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COPYRIGHT © 1999 CANON INC.

CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

3. ITD Cleaning Bias Generation Circuit

This circuit is controlled by four signals (Figure 4-610) from the DC controller PCB,

and generates the ITD cleaning DC (positive) bias, ITD cleaning DC (negative) bias, and
ITD cleaning AC bias for application to the ITD cleaning roller.

The ITD cleaning DC (positive) bias drive signal is used to turn on and off the DC

(positive) bias applied to the ITD cleaning roller, while the ITD cleaning DC (negative)
bias drive signal is used to turn on and off the DC (negative) bias applied to the ITD
cleaning roller.

The ITD cleaning AC bias drive signal, on the other hand, is used to switch the ITD

cleaning AC bias level to suit the conditions of the environment.

Figure 4-610

4. Fixing Separation Bias Generation Circuit

This circuit is controlled by the fixing separation DC bias drive signal from the DC con-

troller PCB, and generates the fixing separation DC bias for application to the upper fix-
ing roller.

The voltage applied to the upper fixing roller is controlled by the fixing separation DC

bias drive signal. The level of the fixing separation DC bias, further, is kept to a specific
level.

CHAPTER 4 IMAGE FORMATION SYSTEM

4-32

DC controller

PCB

ITD cleaning bias

generation circuit

ITD cleaning DC (positive)

bias drive signal

ITD cleaning DC (negative)

bias signal

ITD cleaning bias level

switch signal

AC
+
DC

(positive) or

DC

(negative)

ITD cleaning AC bias

drive signal

ITD cleaning roller

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Summary of Contents for CP660

Page 1: ...COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON FEB 1999 FY8 13FJ 000 REVISION 0 Download free service manual at http printer1 blogspot com ...

Page 2: ... JAPAN SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE COMPANY Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 3 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION C...

Page 3: ...its involved in image formation are operated and shows how they may be disassembled assembled and adjusted Chapter 5 Pick Up Feeding System discusses the principles of how the printer unit picks up and moves paper inside it It also explains the timing at which the various units involved are operated and shows how they may be disassembled assembled and adjust ed Chapter 6 Fixing System discusses th...

Page 4: ...flipping on the power switch closing the front door and closing the delivery unit door which results in supplying the machine with power 2 In practically all cases the internal mechanisms of a microprocessor cannot be checked in the field Therefore the operations of the microprocessors used in the machines are not discussed they are explained in terms of from sensors to the input of the DC control...

Page 5: ...ires the Attachment Kit for STR H1 if the printer unit is mounted to a Rack A1 2 3 Network Color PS PCL Board A1 2 Token Ring Board TB83 1 Covered in this Service Manual 2 Covered in a separate Service Manual 3 If the printer unit is installed as a copier Requires the ACC Interface Unit B1 Requires the ACC Controller A1 If the printer unit is installed as a copier and a printer Requires the ACC Co...

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Page 7: ...lock 1 34 CHAPTER 2 BASIC OPERATION I BASIC OPERATIONS 2 1 A Functional Construction 2 1 B Electrical Circuitry 2 2 C Inputs to and Outputs of the Major PCBs 2 3 D Basic Sequence of Operations used as a printer 2 14 E Controlling the Main Motor 2 19 CHAPTER 3 LASER EXPOSURE SYSTEM I OUTLINE 3 1 II LASER CONTROL CIRCUIT 3 3 A Outline 3 3 B Image Signal Processing 3 5 C Controlling the Laser Intensi...

Page 8: ...of the Photosensitive Drum 4 8 D Monitoring the Waste Toner Case 4 9 III DEVELOPMENT 4 10 A Outline 4 10 B Controlling the Developing Rotary 4 12 C Locking the Developing Rotary 4 14 D Detecting the Absence of the Toner Cartridges 4 14 E Detecting the Level of Color Toner 4 16 F Checking the Presence Absence of a Color Toner Cartridge 4 17 G Checking the Level of Black Toner and the Presence Absen...

Page 9: ...te Switch 7 6 C Protective Mechanisms 7 7 D Power Save Mode 7 8 IV DISASSEMBLY ASSEMBLY 7 9 A Fans 7 10 B Power Supply Assembly 7 13 CHAPTER 8 INSTALLATION I SELECTING THE SITE 8 1 II UNPACKING AND INSTALLATION 8 3 A Unpacking the Printer Unit 8 3 B Installing the Printer Unit 8 4 C Making Settings and Checking Images and Operations 8 11 D Selecting the Type of Message for the Printer Unit 8 14 II...

Page 10: ...rror Codes 10 29 B Faults Not Identified by Error Codes 10 45 IV TROUBLESHOOTING FEEDING PROBLEMS 10 58 A Paper Jams 10 58 B Faulty Feeding 10 66 V ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 10 69 A Sensors 10 70 B Thermistors Lamps and Heaters 10 72 C Clutches and Solenoids 10 74 D Fans and Motors 10 75 E PCBs 10 76 F Duplexing Unit 10 78 G Variable Resistors VR Light Emitting Diodes and Check...

Page 11: ...ernal View 1 7 B Cross Section 1 11 V USING THE CONTROL PANEL 1 13 VI NOTES TO THE USER 1 15 VII NOTES TO THE SERVICE PERSON 1 16 A Storing the Drum Cartridge and the Toner Cartridges 1 16 B Points to Note When Handling the Drum Cartridge and the Toner Cartridges 1 18 VIII IMAGE FORMATION 1 20 A Outline 1 20 B Latent Static Image Formation Block 1 22 C Development Block 1 25 D Transfer Block 1 27 ...

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Page 13: ...y development con struction so that they including the black toner cartridge may be replaced by the user without effort The black toner cartridge is a large capacity cartridge suitable for business uses which require large volumes of black and white printing work 3 Auto Duplexing Mechanism The installation of a duplexing unit accessory will enable making double sided prints through path configurat...

Page 14: ...ner Bk Toner supply By replacement of Y M C and Bk toner cartridges Pick up Special front cassette 2 holders multifeeder Transfer Primary transfer rubber blade Intermediate transfer drum cleaning roller Fixing Heat roller top 595 W bottom 595 W 100 120 V top 550 W bottom 550 W 220 240 V COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCR...

Page 15: ...e A3 11 17 to A5 if B5 and A5 horizontal only 12 18 5 Print paper Cassette Plain paper 60 to 105 g m2 colored paper recycled paper Multifeeder Plain paper 60 to 105 g m2 transparency special thick paper 106 to 135 g m2 label sheet special envelope col ored paper recycled paper Double sided Duplexing unit if installed A3 to B5R plain paper 60 to printing 105 g m2 Image margin Single sided Double si...

Page 16: ...GER 230V AMS 230V ITA Weight printer unit only 91 6 kg including drum cartridge weighing about 2 3 kg black toner cartridge about 1 5 kg each color toner cartridge about 1 2 kg The duplexing unit weighs about 3 5 kg COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION 1 4 4 Others Download free service manual at http printer1 blogsp...

Page 17: ...nning if face down delivery add 3 sec for plain paper 6 sec for thick paper and 7 sec for transparency unit sec or less Source Cassette Multifeeder Multifeeder Multifeeder Plain paper Thick paper Transparency Size A3 B4 A4R B5 A5R 11 17 LGL LTRR A4 LTR A3 11 17 A4 LTR A4 LTR 4 color 3 6 1 2 2 4 2 1 Mono color YMCK 12 24 1 7 3 4 2 8 Table 1 202 Printing Speed copies min The above specifications are...

Page 18: ...20 V model The eye if exposed to laser light can suffer permanent damage The machine s laser light is a visible light However the following label is attached to covers that may reflect laser light Pay special attention whenever servicing areas behind such covers COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 1 GENERAL DESCRIPTION 1 6 Do not insert ...

Page 19: ...ED IN JAPAN IMPRIME AU JAPON IV NAMES OF PARTS A External View Front View CHAPTER 1 GENERAL DESCRIPTION 1 7 q w e r t q Face down tray w Front cover e Face up tray r Cassette 1 t Cassette 2 Figure 1 401 Download free service manual at http printer1 blogspot com ...

Page 20: ...ner cartridge slot w Exhaust vent e Right cover r Multifeeder t Pick up cassette cover y Top releasing lever u Bottom releasing lever i Toner cartridge color check window o Color cartridge replacement turret button 0 Color cartridge cover 1 Front right cover 2 Printer unit power switch Figure 1 402 Download free service manual at http printer1 blogspot com ...

Page 21: ...Back CHAPTER 1 GENERAL DESCRIPTION 1 9 q Upper left cover w Delivery cover e Video controller cover r Power supply cord connector printer unit t Interface cable for connection to the reader unit y Rear cover r e t q w y Figure 1 403 Download free service manual at http printer1 blogspot com ...

Page 22: ...N JAPAN IMPRIME AU JAPON Duplexing Unit CHAPTER 1 GENERAL DESCRIPTION 1 10 Figure 1 404 w q r e q Horizontal registration guide w Pick up guide plate e Duplexing feeding roller 1 r Duplexing releasing lever Download free service manual at http printer1 blogspot com ...

Page 23: ...u Intermediate transfer drum i Secondary transfer belt o Multifeeder tray 0 Multifeeder pickup roller 1 Separation pad 2 Feeding roller 2 3 Feeding roller 1 4 Separation roller 5 Pick up roller 6 Registration roller 7 Cassette 1 8 Cassette 2 9 Upper fixing roller 0 Lower fixing roller 1 Duplexing flapper 2 Face up flapper 3 Face up delivery roller 4 Face up tray 5 Intermediate transfer drum ITD cl...

Page 24: ...plexing Unit CHAPTER 1 GENERAL DESCRIPTION 1 12 q y t r w e q Reversing roller releasing plate w Reversal paper sensor e Re pick up sensor lever r Duplexing feeding roller 2 t Duplexing feeding roller 1 y Reversing roller Figure 1 406 Download free service manual at http printer1 blogspot com ...

Page 25: ... the printer and print jobs For details see the PS PCL Board Service Manual CHAPTER 1 GENERAL DESCRIPTION 1 13 This control panel is available only when the printer unit is used as a printer after equipping it with a printer board and is not available if the printer unit is used as a copier Caution Cancel Menu Message Enter Online q w o i u r e y t Download free service manual at http printer1 blo...

Page 26: ...revious number or character Hold down the button to increment rapidly When entering numbers or text advances the cursor When entering number or text back spaces and deletes In setup menus exits menus entirely returning to ready While printing can cels printing or processing the current job Accepts an option and advances to the next choice When the printer is in ready mode takes the printer offline...

Page 27: ...it is expected to remain out of use for a long time e g holidays be sure to shift up the fixing assembly releasing lever as shown to unlock the upper and lower rollers of the fixing assembly CHAPTER 1 GENERAL DESCRIPTION 1 15 Figure 1 601 Fixing Assembly Releasing Lever Download free service manual at http printer1 blogspot com ...

