289 F 4 290 Removing the DADF Solenoid Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the DADF pickup unit 5 Remove the DADF motor unit Procedure Caution Gently remove the DADF solenoid unit to prevent the gear phase from becoming displaced 1 Remove the DADF solenoid unit...

Page 199: ...put the solenoid shaft 1 through the hole A on the solenoid arm When assembling the DADF solenoid unit ensure that the 2 DADF pickup unit shafts 2 and the 2 DADF solenoid unit contact points B are in contact 1 A B 2 Removing the DADF Pickup Roller Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the pickup unit Procedur...

Page 200: ... Feeder System Removing the DADF Pickup Roller Unit L418S L410 L190 Procedure 1 2 3 4 3 2 Remove the DADF pickup roller unit 1 1 3 Remove the spring 1 on the back side of the pickup roller unit 1 F 4 292 F 4 293 F 4 294 4 Remove the bushing 1 pin 2 and 2 e rings 3 Caution When disassembling assembling take care not to lose the plate spring 1 and gear 2 2 1 3 1 2 F 4 295 ...

Page 201: ... Roller Unit L418S L410 L190 Procedure 5 Pull out pickup roller shaft 1 and remove the pickup roller 2 bushing A bushing B and gear 3 2 A B 3 1 Note When pulling out the pickup roller shaft 1 be sure to align the boss 2 of the roller shaft with the hole on the A part 2 1 A A F 4 296 6 Remove the pickup roller unit 1 pickup roller shaft 2 pickup roller 2 3 1 bushing A 1 bushing B 1 gear 4 1 3 A B 4...

Page 202: ...ad L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the pickup unit Procedure 1 Remove the DADF pickup upper cover 1 and free the harness from the connector 2 and the harness guide A 4 screws 3 1 2 A x4 3 F 4 298 2 Remove the separation pad unit 1 2 claws 2 2 protrusions 3 Caution Be sure to hold the separation pad unit with...

Page 203: ...ration pad 1 2 hooks 2 Caution Do not touch the pad surface 1 When disassembling assembling take care not to lose the spring 2 on the back side of the separation pad 1 2 2 2 1 F 4 300 Caution When the spring 1 comes off go through the following steps to install it 1 Install the spring 1 to the boss 2 on the back side of the separation pad 1 2 2 Install the shaft 1 of the separation pad unit to the...

Page 204: ...ckup upper cover 1 4 Turn the DADF pickup upper cover over to the back and install the separation pad cover 1 x2 1 2 2 3 3 5 Turn the DADF pickup upper cover over to the front and push in the separation pad unit 1 1 Removing the Copyboard Glass L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit Procedure 1 Remove the 4 screws TP 1 x4 1...

Page 205: ... Removing the Copyboard Glass L418S L410 L190 Procedure 3 Remove the reader upper cover 1 6 claws 2 1 hook 3 x6 1 2 2 2 2 3 Caution Place the detached copyboard glass cover on a cloth etc to avoid damaging the bottom sheet When removing the copyboard glass take care not to touch the glass surface If the surface becomes dirty clean it with lens cleaning paper F 4 303 1 F 4 304 ...

Page 206: ...ove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the copyboard glass take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the copyboard glass do not touch the copy reading area A of the CIS unit 1 A 1 Move the CIS unit 1 1 2 Move the gear 1 and remove the belt 2 from the gear 3 Caution Grea...

Page 207: ...mbly Assembly Document Exposure Feeder System Removing the Flatbed Motor Unit L418S L410 L190 Procedure 2 3 1 3 Remove the guide cover 1 1 4 Free the harness 1 and the grounding wire 2 from the hole A of the reader unit and the harness guide B 1 2 A B F 4 306 F 4 307 F 4 308 5 Remove the flatbed motor unit 1 2 screws 2 x2 1 2 F 4 309 ...

Page 208: ... Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit 4 Remove the copyboard glass Procedure Caution When assembling disassembling the CIS unit take care not to lose the 2 CIS unit spacers 1 When assembling disassembling the CIS unit do not touch the copy reading area A of the CIS unit 1 A 1 Move the CIS unit 1 1 2 Remove 2 spacers ...

Page 209: ...90 Procedure Disassembly Assembly Document Exposure Feeder System Removing the DADF CIS Unit L418S L410 L190 Procedure 3 Remove the CIS unit 1 2 shafts 2 1 2 Caution If the CIS unit comes off be sure to align the tooth 1 on the belt with the tooth 2 on the bottom of the CIS unit to install the unit 2 1 F 4 312 ...

Page 210: ...Panel Unit MF4890dw MF4880dw Procedure Controller System Removing the Control Panel Unit MF4890dw MF4880dw Procedure 1 Open the reader unit 1 and remove the control panel support plate 2 2 protrusions 3 1 2 3 2 Remove the 8 screws 1 on the back side of the control panel unit x8 1 1 F 4 313 F 4 314 3 Remove the control panel unit 1 4 claws 2 1 flat cable 3 x4 3 1 2 2 F 4 315 ...

Page 211: ...ose the reader unit 1 and place the host machine with its left side down Caution Be sure to hold the reader unit firmly when turning the machine with its left side down because the reader unit will be forced open by hinge spring pressure 2 Remove the tension unit 1 1 screw 2 F 4 316 1 2 3 Remove the shaft support 1 and remove the drive cover 2 5 screws 3 Caution Be sure to raise the drive cover 2 ...

Page 212: ...ly Controller System Removing the Drive Belt MF4890dw MF4880dw Procedure 4 Remove the fixing transmission gear 1 and the cartridge transmission gear 2 1 2 5 Remove the drive belt 1 F 4 318 F 4 319 Caution When assembling the drive gear install the cartridge arm 1 according to the position shown in the left picture 1 1 F 4 320 ...

Page 213: ...he order shown in the below picture 1 2 3 4 5 6 7 8 9 1 Primary deceleration pulley 6 Gear coupling 2 Timing belt 7 Feed deceleration gear 3 Fixing ratchet gear 8 Compression spring 4 Fixing transmission gear 9 Compression spring 5 Cartridge transmission gear 6 Gear coupling 7 Feed deceleration gear 8 Compression spring 9 Compression spring F 4 321 Caution Align the drive cover 2 with the 14 shaft...

Page 214: ...w Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 323 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 324 Caution Ensure that the shutter open clos...

Page 215: ... Disconnect the connectors 1 and remove the motor driver PCB 2 2 claws 3 1 hook 4 4 2 x2 3 x2 1 3 Free the harness from the harness guide A and B and remove the duplex relay PCB 1 1 claw 2 1 hook 3 A 2 1 B 3 F 4 326 F 4 327 4 Free the motor harness 1 from the harness guide C 5 Remove the motor guide 2 1 screw 3 1 hook 4 3 1 2 4 C 6 Lower the tension unit 1 and remove the belt 2 1 2 F 4 328 F 4 329...

Page 216: ... 2 screws with washer 2 x2 2 1 Caution When installing the main motor be sure to install the harness 1 to the upper side of the motor 1 F 4 331 F 4 330 Removing the Main Fan MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black...

Page 217: ...scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 333 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 334 2 Free the fan harness 1 from the harness guide A and put it through the hole B of the right side plate to the outside 1 connector 2 2 1 A B 3 Free the harness from the guide A and remove the main fan 1 2 claws 2 A 1 ...

Page 218: ... of the fan with the fan label 1 facing inwards 1 2 F 4 337 Removing the Engine Controller PCB MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Re...

Page 219: ...al 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 340 F 4 339 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and free the harness from the guide A 2 flat cables 2 7 1...

Page 220: ...CB MF4890dw MF4880dw Procedure 5 Remove the engine controller PCB 1 2 screws with washers 2 1 screw with tooth lock washer 3 1 screw black TP 4 1 hook 5 1 5 2 3 4 x4 F 4 343 Caution When reassembling attach the engine controller PCB to the hook 1 and then mount the switchboard 3 to the lower side of the switch arm 2 3 1 2 3 2 2 3 Ensure that the switch arm 1 can move vertically 1 F 4 344 ...

Page 221: ...ller PCB MF4890dw MF4880dw Preparation 1 Remove the left cover Procedure 1 Remove the 3 flat cables 1 and 3 connectors 2 x6 1 2 2 Remove the main controller PCB 1 1 screw bind 2 4 screws black TP 3 x5 1 2 3 3 3 F 4 345 F 4 346 Removing the FAX NCU PCB MF4890dw MF4880dw Preparation 1 Remove the left cover Procedure 1 Remove the FAX NCU PCB 1 1 flat cable 2 2 connectors 3 1 protrusion 4 3 screws 5 1...

Page 222: ...dure 1 Remove the wireless LAN PCB 1 flat cable 2 1 screw 3 1 2 3 F 4 348 Removing the Paper Leading Edge Sensor PCB MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless ...

Page 223: ...80dw Procedure 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 351 F 4 350 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 x4 1 2 F 4 352 F 4 353 Remove the harness retaining sprin...

Page 224: ...w Procedure Disassembly Assembly Controller System Removing the Paper Leading Edge Sensor PCB MF4890dw MF4880dw Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the paper leading edge sensor PCB 1 2 claws 2 x2 1 2 2 F 4 354 F 4 355 Note The below picture shows how to wind the harness F 4 356 ...

Page 225: ...the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 F 4 357 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put ...

Page 226: ...g Delivery Paper Width Sensor PCB MF4890dw MF4880dw Procedure 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A x4 1 2 F 4 360 F 4 361 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the fixing delivery paper width sensor PCB 1 1 connector 2 claws 3 x2 2 3 3 1 F 4 362 F 4 363 4 Remove the harness retaining spring 1 and 4 connectors 2 ...

Page 227: ...r Unit MF4890dw MF4880dw Procedure Note The below picture shows how to wind the harness F 4 364 Removing the Toner Sensor and Multi Pickup Sensor Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the wireless LAN PCB Procedure 1 Remove the scanner cover 1 2 screw...

Page 228: ...ti Pickup Sensor Unit MF4890dw MF4880dw Procedure Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 366 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 367 2 Disconnect the 2 connectors 1 and put it through the hole A of the left side plate to the inside A A 1 1 x2 3 Remove the drum unit 1 1 F 4 ...

Page 229: ... Remove the toner sensor multi pickup sensor unit 1 wire saddle 2 1 claw 3 2 hooks 4 1 1 2 4 3 F 4 370 Removing the Speaker MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the right cover 3 Remove the front cover unit Procedure 1 Disconnect the speaker harness 1 and put it through the hole A of the left side plate to the inside 1 connector 2 1 wire saddle 3 1 2 3 A 1 A F 4 371 ...

Page 230: ...dw MF4880dw Procedure 2 Free the speaker harness 1 from the harness guide A and put it thriugh the hole B of the right side plate to the outside 1 1 A B 3 Remove the speaker 1 1 screw 2 1 2 F 4 372 F 4 373 Caution When mounting the speaker attach the harness 1 to the upper side of the speaker So that the speaker harness connector can reach the main controller 1 F 4 374 ...

Page 231: ...e Control Panel Unit MF4870dn MF4830d Procedure Removing the Control Panel Unit MF4870dn MF4830d Procedure 1 Open the reader unit 1 and remove the control panel support plate 2 2 protrusions 3 1 2 3 2 Remove the 8 screws 1 on the back side of the control panel unit x8 1 1 F 4 375 F 4 376 3 Remove the control panel unit 1 4 claws 2 1 flat cable 3 x4 3 1 2 2 F 4 377 ...

Page 232: ... 1 Close the reader unit 1 and place the host machine with its left side down Caution Be sure to hold the reader unit firmly when turning the machine with its left side down because the reader unit will be forced open by hinge spring pressure 2 Remove the tension unit 1 1 screw 2 F 4 378 1 2 3 Remove the shaft support 1 and remove the drive cover 2 5 screws 3 Caution Be sure to raise the drive cov...

Page 233: ...er System Removing the Drive Belt MF4870dn MF4830d Procedure 1 2 x5 3 3 3 4 Remove the fixing transmission gear 1 and the cartridge transmission gear 2 1 2 5 Remove the drive belt F 4 380 F 4 381 1 Caution When assembling the drive gear install the cartridge arm 1 according to the position shown in the left picture 1 1 F 4 383 F 4 382 ...

