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Canon LBP 2460 - B/W Laser Printer, Service Manual

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Canon LBP 2460 - B/W Laser Printer Service Manual Download Page 69

E. Video Interface Control
1. Outline
To connect the printer to an external device, such as a host computer, a video controller PCB
(interface PCB) is needed.

This section explains the kinds of interface signals exchanged between the printer and the

video controller PCB, and gives information concerning the sequence of printer operation
making use of interface signals.
a. System block diagram

Figure 2-2-14

CHAPTER 2

2 - 23

Printer

Laser
driver

Scanner

Unit

External device (host computer, etc.)

Video interface signals

(See figure 2-2-15)

Video controller PCB

DC controller PCB

SCANNER
MOTOR DRIVE
signal (/SCND)

LASER DRIVE
signal (VDO)

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Summary of Contents for LBP 2460 - B/W Laser Printer

Page 1: ...COPYRIGHT 1997 CANON INC CANON LBP 2460 REV 1 DEC 1997 PRINTED IN JAPAN IMPRIME AU JAPON RY8 1383 010 DEC 1997 REVISION 1 SERVICE MANUAL ...

Page 2: ...ERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT CANON INC 5 1 Hakusan 7 chome Toride City Ibaraki Pref 302 Japan COPYRIGHT 1997 CANON INC Printed in Japan Imprimé au Japon Use of this manual should be strictly supervised to avoid disclosure of confidential information ...

Page 3: ...VICE INFORMATION NO DATE MODEL LOCATION SUBJECT Printed in Japan Imprime au Japan Canon has published a revised version of LBP 2460 Service Manual RY8 1383 000 Revision 1 RY8 1383 010 includes supplementary materials as well as corrections so please use it in place of the original Revision of Service Manual ...

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Page 5: ...tallation Chapter 2 Operation and Timing A description of the operating principles and timing sequences of the electrical and mechanical systems Chapter 3 The Mechanical System Explanation of mechanical operation disassembly reassembly and adjustment procedures Chapter 4 Troubleshooting Maintenance and servicing reference values and adjustments troubleshooting procedures lubricants and solvents Ap...

Page 6: ...LaserWriter 16 600 PS laser beam printer All graphics were produced with Aldus FreeHand J and all documents and page layouts were created with QuarkXPress J The video images were captured with Canon Hi 8 8mm video camcorder and MASS microsystems Quickimage 24 video capture board and modified with Adobe Photoshop J ...

Page 7: ...2 B Printing Process 2 34 V PICK UP FEED SYSTEM 2 42 A Outline 2 42 B Paper Pick up Unit 2 45 C Fixing and Delivery Unit 2 53 D Paper Jam Detection 2 55 VI OVERALL CONTROL SYSTEM 2 60 A Video Controller PCB 2 60 B Control Panel 2 63 VII OPTION CONTROL SYSTEM 2 64 A Option Controller 2 64 B Operation Outline 2 66 VIII ENVELOPE FEEDER 2 67 A Outline of the Electrical System 2 67 B Paper Pick up Feed...

Page 8: ...2 B Hard Disk 3 33 C DC Controller PCB 3 33 D Pick up PCB 3 34 E Multi purpose Tray PCB 3 34 F Switch Sensor PCB 3 35 G High voltage Power Supply PCB 3 36 H Cassette size Sensing PCB 3 37 I Power Supply 3 37 VIII ENVELOPE FEEDER 3 39 IX DUPLEXING UNIT 3 45 X OPTION CONTROLLER 3 52 XI PAPER DECK 3 53 I MAINTENANCE AND SERVICING 4 1 A Periodic Replacement Parts 4 1 B Expected Lives of Consumable Par...

Page 9: ...hers 4 62 E PC Boards 4 64 F Connectors 4 66 IX VARIABLE RESISTORS LEDS TEST PINS JUMPERS AND SWITCHES ON PC BOARDS 4 69 A DC Controller PCB 4 69 B Switch Sensor PCB 4 70 C Cassette Paper size Sensing Switch PCB 4 70 D High voltage Power Supply PCB 4 71 E Video Controller PCB 4 72 F Envelope Feeder Driver PCB 4 73 G Option Controller PCB 4 74 H Paper Deck Driver PCB 4 75 I Paper level Sensing Swit...

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Page 11: ...ATURES 1 1 II SPECIFICATIONS 1 3 III SAFETY INFORMATION 1 7 IV PARTS OF THE PRINTER 1 8 V INSTALLATION 1 14 VI MAINTENANCE AND SERVICING BY THE CUSTOMER 1 23 VII OPERATION 1 25 CHAPTER 1 PRODUCT INFORMATION ...

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Page 13: ...g capability 6 Memory saving technology Memory reduction technology accomplishes 600 x 600 dpi printing with only 4 MB of memory Complex data is compressed 7 Energy saving and ecology The printer conserves electricity by automatically reducing power consumption when it remains idle for a specified length of time The printer then returns to full power after a button of control pane is pressed or pr...

Page 14: ...This page intentionally left blank CHAPTER 1 1 2 ...

Page 15: ...s 500W x 2 Paper pick up Multi purpose tray upper cassette lower cassette envelope feeder option paper deck option Print paper Plain paper coloured paper labels OHT envelopes Paper sizes Multi purpose tray 98 4mm W x 190 5mm L 297mm W x 432mm L plain paper 64g m2 128g m2 recommended paper above mentioned paper Upper cassette B4 A4 Legal Letter sized plain paper 64g m2 105g m2 recommended paper col...

Page 16: ...40 H mm Weight About 48kg without EP W cartridge about 3kg cartridge Line voltage requirements 100 120V 10 50 60Hz 2Hz 220 240V 10 6 50 60Hz 2Hz Options Duplex unit paper deck envelope feeder Notes 1 At a room temperature of 20 C with rated voltage input 2 When the printer is in READY state at a room temperature of 20 C the time from reception of the PRINT signal from the video controller until an...

Page 17: ...provided for portrait landscape orientations Scalable Pitch CPI Size Points Type face Intellifont 35 type faces Courier Courier Bold Courier Italic Courier Bold Italic CG Times CG Times Bold CG Times Italic CG Times Bold Italic CG Omega CG Omega Bold CG Omega Italic CG Omega Bold Italic Coronet Clarendon Condensed Univers Medium Univers Bold Univers Medium Italic Univers Bold Italic Univers Medium...

Page 18: ...plied from the printer 3 Paper deck 2 000 Sheet Paper Deck PD 9 Feeding speed About 24 sheets min A4 about 13 sheets min A3 Paper types A3 A4 B4 Ledger Legal sized plain paper 64g m2 105g m2 recommended paper Capacity Stacking height of 200mm accommodates about 2 000 sheets of 75g m2 paper Power consumption Max about 75W or less 20 C room temperature rated voltage Dimensions 629 W x 520 D x 651 H ...

Page 19: ...ission reference value set by Underwriters Laboratory UL at the time it is shipped from the factory D Power Supply Unit Safety Care is needed as even though the printer switch may be OFF there is a possibility that a current may still flow on the primary side Be sure to remove the power plug before disassembly and assembly of this printer CHAPTER 1 1 7 Invisible laser radiation when open AVOID DIR...

Page 20: ...rint switch 6 Multi purpose tray 7 Duplex unit door 8 Upper cassette 9 Lower cassette 10 Power switch 11 Delivery cover 12 Face up tray 13 Parallel interface connector 14 Power receptacle 15 Connector for option interface option 16 Expansion board slots 17 Cleaning brush 18 EP W cartridge 19 Pick up unit door CHAPTER 1 1 8 1 2 3 4 5 6 10 9 8 7 17 18 19 11 12 13 14 15 16 ...

Page 21: ...CHAPTER 1 1 9 2 Duplex unit Figure 1 4 4 3 Envelope feeder Figure 1 4 5 1 Duplexing feed roller 2 Duplex unit removal lever 1 Envelope guide 2 Extension tray 3 Weight 1 2 1 2 3 ...

Page 22: ...4 Paper deck Figure 1 4 6 Figure 1 4 7 1 Feed cover 2 Tray 3 Interface connectors 4 Power receptacle CHAPTER 1 1 10 1 2 3 4 ...

Page 23: ...ion pad 7 Multi purpose tray 8 Feed roller 1 9 Feed roller 2 10 Separation roller 11 Pick up roller 12 Registration roller 13 Transfer charging roller 14 Photosensitive drum 15 Primary charging roller 16 Lower cassette 17 Upper cassette 18 Duplexing unit option 19 Fixing upper roller 20 Duplex feed roller Duplexing unit 21 Fixing lower roller 22 Duplex deflector 23 Face up deflector 24 Switchback ...

Page 24: ...2 Envelope feeder Figure 1 4 9 1 Feed rollers 2 Separation guide 3 Separation rollers 4 Pick up rollers CHAPTER 1 1 12 3 2 1 4 ...

Page 25: ...CHAPTER 1 1 13 3 Paper deck Figure 1 4 10 1 Deck 2 Paper guides 3 Pick up roller 4 Feed roller 1 5 Feed roller 2 6 Registration rollers 7 Separation roller 3 2 6 1 4 5 7 ...

Page 26: ...6 Power frequency 2Hz rated frequency 2 Operating environment Install in a location that meets the following conditions Level flat surface Temperature humidity within the following ranges Surrounding temperature 10 to 32 5 C Surrounding humidity 20 to 80 RH relative humidity without condensation Cool well ventilated space Do not install in the following locations Exposed to direct sunlight If you ...

Page 27: ...cassette 2 Cartridge 1 Open the bag holding the cartridge and take out the cartridge 2 Remove the tape and the black sheet from the printer 3 Hold the cartridge on each side as shown in figure 1 5 7 and slowly rock it 5 to 6 times to evenly distribute the toner 4 Place the cartridge on a flat surface While holding down on the top of the cartridge with one hand grasp the tab with the other and gent...

Page 28: ...ical static from your body by touching the metal frame of the printer prior to installing the PCB in order to avoid causing damage by the difference in static charge at that time 1 Open the option controller packaging 2 Remove the plastic bag from the optional controller 3 Loosen the 2 screws on the back of the printer and pull out the PCB 4 Remove the screw holding the option interface cover of t...

Page 29: ...hown below 6 Set the option controller with the 3 supplied screws Figure 1 5 3 7 Insert a connector Figure 1 5 4 8 Insert the PCB to the printer and tighten the 2 screws CHAPTER 1 1 17 Screws Option controller Option controller Connector ...

Page 30: ...ment 5 Open the feed cover and remove the 2 spacers 6 Open the deck and peel the tape off 7 Peel off the tape holding the latch of the paper guide b Installation 1 Carry the paper deck to the installation location and lock the casters 2 Rotate the 4 adjusters to install it on the floor 3 Open the feed cover 4 Align the paper deck and the printer in the same direction and have 4 people lift the pri...

Page 31: ...s 1 Turn on the power of external equipment then the printer Turn the power off in the reverse sequence If the power of external equipment is turned on off while the printer is on noise may be transmitted through the connection cable between the external equipment and the printer and error may occur on the printer 2 Turn off the power of both the printer and the external equipment before plugging ...

Page 32: ...organic photoconductor OPC is used in the photosensitive drum it will deteriorate if exposed to strong light As there is toner in the cartridge be sure to explain to the customer the need to be careful in handling and storing unsealed cartridges a Storage environment 1 Be sure to store in the aluminum bag 2 Avoid locations exposed to direct sunlight near windows etc Do not leave them in cars for a...

Page 33: ...print 3 to 5 pages of test patterns after loading the cartridge in the printer 2 When transporting the printer remove the cartridges Either insert the cartridge in the aluminum bag or wrap it in a thick cloth to ensure light does not penetrate it 3 Do not leave the cartridge near CRT displays disk drives or floppy disks The magnetism generated by the cartridge may destroy their data 4 As the photo...

Page 34: ...e drum for 5 minutes and it is left in a dark area for 5 minutes it will recover to a normal state and will be no effect on prints However be sure to not expose it to direct sunlight The strength of sunrays are about 10000 lux to 30000 lux CHAPTER 1 1 22 ...

Page 35: ...liminator roller eliminator Item soft dry cloth Transfer guide Customer maintenance Rock the cartridge to redistribute toner If necessary relace it When replacing the cartridge clean the transfer guide area with the Transfer charging roller Transfer charging Transfer guide When replacing the cartridge clean the static charge eliminator with the green cleaning brush in the printer Static charge ...

Page 36: ...Table 1 6 2 CHAPTER 1 1 24 area Item the soft dry cloth Registration roller When replacing the cartridge clean the registration roller area with Customer maintenance ...

Page 37: ...ns cannot control identify available typefaces and check the status of the printer The operation panel consists of the status indication display eight indicator lights and seven menu and operation keys Figure 1 7 1 CHAPTER 1 1 25 POWER ERROR ON LINE CONTINUE FORM FEED MENU ITEM PLUS MINUS SHIFT RESET ENTER STAPLE DISK 1 2 3 4 5 6 7 8 9 10 11 12 14 13 16 17 15 ...

Page 38: ...ettings which can be changed The display keeps you informed about the printer s operation status lets you make menu selections warns you about problems and identifies errors FORM FEED key 5 Performs a FORM FEED and prints data remaining in the FORM printer If the FORM FEED indicator is on data remains in the printer only with PCL Press ON LINE to take the printer off line Press FORM FEED to print ...

Page 39: ...first item To scroll back through the items in the opposite direction press the SHIFT and ITEM keys Depending on what options you have installed some items may not appear CONTINUE key 14 Restarts printing after the printer displays a message and halts printing For most situations after you press CONTINUE the message clears and printing resumes When the multi purpose tray is used as a manual feed s...

Page 40: ...t job Do not turn the power off otherwize you may lose print data Off The printer is off line You can now use the printer control panel keys to view and change settings When off line the printer cannot accept data for printing CHAPTER 1 1 28 ...

Page 41: ...menu Press the MENU key until you see the item 5 Press the PLUS MINUS key until you display the values you want to change 6 If you want to change the setting press the PLUS MINUS key until the value you want is displayed Then press the ENTER key 7 Press the ON LINE key to set the printer on line Table 1 7 1 list the Menu Operation Flow 2 Restoring the default settings There are several types of de...

Page 42: ...stores all menu settings to their factory settings with the exception of the page count value multi purpose tray page size envelope feeder size and display language To perform a cold reset press and hold down the ON LINE key while you turn on the printer The printer displays the message COLD RESET followed by WARMING UP When the printer comes on line the factory default settings are restored CHAPT...