Page 28: ...toreroom or a workshop be sure that the place complies with the conditions in Table 1 601 in addition 1 Avoid direct sunshine 2 Avoid an area subject to appreciable vibration and 3 Avoid subjecting them to impact by hitting or dropping Temperature Humidity 0 to 35 C 35 to 40 C 20 to 0 C 40 C 15 C 20 C 25 C 35 to 85 85 to 95 85 to 95 613 to 1013 hPa 608 to 760 mmHg 1 yr COPYRIGHT 1999 CANON INC CAN...

Page 29: ...eas and areas in which temperature or humidity change rapidly 4 Avoid areas subject to corrosive gas e g insecticide or briny air 5 Make sure the cartridges are kept between 0 and 35 C 6 Do not place the cartridges near a CRT screen disk drive or floppy disks 7 Keep the cartridges out of reach of children 4 Service Life The service life of a cartridge is 2 5 years from the date of manufacture indi...

Page 30: ...ll cartridges if the printer unit must be moved In the case of the drum cartridge put the special protective cover MF4 0106 000 after taking it out of the printer unit and put it in a protective bag or wrap it in a thick cloth to prevent exposure to light 3 Do not place the black toner cartridge near a CRT screen disk drive or floppy disks The magnetic field it generates can damage the data 4 Do n...

Page 31: ...etecting windows of the drum cartridges 9 Do not touch the protection shutter of the toner cartridge CHAPTER 1 GENERAL DESCRIPTION 1 19 Figure 1 702 Toner detecting windows Figure 1 703 Protection shutter Black toner cartridge Y M C toner cartridge Protection shutter Download free service manual at http printer1 blogspot com ...

Page 32: ...trans fer drum primary transfer This series of processes is repeated for each color Y M C and Bk in sequence The toner image on the intermediate transfer drum is then transferred to paper sec ondary transfer and fused to generate a color print CHAPTER 1 GENERAL DESCRIPTION 1 20 Scanning lamp Lens CCD Laser scanner assembly Waste toner case Pre exposure LED Secondary pre transfer charging assembly ...

Page 33: ...ing block Step 9 ITD cleaning roller charging Step 10 ITD cleaning 5 Photosensitive Drum Cleaning Block Step 11 drum cleaning 6 Fixing Block Step 12 fixing Cassette Latent static image formation Development block Delivery Photosensitive drum cleaning block ITD cleaning block Transfer block Fixing block Multifeeder Registration Flow of print paper Rotation of the photosensitive drum Rotation of the...

Page 34: ...ain negative charges while the light areas of the drum which have been exposed to the laser beam are rid of negative charges The image on the drum formed by negative charges is not visible to the human eye and therefore is called latent static image CHAPTER 1 GENERAL DESCRIPTION 1 22 Time t Laser beam exposure step 3 Primary transfer step 5 Primary charging step 2 Primary charging step 2 Pre expos...

Page 35: ...e exposure LED assembly is directed to the surface of the photosensitive drum to remove the residual charges from the surface thereby preventing uneven density CHAPTER 1 GENERAL DESCRIPTION 1 23 LED Photosensitive drum Primary charging roller Pre exposure LED assembly Intermediate transfer drum Figure 1 804 Download free service manual at http printer1 blogspot com ...

Page 36: ...arging roller is given a AC bias in addition to the DC bias to ensure that the potential on the surface of the photosensitive drum will be uniform Step 3 laser beam exposure When a laser beam is directed to the photosensitive drum the charges in its light area become neutralized turning the area into a latent static image CHAPTER 1 GENERAL DESCRIPTION 1 24 Primary charging roller AC bias DC bias P...

Page 37: ... color toner cartridge is housed in a developing rotary and the rotation of the rotary positions each cartridge against the photosensitive drum The black toner cartridge is mounted outside the developing rotary and is positioned against the photosensitive drum at all times When an area of the photosensitive drum exposed to a laser beam approaches a toner layer charged to negative potential the dif...

Page 38: ...e potential When the poten tial of the cylinder is used as the reference the potential of the photosensitive drum is higher than that of the cylinder Caution Figure 1 807 yyy yyy yyy yy yy yy yy Black toner cartridge Stirring plates Blade Developing cylinder Photosensitive drum AC bias DC bias Color toner cartridge Blade Photosensitive drum Stirring plate Toner feeding roller Developing cylinder A...

Page 39: ... DC bias positive is applied to the intermediate transfer drum during printing oper ation In the case of printing in full color four layers of toner four colors are deposited on the intermediate transfer drum ready for primary transfer requiring strengthening toner transfer for the second and subsequent colors as toner with negative potential will increase on the intermediate transfer drum To this...

Page 40: ...plied to the secondary pre transfer charging assembly so that each color toner on the intermediate transfer drum will receive an appropriate bias thereby ensuring good secondary transfer CHAPTER 1 GENERAL DESCRIPTION 1 28 AC bias DC bias Secondary pre transfer charging assembly Intermediate transfer drum Figure 1 809 Download free service manual at http printer1 blogspot com ...

Page 41: ...a negative DC bias is applied at the end of secondary transfer for removing charges from the belt During multiple initial rotation a negative DC bias is applied to prevent soiling the back of paper i e the toner adhering to the surface of the secondary belt is returned to the intermediate transfer drum To prevent excessive increases of charges on the transfer belt caused by continuous application ...

Page 42: ... paper and the selected environmental parameters an AC bias is applied to the separation static eliminator to prevent stray images toner caused by charges used to separate paper from the secondary transfer belt CHAPTER 1 GENERAL DESCRIPTION 1 30 Secondary transfer belt assembly Separation static eliminator Paper DC bias AC bias Intermediate transfer drum Figure 1 811 Download free service manual a...

Page 43: ...lied to the ITD cleaning roller to charge the toner on the intermediate transfer drum to a uniform potential At the end of charging the bias is turned off and at the same time the cleaning roller cam is driven to move the ITD cleaning roller away from the intermediate transfer drum At the end of printing a negative bias is applied to remove the residual toner adher ing to the ITD cleaning roller C...

Page 44: ...itive drum The resulting difference in potential between the photosensitive drum and the intermediate transfer drum causes the residual toner to move from the intermediate transfer drum to the transfer drum CHAPTER 1 GENERAL DESCRIPTION 1 32 Intermediate transfer drum ITD cleaning roller Photosensitive drum Primary charging roller Waste toner case Photosensitive drum cartridge Primary charging bia...

Page 45: ... is cleaned in preparation for the next printing run thus ensuring continuous reproduction of sharp images Step 11 photosensitive drum cleaning In this step the residual toner on the drum surface is scraped off by a cleaning blade in preparation for the next printing run The scraped toner is collected by a scoop up sheet and is sent to the waste toner case by the waste toner feeding roller 1 waste...

Page 46: ...oners are fused into the fibers of the paper so that they will turn into a permanent image Step 12 fixing The surface of the upper and lower rollers is coated with Teflon tubing material with good separation characteristics A negative DC bias is applied to the upper fixing roller to prevent toner on the paper from sticking to the rollers CHAPTER 1 GENERAL DESCRIPTION 1 34 Lower roller Halogen heat...

Page 47: ...een electrical and mechanical systems and timing at which each asso ciated part is turned on CHAPTER 2 BASIC OPERATION I BASIC OPERATIONS 2 1 A Functional Construction 2 1 B Electrical Circuitry 2 2 C Inputs to and Outputs of the Major PCBs 2 3 D Basic Sequence of Operations used as a printer 2 14 E Controlling the Main Motor 2 19 Download free service manual at http printer1 blogspot com ...

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Page 49: ...iver PCB Laser scanner Image formation system Printer unit Delivery Fixing Separation Registration Cassette 1 Cassette 2 Pick up control Multifeeder Pick up feeding system Secondary pre transfer charging ITD cleaning roller charging Pre exposure Primary transfer Laser exposure Laser exposure system Photosensitive drum cleaning Development ITD cleaning Primary charging Secondary transfer Duplexing ...

Page 50: ...PERATION 2 2 Sensor Switch Density detection PCB Drum cartridge memory Laser driver PCB Scanner motor BD PCB Accessories controller PCB1 Duplexing driver PCB Duplexing unit1 Video interface PCB Reader unit PS PCL board DC controller PCB D CPU IC201 M CPU IC202 RAM IC205 Fan Motor Solenoid Clutch Fan Motor Solenoid Developing rotary motor PCB High voltage PCB 1 Developing bias primary charging Fixi...

Page 51: ...RS 16 6 When the pickup unit cover is opened 0 J13 3 2 1 J1205 1 2 3 J1201 4 14 J210 18 8 5V GND FEEDS P5SAVE FEEDS When the sensor detects paper 0 14 8 UPVS2 Cassette 1 paper level sensor 2 15 5 UPVS1 Cassette 1 paper level sensor 1 12 10 LPVS2 Cassette 2 paper level sensor 2 13 7 LPVS1 Cassette 2 paper level sensor 1 Registration paper sensor When the sensor detects paper 0 REGS P5SAVE J16 3 1 2...

Page 52: ...ry sensor PS 1903 J1903 3 1 2 J207 10 12 11 PS 1902 PS 621 When the sensor detects paper 1 FXOUTS Developing rotary position sensor J43 3 1 2 J207 3 5 4 DEVHP P5SAVE MPTPS MPTPS P5SAVE When paper is present on the multifeeder tray 0 When the holding plate moves up 1 J213 7 6 3 J1301 7 6 3 1 3 2 3 1 2 J42 1 3 2 3 1 2 J45 P5SAVE P5SAVE 1 3 2 3 1 2 J71 1 3 4 2 4 2 1 3 J70 1 3 2 6 4 5 J17 4 6 5 3 1 2 ...

Page 53: ...1 J227 B11 A1 A11 UCEDFS P5SAVE MPDFS FDOUT FMCOPN FDFULL P5SAVE P5SAVE MPTWID CCRGLED J9 3 1 2 J705 7 9 8 J706 B3 A6 J705 4 6 5 J220 B7 A4 J705 1 3 2 B4 B6 A7 A3 Left cover sensor Face down tray delivery sensor Face down tray full sensor Developing rotary motor PCB CCRGSNS P5SAVE When the color toner cartridge is absent 1 When the sensor detects paper 0 3 2 1 2 3 4 J33 1 3 2 3 1 2 J32 2 3 1 2 1 3...

Page 54: ... For details see p 4 23 For details see p 4 21 For details see p 4 6 Cassette 2 size detecting switch Cassette size detection PCB Cassette 1 size detecting switch Density detection PCB Temperature humidity sensor The size of the cassette 2 is identified based on combinations of the states of the four switches For details see p 5 6 The size of the cassette 1 is identified based on combinations of f...