Page 234: ...e order shown in the below picture 1 2 3 4 5 6 7 8 9 1 Primary deceleration pulley 6 Gear coupling 2 Timing belt 7 Feed deceleration gear 3 Fixing ratchet gear 8 Compression spring 4 Fixing transmission gear 9 Compression spring 5 Cartridge transmission gear 6 Gear coupling 7 Feed deceleration gear 8 Compression spring 9 Compression spring F 4 384 Caution Align the drive cover 2 with the 14 shaft ...

Page 235: ... Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 386 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 387 Caution Ensure that the shutter open close...

Page 236: ...Disconnect the connectors 1 and remove the motor driver PCB 2 2 claws 3 1 hook 4 4 2 x2 3 x2 1 3 Free the harness from the harness guide A and B and remove the duplex relay PCB 1 1 claw 2 1 hook 3 A 2 1 B 3 F 4 389 F 4 390 4 Free the motor harness 1 from the harness guide C 5 Remove the motor guide 2 1 screw 3 1 hook 4 3 1 2 4 C 6 Lower the tension unit 1 and remove the belt 2 1 2 F 4 391 F 4 392 ...

Page 237: ... 2 screws with washer 2 x2 2 1 Caution When installing the main motor be sure to install the harness 1 to the upper side of the motor 1 F 4 394 F 4 393 Removing the Main Fan MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black ...

Page 238: ...canner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 396 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 397 2 Free the fan harness 1 from the harness guide A and put it through the hole B of the right side plate to the outside 1 connector 2 2 1 A B 3 Free the harness from the guide A and remove the main fan 1 2 claws 2 A 1 2...

Page 239: ...ards 1 2 F 4 400 Removing the Engine Controller PCB MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4870dn Procedure MF4870dn 1 Remove the main controller mounting plate 1 4 screws with ...

Page 240: ...ler PCB MF4870dn MF4830d Procedure x2 1 2 3 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B F 4 402 F 4 403 Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 404 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F 4 405 ...

Page 241: ...g 1 and free the harness from the guide A 2 flat cables 2 6 connectors 3 x8 1 3 2 3 A 5 Remove the engine controller PCB 1 5 screws with washers 2 1 screw with tooth lock washer 3 1 screw black TP 4 1 hook 5 x7 1 3 4 5 2 2 F 4 406 F 4 407 Caution When reassembling attach the engine controller PCB to the hook 1 and then mount the switchboard 3 to the lower side of the switch arm 2 3 1 2 3 2 2 3 Ens...

Page 242: ... PCB MF4870dn MF4830d Preparation 1 Remove the left cover Procedure 1 Remove the 3 flat cables 1 and 3 connectors 2 x6 1 2 2 Remove the main controller PCB 1 1 screw bind 2 4 screws black TP 3 x5 1 2 3 3 3 F 4 409 F 4 410 Removing the FAX NCU PCB MF4870dn Preparation 1 Remove the left cover Procedure 1 Remove the FAX NCU PCB 1 1 flat cable 2 2 connectors 3 1 protrusion 4 3 screws 5 1 2 3 4 5 5 5 x...

Page 243: ...nd reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4870dn Procedure MF4870dn 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 MF4830d 1 Remove the main controller mounting plate 1 1 screw with washers 2 1 screw blac...

Page 244: ...ng Edge Sensor PCB MF4870dn MF4830d Procedure Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 415 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 F 4 416 x4 1 2 5 Remove the harness 1 from the guide A and B 1 A 1 B F 4 417 F 4 418 ...

Page 245: ... 2 Note The below picture shows how to wind the harness F 4 420 F 4 419 Removing the Fixing Delivery Paper Width Sensor PCB MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4870dn Procedu...

Page 246: ...e MF4870dn 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B F 4 422 F 4 423 Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 424 3 Remove the harness spring 1 from the hook 2 and...

Page 247: ... Removing the Fixing Delivery Paper Width Sensor PCB MF4870dn MF4830d Procedure 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 5 Remove the harness 1 from the guide A and B 1 A 1 B F 4 426 F 4 427 6 Remove the fixing delivery paper width sensor PCB 1 1 connector 2 claws 3 x2 2 3 3 1 Note The below picture shows how to wind the harness it F 4 429 F 4 428 ...

Page 248: ... Multi Pickup Sensor Unit MF4870dn Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 x2 1 2 F 4 430 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 431 Caution ...

Page 249: ...y Controller System Removing the Toner Sensor and Multi Pickup Sensor Unit MF4870dn Procedure 2 Disconnect the 2 connectors 1 and put it through the hole A of the left side plate to the inside A A 1 1 x2 3 Remove the drum unit 1 1 F 4 433 F 4 434 4 Remove the toner sensor multi pickup sensor unit 1 wire saddle 2 1 claw 3 2 hooks 4 1 1 2 4 3 F 4 435 ...

Page 250: ...emove the left cover 2 Remove the right cover 3 Remove the front cover unit Procedure 1 Disconnect the speaker harness 1 and put it through the hole A of the left side plate to the inside 1 connector 2 1 wire saddle 3 1 2 3 A 1 A F 4 436 2 Free the speaker harness 1 from the harness guide A and put it through the hole B of the right side plate to the outside 1 1 A B 3 Remove the speaker 1 1 screw ...

Page 251: ...ting the speaker attach the harness 1 to the upper side of the speaker So that the speaker harness connector can reach the main controller 1 F 4 439 Removing the Control Panel Unit MF4820d Procedure 1 Open the reader unit and remove the control panel support plate 2 Remove the 8 screws 1 on the back side of the control panel unit x8 1 1 3 Remove the control panel unit 1 4 claws 2 1 flat cable 3 F ...

Page 252: ...he reader unit 1 and place the host machine with its left side down Caution Be sure to hold the reader unit firmly when turning the machine with its left side down because the reader unit will be forced open by hinge spring pressure F 4 442 2 Remove the tension unit 1 1 screw 2 1 2 3 Remove the shaft support 1 and remove the drive cover 2 5 screws 3 Caution Be sure to raise the drive cover 2 strai...

Page 253: ...er System Removing the Drive Belt MF4820d Procedure 1 2 x5 3 3 3 4 Remove the fixing transmission gear 1 and the cartridge transmission gear 2 1 2 F 4 443 F 4 444 5 Remove the drive belt 1 Caution When assembling the drive gear install the cartridge arm 1 according to the position shown in the left picture 1 1 F 4 446 F 4 445 ...

Page 254: ...hown in the below picture 1 2 3 4 5 6 7 8 9 1 Primary deceleration pulley 6 Gear coupling 2 Timing belt 7 Feed deceleration gear 3 Fixing ratchet gear 8 Compression spring 4 Fixing transmission gear 9 Compression spring 5 Cartridge transmission gear 6 Gear coupling 7 Feed deceleration gear 8 Compression spring 9 Compression spring F 4 447 Caution Align the drive cover 2 with the 14 shaft holes 1 t...

Page 255: ...move the left cover 2 Remove the copyboadr cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 449 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 450 Caution Ensure that the shutter open close lever 1 ca...

Page 256: ...t the connectors 1 and remove the motor driver PCB 2 2 claws 3 1 hook 4 4 2 x2 3 x2 1 3 Free the harness from the harness guide A and B and remove the duplex relay PCB 1 1 claw 2 1 hook 3 A 2 1 B 3 F 4 452 F 4 453 4 Free the motor harness 1 from the harness guide C 5 Remove the motor guide 2 1 screw 3 1 hook 4 3 1 2 4 C 6 Lower the tension unit 1 and remove the belt 2 1 2 F 4 454 F 4 455 ...

Page 257: ...g the main motor be sure to install the harness 1 to the upper side of the motor 1 F 4 457 F 4 456 Removing the Engine Controller PCB MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main contro...

Page 258: ...the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 460 F 4 459 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and free the harness from the guide A 2 flat cables 2 7 1 2 3 3 3 A...

Page 259: ...CB MF4820d Procedure 5 Remove the engine controller PCB 1 2 screws with washers 2 1 screw with tooth lock washer 3 1 screw black TP 4 1 hook 5 1 5 2 3 4 x4 F 4 463 Caution When reassembling attach the engine controller PCB to the hook 1 and then mount the switchboard 3 to the lower side of the switch arm 2 3 1 2 3 2 2 3 Ensure that the switch arm 1 can move vertically 1 F 4 464 ...

Page 260: ... cables 1 and 3 connectors 2 x6 1 2 2 Remove the main controller PCB 1 1 screw bind 2 4 screws black TP 3 x5 1 2 3 3 3 F 4 465 F 4 466 Removing the Paper Leading Edge Sensor PCB MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main contr...

Page 261: ...dure 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 469 F 4 468 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 x4 1 2 F 4 470 F 4 471 Remove the harness retaining spring 1 and 4 ...

Page 262: ...d Procedure Disassembly Assembly Controller System Removing the Paper Leading Edge Sensor PCB MF4820d Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the paper leading edge sensor PCB 1 2 claws 2 x2 1 2 2 F 4 472 F 4 473 Note The below picture shows how to wind the harness F 4 474 ...

Page 263: ... Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 F 4 475 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the...

Page 264: ...g Delivery Paper Width Sensor PCB MF4820d Procedure 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 x4 1 2 F 4 478 F 4 479 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the fixing delivery paper width sensor PCB 1 1 connector 2 claws 3 x2 2 3 3 1 F 4 480 F 4 481 Remove the harness retaining spring 1 and 4 connectors 2 ...

Page 265: ...ulti Pickup Sensor Unit MF4820d Procedure Note The below picture shows how to wind the harness F 4 482 Removing the Toner Sensor and Multi Pickup Sensor Unit MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 x2 1 2 F 4 483...

Page 266: ...ti Pickup Sensor Unit MF4820d Procedure Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 484 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 485 2 Disconnect the 2 connectors 1 and put it through the hole A of the left side plate to the inside A A 1 1 x2 3 Remove the drum unit 1 1 F 4 486 F 4 48...

Page 267: ...y Controller System Removing the Control Panel Unit D530 Procedure 4 Remove the toner sensor multi pickup sensor unit 1 wire saddle 2 1 claw 3 2 hooks 4 1 1 2 4 3 F 4 488 Removing the Control Panel Unit D530 Procedure 1 Remove the copyboard cover Procedure 1 Press the unlock button 1 and open the reader unit 2 1 2 F 4 489 ...

Page 268: ...ntrol panel unit 1 1 flat cable 2 1 2 F 4 490 F 4 491 Removing the Drive Belt D530 Preparation 1 Remove the left cover Procedure 1 Close the reader unit 1 and place the host machine with its left side down Caution Be sure to hold the reader unit firmly when turning the machine with its left side down because the reader unit will be forced open by hinge spring pressure 2 Remove the tension unit 1 1...

Page 269: ...lt D530 Procedure 1 2 3 Remove the shaft support 1 and remove the drive cover 2 5 screws 3 Caution Be sure to raise the drive cover 2 straight above slowly to prevent the gear phase from becoming displaced 1 2 x5 3 3 F 4 493 F 4 494 4 Remove the fixing transmission gear 1 and the cartridge transmission gear 2 1 2 5 Remove the drive belt 1 F 4 495 F 4 496 ...

Page 270: ...ding to the position shown in the left picture 1 1 F 4 497 Caution Assemble the drive gear in the order shown in the below picture 1 2 3 4 5 6 7 8 9 1 Primary deceleration pulley 6 Gear coupling 2 Timing belt 7 Feed deceleration gear 3 Fixing ratchet gear 8 Compression spring 4 Fixing transmission gear 9 Compression spring 5 Cartridge transmission gear 6 Gear coupling 7 Feed deceleration gear 8 Co...

Page 271: ...99 Removing the Main Motor D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to disconnect the fla...

Page 272: ...crews black TP 2 Caution When removing the scanner cover be sure that the cover does not get under A part of the right side plate A 1 A 1 1 x2 2 F 4 501 Caution When install the scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 502 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F...

Page 273: ...hutter open close lever 1 can move vertically 1 F 4 504 3 Disconnect the 2 connectors 1 and remove the motor driver PCB 2 2 claws 3 1 hook 4 4 2 x2 3 x2 1 F 4 505 4 Free the harness from the harness guide A and B and remove the duplex relay PCB 1 1 claw 2 1 hook 3 A 2 1 B 3 5 Free the motor harness 1 from the harness guide C 6 Remove the motor guide 2 1 screw 3 1 hook 4 3 1 2 4 C F 4 506 F 4 507 ...