Page 43: ...ENU SHOW PAGE COUNT TEST PRINT PRINT PS FONTS PRINT PCL FONTS PRINT PS DEMO PRINT PCL DEMO CONTINUOUS TEST STAPLE TEST PRINT ERRS OFF PS MENU At Menu level Item level Value level Press MENU SHIFT and MENU ITEM SHIFT and ITEM PLUS MENUs SHIFT and PLUS MINUS To move Forward Back Forward Back Forward Back FEEDER MENU FEED UPPER OUTPUT TOPOUTPUT BIN LOWER MPT ENVELOPE PAPER DECK SIDE OUTPUT BIN OPT OU...

Page 44: ...CHAPTER 1 1 32 ...

Page 45: ... in front of such as SCNON A signal that is H or has a name without a slash is active at the supply voltage level indicating that the signal is being output and inactive at ground level indicating that the signal is not being output A signal that is L or has a slash in front of its name is active at ground level and inactive at the supply voltage level There is a microcomputer in this printer But ...

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Page 47: ...roller Primary charging roller Photos ensitive drum Face up tray Scanning mirror Scanner motor ENGIN CONTROL SYSTEM OPTION CONTROL SYSTEM Operation panel Low voltage power supply High voltage power supply Video controller PCB Option controller PCB PAPER PICK UP FEED SYSTEM Multi purpose tray Envelope feeder pick up unit Pick up control unit Envelope feeder optional DC controller PCB Face down tray...

Page 48: ...nting temperature of the fixing roller so that the printer is ready to print During this period the printer maintains the printing temperature of the fixing rollers If a PRNT signal is input from the video controller the INITIAL ROTATIONS period begins immediately To deliver the final page and to clean the transfer charging roller To form an image on the photosensitive drum according to the VDO si...

Page 49: ...nsfer negative bias ON Development AC bias ON Checks if the cartridge is installed and if there is toner in it Has fixing temperature reached 150 C Has fixing temperature reached 150 C Main motor scanner motor pick up roller registration roller primary AC transfer negative bias ON Main motor scanner motor pick up roller registration roller primary AC transfer negative bias ON During this period ch...

Page 50: ...yout of major ICs is shown by Figure 2 2 1 and block diagram Figure 2 2 2 2 Explanation of operations of each block a CPU IC201 An 8 bit single chip microcomputer HD6433388A79F by Hitachi is used The CPU is a one chip type in which ROM and RAM are built in and controls the operation of the engine according to the control program stored in the ROM b Expansion I O IC203 Its functions are to control ...

Page 51: ...C 203 Expansion I O IC 201 CPU IC 205 Gate array Bus Bus Envelope feeder Serial line DC controller Duplex unit I O I O I O IC 203 Expansion I O IC 201 CPU IC 205 Gate array Serial line Serial line Serial line Video controller Option controller ...

Page 52: ...Lifting plate PS1302 J214 7 J1301 7 MPTPS 6 6 MPTLS 3 3 P5VB2 J219 18 J1201 4 DC controller PCB L when the sensor detects pape L when the sensor detects pape L when the pick up unit door is open L when the sensor detects the lower cassette L when the sensor detects the upper cassette These sensors detect the amount of paper remaining in the lower cassette These sensors detect the amount of paper r...

Page 53: ... SW1603 SW1604 USIZE1 USIZE2 USIZE3 USIZE4 Face down tray paper full sensor Face down tray delivery sensor Fixing unit delivery sensor Switch sensor PCB Door switch Fixing unit EP W cartridge Toner sensor Cassette paper size sensing switch PCB Cassette paper size sensing switch PCB High voltage power supply PCB Lower cassette paper size sensing switch Upper cassette paper size sensing switch Detec...

Page 54: ...in proportion to intensity of laser beam is input VDO signal L to forcibly switch the laser on Switches the laser on when the LENBL signal and this signal are L J202 1 3 4 5 7 2 6 8 J1001 9 7 6 5 3 8 4 2 5V J220 A1 B1 A2 B2 B3 B4 B5 A6 B6 A7 B7 A8 B8 A9 B9 High voltage power supply PCB 24VB LLCONT PD LENBL LON VDO A10 B10 prescribed speed L to drive the scanner motor Scanner motor reference clock ...

Page 55: ...to rotate at low speed L when the exhaust fan runs normally H to rotate at high speed L to rotate at low speed L when the exhaust fan runs normally H to rotate at high speed L to rotate at low speed L when the suction fan runs normally H to rotate at high speed L to rotate at low speed L when the exhaust fan runs normally L to run the registration roller Pick up motor rotation control signal L to ...

Page 56: ...te the manual feeding pick up roller L to deliver printed paper face up L to turn the relay off and cut power to the fixing heater Fixing main heater drive signal pulse L when the current transformer detects power flow to in the main heater For 220 V model only When the FSRDIE signal is output and this signal is L the main heater turns on For 220 V model only When the FSRDIE signal is output and t...

Page 57: ... on the surface of the upper fixing roller If the surface temperature rises the TH1 resistance increases and the voltage of the FIXING ROLLER TEMPERTURE SENSE signal FSRTH decreases Based on the FSRTH signal voltage the microcomputer CPU on the DC controller controls the FIXING MAIN HEATER DRIVE signal FSRD1E and FIXING SUB HEATER DRIVE signal FSRD2E which maintain the surface temperature of the u...

Page 58: ...he rated voltage of the fixing main heater and the fixing sub heater to prevent the installation of a wrong fixing unit If they do not match the DC controller regards them as different stops the printer and reports it to the video controller The printer has three protection functions to prevent wrong activation of the fixing heater The CPU monitors the thermistor voltage If it is abnormal the CPU ...

Page 59: ...HEATER TYPE SENSE signal FSRCT2 are L when the power to the fixing roller heater is interrupted e Maximum temperature detection The CPU detects that the thermistor detected temperature exceeds about 230 C during standby or printing f Warmup error detection The CPU detects this error if the fixing unit does not reach the target temperature see table 2 2 1 within 180 seconds after warmup starts g Br...

Page 60: ...R C00 C01 C02 C03 C04 C05 C06 B12 B13 B14 B15 B16 B17 C14 B27 CPU IC201 P72 32 J222 1 4 2 3 9 6 10 7 2 4 8 11 12 13 Current transformer Current transformer Fixing roller Thermistor Thermoswitch RL101 5V 5V 5V 5V 5V 5V Fixing roller heater J217 1 J217 5 J217 3 RLDSNS Safety circuit 220 240V ONLY DC controller PCB GATE ARRAY IC203 Low voltage power supply circuit Power supply unit ...

Page 61: ...U outputs the READY signal RDY to the video controller If this temperature is not reached within 180 seconds after the fixing roller heater turns on the CPU assumes that a fixing unit failure has occurred 3 After the RDY signal is output the CPU keeps the upper fixing roller temperature at 169 to 177 C until the PRINT signal PRNT is sent from the video controller Figure 2 2 10 CHAPTER 2 2 15 230 1...

Page 62: ... adjust the nip width in two steps by changing the spring pressure of the lower fixing roller If an envelope wrinkles after it is printed set the envelope position lever to the envelope position Normal mode Envelope mode Figure 2 2 11 CHAPTER 2 2 16 1 2 ...

Page 63: ...This page intentionally left blank CHAPTER 2 2 17 ...

Page 64: ...CD J701 A8 DBDCD DENADJ HVT1DCD HV1FRQ J701 A10 J701 B10 J701 A9 J701 B9 GND To developing cylinder From toner sensor To transfer charging roller 24V 21 5V Primary DC Generation Circuit Developing DC Generation Circuit AC Current detection Circuit Toner detection Circuit AC Transformer DC Transformer To primary charging roller DC Transformer Transfer Negative Voltage Transformer Discharge Voltage ...

Page 65: ...eveloping cylinder The developing DC bias changes according to the IMAGE DENSITY ADJUSTMENT signal DENADJ making the image density adjustable c Transfer charging roller voltage generation The negative between page and print bias are applied to the transfer charging roller according to the print sequence The negative bias voltage is applied to the transfer charging roller at an appropriate timing t...

Page 66: ...e second side of a duplex print e Toner sensing cartridge sensing The EP W cartridge has a toner sensor The DC controller detects the toner level and whether a cartridge is installed when the developing AC bias is applied to the developing cylinder by the DEVELOPING AC BIAS DRIVE signal by checking the TONER LEVEL signal TONRS voltage CHAPTER 2 2 20 ...

Page 67: ...Function If a short circuit or other problems on the load side cause an excessive current flow from the 24VDC or 5VDC power supplies the excess current protection system automatically shuts off the output voltage to protect the power supplies CHAPTER 2 2 21 Phototriac coupler Phototriac coupler Phototriac coupler Phototriac coupler Current transformer Current transformer Safety circuit Heater driv...

Page 68: ...es not output DC voltage it is necessary to turn the power switch to OFF correct the problem in the faulty load then power the printer ON again If excess current flows through the AC line the circuit breaker in the power supply turns OFF to cut off the output voltage CHAPTER 2 2 22 ...

Page 69: ...hanged between the printer and the video controller PCB and gives information concerning the sequence of printer operation making use of interface signals a System block diagram Figure 2 2 14 CHAPTER 2 2 23 Printer Laser driver Scanner Unit External device host computer etc Video interface signals See figure 2 2 15 Video controller PCB DC controller PCB SCANNER MOTOR DRIVE signal SCND LASER DRIVE ...

Page 70: ...b Video interface signals Figure 2 2 15 CHAPTER 2 2 24 BD PPRDY RDY VSREQ SBSY STTS PCLK PDLV PFED SPCHG CBSY PRNT VSYNC CPRDY VDO CMND CCLK FPCS FPO FPI FPCK Video controller PCB DC controller PCB ...

Page 71: ...th the HORIZONTAL SYNC signal BD and VERTICAL SYNC signal VSYNC from the DC controller to the laser driver through the DC controller In response to the VDO signal the laser driver switches the laser diode ON and OFF The laser beam is scanned repeatedly across the photosensitive drum with the scanning mirror to form the latent electrostatic image of the original image The latent electrostatic image...

Page 72: ...s L The modulated laser beam is aligned by a collimator lens and a cylindrical lens into a parallel beam that strikes the scanning mirror that is rotating at a constant speed The beam reflected from the mirror is brought to a point of focus on the photosensitive drum by the focusing lens located after the scanning mirror As the scanning mirror rotates at a constant speed the beam is scanned across...

Page 73: ... the switching circuit and the laser diode is switched ON and OFF in response to the VDO signal when the VIDEO DATA ENABLE signal LENBL described later is L 2 Automatic laser emisison control The CPU on the DC controller controls the intensity of the laser beam according to the APC1 signal laser beam intensity rough adjustment signal and APC2 signal laser beam intensity fine adjustment signal The ...

Page 74: ...n control The gate array IC205 generates an UNBLANKING signal based on the BD INPUT signal BDI sent from the BD PCB of the laser scanner unit IC205 sets the FORCIBLE LASER ON signal LON to L in the unblanking period When the LON signal is L the laser driver turns the laser diode on The laser beam emitted from the LON signal strikes the small fixed BD mirror located in the light path where the lase...

Page 75: ... not recognize the paper width So the T1 and T2 values are assumed to be UNIVERSAL size 297 0mm 635 0mm the maximum paper width for this printer 3 The CPU detects when the trailing edge of the paper passes through the registration paper sensor PS1 determining the paper size of the loaded paper The image is then masked according to the detected paper size CHAPTER 2 2 29 BD MSK TOPE T2 T1 2 mm 2 mm ...

Page 76: ...he scanner motor using the SCNCLK signal When the scanner motor reaches its prescribed speed it sets the SCANNER MOTOR READY signal SCNRDY signal to L The CPU on the DC controller PCB monitors the SCNRDY signal through the gate array to make sure that the scanner motor runs at the correct speed The CPU notifies to the video controller of a scanner failure in the following cases a When the SCNRDY s...

Page 77: ...This page intentionally left blank CHAPTER 2 2 31 ...

Page 78: ...dulated by the VDO signal is exposed to the photosensitive drum surface The latent image formed on the photosensitive drum is changed to a visible image by the toner on the developing cylinder then transferred onto paper by the transfer charging roller Residual toner on the photosensitive drum surface is scraped off by the cleaning blade The potential on the drum is made uniform by the primary cha...

Page 79: ...nt drive signal HVTCRTD Fixing roller bias drive signal HRLBD Discharge bias drive signal DCHGBD Primary bias frequency output signal HV1FRQ Discharge bias switch signal DCHGUP Primary DC bias drive signal HV1DCD Developing DC bias drive signal DBDCD High voltage power supply DC controller PCB Video controller PCB Lower fixing roller Lower cassette pick up roller Upper cassette pick up roller Tran...

Page 80: ...OPC and the base is aluminum Figure 2 4 3 The printing process can be divided into five major stages 1 Electrostatic latent image formation stage Step 1 Primary charge Step 2 Scanning exposure 2 Developing stage Step 3 Development 3 Transfer stage Step 4 Transfer Step 5 Separation 4 Fixing stage Step 6 Fixing CHAPTER 2 2 34 Cartridge Blade Primary charging roller Photosensitive drum Cleaning blade...

Page 81: ...veloping stage Paper path tion Registration Cassette feed Electrostatic latent image formation stage Direction of drum rotation Print delivery 6 Fixing 7 Drum cleaning 1 Primary charge Multi purpose tray feed 2 Scanning exposure Drum cleaning stage 5 Separa 4 Transfer Transfer stage 3 Develop ...

Page 82: ...ation of the latent image formation a uniform negative potential is applied to the photosensitive drum surface For primary charge the printer uses the charging method which directly charges the drum The primary charging roller is made of conductive rubber In addition to DC bias AC bias has been applied to the primary charging roller to keep the potential on the drum s surface uniform The DC bias i...

Page 83: ...ge on the surface of the drum to create a visible image This printer uses the toner projection development method with a single component toner Step 3 Development Figure 2 4 8 Note Charges on the exposed area of the photosensitive drum are shown as positive in this figure In actuality they are negative but they are more positive than those on the developing cylinder CHAPTER 2 2 37 Laser beam Unexp...

Page 84: ...o the developing cylinder to help project the toner particles to the drum surface and improve the contrast of the printed image The center voltage of the AC bias 1600 Vp p varies with the DC bias voltage The change in the DC bias changes the potential difference between the cylinder and drum so the density of the print can be adjusted It can be done through a command from an external device This p...