Page 55: ...C sampling timing signal 2 Laser drive PCB enable signal Video data PWM signal 1 Video data PWM signal 2 BSAMPLE 5V PD BSAMPLE LENB BDATA BDATA BD FEDPHA FEDPHA FEDPHB FEDPHB 24UH PUPSLD FEDCLD M5 CL2 M6 J1204 2 1 J1201 3 10 J210 17 9 J1203 2 1 J1201 12 J210 7 SL3 Cassette pick up solenoid Feeding clutch J40 4 5 7 6 4 3 1 2 J40 1 2 3 7 6 5 24UH J1201 3 J210 17 Laser scanner motor Pick up motor Hor...

Page 56: ...plate is up it moves down if down up When 0 the registration roller rotates When 0 the secondary transfer belt clutch turns on Main motor rotation control When 0 the main motor turns on MPTCLD 24UH FUSLD 24UH MPTSLD REGCLD STRCLD MSPED1 MRDY MON DRMPHA 24UH 24UH 24UH MSPED2 DRMPHA DRMPHB DRMPHB J207 2 1 J213 2 5 J213 4 J212 4 3 J212 2 1 J219 6 1 2 3 4 5 J224 1 2 3 4 5 6 J37 2 1 1 2 J36 2 2 1 1 J41...

Page 57: ...er switch DSW4 DSW5 DSW2 DSW1 When the toner cartridge cover is closed 1 Drum cartridge detecting switch J227 B9 J647 B3 J5002 4 3 24UH J646 1 2 J227 B1 B5 J647 B6 B11 24UH PSAVE FET switch circuit PMP PBK J644 2 1 J673 4 EXSW J643 3 PBK J642 2 J227 A5 J647 A7 J227 B7 J647 B5 PYMC J642 1 SW642 J227 B8 J647 B4 J671 2 PMP J642 3 J227 A4 J647 A8 J227 A3 J647 A9 J227 B6 J647 B6 J671 1 PFUFR J642 4 Hig...

Page 58: ... B1 J220 B9 24UH J647 B2 J227 B10 J647 A10 J227 A2 FAN1ON FAN1LK When 0 the fan turns on FAN2ON FAN2LK When 0 the fan rotates RLSROT STPROT Developing rotary stopper lever drive control J18 3 2 1 1 2 3 J74 1 2 3 J705 2 1 3 2 3 1 For details see p 4 34 For details see 4 14 24VB J701 1 J648 5 J648 1 2 J701 5 4 3 2 1 J682 3 2 1 J681 2 3 4 J683 2 1 J645 3 2 1 M1 SL1 SL5 FM3 FM1 FM2 Pre exposure LED re...

Page 59: ...ransfer secondary pre transfer charging fixing separation and ITD cleaning roller Controls the bias of the primary charging black development and color development and detects the level of black toner 20 24 For details see p 4 36 For details see p 4 30 For details see p 4 26 Controls the rotation of the developing cylinder for the color and black toner cartridges J229 J5600 6 Controls the bias for...

Page 60: ...lling the reader unit the printer unit power switch is turned on and blocked with a face plate as such it remains on at all times Printer unit power supply switch Power supply control IC Fixing assembly error detection circuit Relay Fixing assembly Upper fixing heater Upper thermistor When a 100 V power supply is mounted 1 When a 200 V power supply is mounted 0 When pulses are generated the upper ...

Page 61: ... When 0 the duplexing feeding roller rotates CL5 M7 HRGCOMA HRGCOMB HRGAD HRGAND HRGBD HRGBND J2005 1 2 3 4 5 6 24VA J21 3 1 2 J22 3 1 2 J23 3 1 2 Horizontal registration guide home position sensor Reversal paper sensor Duplexing paper sensor Duplexing feeder roller 1 home position sensor Reversing roller releasing solenoid Duplexing flapper solenoid Duplexing feeding clutch Duplexing motor Horizo...

Page 62: ...eloping bias DC Primary transfer DC bias positive Primary transfer DC bias negative Secondary transfer belt clutch CL4 Secondary transfer DC bias positive Secondary transfer DC bias negative ITD cleaning roller solenoid SL1 ITD cleaning CDC bias positive ITD cleaning DC bias negative ITD cleaning AC bias Power switch ON M CPU ON command Sequence STBY WMUP 50 C 0 5 3 5 9 4 9 4 9 4 10 0 10 0 9 6 2 7...

Page 63: ...5 C From when WMUP ends to when the PRNT signal is received or from when LSTR ends to when the printer board receives the PRNT signal or the power switch is turned off Purpose To heat the fixing roller thereby putting the printer unit into standby state To control the fixing roller to the target temperature so that printing may start as soon as the PRNT signal is received Remarks During the period...

Page 64: ...Main motor M4 Registration clutch CL1 Pick up motor M5 Cassette pick up solenoid SL3 Feeding clutchV CL2 Drum motor M2 Developing rotary motor M1 Cartridge motor M3 Sequence STBY PRNT signal Print sequence command INTR PRNT LSTR STBY 160 C 165 C 60 60 4 3 1 6 4 3 4 3 3 5 1 0 4 7 4 7 4 7 3 5 1 0 1 6 4 3 1 8 2 3 2 5 1 0 0 2 1 8 1 1 0 3 CCW CCW CW 0 8 2 0 0 2 unit sec 10 0 min Copying temp Copying te...

Page 65: ...ndary transfer DC bias negative ITD cleaning roller solenoid DL1 ITD cleaning DC bias positive ITD cleaning DC bias negative ITD cleaning AC bias Separation static eliminating AC bias Fixing separation DC bias Horizontal sync signal TOP STBY INTR COPY LSTR STBY 0 8 2 5 2 5 1 0 2 2 1 0 B2 B1 Y1 Y2 M1 M2 C1 C2 2 2 2 2 2 2 2 2 2 2 2 2 1 7 1 0 1 1 2 0 2 0 6 7 13 4 5 0 5 3 6 8 5 0 2 0 0 9 4 7 1 2 3 7 2...

Page 66: ...starts to rotate to when paper is picked up once again and the main motor stops Purpose To stabilize the sensi tivity of the photosen sitive drum in prepa ration for printing Also to prepare for development by toner cartridges To form an image on the photosensitive drum based on VDO 0 through 7 from the video controller then to turn it into a visible image with toner and to transfer it onto the in...

Page 67: ...IC201 the M CPU IC202 causes the main motor drive signal MON to go 0 by way of the exten sion I O IC203 to rotate the main motor The main motor causes the main motor ready signal MRDY to go 0 when it reach es a specific speed The motor is switched to either of three speeds in response to combinations of main motor speed switch signals MSPED1 MSPED2 i e normal 1 4 speed transparency mode and 1 3 sp...

Page 68: ...main motor starts to rotate 3 2 MRDY goes 1 for 2 5 sec or more after MRDY has gone 0 once 4 1 Copy Start key ON command when making copies with the reader unit installed 2 Reader controller PCB when making copies with the reader unit installed 3 Indicates E010 on the control panel 4 Indicates E011 on the control panel CHAPTER 2 BASIC OPERATION 2 20 MSPED1 MSPED1 Normal mode normal rotation 0 0 Tr...

Page 69: ...TER 3 LASER EXPOSURE SYSTEM I OUTLINE 3 1 II LASER CONTROL CIRCUIT 3 3 A Outline 3 3 B Image Signal Processing 3 5 C Controlling the Laser Intensity 3 6 D Horizontal Sync Control 3 7 E Controlling the Laser Diode Emission 3 8 III LASER SCANNER MOTOR 3 9 A Controlling the Laser Scanner Motor 3 9 IV FAULT IN THE LASER SCANNER 3 11 V DISASSEMBLY ASSEMBLY 3 12 A Printer Unit External Covers 3 13 B Doo...

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Page 71: ...n troller PCB then they are converted into two sets of low voltage differential signals Note with suppressed radiation noise and are sent to the laser driver PCB CHAPTER 3 LASER EXPOSURE SYSTEM 3 1 DSYNC DTOP DVDO0 7 DVCLK DCMD DPRNT Printer board 1 BD mirror Scanner motor Collimating lens Cylindrical lens Imaging lens 6 facet mirror BD BSAMPLE BSAMPLE LENB BDATA BDATA SCMFG SCND DC controller PCB...

Page 72: ... shape on the surface of the photosensitive drum as the drum rotates at a specific speed and while at the same time as the laser beam scans its surface at a specific speed Note Low Voltage Differential Signal The machine s PWM modulation circuit is on the DC controller PCB requiring PWM modulated laser drive signals to move through a cable for turning on and off the laser If PWM modulated laser dr...

Page 73: ... the printer board 1 and the image mode switch sig nals VDATIN8 coming by way of the D CPU IC201 CHAPTER 3 LASER EXPOSURE SYSTEM 3 3 G A IC204 PD LD PWM IC IC208 PWMF1 LVDS IC IC209 VDATA UBLON 5V DATA SAMPLE IC206 BDO PCLK PCLK DC controller PCB BD PCB Laser driver PCB IC1001 IC1002 C1004 DTOP DLSYNC DPRNT DCMD DVDO0 7 DVCLK VDATIN8 BD VDATO 0 Å 7 BD BDATA BDATA BSAMPLE BSAMPLE LENB VDATIN0 7 D C...

Page 74: ...ver IC1001 on the laser driver PBC demodu lates these two sets of signals to generate laser drive signals DATA for the laser drive IC IC1002 When the APC sampling timing signal SAMPLE is 1 and the image enable signal LENB is 0 the laser drive IC turns on the laser diode in response to the laser drive signal DATA 1 Reader controller PCB when making prints with the reader unit installed CHAPTER 3 LA...

Page 75: ...e video data signals VDATO0 through 7 are turned into PWM demodulation signals VDATA PWM video data signals combined with PWMF1 signals selected image mode by the PWM IC IC208 they are then sent to the laser driver PCB of the laser scanner as two sets of laser drive signals BDATA BDATA by way of the LVDS IC IC209 When making full color copies the foregoing operations are performed for Y M C and BK...

Page 76: ...tage select ed in the laser drive circuit IC to control the laser current sent to the laser diode At the end of a specific period of time end of unblanking the SAMPLE signal goes 1 and the printer unit enters hold print mode Note 2 to end forcing the laser diode LD to emit light In response the laser drive IC converts the controlled laser light into a volt age for retention in a capacitor C1004 Th...

Page 77: ... to the DATA signals 3 Clear Mode When the LENB8 signal is 1 the C1004 is discharged without regard to DATA sig nals and SAMPLE signals D Horizontal Sync Control The optical path for the laser beam is equipped with a small fixing mirror BD mirror The laser beam reaching the scan start position during the unblanking period is reflect ed by the BD mirror and directed to the BD PCB inside the laser s...

Page 78: ...e of multifeeder pickup Figure 3 202 Note 1 The laser beam is capable of writing within the shaded area 2 T1 throng T3 differ according to paper size 3 If the paper size command from the printer board does not indicate a paper size when the multifeeder is used the printer unit assumes T3 is 12x18 5 maximum paper size in the absence of data The multifeeder tray is equipped with a paper width sensor...