Page 274: ...embly Assembly Controller System Removing the Main Motor D530 Procedure 7 Lower the tension unit 1 and remove the belt 2 1 2 8 Remove the main motor 1 2 screws with washer 2 x2 2 1 F 4 508 F 4 509 Caution When installing the main motor be sure to install the harness 1 to the upper side of the motor 1 ...

Page 275: ...er 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to disconnect the flat cable in advance to prevent damage to the cable 2 Remove the scanner cover 1 2 screws black TP 2 Caution When removing the scanner co...

Page 276: ...damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 511 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 512 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 513 3 Free the fan harness 1 from the harness guide A and put it through the hole B of the right side plate to the outside 1 c...

Page 277: ...e main fan attach the harness 2 to the upper right side of the fan with the fan label 1 facing inwards 1 2 F 4 516 F 4 515 Removing the Engine Controller PCB D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 R...

Page 278: ...he harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 519 F 4 518 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and free the harness from the guide A 2 flat cables 2 6 connectors 3...

Page 279: ...B D530 Procedure 5 Remove the engine controller PCB 1 5 screws with washers 2 1 screw with tooth lock washer 3 1 screw black TP 4 1 hook 5 x7 1 3 4 5 2 2 F 4 522 Caution When reassembling attach the engine controller PCB to the hook 1 and then mount the switchboard 3 to the lower side of the switch arm 2 3 1 2 3 2 2 3 Ensure that the switch arm 1 can move vertically 1 F 4 523 ...

Page 280: ...ables 1 and connector 2 x4 2 1 2 Remove the main controller PCB 1 1 screw binding 2 4 screws black TP 3 1 2 x5 3 F 4 524 F 4 525 Removing the Paper Leading Edge Sensor PCB D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB...

Page 281: ...isconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 528 F 4 527 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F...

Page 282: ...0 Procedure Disassembly Assembly Controller System Removing the Paper Leading Edge Sensor PCB D530 Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the paper leading edge sensor PCB 1 2 claws 2 x2 1 2 2 F 4 531 F 4 532 Note The below picture shows how to wind the harness F 4 533 ...

Page 283: ...ove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 2 3 1 F 4 534 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hol...

Page 284: ...ivery Paper Width Sensor PCB D530 Procedure 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 537 F 4 538 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the fixing delivery paper width sensor PCB 1 1 connector 2 claws 3 x2 2 3 3 1 F 4 539 F 4 540 ...

Page 285: ... Removing the Multi Pickup Sensor Unit D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to discon...

Page 286: ...er cover 1 2 screws black TP 2 Caution When removing the scanner cover be sure that the cover does not get under A part of the right side plate A 1 A 1 1 x2 2 F 4 542 Caution When install the scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 543 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scann...

Page 287: ...re that the shutter open close lever 1 can move vertically 1 F 4 545 3 Remove the multi pickup sensor unit 1 1 wire saddle 2 1 claw 3 2 hooks 3 3 1 2 4 F 4 546 Removing the Control Panel Unit MF4780w MF4770n MF4750 MF4730 Procedure 1 Open the reader unit 1 and remove the control panel support plate 2 2 protrusions 3 1 2 3 2 Remove the 8 screws 1 on the back side of the control panel unit x8 1 1 F ...

Page 288: ...panel unit 1 4 claws 2 1 flat cable 3 x4 3 1 2 2 F 4 549 Removing the Drive Belt MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the right cover Procedure 1 Close the reader unit 1 and place the host machine with its left side down Caution Be sure to hold the reader unit firmly when turning the machine with its left side down because the reader unit will be forced open by hinge spring pressure ...

Page 289: ...lt MF4780w MF4770n MF4750 MF4730 Procedure 1 2 3 Remove the shaft support 1 and remove the drive cover 2 5 screws 3 Caution Be sure to raise the drive cover 2 straight above slowly to prevent the gear phase from becoming displaced 1 2 x5 3 3 F 4 551 F 4 552 4 Remove the fixing transmission gear 1 and the cartridge transmission gear 2 1 2 5 Remove the drive belt 1 F 4 553 F 4 554 ...

Page 290: ...the cartridge arm 1 according to the position shown in the left picture 1 1 F 4 555 Caution Assemble the drive gear in the order shown in the below picture 1 2 3 4 5 6 7 8 9 1 Primary deceleration pulley 6 Gear coupling 2 Timing belt 7 Feed deceleration gear 3 Fixing ratchet gear 8 Compression spring 4 Fixing transmission gear 9 Compression spring 5 Cartridge transmission gear 6 Gear coupling 7 Fe...

Page 291: ...70n MF4750 MF4730 Procedure Caution Align the drive cover 2 with the 14 shaft holes 1 to mount it 2 1 1 1 F 4 557 Removing the Main Motor MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 558 ...

Page 292: ...on When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 559 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 560 2 Disconnect the connectors 1 and remove the motor driver PCB 2 2 claws 3 1 hook 4 4 2 x2 3 x2 1 3 Free the harness from the harness guide A and B and remove the duplex relay PCB 1 1 claw 2 1 hook...

Page 293: ...0w MF4770n MF4750 MF4730 Procedure 4 Free the motor harness 1 from the harness guide C 5 Remove the motor guide 2 1 screw 3 1 hook 4 3 1 2 4 C 6 Lower the tension unit 1 and remove the belt 2 1 2 F 4 563 F 4 564 7 Remove the main motor 1 2 screws with washer 2 x2 2 1 Caution When installing the main motor be sure to install the harness 1 to the upper side of the motor 1 F 4 566 F 4 565 ...

Page 294: ...the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure MF4730 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 MF4780w MF4770n MF4750 MF4730 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black ...

Page 295: ...ting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 570 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F 4 571 4 Remove the harness retaining spring 1 and free the harness from the guide A 2 flat cables 2 6 connectors 3 x8 1 3 2 3 A 5 Remove the engine controller PCB 1 5 screws with washers 2 1 screw with tooth lock was...

Page 296: ...mbling attach the engine controller PCB to the hook 1 and then mount the switchboard 3 to the lower side of the switch arm 2 3 1 2 3 2 2 3 Ensure that the switch arm 1 can move vertically 1 F 4 574 Removing the Main Controller PCB MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover Procedure 1 Remove the 3 flat cables 1 and 3 connectors 2 x6 1 2 2 Remove the main controller PCB 1 1 s...

Page 297: ...F4780w Procedure Removing the FAX NCU PCB MF4780w MF4770n MF4750 Preparation 1 Remove the left cover Procedure 1 Remove the FAX NCU PCB 1 1 flat cable 2 2 connectors 3 1 protrusion 4 3 screws 5 1 2 3 4 5 5 5 x3 x4 F 4 577 Removing the Wireless LAN PCB MF4780w Preparation 1 Remove the left cover Procedure 1 Remove the wireless LAN PCB 1 flat cable 2 1 screw 3 1 2 3 F 4 578 ...

Page 298: ... 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4780w MF4770n MF4750 9 Remove the wireless LAN PCB MF4780w Procedure MF4730 1 Remove the main controller mounting plate 1 1 screw with washers 2 1 screws black TP 3 x2 1 2 3 MF4780w MF4770n MF4750 1 Remove the main controller mou...

Page 299: ...ng Edge Sensor PCB MF4780w MF4770n MF4750 MF4730 Procedure Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 582 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F 4 583 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 5 Remove the harness 1 from the guide A and B 1 A 1 B F 4 584 F 4 ...

Page 300: ... Fixing Delivery Paper Width Sensor PCB MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4780w MF4770n MF4750 9 Remove the wireless LAN PCB MF4780w Procedure MF4730 1 Remove ...

Page 301: ...dge Sensor PCB MF4780w MF4770n MF4750 MF4730 Procedure x6 1 2 3 2 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B F 4 589 F 4 590 Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 591 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A ...

Page 302: ... Removing the Paper Leading Edge Sensor PCB MF4780w MF4770n MF4750 MF4730 Procedure 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 5 Remove the harness 1 from the guide A and B 1 A 1 B F 4 593 F 4 594 6 Remove the fixing delivery paper width sensor PCB 1 1 connector 2 claws 3 x2 2 3 3 1 Note The below picture shows how to wind the harness it F 4 596 F 4 595 ...

Page 303: ...Multi Pickup Sensor Unit MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 x2 1 2 F 4 597 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover ...

Page 304: ...A of the left side plate to the inside A A 1 1 3 Remove the toner sensor and multi pickup sensor unit 1 1 wire saddle 2 1 claw 3 2 hooks 4 3 1 1 2 4 F 4 600 F 4 601 Removing the Speaker MF4780w MF4770n MF4750 Preparation 1 Remove the left cover 2 Remove the right cover 3 Remove the front cover unit Procedure 1 Disconnect the speaker harness 1 and put it through the hole A of the left side plate to...

Page 305: ...w MF4770n MF4750 Procedure 2 Free the speaker harness 1 from the harness guide A and put it through the hole B of the right side plate to the outside 1 1 A B 3 Remove the speaker 1 1 screw 2 1 2 F 4 603 F 4 604 Caution When mounting the speaker attach the harness 1 to the upper side of the speaker So that the speaker harness connector can reach the main controller 1 F 4 605 ...

Page 306: ...t plate 2 Remove the 8 screws 1 on the back side of the control panel unit x8 1 1 3 Remove the control panel unit 4 claws 1 flat cable F 4 606 F 4 607 Removing the Drive Belt MF4720w MF4712 MF4710 Preparation 1 Remove the left cover Procedure 1 Close the reader unit 1 and place the host machine with its left side down Caution Be sure to hold the reader unit firmly when turning the machine with its...

Page 307: ...t MF4720w MF4712 MF4710 Procedure 1 2 3 Remove the shaft support 1 and remove the drive cover 2 5 screws 3 Caution Be sure to raise the drive cover 2 straight above slowly to prevent the gear phase from becoming displaced 1 2 x5 3 3 3 F 4 609 F 4 610 4 Remove the fixing transmission gear 1 and the cartridge transmission gear 2 1 2 5 Remove the drive belt 1 F 4 611 F 4 612 ...

Page 308: ...ridge arm 1 according to the position shown in the left picture 1 1 F 4 613 Caution Assemble the drive gear in the order shown in the below picture 1 2 3 4 5 6 7 8 9 1 Primary deceleration pulley 6 Gear coupling 2 Timing belt 7 Feed deceleration gear 3 Fixing ratchet gear 8 Compression spring 4 Fixing transmission gear 9 Compression spring 5 Cartridge transmission gear 6 Gear coupling 7 Feed decel...

Page 309: ...712 MF4710 Procedure Caution Align the drive cover 2 with the 14 shaft holes 1 to mount it 2 1 1 1 F 4 615 Removing the Main Motor MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 616 ...

Page 310: ...mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 617 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 618 2 Disconnect the connectors 1 and remove the motor driver PCB 2 2 claws 3 1 hook 4 4 2 x2 3 x2 1 3 Free the harness from the harness guide A and B and remove the duplex relay PCB 1 1 claw 2 1 hook 3 A 2 1...

Page 311: ...0w MF4712 MF4710 Procedure 4 Free the motor harness 1 from the harness guide C 5 Remove the motor guide 2 1 screw 3 1 hook 4 3 1 2 4 C 6 Lower the tension unit 1 and remove the belt 2 1 2 F 4 621 F 4 622 7 Remove the main motor 1 2 screws with washer 2 x2 2 1 Caution When installing the main motor be sure to install the harness 1 to the upper side of the motor 1 F 4 624 F 4 623 ...

Page 312: ...ove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 F 4 625 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hol...

Page 313: ...w MF4712 MF4710 Procedure 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and free the harness from the guide A 2 flat cables 2 7 1 2 3 3 3 A x9 3 connectors 3 F 4 628 F 4 629 5 Remove the engine controller PCB 1 2 screws with washers 2 1 screw with tooth lock washer 3 1 screw black TP 4 1 hook 5 1 5 2 3 4 x4 F 4...

Page 314: ...ng attach the engine controller PCB to the hook 1 and then mount the switchboard 3 to the lower side of the switch arm 2 3 1 2 3 2 2 3 Ensure that the switch arm 1 can move vertically 1 F 4 631 Removing the Main Controller PCB MF4720w MF4712 MF4710 Preparation 1 Remove the left cover Procedure 1 Remove the 3 flat cables 1 and 3 connectors 2 x6 1 2 2 Remove the main controller PCB 1 1 screw bind 2 ...