Page 85: ...arging roller to the drum The transfer charging roller is cleaned by removing the toner on its surface to the drum Step 5 Separation Figure 2 4 11 The stiffness of the paper causes it to separate from the drum Thin paper or curled sheets to be duplex printed may not separate but remain wrapped around the drum To prevent this a negative bias is applied to the static charge eliminator to reduce elec...

Page 86: ...eating the paper and applying pressure This fuses the toner particles onto the paper to create a permanent image Step 6 Fixing Figure 2 4 12 The upper and lower fixing roller surfaces are covered with teflon tubes with a very low adhesive property The negative DC bias is applied to the upper fixing roller to prevent the toner from adhering to the rollers CHAPTER 2 2 40 Halogen heater Paper Toner D...

Page 87: ...eaning stage so that the next print image will be clear and distinct Step 7 Drum cleaning Figure 2 4 13 The residual toner on the drum surface is scraped away with the cleaning blade to clean the drum surface in preparation for the next print The removed toner is collected in the cleaner container CHAPTER 2 2 41 Cleaner container Cleaning blade Sweeper strip Photo sensitive drum ...

Page 88: ...the manual feeding pick up roller turns and feeds a sheet of paper from the multi purpose tray into the printer The paper is controlled by the registration roller so that the leading edge of the toner image on the photosensitive drum matches the leading edge of the paper The paper is fed transferred then separated from the drum fed to the fixing unit and delivered onto the face up or face down tra...

Page 89: ...208 PS2 PS1301 PS1 PS1403 PS1402 SW1601 SW1602 SW1603 SW1604 SW1601 SW1602 SW1603 SW1604 PS1401 PS1205 PS1206 PS1203 PS1204 3 2 1 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 PS1302 Multi purpose tray PCB 1 6 1 7 Switch sensor PCB 3 2 1 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 FACE DOWN TRAY DELIVERY SENSE signal FDOUTS FACE DOWN TRAY PAPER FULL SENSE signal FDFULS FIXING UNIT DELIVERY SENSE signal FPOU...

Page 90: ...roller Transfer charging roller Feed roller 2 Feed roller 1 Separation roller Separation roller Pick up roller Registration roller Photosensitive drum 3 2 1 4 5 6 7 8 REGISTRATION CLUTCH DRIVE signal REGCLD MAIN MOTOR DRIVE signal MMRDY PICK UP MOTOR DRIVE signal FEED CLUTCH DRIVE signal FEEDCLD CASSETTE PICK UP SOLENOID DRIVE signal PUPSLD MANUAL FEED CLUTCH DRIVE signal MPTCLD LIFTING PLATE SOLE...

Page 91: ...ck up roller feed roller 1 and separation roller on the upper cassette to enable printer to feed paper from the upper cassette When it rotates counter clockwise it drives the cassette pick up roller feed roller 1 and separation roller on the lower cassette to enable the printer to feed paper from the lower cassette Following this the cassette pick up solenoid SL1 turns on the main motor then drive...

Page 92: ...ing of sheets note Almost full High Low Almost empty 200 490 sheetes 50 260 sheetes 110 sheetes or less 2 4 3 2 1 1 2 3 4 paper level Remaining number 430 sheetes or more Note Plain paper 75g m2 recommended paper PS1204 or PS1206 PS1203 or PS1205 Light blocking plate ...

Page 93: ...m the upper cassette A4 tow pages continuously print Unit Seconds VERTICAL SYNC signal VSYNC STBY INTR PRINT STBY LSTR 3 0 0 52 0 03 0 52 0 06 0 06 0 03 PRINT signal PRNT Main motor MT1 Pick up motor SMT1 Cassette pick up solenoid SL1 Feed clutch CL2 Registration clutch CL1 Pick up unit paper sensor PS2 Registration paper sensor PS1 Fixing unit paper sensor PS1403 About 1 1 About 0 9 About 1 5 Pic...

Page 94: ...otor MT1 drives the upper or lower lifter to raise the paper in the cassette The MT1 power is transmitted to the cassette pick up roller lowering cam in order to lower the cassette pick up roller to the paper surface so that one sheet can be fed The lifter is not raised until the surface of the paper in the cassette drops to a certain level When the paper surface reaches that certain level the pic...

Page 95: ...Figure 2 5 7 CHAPTER 2 2 49 Cassette pick up cam Cassette feed solenoid Cassette pick up roller shaft Lower lifter ...

Page 96: ...otational force via the transported paper On the other hand if multiple sheets of paper are picked up the low friction force between the sheets of paper result in a weak rotational force being transmitted to the separation roller from feed roller 1 Consequently the separation roller s own rotational force separates the extra sheet Figure 2 5 8 CHAPTER 2 2 50 Pick up roller Print paper through the ...

Page 97: ...ng pick up roller Paper pressed against the manual feeding pick up roller by the lifting plate is picked up by the pick up roller Unnecessary sheets are removed by the separation pad and one sheet is fed into the printer by feed roller 2 The subsequent operations are almost the same as for those of cassette feeding except that SL2 is turned on again straight after the rotation of the registration ...

Page 98: ...03 0 14 1 87 0 55 About1 1 Unit Seconds PRINT signal PRNT Main motor MT1 Lifting plate solenoid SL2 Munual feed clutch CL3 Registration clutch CL1 Registration paper sensor PS1 Pick up timing from the munual feed A4 tow pages continuously print Power switch ON VERTICAL SYNC signal VSYNC ...

Page 99: ...very sensor PS1403 Figure 2 5 11 CHAPTER 2 2 53 PS1401 PS1402 PS1403 MT1 SL3 Upper fixing roller DC controller PCB PS1401 Face down tray paper full sensor PS1402 Face down tray delivery sensor PS1403 Fixing unit delivery sensor SL3 Face up solenoid MT1 Main motor Face up delivery roller Flapper Fixing unit delivery roller Lower fixing roller FACE UP SOLENOID DRIVE signal FUSLD FACE DOWN TRAY DELIV...

Page 100: ...deflector to the face up tray and the paper is delivered through the face up tray If FUSLD is H the paper is delivered through the face down tray on the top of the printer The paper delivered through the face down tray is detected by the face down tray delivery sensor PS1402 When the face down tray becomes full this is detected by the face down tray paper full sensor PS1401 CHAPTER 2 2 54 ...

Page 101: ...ed in memory If the CPU determines that a jam has occurred it stops print operation and notifies the jam to the video controller Note T1 T2 and T3 times indicate the minimum and maximum sizes of paper 1 Cassette pick up delay jam The CPU detects a cassette pick up delay jam has occurred if the paper does not reach the pick up unit paper sensor PS2 within the prescribed time after the paper has bee...

Page 102: ...ry delay jam has occurred if the paper has not reached the fixing unit delivery sensor PS1403 within the prescribed time after the VERTICAL SYNC signal VSYNC has been received Figure 2 5 14 CHAPTER 2 2 56 Unit Seconds Unit Seconds Paper pick up sensor PS2 Jam check Registration paper sensor PS1 Main motor PRINT Abnormal Normal 2 3 2 3 PRINT Unit Seconds Unit Seconds Vertical sync signal VSYNC Jam ...

Page 103: ...ry delay jam has occurred if the paper has not reached the face down tray delivery sensor PS1402 within the prescribed time after the VERTICAL SYNC signal VSYNC has been received Figure 2 5 16 CHAPTER 2 2 57 Unit Seconds Unit Seconds PRINT Abnormal Normal T1 T1 PRINT Vertical sync signal VSYNC Jam check Fixing unit delivery sensor PS1403 Main motor T1 5 0 seconds A4 7 1 seconds Ledger Unit Seconds...

Page 104: ...e printer within 3 minutes it assesses an initial residual jam c The CPU detects that an initial residual jam has occurred if one of the following sensors detects the presence of paper even after the printer has performed an automatic delivery of the relevant paper After the power switch is turned ON and the fixing roller has reached its prescribed temperature 150 C or the printer outputs the pape...

Page 105: ...This page intentionally left blank CHAPTER 2 2 59 ...

Page 106: ...ng data from the ROM on the video controller and optional ROM DIMM 3 Controls the video interface expansion interface and the standard equipped bi directional parallel interface Centronics specifications c AIR IC10 This ASIC has a built in SRAM which contains a smoothing control circuit The main functions are 1 Controls image smoothing 2 Controls output of the video signal to the DC Controller 3 C...

Page 107: ...Figure 2 6 1 CHAPTER 2 2 61 CPU AIR ASIC J5 J4 J3 J9 J7 J8 J11 J10 J1 J2 J6 EEPROM RAM SIMM 3 RAM SIMM 2 RAM SIMM 1 ROM DIMM 1 ROM DIMM 2 ...

Page 108: ...D ROM DIMM 4MB Buffer Buffer AIR Prarell I F IEEE1284 Option Controler EEPROM Extension I F Hard disk I F CIOA IOD LA LD A7 AD Engine RAM SIMM 4MB MD Buffer Buffer Buffer Buffer Buffer J1 J2 J9 J10 J11 J7 J8 J9 J3 J4 J5 DC DC CONVERTER 3 3V ...

Page 109: ...error occurs Figure 2 6 3 2 Operation The LEDs LCD and buzzer on the control panel are controlled by signals from the video controller All signals generated by control panel switches are input to the video controller Table 2 6 1 lists the input and output signals Table 2 6 1 CHAPTER 2 2 63 nFP CLK J6 C13 J3 3 nFP CS J3 4 J3 5 J3 6 LEDs LCD CPU Switches IC10 Video controller PCB AIR nFP DI nFP SWRD...

Page 110: ...ontroller and serial communication with the paper deck The option controller controls the paper deck according to the various commands and signals sent from the video controller and signals sent from the DC controller Figure 2 7 2 shows a block diagram of option controller Figure 2 7 1 CHAPTER 2 2 64 Printer Video Controller PCB DC Controller PCB Option Controller PCB Paper deck Serial line Paper ...

Page 111: ... b EP ROM IC109 The EP ROM has a memory capacity of 64K bytes and contains the control program for the paper deck s operation c S RAM IC110 The S RAM has a memory capacity of 32K bytes and contains the communication data with the video controller and the paper deck Figure 2 7 2 IC101 CPU IC110 S RAM IC109 EP ROM J102 J101 BUS I O I O Video Controller PCB Option driver PCBs paper deck etc ...

Page 112: ...The option controller sends pick up and delivery command data for each page printed to the paper deck based on data and the vertical synchronized signal VSYNC from the video controller along with paper feed PFED and paper delivery PDLV signals output from the DC controller The paper deck then returns its paper feed status back to the option controller The S RAM IC110 constantly stores the latest 4...

Page 113: ...ntroller of the envelope feeder s status The figure below outlines the flow of signals between the envelope feeder and the printer The envelope feeder is supplied with 24VDC from the printer Figure 2 8 1 CHAPTER 2 2 67 PS931 Envelope feeder paper sensor DC controller PCB printer Multi purpose tray PCB printer Envelope feeder pick up motor Envelope feeder driver PCB Motor driver circuit J932 1 2 3 ...

Page 114: ... process picks up and feeds the envelope into the printer The envelope is stopped when it is 16mm past the registration paper sensor PS1 Following this the envelope feeder driver rotates the motor counter clock wise according to the 2nd start command received for about 1 second to feed the envelope again Figure 2 8 2 CHAPTER 2 2 68 Registration roller Transfer charging roller Photosensitive drum P...

Page 115: ...arrows in middle figure of 2 8 4 through the movement of the envelope which is driven by the lower separation roller Figure 2 8 4 CHAPTER 2 2 69 PRINT signal PRNT VERTICAL SYNC signal VSYNC Main motor MT1 Envelope feeder pick up motor SMT11 Pick up command Registration sensor PS1 Fixing unit delivery sensor PS1403 Unit Seconds Power ON STBY INTR PRINT STBY LSTR About 1 0 2nd Start 1st Start 2nd St...

Page 116: ... in its original direction The upper roller therefore rotates in the opposite direction to the pick up direction shown by white arrows in figure 2 8 4 below Any extra envelopes are returned to the feeder while only one is sent through into the printer C Paper Jam Detection Paper jams are detected in the envelope feeder pick up and feed path in the same fashion as in the main unit refer to pages 2 ...

Page 117: ... pick up commands via serial communication The duplexing unit is supplied with 24VDC from the printer 5V is produced within the duplexing driver PCB for the ICs and sensors The flow of signals between the duplexing unit and the printer are outlined in the figure below Figure 2 9 1 Duplexing driver PCB Switchback roller release solenoid CPU IC2002 Printer Duplexing unit paper sensor Switchback sens...

Page 118: ...hen the sensor detects home position of the side registration guide Side regist ration guide home position sensor PS23 J2006 1 3 2 HRHGS J21 3 1 2 5VB L when the sensor detects pape Switchback sensor PS22 J2007 1 3 2 SWBKS J22 3 1 2 5VB H when the sensor detects home position of theduplex feed roller 1 Duplex feed roller 1 home position sensor PS24 J2007 4 6 5 DRHPS J23 3 1 2 5VB ...

Page 119: ...4 1 When L pressure is relased from the switchback roller Switchback motor control signal J2009 2 24VA Duplex deflector solenoid SL22 DUPSLD 1 When L paper enters the duplexing unit J2002 2 24VA J2003 2 1 Duplex feed cluch DUPCLD L to rotate the duplex feed roller CL21 Side registration motor SMT22 HRGCOMA HRGCOMB HRGAD HRGAND HRGBD HRGBND J2005 1 2 3 4 5 6 Side registration motor control signal ...

Page 120: ...ration guides and re fed into the printer by the duplex feed rollers 1 and 2 The switchback roller is rotated from the drive of the switchback motor SMT21 The duplex feed clutch controls the drive of the switchback motor SMT21 which rotates duplex feed rollers 1 and 2 The switchback motor SMT21 is a stepping motor and can be rotated clock wise or counter clock wise according to signals sent from t...

Page 121: ...PS22 Switchback sensor PS23 Side registration guide home position sensor PS24 Duplex feed roller 1 home position sensor Fixing delivery roller SMT21 Fixing rollers Feed roller 2 SL22 SIDE REGISTRATION MOTOR DRIVE signal SWITCHBACK ROLLER RELEASE SOLENOID DRIVE signal PRRESLD DUPLEX DEFLECTOR SOLENOID DRIVE signal DUPSLD SWITCHBACK PAPER SENSOR signal DUPIDS SIDE REGISTRATION GUIDE HOME POSITION SE...