Page 79: ...ith two control circuits controlling speed and discrepancies in phase to ultimately control the rotation of the laser scanner motor CHAPTER 3 LASER EXPOSURE SYSTEM 3 9 DC controller PCB GA IC204 Scanner motor 54 M BD D CPU IC201 PRNT SCNON VDWN VUP PLUP PLDWN 27 33 29 28 30 31 J211 2 J211 5 J901 3 J2 2 J211 7 J901 1 5 7 SCND SCMFG BD 20 2 C286 Speed control voltage generation circuit Lock detectio...

Page 80: ... motor reaches a specific revolution the GA switches from the SCMFG signal to the BD signal as the target of detection to start control of the laser scanner motor including phase control The GA adds the fine adjustment acceleration signal PLUP and the fine adjustment deceleration signal PLDWN to the rough adjustment signal and controls the fine adjustment signal PLUP PLDWN until the phases match b...

Page 81: ...f the VUP signal and the PLUP signal continue for 5 sec after the laser scanner motor starts to rotate during initial drive upon detection the laser scanner motor drive signal SCND is made to go 0 and at the same time charges are stored in the error memory capacitor C286 Once charges are stored in the capacitor the SCND signal will be cut off stopping the laser scanner motor drive See Note 3 1 Rea...

Page 82: ...mes with the screw used for the grounding wire and the varistor to ensure electrical continuity 6 Do not operate the machine with any of its parts removed unless otherwise men tioned 7 Do not throw a toner cartridge into fire It may explode 8 Keep any toner cartridge in a protective cover whenever it has been taken out of the printer unit for disassembly assembly work even for a short time 9 Remov...

Page 83: ...ight cover e Upper cover r Side cover t Rear cover y Upper left cover u Delivery assembly cover i Right cover o Multifeeder tray 0 Inside cover 1 1 Inside cover 2 2 Inside cover 3 3 Inside cover 4 Figure 3 501 Figure 3 502 CHAPTER 3 LASER EXPOSURE SYSTEM 3 13 w e t y i o q r u 0 1 2 3 Download free service manual at http printer1 blogspot com ...

Page 84: ... 3 504 3 Upper Cover 1 Remove the front right cover by fol lowing the steps on p 3 14 2 Open the left cover and loosen the two screws q Screws w Upper cover Figure 3 505 3 Open the right cover and loosen the two screws q Screws Figure 3 506 CHAPTER 3 LASER EXPOSURE SYSTEM 3 14 q w e r q q q w When mounting the front right cover to the printer unit be sure to check to make sure that the two claws u...

Page 85: ...ap and the four screws q Strap w Screws e Side cover Figure 3 508 4 Remove the seven screws and detach the side cover q Screws w Side cover Figure 3 509 CHAPTER 3 LASER EXPOSURE SYSTEM 3 15 q w q e w q w Put the connector w under the edge saddle of the printer unit when mount ing the upper cover Caution When mounting the upper cover to the printer unit check to make sure that the two claws q of th...

Page 86: ...the right cover 3 q Right cover 2 w Screw e Right cover 3 Figure 3 510 3 Remove the two screws q Rear cover w Screws Figure 3 511 4 Open the right cover and remove the three screws q Screws w Rear cover Figure 3 512 5 Lift the open close lever to open the fan cover q Open close lever w Fan cover Figure 3 513 CHAPTER 3 LASER EXPOSURE SYSTEM 3 16 q e w q w q w q w Download free service manual at htt...

Page 87: ... detach the rear cover together with the fan cover by sliding them up q Screws w Rear cover Figure 3 515 6 Left Cover 1 Open the left cover and remove the strap q Left cover w Strap Figure 3 516 2 Remove the two screws and detach the left cover q Screws w Left cover Figure 3 517 CHAPTER 3 LASER EXPOSURE SYSTEM 3 17 w q q w q w q q w Download free service manual at http printer1 blogspot com ...

Page 88: ...over slightly to detach its right then detach its left q Delivery cover Figure 3 519 8 Right Cover 1 Open the multifeeder tray 2 Open the right cover 3 Remove the screw and turn over the pre exposure LED assembly q Screw w Pre exposure LED assembly Figure 3 520 4 Disconnect the two connectors and detach the pre exposure LED assem bly q Connector w Pre exposure LED assembly Figure 3 521 CHAPTER 3 L...

Page 89: ... Multifeeder Tray 1 Open the multifeeder tray 2 Slide the sub tray of the multifeeder tray and disengage the two claws used to secure the tray in place q Claws Figure 3 524 3 Disconnect the connector and remove the multifeeder tray q Connector w Multifeeder tray Figure 3 525 CHAPTER 3 LASER EXPOSURE SYSTEM 3 19 q w q q w w q q When removing the pre exposure LED assembly take care not to apply exce...

Page 90: ...atch tray and remove the eight screws then detach the inside cover 1 q Toner catch tray w Screw e Inside cove 1 Figure 3 527 11 Inside Cover 2 1 Open the right cover 2 Remove the front cover according to the steps on p 3 14 3 Remove the upper cover by following the steps on p 3 14 4 Remove the screw and detach the releasing lever 1 q Screw w Releasing lever Figure 3 528 5 Remove the three screws a...

Page 91: ...ure 3 530 4 Remove the five screws and detach the inside cover 3 q Screws w Inside cover 3 Figure 3 531 13 Inside Cover 4 1 Remove the inside cover by following the steps on p 3 20 2 Remove the inside cover 3 by per forming steps 3 and 4 on p 320 3 Remove the screw and detach the jam removing knob q Screw w Jam removing screw Figure 3 532 4 Remove the four screws and detach the inside cover 4 q Sc...

Page 92: ...ver w For cover laser shutter e For right cover r For laser shutter Figure 3 534 2 Removing the Door Switch Actuator 1 Remove the front right cover by fol lowing the steps on p 3 14 2 Remove the screw from behind the front right cover and detach the door switch actuator 4 pc 3 Using the Door Switch Actuator a Front Cover 1 Open the front cover 2 Insert the door switch actuator as shown Figure 3 53...

Page 93: ...2 Insert the door switch actuator as shown Figure 3 536 c Right Cover 1 Open the front cover 2 Insert the door switch actuator as shown Figure 3 537 CHAPTER 3 LASER EXPOSURE SYSTEM 3 23 Front shutter door switch Door switch actuator Front right cover door switch Door switch actuator Download free service manual at http printer1 blogspot com ...

Page 94: ... Inert the door switch actuator as shown Figure 3 538 CHAPTER 3 LASER EXPOSURE SYSTEM 3 24 Front shutter switch Door switch actuator When checking the operation with the right cover open be sure to place print paper over the density sensor as shown Caution Print paper Density sensor Download free service manual at http printer1 blogspot com ...

Page 95: ...sembly Figure 3 539 2 Removing from the Printer Unit 1 Remove the upper over by following the steps on p 3 14 2 Remove the four screws and discon nect the two connectors then detach the laser scanner assembly assembly q Screws w Connectors e Laser scanner assembly assembly Figure 3 540 CHAPTER 3 LASER EXPOSURE SYSTEM 3 25 w q q w e Do not disassemble the laser or scan ner assemblies They cannot be...

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Page 97: ...e Presence Absence of a Color Toner Cartridge 4 17 G Checking the Level of Black Toner and the Presence Absence of the Black Toner Cartridge 4 17 IV TRANSFER 4 18 A Outline 4 18 B Locking the Secondary Transfer Belt 4 19 C Controlling the ITD Cleaning Roller 4 20 V IMAGE STABILIZATION CORRECTION CONTROL 4 21 A Environmental Changes Correction Control 4 21 B Image Density Correction Control maxi mu...

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Page 99: ...transfer drum secondary pre transfer charging assembly secondary transfer belt separation static eliminator ITD cleaning roller Figure 4 101 CHAPTER 4 IMAGE FORMATION SYSTEM 4 1 ITD cleaning roller Developing rotary assembly Black toner cartridge Laser beam Developing block Latent static image formation block Transfer block Intermediate transfer drum Drum cartridge Secondary transfer belt Photosen...

Page 100: ...equence of operations is performed for C cyan toner to complete the development processes upon which the developing rotary is rotated At this time each color developing cylinder is stopped where it will not face the photosensitive drum in preparation for black development See Reference Since the black developing cylinder is positioned always to face the photosensitive drum mere application of a bi...

Page 101: ...roller transferred to the photosensitive drum and collected in the waste toner case inside the drum cartridge CHAPTER 4 IMAGE FORMATION SYSTEM 4 3 As shown in Figure 4 102 the black developing cylinder is found behind the roller developing cylinders when we think in terms of the direction of rotation of the photo sensitive drum If a color developing cylinder is in contact with the photosensitive d...

Page 102: ...board 1 Video interface PCB PRNT VDO 0 7 Drum cartridge Secondary transfer belt Separation static eliminator Pre exposure LED assembly Intermediate transfer drum Developing rotary assembly Color developing cylinder Color toner cartridge Separation static eliminating bias ITD cleaning bias Color developing bias Black developing bias Primary charging bias Secondary transfer charging bias Primary tra...

Page 103: ... assembly The life of the photosensitive drum on the other hand is monitored by the DC controller PCB and the findings are stored in the drum cartridge memory inside the drum cartridge The pre exposure LEDs are designed to expose the surface of the photosensitive drum at specific timing Figure 4 201 CHAPTER 4 IMAGE FORMATION SYSTEM 4 5 Light emitting assembly Light receiving assembly Detecting win...

Page 104: ...drum cartridge The timing at which the DC controller PCB reads and writes data stored in the RAM area of the drum cartridge is as follows Reading When the power switch is turned on When the cover is closed Writing When the power is turned off When the cover is opened At the end of printing in the case of continuous printing at the end of continuous printing or at the end of jam removal The copier ...

Page 105: ...rtridge memory MDO1 MDI1 MSK1 MSC1 OPCSNS MDO1 drum cartridge memory data output signal MDI1 drum cartridge memory data input signal MSK1 drum cartridge memory serial lock signal MSC1 cartridge memory select signal OPCSNS drum cartridge detection signal If you have replaced the drum cartridge be sure to execute auto gradation correction control in user mode Caution Download free service manual at ...

Page 106: ...controller PCB however starts to count imaging pages and will identify the end of the life of the photosensitive drum when the count reaches a specific value upon which it will stop the copier and communicates the fact to the printer board 1 1 Reader controller PCB when making prints with the reader unit installed Reference Service mode DISPLAY 0 normal 1 end of life warning 1 2 end of life warnin...

Page 107: ... the fact as a waste toner full warning condition and communicates it to the printer board1 It also writes the data to the drum cartridge mem ory The copier remains capable of making copies after the warning but the DC controller PCB starts counting the prints made since the warning has been issued it will identify a waste toner full condition when the count reaches a specific value and will stop ...