Page 315: ... cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 F 4 634 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it thr...

Page 316: ...g the Paper Leading Edge Sensor PCB MF4720w MF4712 MF4710 Procedure 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 x4 1 2 F 4 637 F 4 638 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the paper leading edge sensor PCB 1 2 claws 2 x2 1 2 2 F 4 639 F 4 640 Remove the harness retaining spring 1 and 4 connectors 2 ...

Page 317: ... The below picture shows how to wind the harness F 4 641 Removing the Fixing Delivery Paper Width Sensor PCB MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounti...

Page 318: ...20w MF4712 MF4710 Procedure 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 644 F 4 643 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 x4 1 2 F 4 645 F 4 646 Remove the harness re...

Page 319: ...Disassembly Assembly Controller System Removing the Fixing Delivery Paper Width Sensor PCB MF4720w MF4712 MF4710 Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the fixing delivery paper width sensor PCB 1 1 connector 2 claws 3 x2 2 3 3 1 F 4 647 F 4 648 Note The below picture shows how to wind the harness F 4 649 ...

Page 320: ... and Multi Pickup Sensor Unit MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 x2 1 2 F 4 650 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cov...

Page 321: ...y Controller System Removing the Toner Sensor and Multi Pickup Sensor Unit MF4720w MF4712 MF4710 Procedure 2 Disconnect the 2 connectors 1 and put it through the hole A of the left side plate to the inside A A 1 1 x2 3 Remove the drum unit 1 1 F 4 653 F 4 654 4 Remove the toner sensor multi pickup sensor unit 1 wire saddle 2 1 claw 3 2 hooks 4 1 1 2 4 3 F 4 655 ...

Page 322: ...tem Removing the Control Panel Unit L418S L410 L190 Procedure Removing the Control Panel Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the DADF unit Procedure 1 1 2 2 x2 F 4 656 2 Remove the control panel unit 1 1 2 F 4 657 Lift the control panel unit 1 as shown below and release 2 claws 2 ...

Page 323: ...e reader unit 1 and place the host machine with its left side down Caution Be sure to hold the reader unit firmly when turning the machine with its left side down because the reader unit will be forced open by hinge spring pressure 2 Remove the tension unit 1 1 screw 2 F 4 658 1 2 3 Remove the shaft support 1 and remove the drive cover 2 5 screws 3 Caution Be sure to raise the drive cover 2 straig...

Page 324: ...ly Controller System Removing the Drive Belt L418S L410 L190 Procedure 4 Remove the fixing transmission gear 1 and the cartridge transmission gear 2 1 2 5 Remove the drive belt 1 F 4 661 F 4 662 Caution When assembling the drive gear install the cartridge arm 1 according to the position shown in the left picture 1 1 F 4 663 ...

Page 325: ... order shown in the below picture 1 2 3 4 5 6 7 8 9 1 Primary deceleration pulley 6 Gear coupling 2 Timing belt 7 Feed deceleration gear 3 Fixing ratchet gear 8 Compression spring 4 Fixing transmission gear 9 Compression spring 5 Cartridge transmission gear 6 Gear coupling 7 Feed deceleration gear 8 Compression spring 9 Compression spring F 4 664 Caution Align the drive cover 2 with the 14 shaft h...

Page 326: ...the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to disconnect the flat cable in advance to prevent damage to the cable F 4 666 2 Remove the scanner cover 1 2 screws black TP 2 Caution When re...

Page 327: ...e scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 668 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 669 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 670 3 Disconnect the 2 connectors 1 and remove the motor driver PCB 2 2 claws 3 1 hook 4 4 2...

Page 328: ...10 L190 Procedure 4 Free the harness from the harness guide A and B and remove the duplex relay PCB 1 1 claw 2 1 hook 3 A 2 1 B 3 5 Free the motor harness 1 from the harness guide C 6 Remove the motor guide 2 1 screw 3 1 hook 4 3 1 2 4 C F 4 672 F 4 673 7 Lower the tension unit 1 and remove the belt 2 1 2 8 Remove the main motor 1 2 screws with washer 2 x2 2 1 F 4 674 F 4 675 ...

Page 329: ...per side of the motor 1 Removing the Main Fan L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be su...

Page 330: ...ver 1 2 screws black TP 2 Caution When removing the scanner cover be sure that the cover does not get under A part of the right side plate A 1 A 1 1 x2 2 F 4 676 Caution When install the scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 677 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner co...

Page 331: ...pen close lever 1 can move vertically 1 F 4 679 3 Free the fan harness 1 from the harness guide A and put it through the hole B of the right side plate to the outside 1 connector 2 2 1 A B F 4 680 4 Free the harness from the guide A and remove the main fan 1 2 claws 2 x2 1 2 A Caution When mounting the main fan attach the harness 2 to the upper right side of the fan with the fan label 1 facing inw...

Page 332: ...Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 3 2 2 F 4 683 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put i...

Page 333: ...cedure 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and free the harness from the guide A 2 flat cables 2 6 connectors 3 7 connectors 3 1 2 3 3 3 A x9 3 F 4 686 F 4 687 5 Remove the engine controller PCB 1 5 screws with washers 2 1 screw with tooth lock washer 3 1 screw black TP 4 1 hook 5 1 5 2 3 4 ...

Page 334: ...ling attach the engine controller PCB to the hook 1 and then mount the switchboard 3 to the lower side of the switch arm 2 3 1 2 3 2 2 3 Ensure that the switch arm 1 can move vertically 1 F 4 689 Removing the Main Controller PCB L418S L410 L190 Preparation 1 Remove the left cover Procedure 1 Remove the 4 flat cables 1 and 6 connectors 2 x10 1 2 1 1 2 2 Remove the main controller PCB 1 5 screws bla...

Page 335: ... LAN PCB L418S L410 L190 Procedure Removing the FAX NCU PCB L418S L410 L190 Preparation 1 Remove the left cover Procedure 1 Remove the FAX NCU PCB 1 1 flat cable 2 1 connector 3 3 screws 4 x3 x2 1 2 4 4 3 F 4 692 Removing the Wireless LAN PCB L418S L410 L190 Preparation 1 Remove the left cover Procedure 1 Remove the wireless LAN PCB 1 flat cable 2 1 screw 3 1 2 3 F 4 693 ...

Page 336: ...ader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Remove the main controller mounting plate 1 4 screws with washers 2 2 screws black TP 3 x6 1 3 2 2 F 4 694 2 Disconnect the terminal 1 free the harness 2 from the harness guide A a...

Page 337: ...g the Paper Leading Edge Sensor PCB L418S L410 L190 Procedure 3 Remove the harness spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 697 F 4 698 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the paper leading edge sensor PCB 1 2 claws 2 x2 1 2 2 F 4 699 F 4 700 ...

Page 338: ...o wind the harness F 4 701 Removing the Fixing Delivery Paper Width Sensor PCB L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Remove the main cont...

Page 339: ...0 L190 Procedure 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 704 F 4 703 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 c...

Page 340: ...Disassembly Assembly Controller System Removing the Fixing Delivery Paper Width Sensor PCB L418S L410 L190 Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the fixing delivery paper width sensor PCB 1 1 connector 2 claws 3 x2 2 3 3 1 F 4 707 F 4 708 Note The below picture shows how to wind the harness F 4 709 ...

Page 341: ...Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to disconnect the flat cable in advance to prevent damage to the cable F 4 710 2 Remove the scann...

Page 342: ...Procedure Caution When install the scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 712 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 713 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 714 3 Remove the toner sensor multi pickup sensor unit 1 wi...

Page 343: ...ker L418S L410 L190 Procedure Removing the Speaker L418S L410 L190 Preparation 1 Remove the left cover Procedure 1 Disconnect harness from the guide A and remove the speaker 1 1 connector 2 2 wire saddles 3 1 screw 4 1 2 3 A 4 F 4 716 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 F 4 717 ...

Page 344: ...tion 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure Caution Do not disassemble the laser scanner unit because adjustment is required 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 718 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in...

Page 345: ...ponge 3 1 x4 2 2 3 3 Remove the laser scanner unit 1 1 flat cable 2 1 connector 3 x2 1 2 3 F 4 721 F 4 722 Removing the Laser Scanner Unit MF4870dn 4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure Caution Do not disassemble the laser scanner unit because adjustment is required ...

Page 346: ...r Unit MF4870dn 4830d Procedure Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A Ensure that the shutter open close lever 1 can move vertically 1 F 4 724 F 4 725 2 Move the laser scanner unit 1 4 screws 2 1 sponge 3 1 x4 2 2 3 3 Remove the laser scanner unit 1 1 flat cable 2 1 connector 3 x2 1 2 3 F 4 726 F 4 727 ...

Page 347: ...2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure Caution Do not disassemble the laser scanner unit because adjustment is required 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 728 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A ...

Page 348: ...732 Removing the Laser Scanner Unit D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure Caution Do not disassemble the laser scanner unit because adjustment is required 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to t...

Page 349: ... cover 1 2 screws black TP 2 Caution When removing the scanner cover be sure that the cover does not get under A part of the right side plate A 1 A 1 1 x2 2 F 4 734 Caution When install the scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 735 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner...

Page 350: ...bly Assembly Laser Exposure System Removing the Laser Scanner Unit D530 Procedure Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 737 3 Move the laser scanner unit 1 4 screws 2 1 sponge 3 1 x4 2 2 3 F 4 738 3 Remove the laser scanner unit 1 1 flat cable 2 1 connector 3 x2 1 2 3 F 4 739 ...

Page 351: ...Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure Caution Do not disassemble the laser scanner unit because adjustment is required 1 Remove the scanner cover 1 2 screws black TP 2 1 x2 2 F 4 740 Caution When mounting the scanner cover pass the shutter open close lever 1 through the ho...

Page 352: ...sponge 3 1 x4 2 2 3 3 Remove the laser scanner unit 1 1 flat cable 2 1 connector 3 x2 1 2 3 F 4 743 F 4 744 Removing the Laser Scanner Unit MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure Caution Do not disassemble the laser scanner unit because adjustmen...

Page 353: ...r Unit MF4720w MF4712 MF4710 Procedure Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A Ensure that the shutter open close lever 1 can move vertically 1 F 4 746 F 4 747 2 Move the laser scanner unit 1 4 screws 2 1 sponge 3 1 x4 2 2 3 3 Remove the laser scanner unit 1 1 flat cable 2 1 connector 3 x2 1 2 3 F 4 748 F 4 749 ...

Page 354: ...the front cover unit 5 Remove the upper cover Procedure Caution Do not disassemble the laser scanner unit because adjustment is required 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to disconnect the flat cable in advance to prevent damage to the cable F 4 750 2 Remove...

Page 355: ...edure Caution When install the scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 752 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 753 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 754 3 Move the laser scanner unit 1 4 screws 2 1 sponge 3 1 x4 ...

Page 356: ...ure System Removing the Laser Scanner Unit L418S L410 L190 Procedure Disassembly Assembly Laser Exposure System Removing the Laser Scanner Unit L418S L410 L190 Procedure 3 Remove the laser scanner unit 1 1 flat cable 2 1 connector 3 x2 1 2 3 F 4 756 ...

Page 357: ... Transfer Roller MF4890dw MF4880dw Procedure Image Formation System Removing the Transfer Roller MF4890dw MF4880dw Procedure Caution When assembling disassembling the transfer roller do not touch the surface of the roller 1 Open the reader unit 1 and delivery tray 2 and remove the drum unit 3 2 1 3 2 Remove the transfer roller bushing 1 2 claws 2 F 4 757 1 1 2 2 x2 F 4 758 ...

Page 358: ... remove the roller 2 Caution When installing the transfer roller to the host machine be sure to fit the protrusion 2 to the spring 1 1 2 1 1 2 F 4 759 F 4 760 Removing the Transfer Roller MF4870dn MF4830d Procedure Caution When assembling disassembling the transfer roller do not touch the surface of the roller 1 Open the reader unit 1 and delivery tray 2 and remove the drum unit 3 2 1 3 2 Remove t...