Page 122: ...T21 forward CW into the standard feeding direction Because the paper is fed along the duplex lower guide it is sent into the duplex feed rollers side of the duplexing unit Note When the size of paper being used is anything other than ledger A3 B4 and legal the distance between pages shortens The CPU therefore drives SMT21 into high speed rotation after a set period of time to feed the paper into t...

Page 123: ...d SL21 releasing pressure from the roller This completes preparation for the side registration adjustment operation The CPU drives the side registration motor SMT22 at its specified pulse rate based on the paper size information received from the DC controller The side registration guides are then moved according to the size of paper being used and registration adjustment note takes place The side...

Page 124: ...tecting the leading edge of the paper at the duplexing unit paper sensor PS21 The CPU then stops the paper at the second pass pick up wait position and waits for second pass pick up command to be input from the printer On receival of these commands the CPU controls the feeding speed of the switchback motor SMT21 according to the paper feed speed of the printer Following this CL21 is turned ON and ...

Page 125: ...ed the duplex feeding process is stopped and the DC controller is notified of the jam Note Times T1 and T2 indicate the smallest and largest paper sizes respectively 1 Switchback unit delay jam When the paper has not reached the switchback paper sensor PS22 in the specified time after the duplexing pick up process has begun the CPU assesses that a switchback unit delay jam has occurred Figure 2 9 ...

Page 126: ...chback paper sensor PS22 in the specified time the CPU assesses that a duplex feed unit delay jam has occurred Figure 2 9 8 Unit Seconds Unit Seconds PRINT Abnormal Normal T1 T1 PRINT Jam check Switchback sensor PS22 Switchback motor SMT21 DUPLEX DEFLECTOR SOLENOID DRIVE signal DUPSLD T1 About 3 7 seconds A4 About 5 8 seconds Ledger Backward Forward Unit Seconds Unit Seconds PRINT Abnormal Normal ...

Page 127: ...ent from the option controller The option controller also controls the other options stapler stacker etc via the paper deck The video controller controls the printer and the various options by controlling the DC controller and the option controller in the printer Figure 2 10 1 CHAPTER 2 2 81 Serial line Video contoroller PCB Option controller PCB Paper deck Printer DC controller PCB Paper deck dri...

Page 128: ... sent by serial communication from the option controller The paper deck driver also notifies the option controller by serial communication of the status of the various sensors and switches The diagram below outlines the flow of signals between the paper deck and the option controller CHAPTER 2 2 82 CPU IC201 Option controller PCB Paper deck driver PCB Power supply Lifter clutch Registration clutch...

Page 129: ...1 2 5V SW31 J120 2 1 J101 10 8 9 J102 1 3 2 J101 7 5 6 J102 4 6 5 J109 9 7 8 J110 1 3 2 J109 3 1 2 J110 4 6 5 J109 3 1 2 J110 7 9 8 J121 1 2 Paper jam sensor Tray paper out sensor Door sensor Paper surface sensor Lifter abnormal position sensing switch Paper level sensing switch Paper size sensing switch Paper size sensing switch PCB Paper level sensing switch PCB Paper deck driver PCB Detects the...

Page 130: ...enoid SL31 FEDBND FEDBD FEDAND FEDAD PICKUPSL J205 1 2 3 4 J117 1 2 3 4 J116 4 3 2 1 J114 2 1 J208 2 2 24V J207 8 7 J102 8 7 Registration clutch REGICL CL32 J101 3 4 24V J207 10 9 J205 1 4 Feed clutch FEEDCL CL33 J101 1 2 J203 1 4 J102 10 9 Arm is lowered when L L when deck motor rotates normally Deck motor is driven when L Pick up motor rotation control signal Lifter rises when L Registration rol...

Page 131: ...eet of paper The paper sent into the feed unit passes through the registration paper sensor PS31 and stops momentarily at the registration roller The registration clutch CL32 is then turned ON and the paper is sent through into the printer The two photointerrupters PS31 PS32 in the feed path detect the paper as it reaches and passes through them If the paper does not reach or pass through the vari...

Page 132: ...1 Lifter clutch CL32 Registration clutch CL33 Feed clutch Option controller PCB Feed roller 2 Serial line signal signal PICKUPSL signal FEEDCL REGICL Registration roller Feed roller 1 Separation roller Pick up roller Lifter Paper deck PAPER DECK DRIVE LIFTER CLUTCH DRIVE PICK UP MOTOR DRIVE PICK UP SOLENOID DRIVE FEED CLUTCH DRIVE REGISTRATION CLUTCH DRIVE signal ...

Page 133: ...602 Paper level sensing switch SW701 Paper size sensing switch SW702 Paper size sensing switch SW703 Paper size sensing switch SW704 Paper size sensing switch Pick up roller Separation roller Feed roller 1 Registration roller Feed roller 2 SW31 Lifter 5V REGISTRATION PAPER SENSING signal REGI PAPER JAM SENSING signal JAM TRAY PAPER OUT SENSING signal PAP EXIST PAPER SURFACE SENSING signal LIFT PAP...

Page 134: ...roller is lowered to the paper surface After any excess pages have been separated by the separation roller one sheet is sent into the feed unit with feed roller 1 The paper reaches the registration roller after passing through the registration paper sensor PS31 As the registration roller is not rotating the paper stops momentarily and the leading edge is looped to straighten out any skew The regis...

Page 135: ...ck up command Deck motor MT31 Pick up motor SMT31 Pick up solenoid SL31 Registration clutch CL32 Feed clutch CL33 Paper jam sensor PS32 PRINT 0 3 About 0 61 About 0 15 About 1 18 About 0 51 Unit Seconds Registration paper sensor PS31 ...

Page 136: ... L the paper deck driver re activates CL31 and raises the lifter until PS34 returns to H If the lifter has not reached PS34 within the designated time after starting to rise the paper deck driver assesses a lifter failure and notifies the option controller When paper is loaded in the tray as shown in Figure 2 10 10 there is a possibility that the wires will break from the excess strain as the pape...

Page 137: ...Figure 2 10 10 CHAPTER 2 2 91 SW31 PS34 PS34 Paper surface sensor SW31 Lifter abnormal position sensing switch ...

Page 138: ... check timing in the memory When the CPU assesses that a jam has occurred the feed operation to the printer is stopped and notification of the jam is sent to the option controller 1 Pick up delay jam If the paper has not reached the registration sensor PS31 in the designated time after receiving the pick up command the CPU assesses a pick up delay jam Figure 2 10 11 CHAPTER 2 2 92 PRINT 1 07 1 07 ...

Page 139: ...m sensor PS32 in the designated time after the registration clutch CL32 is driven the CPU assesses a feed unit stationary jam Figure 2 10 13 CHAPTER 2 2 93 PRINT 1 88 1 88 PRINT Pick up motor SMT31 Paper jam sensor PS32 Unit Seconds Registration clutch CL32 Jam check Normal Abnormal Unit Seconds PRINT T T PRINT Pick up motor SMT31 Paper jam sensor PS32 Unit Seconds Registration clutch CL32 Jam che...

Page 140: ...4 2 Protection System On the various 24V and 5V power supply circuits is an overcurrent protection system which automatically cuts the output voltage protecting the circuits from being damaged in the event that overcurrent should flow due to some form of trouble or from one of the loads shorting Therefore when the overcurrent protection circuit is activated and DC voltage is not being output from ...

Page 141: ...dge with a cloth or put it in a dark place to prevent light from affecting the drum inside the cartridge 2 Remove the cartridge from the printer before disassembling or transporting the printer 3 CAUTION Before servicing the printer disconnect its power cord from the electrical outlet 4 Assembly is the reverse of disassembly unless otherwise specified 5 Note the lengths diameters and locations of ...

Page 142: ......

Page 143: ...unit door Front cover Figure 3 1 1 When cleaning checking or repairing inside the printer remove the necessary covers by following the procedures below 1 Face down tray 1 Open the upper cover 2 Move the lock lever in the direction of the arrow Upper cover Lock lever Figure 3 1 2 3 Close the upper cover and remove the face down tray Face down tray Figure 3 1 3 CHAPTER 3 3 1 ...

Page 144: ... Remove the 3 screws Duplexing unit door Screws Figure 3 1 4 4 Open the delivery cover unit and unclip the claw Claw Figure 3 1 5 5 Open the pick up unit door and disconnect the claw and remove the front cover Pick up unit door Claw Front cover Figure 3 1 6 CHAPTER 3 3 2 ...

Page 145: ...the 2 claws and then the operation panel unit 4 Disconnect the connector from the operation panel unit Claws Operation panel unit Figure 3 1 7 5 Remove the 2 screws Screws Figure 3 1 8 6 Remove the screw and then the upper cover unit Screw Upper cover unit Figure 3 1 9 CHAPTER 3 3 3 ...

Page 146: ...Figure 3 1 10 4 Remove the 6 screws and take off the rear cover Screws Rear cover Figure 3 1 11 5 Delivery cover unit 1 Open the delivery cover unit 2 Remove the 2 rods holding the delivery cover unit to the printer 3 Slightly lift the delivery cover unit pull out the right side first then the left Rods Delivery cover unit Figure 3 1 12 CHAPTER 3 3 4 ...

Page 147: ... toward you Stoppers Claws Multi purpose tray Figure 3 1 13 7 Right cover unit 1 Remove the front cover 2 Remove the right rear cover 3 Remove the hinge from the right cover unit and then the 4 screws Right cover unit Hinge Screws Figure 3 1 14 4 Remove the cassettes 5 Remove the 2 claws and then the right cover unit Claws Figure 3 1 15 CHAPTER 3 3 5 ...

Page 148: ... 4 fan motors installed to circulate air within the printer and prevent the internal temperature from rising Fixing unit scanner unit fan FM1 Blows air from the fixing unit and the scanner unit vicinity Power supply fan FM2 Blows air from the power supply Electrical unit fan FM3 Intake fan for the video controller unit Fixing unit fan FM4 Blows air from the fixing unit vicinity Figure 3 1 17 CHAPT...

Page 149: ...nect the connector 5 Remove the cable tie and then remove the cable from the cable guide Connector Cable tie Cable Cable guide Figure 3 1 19 6 Remove the cable from the guide 7 Unhook the claw then remove the fan duct Cables Cable guide Claw Fan duct Figure 3 1 20 8 Remove the 2 screws and then the fixing unit scanner unit fan Screws Fixing unit scanner unit fan Figure 3 1 21 CHAPTER 3 3 7 ...

Page 150: ...2 screws and then the power supply fan Screws Power supply fan Figure 3 1 23 c Electrical unit fan FM3 1 Remove the right rear and rear covers 2 Remove the left rear cover 3 Undo the connector 4 Pinch the 2 claws holding the electrical unit fan and pull out the fan Connector Claws Electrical unit fan Figure 3 1 24 CHAPTER 3 3 8 ...

Page 151: ...Connector Screw Fan grounding plate Fixing unit fan Figure 3 1 25 C Operation Panel Unit 1 Removal from the printer 1 Open the upper cover unit 2 Remove the front cover 3 Remove the 2 claws and then the operation panel unit Claws Operation panel unit Figure 3 1 26 4 Remove the connector and then the operation panel unit Connector Operation panel unit Figure 3 1 27 CHAPTER 3 3 9 ...

Page 152: ...sette stay Screw Cassette stay Figure 3 2 1 3 Disconnect the claw and then the clutch cover Claw Clutch cover Figure 3 2 2 4 Remove the high voltage power supply unit following steps 1 2 on Page 3 36 5 Undo the connector remove the 4 screws and then the main motor 6 Remove the 2 screws and the drive unit Screws Drive unit Figure 3 2 3 CHAPTER 3 3 10 ...

Page 153: ...oval from the printer 1 Remove the high voltage power supply unit following steps 1 2 on Page 3 36 2 Undo the connector remove the 4 screws and then the main motor Connector Screws Main motor Figure 3 2 4 CHAPTER 3 3 11 ...

Page 154: ... up unit Cable Cable guide Screws Pick up unit Figure 3 3 2 Note 1 While replacing parts in the pick up unit to prevent grease from getting on the pick up feed and separation rollers be sure to remove them before working on the unit Take care not to get grease on the paper feed guide 2 Be sure to grease the gears shown in figure 3 3 3 when exchanging to prevent noise The type of grease do not use ...

Page 155: ...Figure 3 3 3 57T gear Upper lift up cam Pick up cam 100T gear Lower lift up cam 31T 47T gear 20T 41T gear CHAPTER 3 3 13 1 2 3 4 5 6 7 ...

Page 156: ...rews Pick up motor Figure 3 3 4 b Feed clutch 1 Disconnect the connector 2 Remove the screw and disconnect the 2 claws to remove the pick up PCB Connector Screws Claws Pick up PCB Figure 3 3 5 3 Undo the claw and remove the clutch fixing plate 4 Remove the E ring and then the feed clutch Claw Clutch fixing plate E ring Feed clutch Figure 3 3 6 CHAPTER 3 3 14 ...

Page 157: ...moval from the printer 1 Remove the upper cover unit 2 Remove the front cover 3 Remove the right rear and rear covers 4 Open the delivery cover unit 5 Remove the left rear cover 6 Disconnect the connector and remove the 3 screws Screws Connector Figure 3 3 8 7 Remove the 2 screws 8 Slightly lift the delivery unit up then pull it out toward you Screws Delivery unit Figure 3 3 9 CHAPTER 3 3 15 ...

Page 158: ... Remove the 4 screws and take out the registration roller unit Connector Screws Registration roller unit Figure 3 3 11 2 Disassembly reassembly a Registration clutch 1 Remove the E ring and the registration clutch E ring Registration clutch Figure 3 3 12 b Registration lower roller 1 Remove the registration clutch 2 Remove the spring the E ring and the bushing Spring E ring Bushing Figure 3 3 13 C...

Page 159: ...p Unit 1 Removal from the printer 1 Remove the front cover 2 Remove the rear cover 3 Remove the multi purpose tray 4 Open the pick up unit door 5 Disconnect the connector and then remove the cable from the cable guide Connector Cable guide Cable Figure 3 3 15 6 Remove the 4 screws and then the manual feed pick up unit Screws Manual feed pick up unit Figure 3 3 16 CHAPTER 3 3 17 ...

Page 160: ...Connector E ring Bushing Screws Drive side plate Manual feed pick up clutch Figure 3 3 17 b Lifting plate solenoid 1 Perform steps 1 3 on Page 3 19 to remove the manual feeding pick up roller 2 Remove the E ring and the bushing E ring Bushing Figure 3 3 18 3 Disconnect the connector 4 Remove the 2 screws and then the manual feed drive unit Connector Screws Manual feed drive unit Figure 3 3 19 CHAP...