Page 108: ... photosensitive drum during development of black toner all color toner cartridges are moved away so that they will not face the photosensitive drum The color developing cylinder and the black developing cylinder are rotated by the cartridge motor M3 The developing assembly is equipped with four sensors each serving to detect the position of the developing rotary position PS3 color toner cartridge ...

Page 109: ...nal e color toner cartridge detection signal r black toner cartridge detection signal t developing rotary stopper signal y developing rotary stopper releasing signal u developing rotary motor drive signal i black toner cartridge level detection signal o cartridge motor drive signal 0 developing rotary position detection signal Intermediate transfer drum DC controller PCB PS3 Developing rotary moto...

Page 110: ...ition flag for each color 3 pc and deceleration flags 4 pc The stop position flag 3 pc for each color cartridge also serves as the cartridge removal deceleration flag When PS3 detects a flag the developing rotary position detection signal DEVHP goes 1 The DC controller PCB finds out the home position flag with reference to the time at which DEVHP goes 1 and the position of the stop position flag a...

Page 111: ... to the printer board 1 to stop the machine 1 PS3 does not detect the home position flag 2 PS3 detects an error between rotation position flags 3 PS3 cannot detect a flag width different from the stop position flag 1 Reader controller PCB when making prints with the reader unit installed Reference E021 fault in the developing rotary assembly CHAPTER 4 IMAGE FORMATION SYSTEM 4 13 Download free serv...

Page 112: ...he developing rotary stopper release signal RLSROT to go 1 so that the stopper lever is pulled back to release the developing rotary D Detecting the Absence of the Toner Cartridges To prevent the absence of a color toner cartridge the machine is equipped with a car tridge releasing lever sensor This sensor is a reflection type sensor consisting of a light emitting section and a light receiving sec...

Page 113: ... FORMATION SYSTEM 4 15 Developing rotary stopper solenoid SL5 Stopper lever Toner cartridge cover PS1902 Cartridge releasing lever sensor Cartridge releasing lever Color cartridge DC controller PCB Sub relay PCB RLOCKS RLSROT STPROT Developing rotary assembly Download free service manual at http printer1 blogspot com ...

Page 114: ...ight guide Then as toner once again starts to cover the detecting window the DC controller PCB finds out the time that passes before the light is blocked When the period during which light moves through the cartridge is longer than a spe cific value the DC controller PCB identifies the condition as absence of color toner and communicates the fact to the printer board 1 The machine checks the level...

Page 115: ...n the power is turned on or when the various covers have been opened closed 1 Reader controller PCB when making prints with the reader unit installed G Checking the Level of Black Toner and the Presence Absence of the Black Toner Cartridge The level of black toner is checked by the antenna sensor inside the black toner car tridge The output of the toner antenna toner level detection signal is sent...

Page 116: ...condary transfer belt clutch CL4 turns on the secondary transfer belt is forced against the intermediate transfer drum When the ITD cleaning roller solenoid SL1 turns on on the other hand the ITD cleaning roller is forced against the intermediate transfer drum Figure 4 401 CHAPTER 4 IMAGE FORMATION SYSTEM 4 18 STRCLD CLNRON M4 M2 CL4 SL1 DC controller PCB Photosensitive drum cartridge photo sensit...

Page 117: ... assembly turning on the secondary transfer belt clutch CL4 driving the secondary transfer belt cam and pushing up the secondary transfer belt assembly As a result print paper is forced against the intermediate transfer drum and the toner is transferred for the intermediate transfer drum to the print paper When paper moves away and secondary transfer ends the DC controller CPB turns off the second...

Page 118: ...oid drive signal CLNRON to go 1 at the appropriate timing in response the ITD cleaning roller sole noid SL1 turns on the ITD cleaning roller cam starts to operate and the ITD cleaning roller moves against the intermediate transfer drum When secondary transfer ends and ITD cleaning is turned on the DC controller PCB turns off the ITD cleaning roller solenoid SL1 to move the ITD cleaning roller from...

Page 119: ...nmental changes correction control at the following timing Before starting image density correction control Every 30 min after the end of image density correction control B Image Density Correction Control maximum density con trol The DC controller PCB draws a density detection pattern for each color on the inter mediate transfer drum to suit the environmental conditions whose data is obtained as ...

Page 120: ...be closed and at the same time the black toner cartridge and the drum cartridge must be set inside for the presence of the drum cartridge to be recognized Otherwise density correction control is not performed C Image Gradation Correction Control requires a PS PCL Board The DC controller PCB draws a density detection pattern for each color on the inter mediate transfer drum using a developing bias ...

Page 121: ...e intensity feedback signal DENREF and is used to control the intensity of the LED to a specific level The light from the LED is also directed to the density detection pattern on the inter mediate transfer drum and the reflected light is directed to the photodiode 1 The density detection PCB forwards the density signals to the DC controller PCB as the toner density detection signal DNS The DC cont...

Page 122: ...ping cylinder Secondary pre transfer charging assembly Intermediate transfer drum ITD Primary charging roller High voltage PCB 1 Upper fixing roller High voltage PCB 2 ITD cleaning roller Color developing cylinder Secondary transfer belt Separation static eliminating assembly Black toner level detecting antenna Separation static eliminating high voltage PCB Download free service manual at http pri...

Page 123: ...ch the levels of the primary trans fer DC positive bias See Note Figure 4 602 Note The level of the primary transfer DC positive bias differs between mono color print ing and full color printing In the case of full color printing four color toners are deposited on the intermediate transfer drum for primary transfer as such the toner with negative charges increases for the second and subsequent col...

Page 124: ...y upper fixing roller Separation static elimination high voltage PCB paper after secondary transfer The DC controller PCB sets the various high voltage levels and pulse outputs of ref erence frequency and turns on and off the various high voltage loads B High Voltage PCB 1 The high voltage power supply PCB 1 consists of the following three circuits Figure 4 603 CHAPTER 4 IMAGE FORMATION SYSTEM 4 2...

Page 125: ...ry charging bias level control signal is used to switch the levels of the pri mary charging DC bias for image areas Figure 4 604 Note The primary charging DC bias level for image areas is varied in conjunction with the developing DC bias of each color according to the density adjustment command from the printer board 1 or based on the result of image density correction control p 4 21 1 Reader cont...

Page 126: ...color developing cylinder The color developing bias level control signal on the other hand is used to switch the levels of the color developing DC bias for image areas Figure 4 605 Note The color developing DC bias level for image areas is varied in response to the den sity command from the printer board 1 or based on the result of image density cor rection control p 4 21 1 Rear controller PCB whe...

Page 127: ...ack developing AC bias and the output of the antenna mounted inside the cartridge for output to the DC controller PCB as the black toner level detection signal The DC controller PCB checks the voltage of the black toner level detection signal to find out the level of toner when the black developing AC bias is applied to the black devel oping cylinder Figure 4 606 Note The black developing DC bias ...

Page 128: ...ltage PCB 2 DC controller PCB Secondary transfer bias generation circuit ITD cleaning bias generation circuit Fixing separation bias generation circuit Secondary pre transfer charging assembly Intermediate transfer drum Secondary transfer belt Separation static eliminating assembly Upper fixing roller Secondary pre transfer charging bias generation circuit Primary transfer bias generation circuit ...

Page 129: ... DC positive bias drive signal is used to turn on and off the DC positive bias applied to the secondary transfer belt while the secondary DC nega tive bias drive signal is used to turn on and off the DC negative bias applied to the sec ondary transfer belt The secondary transfer bias level constant current control signal and the secondary transfer bias level constant voltage control signals are bi...

Page 130: ...d is used to switch the ITD cleaning AC bias level to suit the conditions of the environment Figure 4 610 4 Fixing Separation Bias Generation Circuit This circuit is controlled by the fixing separation DC bias drive signal from the DC con troller PCB and generates the fixing separation DC bias for application to the upper fix ing roller The voltage applied to the upper fixing roller is controlled ...

Page 131: ... signal and the separation static elimi nating AC bias drive signal The level of the biases both AC and DC is kept to a specif ic level The DC controller PCB generates the separation static eliminating AC bias drive sig nal to suit the type of paper and the conditions of the environment Figure 4 611 CHAPTER 4 IMAGE FORMATION SYSTEM 4 33 Separation static eliminating high voltage PCB DC controller ...

Page 132: ... DEVPHB to the rotary motor driver IC701 on the developing rotary motor PCB The rotary motor driver uses these signals to send drive signals RMAO RMAO RMBO RMBO to the developing rotary motor switching the motor between normal and low speed rotation modes The motor torque would fluctuate according to the speed of the motor requiring vari ation of the current level DC controller PCB J704 1 Developi...

Page 133: ...PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 4 IMAGE FORMATION SYSTEM 4 35 Table 4 701 Detection of home position or shift to cartridge removal position Other than above Rotation speed Low speed Normal Download free service manual at http printer1 blogspot com ...

Page 134: ...HA SLVPHA SLVPHB SLVPHB to rotate the developing cylinders of the color toner cartridges and the black toner cartridges The machine s drive gear arrangement would cause the developing cylinder of the color toner cartridges and the developing cylinder of the black toner cartridge to rotate in opposite directions if the cartridge motor was rotated in a single direction To avoid this IC5005 rotates t...

Page 135: ...HB DRMPHB to the drum motor driver IC210 IC210 uses these signals to supply the motor with drive signals DRMPHA DRM PHA DRMPHB DRMPHB thereby rotating the intermediate transfer drum and the photosensitive drum In transparency mode and thick paper mode the drum motor is rotated at low speed 1 4 for transparency mode 1 3 for thick paper mode to slow down the movement of paper through the fixing asse...

Page 136: ... screw used for the grounding wire and the varistor to ensure electrical continuity 6 Do not operate the machine with any of its parts removed unless otherwise men tioned 7 Do not throw a toner cartridge into fire It may explode 8 Keep any toner cartridge in a protective cover whenever it has been taken out of the copier for disassembly assembly work even for a short time 9 Remove the cartridge an...

Page 137: ... the sub transfer 2 6 Perform step 3 on p 4 58 to remove the sub transformer 1 7 Perform step 2 on p 4 60 to remove the color toner cartridge level sensor 8 Remove the eight screws and discon nect the connector then remove the drum drive assembly q Screws w Connector e Drum drive assembly Figure 4 801 q w e When the drum drive assembly is mounted the gear of the drive assem bly and the flags of th...

Page 138: ...se q Screws w Drive case Figure 4 802 2 Remove the drive gear shaft and remove the four screws then detach the drum motor q Screw w Drum motor Figure 4 803 3 Removing the Developing Rotary Position Sensor 1 Remove the screw and detach the developing rotary position sensor q Screw w Developing rotary position sensor Figure 4 804 w q q w q q w Download free service manual at http printer1 blogspot c...