Page 359: ...ve the roller 2 Caution When installing the transfer roller to the host machine be sure to fit the protrusion 2 to the spring 1 1 2 1 1 2 F 4 763 F 4 764 Removing the Transfer Roller MF4820d Procedure Caution When assembling disassembling the transfer roller do not touch the surface of the roller 1 Open the reader unit 1 and delivery tray 2 and remove the drum unit 3 1 2 1 2 Remove the transfer ro...

Page 360: ...e the roller 2 Caution When installing the transfer roller to the host machine be sure to fit the protrusion 2 to the spring 1 1 2 1 2 1 F 4 767 F 4 768 Removing the Transfer Roller D530 Procedure Caution When assembling disassembling the transfer roller do not touch the surface of the roller 1 Open the reader unit 1 and delivery tray 2 and remove the drum unit 3 1 2 1 2 Remove the transfer roller...

Page 361: ...er and remove the roller 2 Caution When installing the transfer roller to the host machine be sure to fit the protrusion 2 to the spring 1 1 2 1 2 1 F 4 771 F 4 772 Removing the Transfer Roller MF4780w MF4770n MF4750 MF4730 Procedure Caution When assembling disassembling the transfer roller do not touch the surface of the roller 1 Open the reader unit 1 and delivery tray 2 and remove the drum unit...

Page 362: ...nd remove the roller 2 Caution When installing the transfer roller to the host machine be sure to fit the protrusion 2 to the spring 1 1 2 1 1 2 F 4 775 F 4 776 Removing the Transfer Roller MF4720w MF4712 MF4710 Procedure Caution When assembling disassembling the transfer roller do not touch the surface of the roller 1 Open the reader unit 1 and delivery tray 2 and remove the drum unit 3 1 2 1 2 R...

Page 363: ...remove the roller 2 Caution When installing the transfer roller to the host machine be sure to fit the protrusion 2 to the spring 1 1 2 1 2 1 F 4 779 F 4 780 Removing the Transfer Roller L418S L410 L190 Procedure Caution When assembling disassembling the transfer roller do not touch the surface of the roller 1 Open the reader unit 1 and delivery tray 2 and remove the drum unit 3 3 2 1 2 Remove the...

Page 364: ...edure Disassembly Assembly Image Formation System Removing the Transfer Roller L418S L410 L190 Procedure 3 Hold both shafts 1 of the transfer roller and remove the roller 2 Caution When installing the transfer roller to the host machine be sure to fit the protrusion 2 to the spring 1 1 2 1 2 1 F 4 783 F 4 784 ...

Page 365: ...ove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 F 4 785 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it t...

Page 366: ...move the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the 2 left right reinforcing plates 1 4 screws black TP 2 x4 2 2 1 1 5 Remove the 4 connectors 1 6 Disengage the harness 2 from the harness guide A F 4 788 F 4 789 7 Disengage the fixing harness 4 from the harness holder 3 1 1 4 3 A 2 x4 8 Remove the harness holder 1 1 claw 2 1 2 F 4 790 F ...

Page 367: ...dw Procedure 9 Remove the shaft support 1 of the delivery roller 1 10 Remove the fixing assembly 1 3 screws 2 x3 2 2 1 F 4 792 F 4 793 Caution When mounting the fixing harness wrap the fixing harness 2 around the protruding part 1 of the harness holder pass it through the harness guide A and then mount the connector 3 A 1 2 3 Note The below picture shows how to wind the harness F 4 795 ...

Page 368: ...he right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4870dn Procedure MF4830d 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 F 4 796 MF4870dn 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 2 ...

Page 369: ...nal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 799 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F 4 800 4 Remove the 2 left right reinforcing plates 1 4 screws black TP 2 x4 2 2 1 1 5 Remove the 4 connectors 1 6 Disengage the harness 2 from the harness guide A 7 Disengage the fixing harness 4 from the harness holder ...

Page 370: ...F4830d Procedure 8 Remove the harness holder 1 1 claw 2 1 2 9 Remove the shaft support 1 of the delivery roller 1 F 4 803 F 4 804 10 Remove the fixing assembly 1 3 screws 2 x3 2 2 1 Caution When mounting the fixing harness wrap the fixing harness 2 around the protruding part 1 of the harness holder pass it through the harness guide A and then mount the connector 3 A 1 2 3 F 4 805 ...

Page 371: ...s how to wind the harness F 4 807 Removing the Fixing Assembly MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3...

Page 372: ... guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 810 F 4 809 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the 2 left right reinforcing plates 1 4 screws black TP 2 x4 2 2 1 1 5 Remove the 4 connectors 1 6 Disengage the harne...

Page 373: ...ly Fixing System Removing the Fixing Assembly MF4820d Procedure 7 Disengage the fixing harness 4 from the harness holder 3 1 1 4 3 A 2 x4 8 Remove the harness holder 1 1 claw 2 1 2 F 4 813 F 4 814 9 Remove the shaft support 1 of the delivery roller 1 10 Remove the fixing assembly 1 3 screws 2 x3 2 2 1 F 4 815 F 4 816 ...

Page 374: ... it through the harness guide A and then mount the connector 3 A 1 2 3 Note The below picture shows how to wind the harness F 4 818 Removing the Fixing Assembly D530 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remo...

Page 375: ...ide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 821 F 4 820 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the 2 left right reinforcing plates 1 4 screws black TP 2 x4 2 2 1 1 5 Remove the 4 connectors 1 6 Disengage the harness ...

Page 376: ...ly Fixing System Removing the Fixing Assembly D530 Procedure 7 Disengage the fixing harness 4 from the harness holder 3 1 1 4 3 A 2 x4 8 Remove the harness holder 1 1 claw 2 1 2 F 4 824 F 4 825 9 Remove the shaft support 1 of the delivery roller 1 10 Remove the fixing assembly 1 3 screws 2 x3 2 2 1 F 4 826 F 4 827 ...

Page 377: ...nt the connector 3 A 1 2 3 Note The below picture shows how to wind the harness F 4 829 Removing the Fixing Assembly MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4780w MF...

Page 378: ...e the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 2 3 1 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B F 4 831 F 4 832 Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 833 3 Remove the harness retaining spring 1 from the hook 2 and free the ha...

Page 379: ... MF4770n MF4750 MF4730 Procedure 4 Remove the 2 left right reinforcing plates 1 4 screws black TP 2 x4 2 2 1 1 5 Remove the 4 connectors 1 6 Disengage the harness 2 from the harness guide A 7 Disengage the fixing harness 4 from the harness holder 3 1 1 4 3 A 2 x4 F 4 835 F 4 836 8 Remove the harness holder 1 1 claw 2 1 2 9 Remove the shaft support 1 of the delivery roller 1 F 4 837 F 4 838 ...

Page 380: ...Fixing Assembly MF4780w MF4770n MF4750 MF4730 Procedure 10 Remove the fixing assembly 1 3 screws 2 x3 2 2 1 Caution When mounting the fixing harness wrap the fixing harness 2 around the protruding part 1 of the harness holder pass it through the harness guide A and then mount the connector 3 A 1 2 3 F 4 839 Note The below picture shows how to wind the harness F 4 841 ...

Page 381: ...oard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 2 3 1 F 4 842 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B...

Page 382: ...3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the 2 left right reinforcing plates 1 4 screws black TP 2 x4 2 2 1 1 5 Remove the 4 connectors 1 6 Disengage the harness 2 from the harness guide A F 4 845 F 4 846 7 Disengage the fixing harness 4 from the harness holder 3 1 1 4 3 A 2 x4 8 Remove the harness holder 1 1 claw 2 1 2 F 4 84...

Page 383: ...MF4710 Procedure 9 Remove the shaft support 1 of the delivery roller 1 10 Remove the fixing assembly 1 3 screws 2 x3 2 2 1 F 4 849 F 4 850 Caution When mounting the fixing harness wrap the fixing harness 2 around the protruding part 1 of the harness holder pass it through the harness guide A and then mount the connector 3 A 1 2 3 Note The below picture shows how to wind the harness F 4 852 ...

Page 384: ...ght cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 F 4 853 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the...

Page 385: ...ve the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the 2 left right reinforcing plates 1 4 screws black TP 2 x4 2 2 1 1 5 Remove the 4 connectors 1 6 Disengage the harness 2 from the harness guide A F 4 856 F 4 857 7 Disengage the fixing harness 4 from the harness holder 3 1 1 4 3 A 2 x4 8 Remove the harness holder 1 1 claw 2 1 2 F 4 858 F 4 ...

Page 386: ... Procedure 9 Remove the shaft support 1 of the delivery roller 1 10 Remove the fixing assembly 1 3 screws 2 x3 2 2 1 F 4 860 F 4 861 Caution When mounting the fixing harness wrap the fixing harness 2 around the protruding part 1 of the harness holder pass it through the harness guide A and then mount the connector 3 A 1 2 3 Note The below picture shows how to wind the harness F 4 863 ...

Page 387: ...e the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB 10 Remove the separation pad Procedure 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 F 4 864 2 Disconnect the terminal 1 free the harness 2 from the harnes...

Page 388: ...ding System Removing the Pickup Unit MF4890dw MF4880dw Procedure 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 867 F 4 868 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the shaft retainer 1 1 F 4 869 F 4 870 ...

Page 389: ...nit MF4890dw MF4880dw Procedure 7 Face the front of the host machine downwards 8 Remove the 6 screws TP 1 and the screw with washer 2 x7 2 1 1 F 4 871 F 4 872 9 Remove the pickup unit 2 while opening the pickup tray 1 2 1 Caution When installing removing the pickup unit be sure to do so while opening the pickup tray Note The below picture shows how to wind the harness F 4 874 F 4 873 ...

Page 390: ...ation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad Procedure 1 Remove the 4 screws black TP 1 and 6 screws 2 x10 2 2 1 2 Remove the pickup tray unit 1 2 boss holes 2 2 hooks 3 2 bosses 4 F 4 875 Caution When assembling disassembling the pickup ...

Page 391: ...embly Assembly Pickup And Feeding System Removing the Pickup Tray Unit MF4890dw MF4880dw Procedure Caution Align the 2 boss holes 1 2 hooks 2 and 2 bosses 3 of the pickup tray unit with the pickup unit to mount the unit 1 1 2 2 3 Caution When assembling the pickup tray unit check the positioning of the 6 bosses 1 in the unit 1 ...

Page 392: ... Procedure Removing the Pickup Roller MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad 8 Remove the pickup tray unit Procedure 1 Remove the pickup roller 1 2 claws 2 Caution Do not touch the surface of the roller 1 x2 ...

Page 393: ...3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 F 4 878 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put...

Page 394: ...Solenoid MF4890dw MF4880dw Procedure 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 881 F 4 882 5 Free the pickup solenoid harness 1 from the harness guide A 1 A 6 Remove the screw 1 move the solenoid arm 2 and remove the pickup solenoid 3 1 2 3 F 4 883 F 4 884 ...

Page 395: ... Removing the Separation Pad MF4890dw MF4880dw Procedure Caution The below picture shows how to wind the harness Removing the Separation Pad MF4890dw MF4880dw Procedure Caution When assembling disassembling the separation pad do not touch the surface of the 1 Face the left side of the host machine downwards 2 Remove the separation pad 1 2 screws 2 1 x5 x2 2 F 4 885 ...

Page 396: ... Feed Unit MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Open the rear cover 1 and remove the duplex guide 2 2 claws 3 x2 1 3 2 F 4 886 2 Remove the 2 screws TP 1 and 2 screws tapping 2 using a stubby screwdriver x4 1 1 2 3 Close the rear cover 4 Face the front...

Page 397: ...uplex Solenoid MF4890dw MF4880dw Procedure 5 Remove the duplex feed unit 1 1 claw 2 2 hooks 3 2 1 3 F 4 889 Removing the Duplex Solenoid MF4890dw MF4880dw Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 x2 1 2 F 4 890 ...

Page 398: ...w MF4880dw Procedure Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 891 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 892 2 Free the solenoid harness 1 from the guide A and put it through the hole B of the right side plate to the outside 2 A 1 B 3 Remove the duplex solenoid 1 1 2 F 4 893 F 4...

Page 399: ... 4 in the side panel to mount the solenoid 4 3 1 2 Removing the Pickup Unit MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4870dn 9 Remove the separation pad Procedure MF4870dn 1 Remove...

Page 400: ... MF4870dn MF4830d Procedure x2 1 2 3 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B F 4 896 F 4 897 Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 898 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F 4 899 ...