Page 161: ...E Manual Feeding Pick up Roller 1 Removal from the printer 1 Open the multi purpose tray 2 Remove the cover Cover Figure 3 3 21 3 While pressing the lifting plate grasp the manual feeding pick up roller knob and pull out the roller Lifting plate Manual feeding pick up roller Figure 3 3 22 CHAPTER 3 3 19 ...

Page 162: ...tion pad Figure 3 3 23 G Pick up Feed Separation Rollers 1 Removal from the printer 1 Pull out the upper and lower cassettes 2 Grasp the knobs of each roller and pull the rollers out of the printer Pick up roller Feed roller Separation roller Figure 3 3 24 Pick up roller Feed roller Separation roller Figure 3 3 25 Note Be sure to replace the feed roller and the separation roller together CHAPTER 3...

Page 163: ... figure Scanner unit BD PCB Laser unit Figure 3 4 1 2 Removal from the printer 1 Remove the upper cover unit 2 Disconnect the 3 connectors and the cable from the laser scanner unit Connectors Cable Figure 3 4 2 3 Remove the 4 screws and the laser scanner unit Screws Laser scanner unit Figure 3 4 3 Note Do not disassemble the laser scan ner unit as it cannot be adjusted in the field CHAPTER 3 3 21 ...

Page 164: ...e print process The EP W cartridge has been designed in such a way that it cannot be disassembled Primary charging roller Developing unit Protective shield Photosensitive drum Drum cleaning unit Figure 3 5 1 a Drum Protective Shutter Since blank spots and black lines can appear on prints as a result of strong light striking the photosensitive drum it is covered by a protective shutter Do not carel...

Page 165: ...as it will scratch the drum Do not use solvents when cleaning 3 Clean the drum quickly as lengthy exposure to light can have adverse effects on print images B Transfer Charging Roller 1 Removal from the printer 1 Open the upper cover 2 Open the transfer charging roller guide 3 Pinch the gear lift it slightly and slide it to the left Remove the transfer charging roller Transfer charging roller guid...

Page 166: ... Envelope lever Figure 3 6 1 2 Removal from the printer 1 Open the delivery cover unit 2 Move the 2 fastening levers of the fixing unit in the direction of the arrow slightly lift the fixing unit and pull it out toward you Fixing unit fastening levers Fixing unit Figure 3 6 2 Note When replacing the fixing unit be sure to confirm the location of the fixing unit envelope lever before replacement an...

Page 167: ...er Claws Wire cover Figure 3 6 4 2 Remove the 2 screws and the fixing unit lead wire Screws Lead wire Figure 3 6 5 3 Take out the 2 connectors 4 Disconnect the heater claw of the holder and remove the holder Then gently pull out the fixing heater from the fixing upper roller Connectors Claw Heater holder Fixing heater Figure 3 6 6 CHAPTER 3 3 25 ...

Page 168: ...he connector and remove the cable from the fixing left cover Connector Figure 3 6 8 3 Remove the screw and the thermistor Screw Thermistor Figure 3 6 9 Note on reassembly When installing the thermistor ensure that its detection surface is uniformly contacting the fixing upper roller surface If it is not making an uniform contact check that the plate spring has not deformed CHAPTER 3 3 26 ...

Page 169: ...Screws Separation lower guide Separation upper guide Figure 3 6 10 4 Remove the E ring and the spring then pull out the separation lower guide toward you and slide it off in the direction of the arrow E ring Spring Separation lower guide Figure 3 6 11 5 Remove the fixing roller heater following steps 1 4 on Page 3 25 6 Remove the thermoswitch following steps 2 on Page 3 26 7 Remove the thermistor ...

Page 170: ...ht fixing cover Figure 3 6 12 10 Remove the 3 screws and the left fixing cover 11 Remove the 4 gears Screws Left fixing cover Figure 3 6 13 12 Remove the 2 screws the grounding plate and the thermoswitch stay Screw Grounding plate Thermoswitch stay Figure 3 6 14 CHAPTER 3 3 28 ...

Page 171: ...f the fixing roller cover Screw Claw Fixing roller cover Figure 3 6 15 14 Remove the grounding ring Grounding ring Figure 3 6 16 15 Remove the C ring from the gear C ring gear Figure 3 6 17 16 Removing the bushing Bushing Figure 3 6 18 CHAPTER 3 3 29 ...

Page 172: ...upper roller Figure 3 6 19 e Fixing lower roller 1 Remove the fixing upper roller following steps 1 18 from Page 3 27 2 Disconnect the claw and remove the fixing entrance guide Claw Fixing entrance guide Figure 3 6 20 3 Remove the 2 screws and the 2 separation guides Screws Separation guides Figure 3 6 21 CHAPTER 3 3 30 ...

Page 173: ...4 Remove the fixing lower roller with its holder 5 Remove the 2 holders and 2 bushings from the fixing lower roller Holders Bushings Fixing lower roller Figure 3 6 22 CHAPTER 3 3 31 ...

Page 174: ...hen guide 4 Remove the 2 screws M4 and the 4 screws M3 then take out the video controller PCB Screws M3 Guide Screws M4 Screws M3 Video controller PCB Figure 3 7 3 Notes 1 When replacing the video controller PCB be sure to remove the EEPROM from the old board and reinstall it onto the new board 2 If you removed ROM DIMM or RAM SIMM when you repaced the video controller PCB reinstall it on the new ...

Page 175: ... the direction of the arrow Connector Screws Hard disk Figure 3 7 4 C DC Controller PCB 1 Remove the high voltage power supply unit following steps 1 2 on Page 3 36 2 Disconnect the 18 connectors from the DC controller PCB 3 Remove the 4 screws and the mount retainer then take out the DC controller PCB Connectors Screws Mount retainer DC controller PCB Figure 3 7 5 CHAPTER 3 3 33 ...

Page 176: ...s Screw Claw Pick up PCB Figure 3 7 6 E Multi purpose Tray PCB 1 Remove the manual feed pick up unit following steps 1 6 on Page 3 17 2 Remove the manual feed drive unit following steps 1 4 on Page 3 18 3 Disconnect the connector 4 Remove the screw and disconnect the claw Then take out the multi purpose tray PCB Connector Screw Claw Multi purpose tray PCB Figure 3 7 7 CHAPTER 3 3 34 ...

Page 177: ...ws Connector Screws Fan duct Screws Figure 3 7 8 6 Remove the 3 screws and the shield cover Screws Shield cover Figure 3 7 9 7 Remove the 5 screws and the shield plate Screws Shield plate Figure 3 7 10 8 Remove the DC controller PCB following steps 1 3 on Page 3 33 9 Remove the 3 screws and take out the DC controller mounting plate Screws DC controller mounting plate Figure 3 7 11 CHAPTER 3 3 35 ...

Page 178: ...s Switch sensor PCB Figure 3 7 12 G High voltage Power Supply PCB 1 Remove the right rear and rear covers 2 Disconnect the 2 connectors remove the 4 screws then take out the high voltage power supply unit Connectors Screws High voltage power supply unit Figure 3 7 13 3 Disconnect the 2 claws and remove the high voltage power supply PCB CHAPTER 3 3 36 ...

Page 179: ... Disconnect the connector from each PCB remove the 3 screws then take out the cassette size sensing PCBs Connectors Screws Upper cassette size sensing PCB Lower cassette size sensing PCB Figure 3 7 15 I Power Supply 1 Remove the left rear and rear covers 2 Disconnect the connector remove the 2 screws then take out the fan duct Connector Screws Fan duct Figure 3 7 16 3 Remove the connector 4 Take o...

Page 180: ...connectors Connectors Figure 3 7 18 6 Remove the 2 screws and the power supply unit fan 7 Remove the 2 screws and take off the power supply unit Screws Power supply fan Screws Power supply Figure 3 7 19 CHAPTER 3 3 38 ...

Page 181: ...check on the envelope feeder while the rear cover is off be sure to either hold the bottom of the PCB with your hand or tape it to the frame b Front Cover 1 Remove the screw and take off the front cover Screw Front cover Figure 3 8 2 c Lower Cover 1 Remove the rear and front covers 2 Remove the two screws and dislodge the lower cover Screws Lower cover Figure 3 8 3 CHAPTER 3 3 39 ...

Page 182: ...gure 3 8 5 Notes 1 Ensure that the separation guide and upper cover are removed as one unit However in the event that the separation guide has already been removed be sure to follow the position adjustment directions refer to page 4 10 when re installing 2 Check that the separation roller pressure spring is correctly installed when reassembling Separation roller pressure spring Figure 3 8 6 CHAPTE...

Page 183: ...e the 6 screws and take out the guides from underneath Screws Figure 3 8 8 3 Removal of the Envelope Feeder Pick up Motor 1 Remove the rear front lower and upper covers 2 Remove the envelope side guides as shown in steps 1 and 2 of this page 3 Remove the C ring the gear and the rack C ring Gear Rack Figure 3 8 9 4 Remove the connector Connector Figure 3 8 10 CHAPTER 3 3 41 ...

Page 184: ...ing the guides apart 4 Removal of the Envelope Feeder Driver PCB 1 Remove the rear front lower and upper covers 2 Remove the envelope guides 3 Remove the 2 connectors and the screw Connectors Screw Figure 3 8 12 4 After removing the sensor lever take out the envelope feeder driver PCB Sensor lever Envelope feeder driver PCB Figure 3 8 13 CHAPTER 3 3 42 ...

Page 185: ...e 3 screws E rings Screws Drive unit Figure 3 8 15 6 Removal of the Envelope Feeder Pick up Roller 1 Follow steps 1 to 5 on page 3 40 and remove the pick up motor 2 Remove the drive unit 3 Remove the 2 bushings and 2 screws then take out the pick up roller shaft Bushings Gear Pick up roller Figure 3 8 16 4 Remove the 2 E rings and 2 bushings then take out the pick up roller shaft CHAPTER 3 3 43 ...

Page 186: ...e the 2 E rings and 2 bushings then take out the separation lower roller shaft Remove the separation lower roller from the shaft E rings Bushings Separation lower roller Figure 3 8 17 4 Remove the separation lower shaft from the guide Then take the separation upper roller and torque limiter off the shaft Guide Separation upper roller Torque limiter Figure 3 8 18 CHAPTER 3 3 44 ...

Page 187: ... the upper guide ensure that the guide is on the outside Upper guide Guide Figure 3 9 2 2 Removal of the Lower Guide 1 Remove the upper cover 2 Remove the connector 3 Take out the 2 screws then the guide Connector Screws Guide Figure 3 9 3 4 Remove the 2 springs then the switch back guide Springs Switch back guide Figure 3 9 4 CHAPTER 3 3 45 ...

Page 188: ...hen the lower guide Screws Lower guide Figure 3 9 6 3 Removal of the Switchback Roller Release Solenoid 1 Remove the lower guide 2 Take out the 2 screws then the PCB cover Screws PCB cover Figure 3 9 7 3 Remove the connector Connector Figure 3 9 8 CHAPTER 3 3 46 ...

Page 189: ...off the solenoid Cable guide Switch back roller release solenoid Figure 3 9 9 4 Removal of the Duplex Deflector Drive Solenoid 1 Remove the upper guide 2 Remove the PCB cover and the 4 connectors Connectors Figure 3 9 10 3 Remove the connector 4 Remove the cable from the guide Connector Cable Cable guide Figure 3 9 11 CHAPTER 3 3 47 ...

Page 190: ...rews Motor base plate Figure 3 9 12 6 Remove the screw and take off the solenoid cover Screw Solenoid cover Figure 3 9 13 7 Remove the 2 screws and take off the duplex deflector drive solenoid Screws Duplex deflector drive solenoid Figure 3 9 14 CHAPTER 3 3 48 ...

Page 191: ...nd remove the connector Connector Figure 3 9 15 3 Remove the 2 screws and then the motor base plate Screws Motor base plate Figure 3 9 16 4 Take out the 2 screws then slide the switch back motor in the direction of the arrow to remove Screws Switch back motor Figure 3 9 17 CHAPTER 3 3 49 ...

Page 192: ...ws and slide the side registration motor in the direction of the arrow to remove Cable guides Cable Screws Side registration motor Figure 3 9 19 7 Removal of the Duplex Feed Clutch 1 Remove the upper guide 2 Take off the PCB cover and undo the connector Connector Figure 3 9 20 3 Remove the C ring and take out the duplex feed clutch C ring Duplex feed clutch Figure 3 9 21 CHAPTER 3 3 50 ...

Page 193: ...lexing Driver PCB 1 Take off the PCB cover and remove the 9 connectors Connectors Figure 3 9 22 2 Undo the 2 claws holding the PCB and remove the duplexing driver PCB Claws Duplexing driver PCB Figure 3 9 23 CHAPTER 3 3 51 ...

Page 194: ... all the interface cables 3 Loosen the 2 screws and pull out the video controller PCB unit Screws Video controller PCB unit Figure 3 10 1 4 Remove the connector 5 Remove the 3 screws and the option controller PCB Connector Screws Option controller PCB Figure 3 10 2 CHAPTER 3 3 52 ...

Page 195: ... cover Figure 3 11 1 2 Left cover 1 Remove the two screws 2 Remove the claw and take off the left cover Screws Claw Left cover Figure 3 11 2 3 Right cover 1 Remove the 2 screws 2 Undo the claws and remove the right cover Screws Claws Right cover Figure 3 11 3 4 Feed cover 1 Remove the 4 screws 2 Undo the 7 claws and remove the feed cover Screws Claws Feed cover Figure 3 11 4 CHAPTER 3 3 53 ...

Page 196: ...over Screws Rear cover Figure 3 11 5 B Drive Unit 1 Removal from the main unit 1 Remove the right and rear covers 2 Pull out the tray 3 Remove the 2 connectors and 4 screws then take out the drive unit Connectors Screws Drive unit Figure 3 11 6 CHAPTER 3 3 54 ...

Page 197: ... main unit 1 Remove the 4 screws and take out the deck motor Screws Deck motor Figure 3 11 8 C Limit Switch 1 Removal from the main unit 1 Remove the 2 screws then take off the upper cover Screws Upper cover Figure 3 11 9 2 Pull out the tray 3 Remove the rear cover 4 Remove the connector 5 Take out the screw and slide the stay in direction of the arrow to remove Connector Screw Stay Figure 3 11 10...