Page 139: ...cover q Screws w Duct cover Figure 4 805 4 Remove the screw and detach the gear cover q Screw w Gear cover Figure 4 806 5 Remove the seven screws and detach the delivery drive assembly q Screws w Delivery drive assembly Figure 4 807 5 Removing the Main Drive Assembly 1 Perform the steps on p 5 35 to remove the pick up assembly 2 Remove the steps on p 3 21 to remove the inside covers 1 3 and 4 3 Pe...

Page 140: ... the releas ing lever 2 q E shaped top ring w Bushing e Shaft of the releasing lever 2 Figure 4 810 8 Remove the screw and disconnect the connector then remove the metal fixing and the secondary transfer belt clutch q Screw w Connector e Metal fixing r Secondary transfer belt clutch Figure 4 811 9 Remove the two screws and detach the main drive assembly q Screw w Main drive assembly Figure 4 812 w...

Page 141: ...e rear cover assembly 2 Remove the four screws and discon nect the connector then detach the cartridge motor q Screws w Connector e Cartridge motor Figure 4 814 8 Developing Rotary Motor 1 Perform the steps on p 3 14 to remove the upper cover 2 Perform the steps on p 3 16 to remove the rear cover 3 Remove the four screws and discon nect the two connectors on the DC controller PCB to detach then de...

Page 142: ... discon nect the connector then detach the heat discharge fan 1 FM1 together with its holder q Screws w Connector e Heat discharge fan 1 Figure 4 818 7 Remove the five screws and detach the rear cover stay q Screws w Rear cover stay Figure 4 819 8 Remove the screw and disconnect the connector then remove the cable clamp and detach the heat discharge fan 2 FM2 together with its holder q Screw w Con...

Page 143: ...Developing rotary motor Figure 4 821 B Charging Developing and Cleaning 1 Removing the Intermediate Transfer Drum 1 Open the front cover of the machine s printer unit while pushing the lock but ton on the releasing lever push down the lever in lower right direction until it stops thereby unlocking the interme diate transfer drum Figure 4 822 2 Open the right cover Figure 4 823 w e q q Download fre...

Page 144: ...nting a New Immediate Transfer Drum 1 Remove the protective sheet from the new intermediate transfer drum as shown Figure 4 825 Note Take care not to scratch the surface of the intermediate transfer drum Avoid touching it 2 Mount the intermediate transfer drum by reversing the steps used to remove it Figure 4 826 3 Shift back the bottom releasing lever of the front cover to close the cover Note Th...

Page 145: ...el surface Use paper under the drum 2 Do not clean the intermediate trans fer drum If absolutely necessary wipe its surface with a flannel cloth moistened with water and then dry wipe it 4 Color Cartridge and Print Image Faults Normally the color toner cartridges Y M C may be taken out and put back in easily If any of them cannot be moved at all because of a power fault or the like perform the fol...

Page 146: ...ckwise slowly q Toner cartridge cover w Color toner cartridge slot e Developing rotary assembly Figure 4 830 Note When rotating the developing rotary assembly do not hold the releasing lever Be sure to hold the metal area of the developing rotary assembly 6 When the slot of the color toner car tridge and the position of the color toner cartridge match shift the releas ing lever in the direction of...

Page 147: ...cessary use a flannel cloth Do not use lint free paper It will dam age the surface of the drum Further never use solvent q Protection cover w Photosensitive drum Figure 4 832 Note After replacing the drum cartridge be sure to execute auto gradation correc tion b Bk Toner Cartridge Do not open the shutter of the Bk toner cartridge unnecessarily Put the Bk toner cartridge in a protec tive bag whenev...

Page 148: ...ot to touch the belt 2 Do not clean the belt 3 When removing the secondary transfer belt assembly be sure to remove the separation static elimi nator in advance 4 After mounting a new secondary transfer belt assembly to the printer unit be sure to remove the protec tive sheet wrapped around the belt assembly 7 Removing the ITD Cleaning Holder Assembly 1 Perform the steps on p 3 20 and detach the i...

Page 149: ... in step 5 match the releasing knob found on the right end of the ITD cleaning holder assembly 7 Pull out both ends of the ITD cleaning holder assembly to take out the ITD cleaning holder assembly horizontally q ITD cleaning holder assembly Figure 4 840 8 Removing the ITD Cleaning Roller 1 Take out the ITD cleaning roller 2 Pull out the roller roll to the front and slide it to the right then detac...

Page 150: ...le pressing the releasing button shift the releasing lever 2 in the direc tion of the arrow q Releasing button w Releasing lever 2 Figure 4 842 3 Holding the releasing lever pull out the separation static eliminator hori zontally q Releasing lever w Separation static eliminator Figure 4 843 q w q w When replacing the separation static eliminator take care not to touch the charging wire Caution Dow...

Page 151: ... rear cover stay 3 Remove the two screws and discon nect the eight connectors then detach the main relay PCB q Screw w Connectors e Main relay PCB Figure 4 844 2 Removing the Sub Relay PCB 1 Perform the steps on p 3 20 to detach the inside cover 1 2 Remove the four screws and discon nect the five connectors then detach the sub relay PCB q Screws w Connectors e Sub relay PCB Figure 4 845 q q e w w ...

Page 152: ...r cover 2 Remove the four screws and discon nect the two connectors on the DC controller PCB then detach the video interface PCB Figure 4 846 3 Remove the two screws and the two hex nuts then detach the video inter face PCB from the metal plate Figure 4 847 Screws Screws Connector Connector Video Interface PCB Screw Screw Video Interface PCB Hex nuts Download free service manual at http printer1 b...

Page 153: ... the claw then slowly detach the DC controller PCB horizontally q Screws w Connectors e Claw r DC controller PCB Figure 4 848 q w w e r w w q 1 Connectors to the high voltage PCB 2 are found on the back of the DC controller PCB possibly sub jected to force during replacement Be sure to keep the DC controller PCB horizontally and take care dur ing replacement work 2 The red connector J204 on the DC...

Page 154: ... Screws w Connector e High voltage PCB 1 Figure 4 849 Note Do not touch the VR on the high volt age PCB 1 It is for the factory only 6 Removing the High Voltage PCB 2 1 Perform the steps on p 4 55 to remove the DC controller PCB 2 Remove the two screws disconnect the four connectors and remove the two cable clamps then detach the high voltage PCB 2 q Screws w Connectors e Cable clamps r High volta...

Page 155: ...he three connectors detach the separation static cleaning bias PCB q Screw w Connectors e Separation static eliminating bias PCB Figure 4 851 8 Removing the Developing Rotary Motor PCB 1 Perform the steps on p 3 16 to remove the rear cover 2 Remove the screw remove the three claws and disconnect the six connec tors then detach the developing rotary motor PCB q Screw w Claws e Connectors r Developi...

Page 156: ... the six claws and detach the holder cover q Claw w Holder cover Figure 4 853 3 Remove the two screws q Screws Figure 4 854 4 Disconnect the connector and detach the density detection PCB q Connector w Density detection PCB Figure 4 855 Note When replacing the density detection PCB take care not to touch the sensor assembly w q q q w q Download free service manual at http printer1 blogspot com ...

Page 157: ... 1 q Screws w Connector e Sub transformer 1 Figure 4 856 11 Removing the Sub Transformer 2 2 Perform steps 2 through 5 on p 4 43 to remove the rear cover and the shielding box 2 Remove the screw and disconnect the three connectors then detach the sub transformer 2 q Screws w Connectors e Sub transformer 2 Figure 4 857 12 Removing the Sub Transformer 3 1 Perform the steps on p 4 57 to remove the se...

Page 158: ...r cartridge sensor q Screw w Connector e Color toner cartridge sensor Figure 4 860 14 Removing the Color Toner Cartridge Level Sensor 1 Perform steps 2 through 6 on p 4 43 to remove the rear cover shielding box and heat discharge fan 1 2 Remove the screw and disconnect the connector then detach the color toner cartridge level sensor q Screw w Connector e Color toner cartridge level sensor Figure 4...

Page 159: ... disconnect the connector then detach the color toner cartridge releasing lever sensor q Screw w Connector e Color toner cartridge releasing lever sensor Figure 4 862 16 Removing the Temperature Humidity Sensor 1 Remove the cassette 1 2 2 Remove the three claws and discon nect the connector then detach the temperature humidity sensor q Claws w Connector e Temperature humidity sensor Figure 4 863 q...

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Page 161: ...ling the pick up motor 5 19 III FEEDING DELIVERY ASSEMBLY 5 21 A Outline 5 21 IV DUPLEXING UNIT 5 22 A Outline 5 22 B Reversing Operation 5 25 C Horizontal Registration Adjustment 5 26 D Re Pickup 5 28 V DETECTING JAMS 5 29 A Detecting Jams in the Printer Unit 5 29 B Detecting Jams in the Duplexing Unit 5 32 VI DISASSEMBLY ASSEMBLY 5 34 A Pick Up Assembly 5 35 B Delivery Assembly 5 39 C Feeding As...

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Page 163: ...kept in wait Then the paper is started once again so that its leading edge and the leading edge of the image on the intermediate transfer drum will match the paper is further moved through the transfer separation and fixing delivery assemblies all the way to the face down tray or the face up tray 1 Reader controller PCB when making prints with the reader unit installed Figure 5 101 CHAPTER 5 PICK ...

Page 164: ...ints with the reader unit installed Note 1 Paper is stopped once at the registration roller before re pickup and the DC con troller PCB checks the two sensors PS1801 PS1802 during this period The sensors are of a feedback type consisting of a light emitting section and a light receiving section If a transparency exists between the sections the light from the light emitting section passes through i...

Page 165: ...ck up motor is sent through the feeding roller gears to reach the cassette pick up roller The rotating cassette pick up roller moves down to the stack of paper and a single sheet of paper is picked up at the end of which the pick up roller moves to its initial position and stops When the pick up motor rotates clockwise the pick up roller of the cassette 1 feed ing roller 1 and separation roller ar...

Page 166: ...ick up roller Lifter Separa tion roller Separa tion roller Lifter CCW rotation CW rotation Feeding roller 1 Feeding roller 1 q Pick up motor drive signal w Cassette pick up solenoid drive signal PUPSLD e Feeding clutch drive signal FEEDCLD r Registration clutch drive signal REGCLD t Main motor drive signal MON M4 Main motor M5 Pick up motor SL3 Cassette pick up solenoid CL1 Registration clutch CL2...

Page 167: ...e switch q Cassette 1 last paper detection signal UCEDFS w Cassette 2 size detection signal e Cassette 1 size detection signal r Cassette 2 paper level detection signal 1 LPVS1 t Cassette 2 paper level detection signal 2 LPVS2 y Cassette 2 detection signal LDECKC u Cassette 2 paper absent detection signal LDECKS i Cassette 1 paper level detection signal 1 UPVS1 o Cassette 1 paper level detection s...