Page 401: ...embly Assembly Pickup And Feeding System Removing the Pickup Unit MF4870dn MF4830d Procedure 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 5 Remove the harness 1 from the guide A and B 1 A 1 B F 4 900 F 4 901 6 Remove the shaft retainer 1 1 7 Face the front of the host machine downwards F 4 902 F 4 903 ...

Page 402: ...ystem Removing the Pickup Unit MF4870dn MF4830d Procedure 8 Remove the 6 screws TP 1 and the screw with washer 2 x7 2 1 1 9 Remove the pickup unit 2 while opening the pickup tray 1 2 1 Caution When installing removing the pickup unit be sure to do so while opening the pickup tray F 4 904 F 4 905 Note The below picture shows how to wind the harness F 4 906 ...

Page 403: ...ion 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad Procedure 1 Remove the 4 screws black TP 1 and 6 screws 2 x10 2 2 1 2 Remove the pickup tray unit 1 2 boss holes 2 2 hooks 3 2 bosses 4 F 4 907 Caution When assembling disassembling the pickup tr...

Page 404: ...embly Assembly Pickup And Feeding System Removing the Pickup Tray Unit MF4870dn MF4830d Procedure Caution Align the 2 boss holes 1 2 hooks 2 and 2 bosses 3 of the pickup tray unit with the pickup unit to mount the unit 1 1 2 2 3 Caution When assembling the pickup tray unit check the positioning of the 6 bosses 1 in the unit 1 ...

Page 405: ...Procedure Removing the Pickup Roller MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad 8 Remove the pickup tray unit Procedure 1 Remove the pickup roller 1 2 claws 2 Caution Do not touch the surface of the roller 1 x2 1 ...

Page 406: ...t 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4870dn Procedure MF4870dn 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 MF4830d 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 F 4 910...

Page 407: ...d MF4870dn MF4830d Procedure Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 913 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F 4 914 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 5 Free the pickup solenoid harness 1 from the harness guide A 1 A F 4 915 F 4 916 ...

Page 408: ... Procedure 6 Remove the screw 1 move the solenoid arm 2 and remove the pickup solenoid 3 1 2 3 Caution The below picture shows how to wind the harness F 4 917 Removing the Separation Pad MF4870dn MF4830d Procedure Caution When assembling disassembling the separation pad do not touch the surface of the 1 Face the left side of the host machine downwards 2 Remove the separation pad 1 2 screws 2 1 x5 ...

Page 409: ... Feed Unit MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Open the rear cover 1 and remove the duplex guide 2 2 claws 3 x2 1 3 2 F 4 919 2 Remove the 2 screws TP 1 and 2 screws tapping 2 using a stubby screwdriver x4 1 1 2 3 Close the rear cover 4 Face the front ...

Page 410: ...uplex Solenoid MF4870dn MF4830d Procedure 5 Remove the duplex feed unit 1 1 claw 2 2 hooks 3 2 1 3 F 4 922 Removing the Duplex Solenoid MF4870dn MF4830d Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 x2 1 2 F 4 923 ...

Page 411: ...n MF4830d Procedure Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 924 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 925 2 Free the solenoid harness 1 from the guide A and put it through the hole B of the right side plate to the outside 2 A 1 B 3 Remove the duplex solenoid 1 1 2 F 4 926 F 4 ...

Page 412: ...d insert the 2 solenoid positioning protrusions 3 into the 2 positioning holes 4 in the side panel to mount the solenoid 4 3 1 2 Removing the Pickup Unit MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Re...

Page 413: ...ct the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 930 F 4 929 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 931 ...

Page 414: ...sembly Assembly Pickup And Feeding System Removing the Pickup Unit MF4820d Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the shaft retainer 1 1 F 4 933 F 4 934 7 Face the front of the host machine downwards 8 Remove the 6 screws TP 1 and the screw with washer 2 x7 2 1 1 F 4 935 F 4 936 ...

Page 415: ...t be sure to do so while opening the pickup tray Note The below picture shows how to wind the harness F 4 938 F 4 937 Removing the Pickup Tray Unit MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad Procedure 1 Remove the 4 ...

Page 416: ...ickup And Feeding System Removing the Pickup Tray Unit MF4820d Procedure Caution When assembling disassembling the pickup tray unit hold the pickup tray 1 down to attach release it 1 2 4 1 2 3 2 3 F 4 940 Caution Align the 2 boss holes 1 2 hooks 2 and 2 bosses 3 of the pickup tray unit with the pickup unit to mount the unit 1 1 2 2 3 ...

Page 417: ... unit check the positioning of the 6 bosses 1 in the unit 1 Removing the Pickup Roller MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad 8 Remove the pickup tray unit Procedure 1 Remove the pickup roller 1 2 claws 2 Caution...

Page 418: ...ocedure x2 1 2 F 4 941 Removing the Pickup Solenoid MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 F 4 942 ...

Page 419: ...onnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 944 F 4 943 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 ...

Page 420: ...sassembly Assembly Pickup And Feeding System Removing the Pickup Solenoid MF4820d Procedure 5 Free the pickup solenoid harness 1 from the harness guide A 1 A 6 Remove the screw 1 move the solenoid arm 2 and remove the pickup solenoid 3 1 2 3 F 4 947 F 4 948 Caution The below picture shows how to wind the harness ...

Page 421: ...isassembling the separation pad do not touch the surface of the separation pad 1 Face the left side of the host machine downwards 2 Remove the separation pad 1 2 screws 2 1 x5 x2 2 F 4 949 Removing the Duplex Feed Unit MF4820d Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 ...

Page 422: ...ly Assembly Pickup And Feeding System Removing the Duplex Feed Unit MF4820d Procedure 2 Remove the 2 screws TP 1 and 2 screws tapping 2 using a stubby screwdriver x4 1 1 2 3 Close the rear cover 4 Face the front of the host machine downwards F 4 951 F 4 952 5 Remove the duplex feed unit 1 1 claw 2 2 hooks 3 2 1 3 F 4 953 ...

Page 423: ...Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the scanner cover 1 2 screws black TP 2 x2 1 2 F 4 954 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 955 Caution Ensure that the shutter open ...

Page 424: ... 2 Free the solenoid harness 1 from the guide A and put it through the hole B of the right side plate to the outside 2 A 1 B 3 Remove the duplex solenoid 1 1 2 F 4 957 F 4 958 Caution When mounting the duplex solenoid align the solenoid lever 1 with the groove in the link 2 and insert the 2 solenoid positioning protrusions 3 into the 2 positioning holes 4 in the side panel to mount the solenoid 4 ...

Page 425: ...r unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 F 4 959 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connec...

Page 426: ...ding System Removing the Pickup Unit D530 Procedure 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 962 F 4 963 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the shaft retainer 1 1 F 4 964 F 4 965 ...

Page 427: ...nit D530 Procedure 7 Face the front of the host machine downwards 8 Remove the 6 screws TP 1 and the screw with washer 2 x7 2 1 1 F 4 966 F 4 967 9 Remove the pickup unit 2 while opening the pickup tray 1 2 1 Caution When installing removing the pickup unit be sure to do so while opening the pickup tray Note The below picture shows how to wind the harness F 4 969 F 4 968 ...

Page 428: ... cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad Procedure 1 Remove the 4 screws black TP 1 and 6 screws 2 x10 2 2 1 2 Remove the pickup tray unit 1 2 boss holes 2 2 hooks 3 2 bosses 4 F 4 970 Caution When assembling disassembling the pickup tray unit hold th...

Page 429: ...embly Assembly Pickup And Feeding System Removing the Pickup Tray Unit D530 Procedure Caution Align the 2 boss holes 1 2 hooks 2 and 2 bosses 3 of the pickup tray unit with the pickup unit to mount the unit 1 1 2 2 3 Caution When assembling the pickup tray unit check the positioning of the 6 bosses 1 in the unit 1 ...

Page 430: ... Removing the Pickup Roller D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad 8 Remove the pickup tray unit Procedure 1 Remove the pickup roller 1 2 claws 2 Caution Do not touch the surface of the roller 1 x2 1 2 F 4 972 ...

Page 431: ... reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP 3 x2 1 2 3 F 4 973 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When ...

Page 432: ...Solenoid D530 Procedure 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 F 4 976 F 4 977 5 Free the pickup solenoid harness 1 from the harness guide A 1 A 6 Remove the screw 1 move the solenoid arm 2 and remove the pickup solenoid 3 1 2 3 F 4 978 F 4 979 ...

Page 433: ... Removing the Separation Pad D530 Procedure Caution The below picture shows how to wind the harness Removing the Separation Pad D530 Procedure Caution When assembling disassembling the separation pad do not touch the surface of the separation pad 1 Face the left side of the host machine downwards 2 Remove the separation pad 1 2 screws 2 1 x5 x2 F 4 980 ...

Page 434: ...t D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Open the rear cover 1 and remove the duplex guide 2 2 claws 3 x2 1 2 3 F 4 981 2 Remove the 2 screws TP 1 and 2 screws tapping 2 using a stubby screwdriver x4 2 1 2 3 Close the rear cover 4 Face the front of the host mac...

Page 435: ...84 Removing the Duplex Solenoid D530 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to disconnect th...

Page 436: ...r cover 1 2 screws black TP 2 Caution When removing the scanner cover be sure that the cover does not get under A part of the right side plate A 1 A 1 1 x2 2 F 4 986 Caution When install the scanner cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 987 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanne...

Page 437: ... can move vertically 1 F 4 989 3 Free the solenoid harness 1 from the guide A and put it through the hole B of the right side plate to the outside 1 connector 2 2 A 1 B F 4 990 4 Remove the duplex solenoid 1 1 2 Caution When mounting the duplex solenoid align the solenoid lever 1 with the groove in the link 2 and insert the 2 solenoid positioning protrusions 3 into the 2 positioning holes 4 in the...

Page 438: ... right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4780w MF4770n MF4750 9 Remove the separation pad Procedure MF4780w MF4770n MF4750 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws black TP 3 x6 1 2 3 2 MF4730 1 Remove the main controller mounting plate 1 1 screw...

Page 439: ...nit MF4780w MF4770n MF4750 MF4730 Procedure Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 995 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F 4 996 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 5 Remove the harness 1 from the guide A and B 1 A 1 B F 4 997 F 4 998 ...

Page 440: ... Pickup Unit MF4780w MF4770n MF4750 MF4730 Procedure 6 Remove the shaft retainer 1 1 7 Face the front of the host machine downwards F 4 999 F 4 1000 8 Remove the 6 screws TP 1 and the screw with washer 2 x7 2 1 1 9 Remove the pickup unit 2 while opening the pickup tray 1 2 1 Caution When installing removing the pickup unit be sure to do so while opening the pickup tray F 4 1001 F 4 1002 ...

Page 441: ... picture shows how to wind the harness F 4 1003 Removing the Pickup Tray Unit MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad Procedure 1 Remove the 4 screws black TP 1 and 6 screws 2 x10 2 2 1 2 Remove th...

Page 442: ...ckup And Feeding System Removing the Pickup Tray Unit MF4780w MF4770n MF4750 MF4730 Procedure Caution When assembling disassembling the pickup tray unit hold the pickup tray 1 down to attach release it 1 2 4 1 2 3 2 3 F 4 1005 Caution Align the 2 boss holes 1 2 hooks 2 and 2 bosses 3 of the pickup tray unit with the pickup unit to mount the unit 1 1 2 2 3 ...

Page 443: ...he pickup tray unit check the positioning of the 6 bosses 1 in the unit 1 Removing the Pickup Roller MF4780w MF4770n MF4750 MF4730 Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad 8 Remove the pickup tray unit Procedure 1 Remove the pic...

Page 444: ...Preparation 1 Remove the left cover 2 Remove the SADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB MF4780w 9 Remove the wireless LAN PCB MF4780w Procedure MF4780w MF4770n MF4750 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 screws ...

Page 445: ...id MF4780w MF4770n MF4750 MF4730 Procedure x2 1 2 3 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B F 4 1008 F 4 1009 Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 1010 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A F...

Page 446: ...System Removing the Pickup Solenoid MF4780w MF4770n MF4750 MF4730 Procedure 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 5 Free the pickup solenoid harness 1 from the harness guide A 1 A F 4 1012 F 4 1013 6 Remove the screw 1 move the solenoid arm 2 and remove the pickup solenoid 3 1 2 3 Caution The below picture shows how to wind the harness F 4 1014 ...