Page 198: ...Cable bands Cable Screw Limit switch Figure 3 11 11 D Pick up Unit 1 Removal from the main unit 1 Remove the feed unit by following steps 1 to 3 on page 3 58 2 Pull out the tray 3 Remove the right and rear covers 4 Remove the 4 connectors then take the cable out of the bands Connectors Cable bands Cable Figure 3 11 12 CHAPTER 3 3 56 ...

Page 199: ...aration rollers so not to get grease on them Be careful also not to get grease on the paper feed guide 2 Disassembly reassembly a Pick up solenoid 1 Undo the 2 claws and remove the gear cover 2 Remove the connector Claws Gear cover Connector Figure 3 11 14 3 Remove the 5 screws 4 Remove the gear side plate with the gear Screws Gear side plate Gear Figure 3 11 15 CHAPTER 3 3 57 ...

Page 200: ...ck up motor 1 Remove the gear side plate by following steps 1 to 4 on this page 2 Remove the gear 3 Remove the 3 screws and take out the motor base plate Gear Screws Motor base plate Figure 3 11 17 4 Remove the 2 screws and then the pick up motor Screws Pick up motor Figure 3 11 18 CHAPTER 3 3 58 ...

Page 201: ...eed unit Connector Feed spacer Screws Figure 3 11 19 2 Disassembly reassembly a Feed clutch 1 Remove the feed cover 2 Remove the cable from the band Cable bands Cable Figure 3 11 20 3 Remove the 3 screws and then the connecting plate 4 Remove the 3 screws and then the gear side plate Screws Connecting plate Screws Gear side plate Figure 3 11 21 CHAPTER 3 3 59 ...

Page 202: ...utch Connector Bushings Shaft Gear Figure 3 11 22 b Registration clutch 1 Remove the gear side plate by following steps 1 to 4 on page 3 56 2 Remove the connector 3 Remove the E ring and then the registration clutch Connector E ring Registration clutch Figure 3 11 23 CHAPTER 3 3 60 ...

Page 203: ... bushing then the feed roller E ring Bushing Feed roller Figure 3 11 25 d Registration roller 1 Remove the registration clutch by following steps 1 to 3 on page 3 59 2 Remove the 2 E rings and the bushing E rings Bushing Figure 3 11 26 3 Remove the E ring gear pin and bushing then the registration rollers E ring Gear Bushing Registration rollers Figure 3 11 27 CHAPTER 3 3 61 ...

Page 204: ... Stopper Figure 3 11 28 4 Remove the screw and stopper then take out the tray Screw Stopper Tray Figure 3 11 29 2 Disassembly a Lifter 1 Remove the 2 screws the damper then the gear Screws Damper Figure 3 11 30 2 Remove the E ring then the two pulleys 3 Remove the wires from the pulleys E ring Pulleys Wires Figure 3 11 31 CHAPTER 3 3 62 ...

Page 205: ...the screw then the wire cover Screw Wire cover Figure 3 11 33 6 Remove the screw then the wire cover Screw Wire cover Figure 3 11 34 7 Remove the E ring the rubber ring then the gear 8 Remove the spring pin and spring stop E ring Rubber ring Gear Spring Spring stop Figure 3 11 35 CHAPTER 3 3 63 ...

Page 206: ...re Figure 3 11 36 11 Remove the 3 screws then the reference plate Screws Reference plate Figure 3 11 37 12 Remove the 2 screws and the wire cover Screws Wire cover Figure 3 11 38 13 Remove the screw and the wire cover then take out the tray Screw Wire cover Tray Figure 3 11 39 CHAPTER 3 3 64 ...

Page 207: ...14 Remove the 2 screws from the tray then remove either the front or rear wire units Screws Front wire unit Figure 3 11 40 Screws Rear wire unit Figure 3 11 41 CHAPTER 3 3 65 ...

Page 208: ...times starting from the second groove from the front of pulley 1 and insert it on to the shaft 3 Wind the wire one and a half times starting from the second groove from the back of pulley 2 and insert it on to the shaft 4 Secure the pulleys with the E ring Shaft Pulley alignment pin Wires Pulley 1 Pulley 2 E ring Figure 3 11 42 CHAPTER 3 3 66 ...

Page 209: ...starting from the second groove from the front of pulley 2 and insert it on to the shaft 3 Wind the wire one and a half times starting from the second groove from the back of pulley 1 and insert it on to the shaft 4 Secure the pulleys with the E ring Shaft Pulley alignment pin Wires Pulley 2 Pulley 1 E ring Figure 3 11 43 CHAPTER 3 3 67 ...

Page 210: ...and the 2 PCB holding pins take out the paper deck driver PCB Connectors Screws Holding pins Paper deck driver PCB Figure 3 11 44 H Power Supply 1 Removal from the main unit 1 Take off the rear cover 2 Remove the connector and 2 screws then take out the power supply by slightly lifting its left side Connector Screws Power supply Figure 3 11 45 CHAPTER 3 3 68 ...

Page 211: ...nnector Screw PCB base plate Claws Paper size sensing switch PCB Connector Figure 3 11 46 J Paper level Sensing Switch PCB 1 Removal from the main unit 1 Remove the rear cover 2 Pull out the tray 3 Remove the screw and then the PCB base plate 4 Undo the 3 claws then remove the paper level sensing switch PCB followed by the connector Screw PCB base plate Claws Paper level sensing switch PCB Connect...

Page 212: ...CHAPTER 3 3 70 ...

Page 213: ...ADJUSTMENT 4 14 IV INITIAL CHECK 4 18 V IMAGE DEFECTS 4 19 VI MALFUNCTION TROUBLESHOOTING 4 28 VII PAPER FEEDING TROUBLESHOOTING 4 47 VIII LOCATION OF ELECTRICAL PARTS FUNCTION 4 54 IX VARIABLE RESISTORS LEDS TEST PINS JUMPERS AND SWITCHES ON PC BOARDS 4 69 X LIST OF LUBRICANTS CLEANERS 4 78 ...

Page 214: ......

Page 215: ...C Periodic Servicing Schedule None Part No Remarks 1 2 3 4 5 6 7 8 Manual feeding pick up roller Separation pad Fixing unit Transfer charging roller Feed roller and separation roller Power supply fan and fixing unit scanner fan Electrical unit fan Fixing unit fan No Part name RB1 6730 000 RF5 1455 000 RG5 1863 200 RG5 1871 190 RF5 1412 000 RF5 1834 000 RH7 1266 000 RH7 1271 000 RH7 1289 000 Replac...

Page 216: ...r parts and MEK methyl ethyl ketone for other parts Avoid skew or paper jams caused by removal of the springs e Transfer guide unit Clean with soft dry flannel cloth f Transfer charging roller Clean only when badly contaminated Never use water or solvent Do not touch the roller or allow any solvent or oil to deposit on the surface For details see Chapter 3 g Static charge eliminator Clean with bru...

Page 217: ... 2 Photosensitive drum 3 Transfer guide 4 Registration roller unit 5 Separation pad 6 Manual feeding pick up roller 7 Feed roller 8 Separation roller 9 Pick up roller 10 Transfer charging roller 11 Static charge eliminator 12 Feed guide 13 Fixing entry guide 14 Fixing separation guide ...

Page 218: ...up roller separation roller and feed roller Clean with lint free paper either dry or moistened with ethyl isopropyl alcohol Replace if badly worn Figure 4 1 2 1 Pick up roller 2 Feed roller 3 Separation roller CHAPTER 4 4 4 1 2 3 ...

Page 219: ...Mallet plastic head Brush Penlight Plastic bottle Solder Desoldering wick Lint free paper Soldering iron Oiler Plastic jar Digital multimeter No TKN 0001 TKN 0069 CK 0057 CK 0058 CK 0101 CK 0104 CK 0105 CK 0106 CK 0111 CK 0114 CK 0151 CK 0161 CK 0170 CK 0201 CK 0202 CK 0203 CK 0205 CK 0218 CK 0302 CK 0303 CK 0309 CK 0314 CK 0315 CK 0327 CK 0328 CK 0329 CK 0330 CK 0336 CK 0348 CK 0349 CK 0351 FY9 2...

Page 220: ...for PCB and unit repairs Application remarks 1 tester No RY9 0104 operations Shape 1 0 0 5 ration guide of the optional envelope feeder RY9 0088 2 3 QY9 0001 RANK B A A DAT A DAT A SET bit 16 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 DC2 4V bit 2 1 0 bit 3 1 0 bit 4 1 0 bit 5 1 0 bit 6 1 0 bit 7 1 0 bit 8 1 0 ENT ER TES T PRINT MOD E SEL ECT O ...

Page 221: ...t of a printer failure the error information sent from the printer to the video controller external device can be displayed on the tester LED Note This manual covers the basic operation of the printer driver tester For a move defailed explanation please refer to the operation manual attached to the tester CHAPTER 4 4 7 DATA DATA SET bit 16 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 bit ...

Page 222: ...ay the status of the various sensors and loads sent from the printer with the DATA LED SET UP Mode to set data with the DATA SET switch DATA SET switch Sets the various data sent from the printer See DATA SET in table 4 2 3 ENTER switch Inputs data set by the DATA SET switch CHAPTER 4 4 8 DATA DATA SET bit 16 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 bit 7 bit 6 bit 5 bit 4 bit 3 bit 2...

Page 223: ...ttern setting DISPLAY 1 2 3 4 5 6 7 8 9 10 11 DISPLAY SET UP displays the status of the sensors and loads sent from the printer SET UP sets up various data sent from the printer Paper transport system electrical parts drive 1 Paper transport system electrical parts drive 3 Paper transport system electrical parts drive 2 Paper transportsystem electrical parts status unit pick up unit paper out J1 1...

Page 224: ...r J212 on the DC controller PCB 4 Attach the clip to a metallic part of the printer 5 Turn the printer power ON after installing the envelope feeder in the printer 6 When the printer has entered standby mode use the tester to check operations Figure 4 2 4 DATA DATA SET bit 16 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8 bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 DC24V bit 2 1 0 bit 3 1 0 b...

Page 225: ...4 4 11 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 Fixing unit malfunction BD malfunction Laser malfunction Main motor malfunction Scanner motor malfunction Fan motor malfunction Lifting plate malfunction Misprint Cartridge out Paper out Door open Jam Printer ready S E T U P bit D I S P L A Y Side registration guide malfunction Display Content Details Set Up Content Details Mode select ...

Page 226: ...t 3 to 1 bit2 to 0 and bit 1 to 1 see Table 4 2 6 4 Press the ENTER switch 5 By turning the TEST PRINT switch ON once a test print can be made Figure 4 2 6 Notes 1 After setting a test print in this mode the data will remain the same even if the test print is set in another mode 2 By keeping the TEST PRINT switch ON continuous test prints will be made 3 When setting the image pattern to All black ...

Page 227: ...pick up Envelope feeder pick up Face down tray delivery Face up tray delivery Single side print Duplex print Vertical lines Horizontal lines All white All black bit 8 0 0 0 0 bit 7 0 0 1 1 bit 6 0 1 0 1 bit 5 0 0 bit 4 0 1 bit 3 0 1 bit 2 0 0 1 1 bit 1 0 1 0 1 Print mode Pick up slot Delivery slot Image pattern bit Mode select 8 16 2 1 8 7 6 5 4 3 2 1 Lights when the upper cassette pick up functio...

Page 228: ...10 seconds then switch the printer ON again Deliver the paper from the printer 5 Measure the width of the glossy band across the paper and check that it meets the requirements as shown in Figure 4 3 1 Center a 4 8 1 2 mm Right and left sides b 5 3 1 2 mm Figure 4 3 1 2 Installing the separation guide of the envelope feeder Adjusting the gap between the separation guide and the lower separation rol...

Page 229: ...the printer driver tester print several pages of all black or horizontal line test prints 2 Measure the distance a between the left edge of the page to the edge of the printed pattern see figure 4 3 3 Measure several test prints to find the average distance 3 Move the side registration adjustment lever so that the distance measured in step 2 is 3 0mm one notch alters length a by 0 5mm For example ...

Page 230: ...step 2 above If the margin needs further adjustment repeat steps 1 to 3 again Figure 4 3 3 a for each notch moved for each notch moved The value of a drops by 0 5mm The value of a rises by 0 5mm Leading edge of paper ...

Page 231: ...CHAPTER 4 4 17 B Electrical Adjustment The printer does not require electrical adjustment in the field ...

Page 232: ... output image there is a chance that the toner is not even Rock the toner cartridge as shown in Chap 1 and make a print to check that it has evened out 4 Other During winter particularly when moving the printer into a warm room from a cold location such as a warehouse various problems can occur due to condensation in the printer if immediately unpacked For example a Condensation in the optical sys...

Page 233: ...ade by using the printer driver checker which can make all four test patterns vertical lines horizontal lines solid black and solid white or the test print switch located on the right side of the printer see Figure 1 4 1 One print of test pattern can be made by pressing the switch once when the power is turned ON and the READY appears on the display If the switch is held down test prints are made ...

Page 234: ... PORTRAIT FORM 60LINES FNTSRC INTERNAL FONTNUM 0 PT SIZE 12 00 PITCH 10 00 SYMSET ROMAN 8 FEED UPPER OUTPUT TOP OUTPUT BIN TRAY SWITCH ON MANUAL OFF MPTSIZE A4 DUPLEX OFF BINDING LONG JAMRECOVERY OFF AUTOCONT ON DENSITY 7 PWRSAV 30MIN ECONOMYMODE OFF REFINE ON FORMAT THE DISK PCLSAVE OFF PS2SAVE OFF PERSONALITY AUTO BIDIRECTION ON I OTIME OUT 15 PERSONALITY AUTO I OTIMEOUT 15 SHOW PAGE COUNT TEST ...

Page 235: ... distortion I 15 Sharp black horizontal lines BD error BD failure I 10 Blank spots I 5 Dots vertically in a line I 6 Dirt on back of paper I 7 Vertical streaks lines I 1 Light I 2 Dark I 3 Completely blank I 4 All black I 9 Dirty I 11 White vertical lines I 12 White horizontal lines I 8 Smudged horizontal bands ...

Page 236: ...rty clean them If the problem continues after cleaning or parts are deformed or damaged replace them 6 The transfer charging roller is deformed or has deteriorated Action Replace the roller 7 The high voltage power supply PCB is defective Action Replace the high voltage power supply PCB 8 The DC controller PCB is defective Action Replace the DC controller PCB I 2 Dark Possible causes 1 The image d...

Page 237: ...e deformed or damaged replace them 4 The high voltage power supply PCB is defective Action Replace the high voltage power supply PCB 5 The DC controller PCB is defective Action Replace the DC controller PCB I 4 All black Possible causes 1 The primary changing roller bias contact of the high voltage power supply is not making a good connection with the cartridge contact Action If the contacts are d...