Page 168: ...he position of the lifter used to move up the stack of paper The lifter is equipped with a light blocking plate and the position of the lifter is checked when the light blocking plate blocks two sensors thereby enabling the identification of the level of paper In the case of the cassette 1 the outputs of the cassette 1 paper levels sensor 1 PS1205 and the cassette 1 paper level sensor 2 PS1206 are...

Page 169: ... UP FEEDING SYSTEM 5 7 about 430 or more about 210 to 490 about 60 to 270 about 120 or less Plain paper 64 g m2 PS1203 or PS1205 Lifter PS1204 or PS1206 Light blocking plate Pick up assembly Pick up PCB Sheets Paper level 1 2 3 4 1 2 3 4 Full High Medium Low Download free service manual at http printer1 blogspot com ...

Page 170: ... a lowering stack of paper The operation is driven by the main motor and is executed as in the fol lowing two cases Figure 5 205 CHAPTER 5 PICK UP FEEDING SYSTEM 5 8 Pick up roller main motor drive Feeding roller 1 Separation roller Cassette pick up cam Cassette pick up solenoid SL3 Lift up cam Lift up releasing arm Lift arm Pick up roller shaft fixing arm Lift up arm Lifter Pick up roller shaft G...

Page 171: ...cassette pick up solenoid SL3 turns on The drive moves through gears and rotates the cassette pick up cam to operate the lift arm Figure 5 206 CHAPTER 5 PICK UP FEEDING SYSTEM 5 9 Lifter gear Lift up cam Pick up roller shaft fixing arm Cassette pick up solenoid SL3 Cassette pick up cam Lift arm main motor drive Pick up roller shaft Download free service manual at http printer1 blogspot com ...

Page 172: ...e lift up cam is freed the lift up cam starts to rotate so that the lift up arm pushes up the lifter gear by a distance equivalent to a single tooth These opera tions are repeated to move up the cassette holding plate Figure 5 208 CHAPTER 5 PICK UP FEEDING SYSTEM 5 10 Pick up roller shaft fixing arm Pick up roller shaft Lift arm Lift up releasing arm Lift up arm Lifter gear Cassette holding plate ...

Page 173: ...o wait position by the force of a spring At the same time the pick up roller shaft fixing arm and the lift up releasing arm are driven to fix the lift up cam in place thereby stopping the lift up arm and ending the lift up operation Figure 5 209 CHAPTER 5 PICK UP FEEDING SYSTEM 5 11 Pick up roller shaft fixing arm Pick up roller shaft Lift arm Lifter gear Lift up cam Cassette holding plate Lift up...

Page 174: ...e pick up roller shaft to push the lift up releasing arm and the lift up cam to be freed Figure 5 210 CHAPTER 5 PICK UP FEEDING SYSTEM 5 12 Lift up arm Pick up roller shaft fixing arm Pick up roller shaft Lifter gear Lift up cam Cassette holding plate Lift up releasing arm Cassette pick up roller Paper Normal Operation Decrease in the Stack Pick up roller movement down Pick up roller shaft movemen...

Page 175: ... up roller comes into contact with the paper on the cassette holding plate the pick up roller shaft is moved up freeing the fixing arm to cause the lift up releasing arm to move up the pick up roller shaft to wait position by the force of a spring At the same time the pick up roller shaft fixing arm and the lift up releasing arm are driven to keep the lift up cam in place causing the lift up arm t...

Page 176: ...on of the feeding roller 1 from the moving paper normally forces the separation roller to rotate In the case of double feeding however the weak friction between two sheets of paper makes the rotating force going to the separation roller weak causing the rotation of the separation roller to move back the extra sheet Figure 5 211 CHAPTER 5 PICK UP FEEDING SYSTEM 5 14 Normal Double feeding Paper Pick...

Page 177: ...r and consists of a light emitting section and a light receiving section In the presence of paper the light from the light emitting section will be reflected by the paper to reach the light receiving sec tion In the absence of paper after the last sheet has been picked up on the other hand the light from the light emitting section will pass through the machine s inside not reach ing the light rece...

Page 178: ... roller by the holding plate gives up one sheet in response to the rotation of the pick up roller After the extra sheet if any has been removed by the work of the separation pad the paper is moved inside the printer unit The operations that follow are the same as in cassette pick up however the holding plate solenoid SL4 is additionally turned on immediately after the registration roller starts to...

Page 179: ...N e Registration paper detection signal REGS r Multifeeder tray paper detection signal MPTCLD t Multifeeder tray paper detection signal MPTPS y Holding plate position detection signal MPTLS u Holding tray solenoid drive signal MPTSLD i Multifeeder tray last sheet detection signal MPDFS o Multifeeder paper width detection signal MPTWID 0 Transparency detection signal 1 OHPSNS1 1 Transparency detect...

Page 180: ...ion of the last sheet detecting roll mounted to the multifeeder tray by the multifeeder tray last sheet sensor P19 If two or more sheets of paper exist on the multifeeder tray the last paper detecting roll will not rotate during pick up operation When the last sheet is picked up however the sheet will rotate the last sheet detecting roll causing the output of the last paper sensor to change betwee...

Page 181: ... motor with the drive signals FEDPHA FEDPHA FEDPHB FEDPHB to switch among three motor speeds for normal clockwise rotation normal counterclockwise rotation and high speed coun terclockwise rotation The motor torque varies in relation to rotation speed requiring variation of the current level and the printer unit uses combinations of FEDI0 and FEDI1 signals to find the appropriate current level for...

Page 182: ... the combinations of FEDI0 and FEDI1 signal states and speeds Table 5 202 CHAPTER 5 PICK UP FEEDING SYSTEM 5 20 Cassette 1 pick up normal CW Cassette 2 pick up 1st sheet normal CCW Cassette 2 pick up 2nd sheet and after high speed CCW Stationary FEDI0 L H L H FEDI1 L L H H Download free service manual at http printer1 blogspot com ...

Page 183: ...nter unit Paper on the face down tray is checked by the face down tray delivery sensor PS11 When the face down tray becomes full of paper the condition is identified by the face down tray full sensor PS10 Figure 5 301 CHAPTER 5 PICK UP FEEDING SYSTEM 5 21 q Face up solenoid drive signal FUSLD w Face down tray delivery paper signal FDOUT e Face down full detection signal FDFULL r Main motor drive s...

Page 184: ...xing unit stacking assembly The reversing roller rotates in response to the drive from the duplexing motor M8 The duplexing feeding roller 1 and the duplexing feeding roller 2 are rotated by the drive from the duplexing motor M8 controlled by the duplexing feeding clutch The duplexing motor M8 is a stepping motor and is controlled to rotate clockwise and counterclockwise by the microprocessor CPU ...

Page 185: ...lexing feeding roller 1 home position sensor PS24 Duplexing unit paper sensor PS25 Horizontal guide home position sensor PS26 Reversal paper sensor Fixing delivery roller M8 Fixing roller Feeding roller 2 SL6 Horizontal motor drive signal Reversing roller releasing solenoid drive signal PRRESLD Duplexing flapper solenoid drive signal DUPSLD Reversal paper detection signal SWBKS Horizontal registra...

Page 186: ...solenoid e Duplexing motor r Duplexing flapper solenoid t Duplexing feeding roller 1 home position sensor y Horizontal registration guide u Duplexing unit paper sensor i Duplexing feeding roller 1 o Duplexing feeding clutch 0 Horizontal registration guide home position sensor 1 Reversal paper sensor 2 Horizontal registration motor q w e r t y u i o 0 1 2 Download free service manual at http printe...

Page 187: ... switches the rotation of the duplexing motor M8 to clockwise direction to switch the paper path so that paper will be moved along the duplexing lower guide to the feeding roller side of the duplexing unit Figure 5 403 CHAPTER 5 PICK UP FEEDING SYSTEM 5 25 Note If paper is not 11x17 A3 B4 or LGL the duplexing driver PCB first drives the duplex ing motor M8 and then will switch its rotation to high...

Page 188: ...ion If not the duplexing driver PCB turns on the duplexing feeding clutch CL5 to rotate the duplexing feeding roller 1 after making sure that the roller is at its home position the PCB turns off the clutch to stop the roller A specific period of time after the reversing roller starts to rotate clockwise the duplexing driver PCB turns on the duplexing feeding clutch CL5 to rotate the duplexing feed...

Page 189: ...cy The duplexing driver PCB will identify a fault in the registration guide if the shift dis tance exceeds the value stored in advance i e the distance the horizontal registration guide moves from its home position communicating the fact to the printer board 1 by way of the DC controller PCB 1 Reader controller PCB when making prints with the reader unit installed Reference E055 A fault in the dri...

Page 190: ...xing driver PCB waits for a re pickup command from the DC controller PCB When the re pickup command is received from the DC controller PCB the duplexing driver PCB controls the speed of the duplexing motor M8 so that it matches the machine s feeding speed thereafter it turns on the duplexing feeding clutch CL5 to move the paper to the machine s feeding assembly Figure 5 405 CHAPTER 5 PICK UP FEEDI...

Page 191: ...cessor CPU in advance When the microprocessor identifies a jam it stops the ongoing printing operation and communicates the fact to the printer board 1 1 Reader controller PCB when making prints with the reader unit installed Figure 5 501 CHAPTER 5 PICK UP FEEDING SYSTEM 5 29 Face down delivery roller Face down tray Intermediate transfer drum Upper fixing roller Lower fixing roller Multifeeder pic...

Page 192: ...xing Delivery Delay Jam The CPU will identify a fixing delivery delay jam if the paper does not reach the fixing delivery sensor PS1903 within a specific period of time T after the registration drive signal TOPR has been generated T about 3 2 sec normal mode T about 12 8 sec transparency more T about 9 6 sec thick paper mode 5 Fixing Delivery Stationary Jam The CPU will identify a fixing delivery ...

Page 193: ... tion and the result of later detection is 15 mm or more If the difference is between 7 5 and 15 mm or 3 7 mm or more it will discharge the paper as a paper size mismatch 9 Non Default Size Feeding Jam If the transparency sensors 1 and 2 detect a transparency not of a specific size a non default size feeding jam is identified 10 Door Open Jam If any of the following sensors detects paper when the ...

Page 194: ...a jam it stops the ongoing duplexing feeding operation and at the same time communicates the fact to the printer board 1 1 Reader controller PCB when making prints with the reader unit installed 1 Reversing Assembly Delay Jam The duplexing driver PCB will identify a reversing assembly delay jam if the paper does not reach the reversal paper sensor PS26 within a specific time after the duplex ing f...

Page 195: ... delay jam if the paper does not reach the duplexing unit paper sensor PS24 within a specific period of time after the paper has moved past the reversal paper sensor PS26 figure 5 504 CHAPTER 5 PICK UP FEEDING SYSTEM 5 33 unit sec unit sec COPY Error Normal T1 T1 COPY Jam check Reversal paper sensor Duplexing motor Duplexing flapper solenoid drive signal T1 about 3 2 sec for A4 horizontal about 6 ...