Page 447: ...pad do not touch the surface of the separation pad 1 Face the left side of the host machine downwards 2 Remove the separation pad 1 2 screws 2 1 x5 x2 2 F 4 1015 Removing the Pickup Unit MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit ...

Page 448: ...e 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 1018 F 4 1017 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x...

Page 449: ...mbly Assembly Pickup And Feeding System Removing the Pickup Unit MF4720w MF4712 MF4710 Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the shaft retainer 1 1 F 4 1021 F 4 1022 7 Face the front of the host machine downwards 8 Remove the 6 screws TP 1 and the screw with washer 2 x7 2 1 1 F 4 1023 F 4 1024 ...

Page 450: ...p unit be sure to do so while opening the pickup tray Note The below picture shows how to wind the harness F 4 1026 F 4 1025 Removing the Pickup Tray Unit MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad Proc...

Page 451: ...ckup And Feeding System Removing the Pickup Tray Unit MF4720w MF4712 MF4710 Procedure Caution When assembling disassembling the pickup tray unit hold the pickup tray 1 down to attach release it 1 2 4 1 2 3 2 3 F 4 1028 Caution Align the 2 boss holes 1 2 hooks 2 and 2 bosses 3 of the pickup tray unit with the pickup unit to mount the unit 1 1 2 2 3 ...

Page 452: ...tray unit check the positioning of the 6 bosses 1 in the unit 1 Removing the Pickup Roller MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad 8 Remove the pickup tray unit Procedure 1 Remove the pickup rol...

Page 453: ...710 Procedure x2 1 2 F 4 1029 Removing the Pickup Solenoid MF4720w MF4712 MF4710 Preparation 1 Remove the left cover 2 Remove the copyboard cover and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB Procedure 1 Remove the main controller mounting plate 1 1 screw with washer 2 1 screw black TP ...

Page 454: ...edure 2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 1032 F 4 1031 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors...

Page 455: ...assembly Assembly Pickup And Feeding System Removing the Pickup Solenoid MF4720w MF4712 MF4710 Procedure 5 Free the pickup solenoid harness 1 from the harness guide A 1 A 6 Remove the screw 1 move the solenoid arm 2 and remove the pickup solenoid 3 1 2 3 F 4 1035 F 4 1036 Caution The below picture shows how to wind the harness ...

Page 456: ...ad 1 Face the left side of the host machine downwards 2 Remove the separation pad 1 2 screws 2 1 x5 x2 2 F 4 1037 Removing the Pickup Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 ...

Page 457: ...sconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 1040 F 4 1039 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 1 2 ...

Page 458: ...mbly Assembly Pickup And Feeding System Removing the Pickup Unit L418S L410 L190 Procedure 5 Remove the harness 1 from the guide A and B 1 A 1 B 6 Remove the shaft retainer 1 1 F 4 1043 F 4 1044 7 Face the front of the host machine downwards 8 Remove the 6 screws TP 1 and the screw with washer 2 x7 2 1 1 F 4 1045 F 4 1046 ...

Page 459: ...p unit be sure to do so while opening the pickup tray Note The below picture shows how to wind the harness F 4 1048 F 4 1047 Removing the Pickup Tray Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad Procedure 1 Remo...

Page 460: ...ckup And Feeding System Removing the Pickup Tray Unit L418S L410 L190 Procedure Caution When assembling disassembling the pickup tray unit hold the pickup tray 1 down to attach release it 1 2 1 4 2 3 2 3 F 4 1050 Caution Align the 2 boss holes 1 2 hooks 2 and 2 bosses 3 of the pickup tray unit with the pickup unit to mount the unit 1 2 2 3 1 ...

Page 461: ...up tray unit check the positioning of the 6 bosses 1 in the unit 1 Removing the Pickup Roller L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the separation pad 8 Remove the pickup tray unit Procedure 1 Remove the pickup roller 1 2 claws ...

Page 462: ... Removing the Pickup Solenoid L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover 6 Remove the duplex feed unit 7 Remove the main controller PCB 8 Remove the FAX NCU PCB 9 Remove the wireless LAN PCB Procedure 1 Remove the main controller mounting plate 1 4 screws with washer 2 2 ...

Page 463: ...2 Disconnect the terminal 1 free the harness 2 from the harness guide A and then put it through the hole B 1 2 A 2 B Caution When connecting the terminal 1 be sure that the contact spring 2 is in contact with it 2 1 F 4 1054 F 4 1053 3 Remove the harness retaining spring 1 from the hook 2 and free the harness 3 from the guide A 1 2 3 A 4 Remove the harness retaining spring 1 and 4 connectors 2 x4 ...

Page 464: ...assembly Assembly Pickup And Feeding System Removing the Pickup Solenoid L418S L410 L190 Procedure 5 Free the pickup solenoid harness 1 from the harness guide A 1 A 6 Remove the screw 1 move the solenoid arm 2 and remove the pickup solenoid 3 1 2 3 F 4 1057 F 4 1058 Caution The below picture shows how to wind the harness ...

Page 465: ...sembling disassembling the separation pad do not touch the surface of the separation pad 1 Face the left side of the host machine downwards 2 Remove the separation pad 1 2 screws 2 x5 x2 1 2 F 4 1059 Removing the Duplex Feed Unit L418S L410 L190 Preparation 1 Remove the left cover 2 Remove the DADF unit and reader unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover...

Page 466: ... Assembly Pickup And Feeding System Removing the Duplex Feed Unit L418S L410 L190 Procedure 2 Remove the 2 screws TP 1 and 2 screws tapping 2 using a stubby screwdriver x4 2 1 2 3 Close the rear cover 4 Face the front of the host machine downwards F 4 1061 F 4 1062 5 Remove the duplex feed unit 1 1 claw 2 2 hooks 3 1 3 2 F 4 1063 ...

Page 467: ...unit 3 Remove the right cover 4 Remove the front cover unit 5 Remove the upper cover Procedure 1 Remove the 2 connectors 1 and 2 flat cables 2 and put them through the hole A of the left side plate to the inside x4 2 A A 1 Caution When removing the scanner cover be sure to disconnect the flat cable in advance to prevent damage to the cable F 4 1064 2 Remove the scanner cover 1 2 screws black TP 2 ...

Page 468: ...r cover be careful not to damage the motor driver PCB 1 and the duplex relay PCB 2 1 2 F 4 1066 Caution When mounting the scanner cover pass the shutter open close lever 1 through the hole A in the scanner cover 1 A F 4 1067 Caution Ensure that the shutter open close lever 1 can move vertically 1 F 4 1068 3 Free the solenoid harness 1 from the guide A and put it through the hole B of the right sid...

Page 469: ...And Feeding System Removing the Duplex Solenoid L418S L410 L190 Procedure 4 Remove the duplex solenoid 1 1 2 Caution When mounting the duplex solenoid align the solenoid lever 1 with the groove in the link 2 and insert the 2 solenoid positioning protrusions 3 into the 2 positioning holes 4 in the side panel to mount the solenoid 4 3 1 2 F 4 1070 ...

Page 470: ...5 5 Adjustment Adjustment Mechanical Adjustment ...

Page 471: ... width 1 Prepare an all black print of A4 size made by the same type of EP Toner cartridge for this printer before visiting the customer site 2 Load the printed sheet facing DOWN on the pickup tray 3 Print a test page 4 Turn off the printer when the leading edge of the paper appears in the face down delivery slot Wait for 60 seconds and open the cartridge door to remove the paper from the printer ...

Page 472: ...6 6 Troubleshooting Troubleshooting Test Print Troubleshooting Items Version Upgrade Log Collector ...

Page 473: ...he operation procedure a 1 sided print 1 Set A4 LTR papers on the pickup tray or the manual feed pickup tray 2 Continuously open and close the Delivery Tray 1 at least 5 times for odd number of times with the Power Switch ON 3 A 1 sided engine test print is executed b 2 sided print 1 Set A4 LTR papers on the pickup tray or the manual feed pickup tray 2 Continuously open and close the Delivery Tray...

Page 474: ...s Setting items Setting value Description Additional information Adjustment Maintenance Special Processing Special Mode Z Not used Mode 1 through 4 Factory setting Mode 2 Make a setting to perform thinning of printed image data by processing of the controller When the value set for the mode increases the amount of thinning increases The image density decreases Printing time does not increase becau...

Page 475: ...controller PCB DCON Control the printer unit DC controller PCB Some UST versions meet less numbers of firmware than those listed above F 6 3 T 6 2 Preparation System Requirements OS one of the following Microsoft Windows 2000 Server Professional Microsoft Windows XP Professional Home Edition Microsoft Windows Server 2003 Microsoft Windows Vista Only as for the 32 bit processor version Microsoft Wi...

Page 476: ...tem Settings Update Firmware The message Will you restart the device to upgrade firmware is shown on the display Select Yes 5 Press OK to automatically restart the device DOWNLOAD MODE is shown on the display 6 Wait for the motor of the host machine to stop Note Press STOP key to cancel Download mode and return to the normal operation Downloading System Software 1 Open UST USTUPD exe 2 Take a note...

Page 477: ...on 5 Click Start button F 6 7 F 6 8 6 Click Yes button for the warning message to start download 7 Click OK button when download is completed 8 Turn off and on the power to restart the device 9 Output the spec report from Service mode to confirm if the firmware version is the same as that on the note taken in Step 2 COPIER FUNCTION MISC P OUTPUT SPEC F 6 9 F 6 10 F 6 11 ...

Page 478: ...er1 0 0 6 zip Create any folder with a write permission on the PC When CanonLogCollector_ Ver1 0 0 6 zip isdecompressed CanonLogCollector exe is extracted 3 Starting the tool Double click to start CanonLogCollector exe The CanonLogCollector screen opens F 6 12 4 Collecting the log Press the Start button on the CanonLogCollector screen When Receiving log is successfully finished is displayed press ...

Page 479: ...ed Receivetimeout was displayed after the Start button was pressed on the CanonLogCollector screen The size of the log file becomes approx 1 KB Collect the log again after setting the USB connection properly The capacity of the log properly collected becomes 200 KB to 300 KB Turn OFF and then ON the main power of the host machine when the log cannot be collected even after the USBconnection has be...

Page 480: ...7 7 Error Codes Error Codes Overview Error Codes ...

Page 481: ...ion describes codes shown in case any problem is occurred Since this product does not collect logs for alarms no alarm code is shown Code type Description Reference Error code Shown for any problem occurred in the device List of error codes Jam code N A Alarm code N A T 7 1 ...

Page 482: ...imes of turning the power OFF ON execute the following remedies 1 Check that the heater resistance measured between 1PIN and 2PIN of the cable J101 on the Main Controller Board is in the following range Replace the Fixing Assembly when the resistance value is abnormal 1 120 V machine Heater resistance 16 0 Ω 7 2 230 V machines Heater resistance 53 8 Ω 7 2 Check the connection of connector J101 on ...

Page 483: ... 2 Replace the connectors between the Main Controller Board J601 J602 and the FAX NCU Board J1201 J1204 3 Replace the FAX NCU Board 4 Replace the Main Controller Board E740 0002 Error detection on either Network Board or Mac address When the same error repeatedly occurs after several times of turning the power OFF ON execute the following remedies 1 Check the connection of the network cable 2 Repl...

Page 484: ...8 8 Service Mode Service Mode Overview COPIER FEEDER FAX TESTMODE ...

Page 485: ...ADJUST FUNCTION Service mode for copier State display mode Adjustment mode Operation inspection mode I O display mode Counter mode Specification setting mode Adjustment mode Operation inspection mode ADF service mode FAX service mode Service mode for test print operation check etc Bit switch registration mode Menu switch registration mode Numeric parameter setting mode NCU parameter setting mode S...

Page 486: ...ader Copyboard Yes FB TARGET G Shading target value for GREEN of Reader Copyboard Yes FB TARGET R Shading target value for RED of Reader Copyboard Yes FB TARGET BW Shading target value of Reader Copyboard in black and white Yes DF TARGET B Shading target value for BLUE of DF Yes DF TARGET G Shading target value for GREEN of DF Yes DF TARGET R Shading target value for RED of DF Yes DF TARGET BW Sha...