Page 238: ...irty rollers as shown in Table 4 5 1 on page 4 27 If they cannot be cleaned replace them 2 The transfer guide or fixing entry guide is dirty Action Clean dirty parts I 7 Vertical streaks lines Possible causes 1 The photosensitive drum is damaged peripherally Action Replace the cartridge 2 The fixing entry guide is dirty Action Clean the fixing entry guide 3 The fixing upper roller is scratched Act...

Page 239: ... causes 1 Lack of toner Action Take out the cartridge rock it as shown in Chapter 1 to distribute the toner evenly then reinstall it If the problem continues replace the cartridge 2 The photosensitive drum is scratched Action Replace the cartridge 3 Foreign matter is on the laser outlet of the printer or the laser inlet of the cartridge Action Remove the foreign matter 4 The fixing entry guide is ...

Page 240: ...place the fixing unit 5 The thermistor has deteriorated Action Replace the thermistor I 14 Distortion Possible causes 1 Connectors on the DC controller PCB are loose Action Reconnect the J202 J206 and J207 connectors properly 2 The laser scanner unit connectors are loose Action Reconnect J1001 J1 and J6 3 The laser scanner unit is faulty Action Replace the laser scanner unit 4 The DC controller PC...

Page 241: ...Feed roller Separation roller Photosensitive drum Developing cylinder Primary charging roller Period on image mm Blank spot Dirt on back of paper 17 9 40 30 24 24 24 30 20 14 Poor fixing Problem location About 56 About 126 About 94 About 75 About 75 About 75 About 93 About 75 About 44 Periods of appearance of dirt blank spots on images ...

Page 242: ...cautions should be taken when measuring the voltage at a specified terminal of a connector check that the connector is not causing a faulty connection before handling PCBs be sure to touch a metal part of the printer to discharge static energy as it can cause damage to the PCBs the laser scanner unit cannot be adjusted in the field so do not attempt to disassemble it Prepare the printer driver tes...

Page 243: ...inter goes to READY Any attempt to write to the disk will be flushed since the disk has not been formatted Press to verify that the disk is to be formatted or press to skip formatting the disk This message will not display for new unformatted disk eg The disk is to be formatted for the 1st time Press ENTER to start disk testing NOTE this operation will cause the disk to format when press enter to ...

Page 244: ... Unknown size paper Load Manual tray with paper size Like Load but for manual feed only The paper tray is repositioning the stack after new paper was loaded The paper tray is repositioning the stack displayed for the duration of the printer s processing time PJL RDYMSG DISPLAY will have higher priority than OF message Replace the toner cartridge as soon as possible The printer will continue to ope...

Page 245: ...near the left cover A paper jam occured near the right cover A paper jam occured near the upper cover Paper jam has occurred somewhere in the paper path Paper jam has occurred in the input paper path Paper jam has occurred in the input paper path Paper jam has occurred in the fixing unit area Paper jam has occurred in the fixing unit Remove the paper from the tray Remove the paper from the tray Re...

Page 246: ...ve the jammed paper from the paper path The upper cover must be opened and closed to resume printing Remove the jammed paper from the paper path The upper cover must be opened and closed to resume printing Remove the jammed paper from the paper path The upper cover must be opened and closed to resume printing Remove the jammed paper from the paper path The upper cover must be opened and closed to ...

Page 247: ...mory test error 01 CRC receive error 02 Receive over run error must be opened and closed to resume printing Check the Paper Deck Remove the jammed paper from the paper path The upper cover must be opened and closed to resume printing Check the Paper Deck Remove the jammed paper from the paper path The upper cover must be opened and closed to resume printing Reconnect the paper deck to the printer ...

Page 248: ... acquire a node ID 12 Aborted during a receive Tow network cards of the same type are installed in printer The Ethernet card is not communicating with the controller The Ethernet card is not communicating with the controller The Ethernet card is not communicating with the controller Unknown Fuser Error Abnormally low fuser temperature Fuser warm up time out Fuser overheating Fuser Error Unknown Sc...

Page 249: ...ry paper sensor Initial Jam Jam at delivery paper sensor Stay Jam Jam at delivery paper sensor Delay Jam Jam at delivery paper sensor Early Jam Jam at Staple tray sensor Initial Jam at Staple tray sensor Stay Jam at Staple tray sensor Delay Jam near the stapler Staples low empty and or perform STAPLE TEST from the TEST MENU See M 10 of page 4 43 See M 11 of page 4 43 Check the area specified Check...

Page 250: ...ecting sensor Malfunction of paper deck feed motor Malfunction of paper deck lifter Resident ROM checksum error Resident DRAM error TEST must be executed every time the staples cartridge is removed or reinstalled regardless if the staple cartridge is full or not The printer will not staple jobs correctly if STAPLE TEST is not executed See service manual of stapler stacker See service manual of sta...

Page 251: ...operation has completed The system will now restart A Reset operation has been performed by the Operator in the middle of a job The current job is being flushed This message displays when the disk is being formatted This message displays when one of the PSIO cards is being initialized This message may display if the upper tray is missing Displays when a key is pressed that is not Turn the power OF...

Page 252: ...ize has been found in the same tray Printer is OFFLINE Usually displayed when printing an item form the TEST MENU or when attempting to go offline while the printer is busy Printer is ready to receive data and print A paper jam or misfeed has occurred in or near the unit specified A paper jam or misfeed has occurred in or near the unit specified A paper jam or misfeed has occurred in or near the u...

Page 253: ...r the unit specified Displays when TEST RESET PRINTER item is selected Displays when TEST FACTORY DEFALTS item is selected The AIR Chip has failed Printer is warming up No action required No action required Replace the video controller PCB Wait until the printer has warmed up and displays READY Message Meaning Action ...

Page 254: ...pper roller re install the thermistor correctly 3 The thermistor wire is broken Action Turn the power OFF and remove the fixing unit Measure the resistance between the fixing unit connector J50B 2 FSRTH and J50B 3 GNDTH If the resistance is not between 150kΩ and 290kΩ normal temperature check the wiring from connector J222 on the DC controller PCB to the thermistor If it is normal replace the ther...

Page 255: ...laser drive signal line connectors are loose Action Reconnect connector J1001 on the laser driver PCB and connector J202 on the DC controller PCB 4 The laser scanner unit is defective The BD signal is not output correctly Action Replace the laser scanner unit 5 The DC controller PCB is defective Action Replace the DC controller PCB M 5 Scanner Motor Malfunction Possible causes 1 The scanner motor ...

Page 256: ...onnector J208 on the DC controller PCB 2 The fixing unit scanner fan is defective Action Disconnect connector J208 on the DC controller PCB Turn the power switch ON and measure the voltage between connector J208 1 FAN1D and J208 3 GND on the DC controller PCB If the voltage changes from 0 to more than 18V replace the fixing unit scanner fan 3 The DC controller PCB is defective Action Replace the D...

Page 257: ...an is defective Action Disconnect connector J225 on the DC controller PCB Turn the power switch ON and measure the voltage between connector J225 1 FAN4D and J225 3 GND on the DC controller PCB If the voltage changes from 0 to more than 18V replace the fixing unit fan 3 The DC controller PCB is defective Action Replace the DC controller PCB M 11 Lifting Plate Failure Possible causes 1 Lifting plat...

Page 258: ... the correct line voltage is not available at the outlet 2 The power cord is not firmly plugged into the printer the paper deck and the outlet Action Push the power plugs in firmly 3 The circuit breaker is off Action Remove the power supply Press the circuit breaker button to set the circuit breaker ON Turn the circuit breaker on 30 seconds after it is turned on Before plugging the power cord into...

Page 259: ...power switch OFF and remove connector J203 from the paper deck driver PCB Plug the power cable into the power supply and turn the printer power ON Then measure the DC power supply through connector J203 While doing this be careful not to short it If the correct voltage is not being output replace the power supply 8 Cable DC load and paper deck driver PCB Action Turn OFF the printer power switch an...

Page 260: ...ged gear Action Check the gears and replace if damaged 6 Defective lifter clutch Action Remove connector J119 from the lifter clutch Measure the resistance between connectors J119 1 and J119 4 on the clutch side Replace the lifter clutch if the resistance is not about 155Ω 7 Faulty lifter abnormal position sensing switch Action Remove connector J121 from the lifter abnormal position sensing switch...

Page 261: ...e the DC controller PCB M 18 No Paper Pick Up from Upper or Lower Cassette Possible causes 1 Video controller PCB is defective Action Use the printer driver tester to make a test print from the cassette with a paper pick up failure If the paper is picked up correctly from the cassette replace the video controller PCB 2 Pick up drive unit is damaged Action Remove the pick up unit and replace any da...

Page 262: ...r Pick Up from Paper deck Possible causes 1 Damaged part in the paper pick up drive unit Action Remove the pick up unit and replace any damaged parts 2 Faulty pick up solenoid Action Remove pick up solenoid connector J115 Measure the resistance between connectors J115 1 and J115 2 on the cable side If it is not about 190 replace the pick up solenoid 3 Defective pick up motor Action Load one sheet ...

Page 263: ...ation clutch 3 Defective paper deck driver PCB Action Replace the paper deck driver PCB M 23 Poor Output from the High Voltage Power Supply Possible causes 1 A terminal of the high voltage contacts is dirty or burnt out Action Clean the terminals of the high voltage contact Replace if is burnt out 2 The high voltage power supply PCB is defective Action Replace the high voltage power supply PCB 3 T...

Page 264: ...nnector J204 on the paper deck driver PCB 2 Faulty deck motor Action Measure the voltage between connectors J204 4 DCMOT ON and J204 2 GND on the paper deck driver PCB Pull out the tray when pushed back in if the measured value changes from 5V to 0V replace the deck motor 3 Defective paper deck driver PCB Action Replace the paper deck driver PCB CHAPTER 4 4 50 ...

Page 265: ...lexing unit 2 fixing and delivery unit 3 envelope feeder unit 4 pick up unit and 5 paper deck unit The following explains troubleshooting for jams in each of these units Figure 4 7 1 1 Duplexing unit 2 Fixing and delivery unit 3 Envelope feeder unit 4 Pick up unit 5 Paper deck unit CHAPTER 4 4 51 1 2 3 4 5 ...

Page 266: ... pick up roller if it is dirty Replace if worn or deformed 8 The pick up roller does not rotate when a print is being made Action Make a check using the steps of M 17 No Paper Pick up from Multi purpose Tray 9 The cassette is not positioned correctly Action Re position the cassette properly 10 The print paper is bent Action Replace the paper 11 Too much paper in the cassette Action Advise the cust...

Page 267: ...er 10 The fixing unit delivery roller does not rotate smoothly Action Check whether any gears are worn or missing 11 The face down delivery roller does not rotate smoothly Action Check whether any gears are worn or missing J 3 Duplexing Unit Possible causes 1 Foreign matter is adhering to the feed guide or it is burred Action Remove any foreign matter If the guide is burred replace it 2 The switch...

Page 268: ... Feeder J 5 Paper Deck Possible causes 1 Paper is not correctly loaded in the paper deck Action Reload correctly 2 The side and end guides are not inserted correctly For example when feeding A4 size paper if the end paper guide has not been inserted the paper deck presumes that A3 paper is to be fed causing a paper jam due to a difference in timing Action Insert the guides correctly 3 Paper is fol...

Page 269: ... being used Action Replace the paper Advise the customer to use the recommended paper 2 The paper is damp Action Advise the customer on how to store paper to prevent it from dampening 3 The separation roller is worn or deformed Action Open the upper cover before a sheet of paper enters the fixing unit If there are wrinkles on the paper at this point or the paper is skewed check the pick up unit 4 ...

Page 270: ...mmended paper is not being used Action Replace the paper Advise the customer to use the recommended paper 2 Too much paper on the paper feed slot Action Tell the customer not to over load the paper feed slot with paper 3 The print paper is not loaded correctly Action Load it correctly so that it is aligned with the guide edge of the multi purpose tray 4 Paper dust or dirt is adhering to the regist...

Page 271: ...This page intentionally left blank CHAPTER 4 4 57 ...

Page 272: ...VIII LOCATION OF ELECTRICAL PARTS FUNCTION A Switches Figure 4 8 1 CHAPTER 4 4 58 SW1401 SW1604 SW1603 SW1602 SW1601 SW1604 SW1603 SW1602 SW1601 SW101 SW701 SW702 SW703 SW704 SW601 SW602 SW31 ...

Page 273: ...tte size sensing switch Lower cassette size sensing switch Upper cassette size sensing switch Upper cassette size sensing switch Upper cassette size sensing switch Upper cassette size sensing switch Lifter abnormal position sensing switch paper deck Paper level sensing switch paper deck Paper level sensing switch paper deck Paper size sensing switch paper deck Paper size sensing switch paper deck ...

Page 274: ...B Sensors Figure 4 8 2 CHAPTER 4 4 60 PS931 PS21 PS24 PS22 PS23 PS1401 PS1402 PS1403 PS1302 PS1 PS1301 PS2 PS1208 PS1202 PS1206 PS1205 PS1207 PS1201 PS1204 PS1203 TH TP PS3 ...

Page 275: ...ette paper level sensor 1 Upper cassette paper level sensor 2 Lower cassette paper out sensor Upper cassette paper out sensor Multi purpose tray paper sensor Lifting plate position sensor Face down tray paper full sensor Face down tray delivery sensor Fixing unit delivery sensor Duplexing unit paper sensor duplexing unit Switchback sensor duplexing unit Side registration guide home position sensor...

Page 276: ...Figure 4 8 3 CHAPTER 4 4 62 PS35 PS33 PS31 PS32 PS34 ...

Page 277: ... 4 63 Photointerrrupter PS31 PS32 PS33 PS34 PS35 Code Symbol Name Role Registration paper sensor paper deck Paper jam sensor paper deck Tray paper out sensor paper deck Paper surface sensor paper deck Door sensor paper deck ...

Page 278: ...C Clutches and Solenoids Figure 4 8 4 CHAPTER 4 4 64 SL22 SL21 CL21 SL3 SL1 CL1 CL3 CL2 SL2 ...

Page 279: ...ole Registration clutch Feed clutch Manual feed clutch Duplex feed clutch duplexing unit Lifter clutch paper deck Registration clutch paper deck Feed clutch paper deck Cassette pick up solenoid Lifting plate solenoid Face up solenoid Switchback roller release solenoid duplexing unit Duplex deflector drive solenoid duplexing unit Pick up solenoid paper deck ...