Page 487: ... image is larger or smaller than original image Adjustment Adjust by comparing the copy output and original Increase the value when output image is smaller Decrease the value when output image is larger Setting range 30 30 Factory default settings Value after RAM clear 0 Caution This adjustment is targeted to adjust the image position on copy output This may affect to the image of SCAN Yes T 8 4 C...

Page 488: ...cution of lighting function for Scanning Lamp T 8 6 T 8 7 MISC P OUTPUT When outputting the report place paper in the Pickup Cassette and remove paper from the Multi purpose Tray If paper is placed in the Multi purpose Tray the report is not output even if paper is placed in the Pickup Cassette COPIER FUNCTION MISC P Sub item Description SRVC DAT To output the system data list system dump list as ...

Page 489: ...Setting range 50 150 Default value 104 Yes LEFT CST Adjustment of left margin when feeding from cassette Adjustment in 0 1mm Setting range 50 150 Default value 97 Yes LEFT DUP CST Adjustment of left margin on both sides back side when feeding from cassette Adjustment in 0 1mm Setting range 50 150 Default value 96 Yes T 8 11 OPTION BODY COPIER OPTION BODY Sub item Description LOCALE To set country ...

Page 490: ...large or small It can be cleared Yes 2 SIDE 2 sided copy print counter Count up the number of passing through the duplex path in copying printing when ejecting a paper from the machine and duplex stacking Blank paper is also counted Count up by 1 regardless of large or small It can be cleared Yes SCAN Scanning counter Count up the number of scanning when scanning is completed Count up by 1 regardl...

Page 491: ...d DADF model Setting range 30 30 Yes LA SPD Adjustment of magnification ratio in vertical scanning direction in stream feeding Setting range 200 200 Yes FUNCTION FEEDER FUNCTION Sub item Description ADF model only FEED CHK Paper feeding test for only ADF Setting value 1 SADF 2 DADF Yes SL ON Operation start up for solenoid Yes MTR ON Operation start up for motor Yes FEED ON Paper feeding test for ...

Page 492: ...and the followings Bit 4 Declare cut sheets Bit 5 Declare LRT LGL in DIS Bit 6 Prohibit ECM outgoing transmission Bit 7 Prohibit ECM incoming transmission FAX SSSW SSSW No Bit No Function SW 06 Setting of reading criteria Bit 0 Move from DES to pre scan position Bit 1 Pre scan at time other than power ON Bit 2 Restrict document length Bit 3 Stamp option Bit 4 Reading width 0 A4 1 LTR Bit 5 Record ...

Page 493: ...cedure Bit 2 Prohibit calling party from V8 late start Bit 3 Prohibit called party from V8 late start Bit 4 Prohibit V 34 called party from starting fallback Bit 5 Prohibit V 34 calling party from starting fallback SW 29 Not in use SW 30 Bit 0 Support for 1284 device ID Bit 5 New dial tone detection method SW 31 Not in use SW 32 Bit 0 Canon NTT NSX switching SW Bit 5 0 NCU2004 1 NCU2002 SW 33 SW 5...

Page 494: ...CNG monitor duration while the answering device is activated 0 to 999 26 No signal detection level while the answering device is activated 0 to 7 27 Duration to detect preamble of V21 low speed flag 20 10ms 28 50 Not in use 51 Threshold to detect hook 10 to 9999 53 Set DTMF calling counts when receiving FAX remotely 0 to 9999 54 Set BusyTone outgoing duration when using handset 0 to 9999 55 73 Not...

Page 495: ...999 x10ms 06 Signal detection table 0 to 16 07 Signal detection level 0 to 7 08 Number of valid tone detection 0 to 9999 times T 8 26 T 8 27 T 8 28 BUSY TONE0 1 Bit switch Bit No Function 1 0 Bit 0 Bit 1 Bit 2 Signal frequency Changed Not changed Bit 3 Bit 4 Judgment of intermittent signal Start from valid ON signal Start from either valid ON signal or OFF signal Bit 5 Bit 6 Signal form Continuous...

Page 496: ...table 0 to 16 07 Signal detection level 0 to 7 08 Number of valid tone detection 0 to 9999 times T 8 32 T 8 33 T 8 34 AUTO RX 1 Numeric value parameter Parameter No Function Setting range 01 CI ON time 0 to 9999 x10ms 02 Cl long off time 0 to 9999 x10ms 03 Cl off time 0 to 9999 x10ms 04 CL long off time 0 to 9999 x10ms 05 Cl MAX off time 0 to 9999 x10ms 06 Cl wait time 0 to 9999 x10ms 07 CI freque...

Page 497: ...0 to 9999 x10ms 05 T4 timer 0 to 9999 x10ms 06 Signal detection table 0 to 16 07 Signal detection level 0 to 9 08 Number of valid tone detection 0 to 9999 times PBX BUSY TONE 1 Bit switch Bit No Function 1 0 Bit 0 Bit 1 Bit 2 Signal frequency Changed Not changed Bit 3 Bit 4 Judgment of intermittent signal Start from valid ON signal Start from either valid ON signal or OFF signal Bit 5 Bit 6 Signal...

Page 498: ...es MAX Play with maximum volume by pressing OK key Yes T 8 42 T 8 43 SCAN ADJUST ADF ADJ TESTMODE SCAN ADJUST ADF ADJ Sub item Description ADF model only DF SPEED Enter the adjustment value for the magnification ratio in vertical scanning direction in stream feeding Setting range 200 200 Yes DF OFFSET Enter for the adjustment of DF original stop position Setting value 30 30 Yes SENSOR TESTMODE SCA...

Page 499: ...0dpi RGB 300dpi RGB 150dpi Gray600dpi Gray300dpi Gray150dpi Mono600dpi Mono300dpi Mono150dpi PAGE Display the number of bookfeed pages START Start of bookfeed STOP End of bookfeed T 8 46 T 8 47 FAX MODEM TESTMODE FAX MODEM Sub item Description FAX model only FREQ Transmit selected frequency in closed DC circuit using tone generation function of modem Setting values 462Hz 1100Hz 1300Hz 1500Hz 1650H...

Page 500: ...t 2 Execute CNG signal check and FED check Detect CNG after CML relay is OFF Yes PANEL TESTMODE FAX PANEL Sub item Description KEY CHECK START Key check Applicable case Check if all keys functions normally after replacement of Control Panel LED CHECK START LED check Applicable case Check if all LEDs are lit normally after replacement of Control Panel LCD CHECK START LCD check Applicable case Check...

Page 501: ... Service Tools Solvent Oil List General Circuit Diagram General Timing Chart Appendix ...

Page 502: ...th 191mm 8 Philips screwdriver CK 0106 M4 M5 Length 85mm 9 Flat blade screwdriver CK 0111 10 Precision slot head screwdriver CK 0114 6 pieces set 11 Hex key wrench set CK 0151 5 pieces set 12 Smooth file CK 0161 13 Hex screwdriver CK 0170 M4 Length 107mm 14 Nipper CK 0201 15 Long nose pliers CK 0202 16 Pliers CK 0203 17 Stop ring pliers CK 0205 For shaft ring 18 Crimping tool CK 0218 19 Tweezers C...

Page 503: ...vent Oil List Name Usage Remarks Ethyl alcohol Cleaning e g Metal parts Grease Toner contamination Local procurement Keep fire away Lubricant Apply it on gears etc Apply it on shafts and shaft supports etc tool number HY9 0007 Dow Corning made Molykote EM 50L T 9 2 ...

Page 504: ...LED403 KO3 LED404 KO4 LED405 KO5 LED406 KO6 LED407 ESS_LED ESS_KEY GND W LED TR_CABLE 120V TR_CABLE 230V TR_CABLE 100V J909 J905 J912 J501 J751 3 2 1 J1104 GND SWON VH_POWER CI1 CI2 HOOK1 HRL GND GND GND J601 J1201 J1 100V DADF 4in1 WIFI only FAX model only 24P2 2 1 1 2 2 1 3 2 1 1 2 3 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 1 2 2 1 1 2 3 1 2 3 1 2 3 4 5 4 1 3 6 2 5 1 2 2 1 22 14 12 25 23 21 19 17 15 13 1...

Page 505: ...W LED TR_CABLE 120V TR_CABLE 230V TR_CABLE 100V J905 J501 J751 3 2 1 J1104 GND SWON LCD J912 J11 J12 J15 24P2 1 2 2 1 1 2 3 1 2 3 1 2 3 4 5 4 1 3 6 2 5 1 2 22 14 12 25 23 21 19 17 15 13 11 10 9 8 7 6 5 4 3 2 1 16 18 20 26 24 24 26 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 23 25 12 14 22 1 4 3 2 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 12 14 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19...

Page 506: ...D W LED TR_CABLE 120V TR_CABLE 230V TR_CABLE 100V J905 J912 J501 J751 3 2 1 J1104 GND SWON VH_POWER CI1 CI2 HOOK1 HRL GND GND GND J601 J1201 J1 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 1 2 2 1 2 1 1 2 3 1 2 3 1 2 3 4 5 4 1 3 6 2 5 1 2 2 1 22 14 12 25 23 21 19 17 15 13 11 10 9 8 7 6 5 4 3 2 1 16 18 20 26 24 24 26 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 23 25 12 14 22 1 4 3 2 16 1 2 3 4 5 6 7 8 9 10 ...

Page 507: ... LED TR_CABLE 120V TR_CABLE 230V TR_CABLE 100V J905 J501 FM0 4121 J751 3 2 1 J1104 GND J11 J12 J15 SWON J912 4 1 3 6 2 5 1 2 2 1 1 2 3 1 2 3 1 2 3 4 5 1 2 22 14 12 25 23 21 19 17 15 13 11 10 9 8 7 6 5 4 3 2 1 16 18 20 26 24 24 26 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 23 25 12 14 22 1 4 3 2 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 12 14 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 ...

Page 508: ...405 KO5 LED406 KO6 LED407 ESS_LED ESS_KEY GND W LED TR_CABLE 120V TR_CABLE 230V TR_CABLE 100V J905 J501 J751 3 2 1 J11 J12 J15 J912 SWON GND LED ERP 24V RED VIOLET WHITE GRAY BLUE 1 2 3 4 5 1 2 3 1 2 3 1 2 3 4 5 1 2 22 14 12 25 23 21 19 17 15 13 11 10 9 8 7 6 5 4 3 2 1 16 18 20 26 24 24 26 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 23 25 12 14 22 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 2...

Page 509: ...5R GND KO0 LED401 KO1 LED402 KO2 LED403 KO3 LED404 KO4 KO5 XWR1 ESS_LED ESS_KEY ONE_TOUCH 24P2 1 2 3 4 5 6 7 8 1 2 3 4 1 2 3 4 5 6 22 14 12 29 27 25 23 21 19 17 15 13 11 10 9 8 7 6 5 4 3 2 1 16 18 20 26 28 30 24 24 30 28 26 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 23 25 27 29 12 14 22 2 1 2 1 1 2 3 4 5 4 1 3 6 2 5 1 2 2 1 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 12 14 1 2 3 4 1 2 3 4...

Page 510: ...GND 3 3R SCLK SDATA N C N C 5 5R GND KO0 LED401 KO1 LED402 KO2 LED403 KO3 LED404 KO4 KO5 XWR1 ESS_LED ESS_KEY ONE_TOUCH J912 24P2 22 14 12 29 27 25 23 21 19 17 15 13 11 10 9 8 7 6 5 4 3 2 1 16 18 20 26 28 30 24 24 30 28 26 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 23 25 27 29 12 14 22 2 1 1 2 3 1 2 3 1 2 3 4 5 4 1 3 6 2 5 1 2 20 18 16 1 2 3 4 5 6 7 8 9 10 11 13 15 17 19 21 12 14 20 18 16 1 2...

Page 511: ...n Masking emission 1 3 Print temperature control Print command Print command Waiting for a print command 0 5 1 1 0 1 0 8 Max 4 1 1 1 Cleaning bias Cleaning bias Print bias Cleaning bias BD emission Forcible emission Controls at 80 C Relay 1 Print command Scanner motor Laser diode Main motor Pickup solenoid Leading edge sensor Fixing delivery sensor Primary charging bias DC Developing bias AC Devel...

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Summary of Contents for FAXPHONE L190

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Canon FAXPHONE L190, Service Manual, Page: 210 / 511

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Summary of Contents for FAXPHONE L190

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