Page 280: ...D Motor and Others Figure 4 8 6 CHAPTER 4 4 66 SMT11 MT1 FAM1 H1 H2 SMT21 SMT22 SMT1 FAM2 FAM3 FAM4 ...

Page 281: ... motor Fixing heater Main motor Pick up motor Envelope feeder pick up motor envelope feeder Switchback motor duplexing unit Side registration motor duplexing unit Pick up motor paper deck Deck motor paper deck Fixing unit Scanner unit fan Power supply fan Electrical unit fan Fixing unit fan Fixing main heater Fixing sub heater SMT31 MT31 ...

Page 282: ...E PC Boards Figure 4 8 8 CHAPTER 4 4 68 7 8 6 6 3 4 2 1 5 ...

Page 283: ...loads and the DC controller PCB Cassette size detection Controls loads in the duplexing unit and sensors Controls the envelope feeder motor and sensors Controls of motors solenoid and clutches and detection inside thepaper deck Paper level detection paper deck Paper size detection paper deck DC controller PCB High voltage power supply PCB Pick up PCB Multi purpose tray PCB Switch sensor PCB Casset...

Page 284: ... 4 8 10 CHAPTER 4 4 70 J1001 J1 J18 J1601A J1601B J12 J1401 J202 J206 J205 J203 J208 J215 J210 J218 J216 J221 J25 J225 J209 J219 J14 J15 J16 J17 J13 J1204 J1203 J1205 J1202 J1201 J1206 J14 J12 J13 J26 J1402 J207 J6 J3 J11 ...

Page 285: ...Figure 4 8 11 CHAPTER 4 4 71 J24 J932 J931 J54 J50 J51 J52 J53 J19 J10 J24 J204 J213 J214 J222 J1302 J1304 J1303 J1301 J19 J23 J20 J21 J22 J2005 J2008 J2007 J2001 J2004 J2002 J2006 J2003 J2009 J102 J217 ...

Page 286: ...Figure 4 8 12 CHAPTER 4 4 72 J207 J210 J206 J205 J204 J203 J209 J701 J601 J119 J114 J116 J101 J118 J901 J208 J115 J117 J110 J111 J113 J11 2 J108 J203 J205 J102 J107 J120 ...

Page 287: ...eive leakage current during normal operation causing a dim glow even when they should be OFF 2 Potentiometers which may be adjusted in after sales service are marked Potentiometers which may not be adjusted in after sales service are marked A DC Controller PCB Figure 4 9 1 Table 4 9 1 CHAPTER 4 4 73 J221 1 3 J216 1 3 J214 1 9 J213 1 8 J222 1 6 SW201 J210 J209 J224 J215 1 10 1 1 1 2 5 3 J219 1 2 20...

Page 288: ...nsing Switch PCB Figure 4 9 3 Table 4 9 3 CHAPTER 4 4 74 J1402 2 1 SW1401 3 1 2 4 J1401 1 14 Door switch SW No SW1401 Function J1601 5 1 SW1604 SW1603 SW1602 SW1601 Cassette paper size sensing switch See table 2 5 1 of page 2 45 SW No SW1601 SW1602 SW1603 SW1604 Function ...

Page 289: ...D High voltage Power Supply PCB Figure 4 9 4 Table 4 9 4 CHAPTER 4 4 75 VR701 B10 A10 6 J701 VR702 A1 B1 TB703 TB702 TB701 TB704 T704 5 2 1 7 TB706 TB705 VR No VR701 VR702 Function For factory use ...

Page 290: ...E Video Controller PCB Figure 4 9 5 Table 4 9 5 CHAPTER 4 4 76 J5 J4 J3 J9 J7 J8 J11 J10 J1 J2 J6 JP1 JP No JP1 Function For factory use ...

Page 291: ...F Envelope Feeder Driver PCB Figure 4 9 6 Table 4 9 6 CHAPTER 4 4 77 VR2 4 1 J932 VR1 4 1 J931 VR1 VR2 Function VR No For factory use ...

Page 292: ...tion Controller PCB Figure 4 9 7 Table 4 9 7 Table 4 9 8 CHAPTER 4 4 78 SW No SW101 Function For factory use JP No JP101 Function For factory use SW101 J102 J101 B1 B10 A1 A10 11 6 1 15 10 5 JP101 ON OFF 1 ...

Page 293: ...o re enter the test mode and continue the pick up process short TEST 1 and GND again Notes 1 Even though the paper deck enters test mode and runs the pick up operation the printer does not operate Therefore if paper is picked up and fed into the printer CHAPTER 4 4 79 J203 1 6 J202 5 10 15 1 6 11 J201 5 10 15 1 6 11 1 2 3 4 5 J209 5 1 J205 4 1 J210 3 1 J206 2 1 J 204 6 1 J208 1 1 1 J211 3 1 J207 1...

Page 294: ...oad one sheet of paper at a time in the tray If multiple sheets are loaded in the tray the paper deck will continuously feed paper into the printer until running out causing a paper jam 2 Test mode will not be entered if the power is turned ON before shorting TEST 1 and GND 3 Test 1 must be left open CHAPTER 4 4 80 ...

Page 295: ...itch PCB Figure 4 9 10 Table 4 9 11 CHAPTER 4 4 81 J701 5 1 SW704 SW703 SW702 SW701 SW No SW701 SW702 SW703 SW704 Paper size sensing switch Function See table 2 10 2 of page 2 87 J701 3 1 SW601 SW602 SW No SW601 SW602 Paper level sensing switch See table 2 10 1 of page 2 87 Function ...

Page 296: ...from flame Lubricating oil Petroleum mineral oil Apply between gear and shaft Tool No CK 8003 100 ml bottle Lubricating agent Special oil Special solid lubricating material Lithium soap Apply to gears Tool No HY9 0007 20 g tube 3 4 Lubricating agent Lithium oil Apply to gears of the pick up unit 5 Lubricating agent Synthetic oil Special thickener Apply to gears of the manual feed pick up unit 6 To...

Page 297: ...APPENDIX I GENERAL TIMING CHART A 1 II GENERAL CIRCUIT DIAGRAM A 3 III LIST OF SIGNALS A 7 ...

Page 298: ......

Page 299: ...ignal PRNT VERTICAL SYNC signal VSYNC Main motor MT1 Pick up motor SMT1 Cassette pick up solenoid SL1 Feed clutch CL2 Registration clutch CL1 Pick up unit paper sensor PS2 Registration paper sensor PS1 Fixing unit delivery sensor PS1403 Face down tray delivery sensor PS1402 Primary voltage AC Primary voltage DC Developing bias AC Developing bias DC Transfer voltage Static charge eliminator bias Up...

Page 300: ...CAL SYNC signal VSYNC Switchable motor SMT21 Duplex deflector drive solenoid SL22 Switchback sensor PS22 Duplexing unit paper sensor PS21 Duplex feed clutch CL21 Fixing unit delivery sensor PS1403 Operation Timing chart for two consecutive prints on A4 paper Duplexing feed Power switch ON Rotation About 1 5 169 C control 180 C control 169 C control Unit Seconds Reverse rotation Reverse high speed ...

Page 301: ...ND GND GND GND BD HVTS HVTVLTD HVTRVSD HVTCRTD N C HRLBD N C DCHGBD TONRS HV1FRQ DENADJ DCHGUP DBACD HV1DCD DBFRQ DBDCD GND GND 24VB 24VB J220 J203 J202 J207 J206 J209 J208 J210 FPO FPI FPCS FPCK 5V GND LLCONT GND PD LENBL LON GND VDO GND 5V N C SCNRDY SCND SCNCLK GND 24VA GND BDI 5V REGCLD 24VA REGS GND P5VB3 FAN1D FAN1S GND FAN3D FAN3S GND J204 J217 J222 J219 J218 J214 GND 24VA P5VB2 MPTCLD MPTS...

Page 302: ... 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 1 2 3 4 5 6 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 3 2 1 3 2 1 3 2 1 2 1 1 2 4 3 2 1 4 3 2 1 3 2 1 3 2 1 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 J119 J116 J118 J601 J701 J206 J205 J204 J210 J209 J201 J202 J207 J208 J203 J901 J110 J109 J115 J1...

Page 303: ...1 MD27 MD12 MD28 VCC MD29 MD13 MD30 MD14 MD31 MD15 N C N C N C N C N C N C GND J4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 GND MD0 MD16 MD1 MD17 MD2 MD18 MD3 MD19 VCC N C BMA0 BMA1 BMA2 BMA3 BMA4 BMA5 BMA6 BMA10 MD4 MD20 MD5 MD21 MD6 MD22 MD7 MD23 BMA7 N C VCC BMA8 BMA9 nRAS3 nRAS2 GND GND 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 ...

Page 304: ...APPENDIX A 6 ...

Page 305: ...PUT signal B4 Reserved B5 RDY O L READY signal B6 CPRDY I L CONTROLLER POWER READY signal B7 SBSY O L STATUS BUSY signal B8 CBSY I L COMMAND BUSY signal B9 Reserved B10 PFEED O L PAPER FEED signal B11 Reserved B12 5V O B13 5V O B14 5V O B15 GND B16 GND C1 VDO I H VIDEO signal C2 GND C3 FPI O L FRONT PANEL SERIAL INPUT signal C4 FPCK I H FRONT PANEL SERIAL CLOCK signal C5 PPRDY I L PRINTER POWER RE...

Page 306: ...A I J205 1 GND 2 GND 3 24VA O 4 24VA O 5 24VA O 6 UDOORS I H UPPER DOOR OPEN SENSE signal 7 FDFULS I H FACE DOWN TRAY PAPER FULL SENSE signal 8 FPOUTS I L FIXING UNIT DELIVERY SENSE signal 9 FDOUTS I H FACE DOWN TRAY DELIVERY SENSE signal 10 FUSLD O L FACE UP SOLENOID DRIVE signal 11 P5VB1 O J206 1 GND 2 BDI I L BEAM DETECTION INPUT signal 3 5V O J207 1 SCNRDY I L SCANNER MOTOR READY signal 2 SCND...

Page 307: ...E FEEDER COMMAND signal 9 ENVSTS I ENVELOPE FEEDER STATUS signal J215 1 GND 2 LSIZE4 I L LOWER CASSETTE PAPER SIZE SENSE signal 3 LSIZE3 I L LOWER CASSETTE PAPER SIZE SENSE signal 4 LSIZE2 I L LOWER CASSETTE PAPER SIZE SENSE signal 5 LSIZE1 I L LOWER CASSETTE PAPER SIZE SENSE signal 6 GND 7 USIZE4 I L UPPER CASSETTE PAPER SIZE SENSE signal 8 USIZE3 I L UPPER CASSETTE PAPER SIZE SENSE signal 9 USIZ...

Page 308: ...D DRIVE signal 10 LDECKC I L LOWER CASSETTE PAPER OUT SENSE signal 11 LDECKS I L LOWER CASSETTE SENSE signal 12 LPVS2 I LOWER CASSETTE PAPER LEVEL SENSE signal 2 13 LPVS1 I LOWER CASSETTE PAPER LEVEL SENSE signal 1 14 UPVS2 I UPPER CASSETTE PAPER LEVEL SENSE signal 2 15 UPVS1 I UPPER CASSETTE PAPER LEVEL SENSE signal 1 16 RDOORS I L RIGHT DOOR OPEN SENSE signal 17 24VA O 18 P5VBDOR O 19 GND 20 GND...

Page 309: ...1 FSRTYP1 I FIXING MAIN HEATER TYPE SENSE signal 2 FSRTP1R 3 FSRTP2R 4 FSRTYP2 I FIXING SUB HEATER TYPE SENSE signal 5 FSRTH I FIXING ROLLER TEMPERATURE SENSE signal 6 GND J223 1 TONRS I TONER LEVEL signal 2 GND J225 1 FAN4D O H FAN MOTOR 4 DRIVE signal 2 FAN4S I L FAN MOTOR 4 ROTATING DETECTION signal 3 GND 4 N C Connector Pin Abbreviation I O Logic Signal name ...

Page 310: ...C B3 VSYNC I L VERTICAL SYNC signal B4 PFED I L PAPER FEED signal B5 GND B6 undetermined 2 I L For expansion B7 STROBE L STROBE signal B8 RX O L SERIAL OUT signal B9 CLK O L SYNCHRONIZED CLOCK signal B10 GND J102 1 TX O L SERIAL OUT signal 2 GND 3 RX I L SERIAL IN signal 4 TERMINATE I L COMMUNICATION READY signal 5 N C 6 CLOCK I L SYNCHRONIZED CLOCK signal 7 GND 8 GND 9 GND KEY Mis insertion preve...

Page 311: ...I I L Communication ready signal 5 24V 6 CKO I L SYNCHRONOUS CLOCK signal 7 GND 8 GND 9 GND 10 24V 11 GND 12 STRBO O L STROBE signal 13 PWRON OUT O L POWER ON signal 14 GND 15 24V J203 1 24V I 2 24V I 3 PWRON IN O L POWER ON signal 4 5V I 5 GND 6 GND J204 1 GND 2 GND 3 DCMOT RDY I L DECK MOTOR READY signal 4 DCMOT ON O L DECK MOTOR DRIVE signal 5 24V O 6 24V O J205 1 FEDBND O PICK UP MOTOR CONTROL...

Page 312: ...SOLENOID DRIVE signal 3 5V O 4 GND 5 PAP EXIST I L TRAY PAPER OUT SENSE signal 6 5V O 7 GND 8 LIFT I H PAPER SURFACE SENSE signal 9 5V O 10 GND 11 DOOR I L DOOR OPEN SENSE signal J209 1 GND 2 PAP SIZE4 I L PAPER SIZE SENSE signal 4 3 PAP SIZE3 I L PAPER SIZE SENSE signal 3 4 PAP SIZE2 I L PAPER SIZE SENSE signal 2 5 PAP SIZE1 I L PAPER SIZE SENSE signal 1 J210 1 GND 2 PAP VOL1 I PAPER LEVEL SENSE ...

Page 313: ...ERIPHERAL PRODUCTS QUALITY ADVANCEMENT DIV PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT CANON INC Printed in Japan REVISION 0 APRIL 1997 REVISION 1 DEC 1997 5 1 Hakusan 7 chome Toride City Ibaraki Pref 302 Japan ...

Page 314: ...The printing paper contains 70 waste paper PRINTED IN JAPAN IMPRIME AU JAPON 1297AT1 40 CANON INC ...

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