Page 196: ...aristor to ensure electrical continuity 6 Do not operate the machine with any of its parts removed unless otherwise men tioned 7 Do not throw a toner cartridge into fire It may explode 8 Keep any toner cartridge in a protective cover whenever it has been taken out of the printer unit for disassembly assembly work even for a short time 9 Remove the cartridge and the intermediate transfer drum befor...

Page 197: ...ove the multifeeder pick up assembly 4 Perform the steps on p 5 40 to remove the registration roll assembly 5 Open the pick up cassette cover and detach the strap q Strap Figure 5 601 6 Remove the four screws and detach the pick up cassette cover q Screws w Pick up cassette cover Figure 5 602 7 Disconnect the connector q Connector w DC control PCB Figure 5 603 CHAPTER 5 PICK UP FEEDING SYSTEM 5 35...

Page 198: ...e sure to remove the pick up roller feeding roller and separation roller first to avoid soiling them with grease Further take care not to soil the paper feeding guide with grease 2 If you are replacing the gears shown in Figure 5 605 be sure to apply grease to prevent abnormal noise Use the appropriate grease SHV 2 and never use any that is not rec ommended To apply put a small amount size of a sm...

Page 199: ...RINTED IN JAPAN IMPRIME AU JAPON Figure 5 605 CHAPTER 5 PICK UP FEEDING SYSTEM 5 37 1 2 3 4 5 6 7 q 57T gear w Lift up cam e Pick up cam r 100T gear t Lift up cam lower y 31T 47T gear u 20T 41T gear Download free service manual at http printer1 blogspot com ...

Page 200: ...hen detach the pick up PCB q Connector w Screw e Claws r Pick up PCB Figure 5 607 3 Disengage the claw and detach the clutch fixing plate 4 Remove the E shaped stop ring and detach the feeding clutch q Claw w Clutch fixing plate e E shaped stop ring r Feeding clutch Figure 5 608 4 Removing the Cassette Pick Up Solenoid 1 Disconnect the connector 2 Remove the screw and detach the cassette pick up s...

Page 201: ... p 3 15 to remove the side cover 3 Perform the steps on p 3 17 to remove the left cover 4 Remove the two screws and discon nect the connector then detach the upper stay q Screws w Connector e Upper stay Figure 5 610 5 Remove the two screws and detach the delivery assembly q Screws w Delivery assembly Figure 5 611 CHAPTER 5 PICK UP FEEDING SYSTEM 5 39 e w q q w Download free service manual at http ...

Page 202: ...rews and detach the feeding assembly q Screws w Feeding assembly Figure 5 613 D Registration Roller Assembly 1 Removing the Registration Roller Assembly 1 Perform the steps on p 4 50 to remove the secondary transfer belt assembly 2 Perform step 3 on p 3 21 for the inside cover 4 to remove the jam removal knob 3 Disengage the two claws and detach the gear cover q Claws w Gear cover Figure 5 614 CHA...

Page 203: ...bly Figure 5 615 2 Removing the Registration Clutch 1 Remove the E shaped stop ring and detach the registration clutch q E shaped stop ring w Registration clutch Figure 5 616 3 Registration Lower Roller 1 Remove the spring E shaped stop ring and bushing q Spring w E shaped stop ring e Bushing Figure 5 617 CHAPTER 5 PICK UP FEEDING SYSTEM 5 41 r w e t q When replacing each part of the regis tration...

Page 204: ...oving the Multifeeder Pick Up Assembly 1 Perform the steps on p 3 14 to remove the front right cover 2 Perform the steps on p 3 16 to remove the rear cover 3 Open the right cover 4 Perform the steps on p 4 54 to remove the video interface PCB 5 Disconnect the four connectors q Connector w DC controller PCB Figure 5 619 6 Remove the screw and disengage the two claws then remove the gear cover q Scr...

Page 205: ...r cover q Screw w Rod holder cover Figure 5 622 9 Remove the E shaped stop ring q E shaped stop ring Figure 5 623 10 Turn the fixing hook in the direction of the arrow then lift the multifeeder pick up assembly together with the right cover slightly and slide it to the left to detach q Fixing hook w Multifeeder pick up assembly Figure 5 624 CHAPTER 5 PICK UP FEEDING SYSTEM 5 43 q w w q q q w Downl...

Page 206: ...pick up assembly Figure 5 625 F Multifeeder Tray Pick Up Roller 1 Removing the Multifeeder Tray Pick Up Roller 1 Open the right cover 2 While pushing the holding plate and the separation pads pull out the mul tifeeder pick up roller by holding the knob on the roller q Holding plate w Multifeeder separation pad e Multifeeder pick up roller Figure 5 626 CHAPTER 5 PICK UP FEEDING SYSTEM 5 44 q r e w ...

Page 207: ...oller 2 Remove the separation pad using a flat blade screwdriver q Separation pad Figure 5 627 H Cassette Pick UP Feeding and Separation Rollers 1 Removing the Cassette Pick Up Feeding and Separation Rollers 1 Slide out the cassette 1 and take it out while shifting up the blue lever Perform the same for the cassette 2 Figure 5 628 CHAPTER 5 PICK UP FEEDING SYSTEM 5 45 q Download free service manua...

Page 208: ...ler Figure 5 630 I PCBs 1 Removing the Pick Up PCB 1 Perform the steps on p 5 35 to remove the pick up assembly 2 Remove the screw disengage the two claws and disconnect the six connec tors then detach the pick up PCB q Screw w Claws e Connectors r Pick up PCB Figure 5 631 CHAPTER 5 PICK UP FEEDING SYSTEM 5 46 q q w w e e q w q e e r w e Note When replacing the cassette feeding roller or the casse...

Page 209: ...he cassette 1 last sheet sensor q Claws w Connector e Cassette 1 last sheet sensor Figure 5 632 3 Multifeeder Tray Paper Width Detection PCB 1 Perform the steps on p 3 19 to remove the multifeeder tray 2 While freeing the sub tray disengage the two claws to detach the sub tray q Sub tray w Claws Figure 5 633 CHAPTER 5 PICK UP FEEDING SYSTEM 5 47 e q w q q w Download free service manual at http pri...

Page 210: ...ltifeeder tray 2 Remove the screw and disconnect the connector then detach the multi feeder tray paper width detection PCB q Screw w Connector e Multifeeder tray paper width detection PCB Figure 5 634 CHAPTER 5 PICK UP FEEDING SYSTEM 5 48 q e w Download free service manual at http printer1 blogspot com ...

Page 211: ...rical and mechanical systems and timing at which each associated part is turned on CHAPTER 6 FIXING SYSTEM I OUTLINE 6 1 II FIXING CONTROL CIRCUIT 6 2 A Controlling the Fixing Temperature 6 2 B Preventing Rush Current 6 3 C Protecting the Fixing Assembly 6 4 D Detecting a Fault in the Fixing Assembly 6 4 III DISASSEMBLY ASSEMBLY 6 9 A Fixing Assembly 6 10 Download free service manual at http print...

Page 212: ...Download free service manual at http printer1 blogspot com ...

Page 213: ...and lower fixing rollers and past the fixing delivery roller to the outside of the fixing assembly Paper coming out of the fixing assembly is detected by the fixing delivery sensor PS1903 Figure 6 101 CHAPTER 6 FIXING SYSTEM 6 1 q Fixing delivery paper detection signal FXOUTS w Main motor drive signal w q Upper fixing roller Lower fixing roller Fixing delivery roller DC controller PCB PS1903 PS190...

Page 214: ...oller PCB controls the fixing heater drive signal FXUON FXLON according to the voltage of the FXTHU and FXTHL signals and through the expansion I O IC203 so that the fixing temperature remains a specific value COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 6 FIXING SYSTEM 6 2 Power supply assembly DC controller PCB Fixing assembly FXUON FXLON Upper...

Page 215: ... power on to generate the rush current prevention drive signal FXUONS for the upper fixing heater and the rush current prevention drive signal FXLONS for the lower fixing heater to turn on the sub drive circuit for a specific period of time to suppress the current applied to the heaters CHAPTER 6 FIXING SYSTEM 6 3 Note Fixing Mode The printer unit sets the target temperature for the upper lower fi...

Page 216: ... following three 1 M CPU on the DC controller PCB 2 Fixing heater safety circuit in the power supply circuit 3 Fixing assembly error detection circuit in the power supply circuit Details follow 1 M PCU on the DC Controller PCB If the fixing assembly is abnormally heated or it fails to reach a specific temperature the M CUP uses the D CPU to stop the operation of the fixing heater and cut the relay...

Page 217: ...f an error high or low temperature is detected the M CPU uses the D CPU to store a fixing heater error in the error memory capacitor C259 Once this happens turn off the power once leave the printer unit alone for 30 min or more and turn on the power once again to reset the printer unit 2 Switching the Thermistor Sensitivity The machine s M PCU switches the thermistor sensitivity between low temper...

Page 218: ...e cut off Figure 6 202 CHAPTER 6 FIXING SYSTEM 6 6 Power supply DC control PCB Fixing assembly FXSTS FXENB FXRON FXUON FXLON ACTYP Upper fixing roller Lower fixing roller Fixing heater drive circuit 24V C2 RL101 Fixing heater safety circuit 12 10 2 14 5 6 IC203 Expansion I O IC202 IC201 M CPU D CPU BUS FXUONS FXLONS 60 30 31 30 21 22 23 24 20 97 96 18 19 5V 5V Q204 Q20 Q237 T101 FXTHU FXRON FXTHL ...

Page 219: ... Q111 of the fixing assembly error detection circuit turns off to turn off Q112 and thereby to turn off the relay RL101 cutting off the power to the upper fixing heater and the lower fixing heater 3 Fixing Assembly Error Detection Circuit in the power supply circuit This circuit is in the power supply and monitors the fixing assembly for an open con dition of the thermal switch and the fixing heat...

Page 220: ...as a fault in the fixing assembly The AC current to the upper lower fixing heater is checked in reference to the voltage induced at T101 The voltage occurring at T101 is monitored by pin No 10 of IC102 If the upper lower fixing heater has an open circuit or if the upper thermal switch opens AC cur rent stops flowing and the output of pin No 13 of IC102 goes 1 As a result the output of pin No 14 of...

Page 221: ...the varistor to ensure electrical continuity 6 Do not operate the machine with any of its parts removed unless otherwise men tioned 7 Do not throw a toner cartridge into fire It may explode 8 Keep any toner cartridge in a protective cover whenever it has been taken out of the printer unit for disassembly assembly work even for a short time 9 Remove the cartridge and the intermediate transfer drum ...

Page 222: ...iew q Fixing assembly locking lever w Upper thermistor e Upper fixing roller r Upper fixing heater t Upper thermal switch y Fixing assembly inlet guide u Lower fixing heater i Lower fixing heater o Lower thermistor 0 Lower thermal switch 1 Fixing assembly releasing lever 2 Lower separation guide 3 Upper separation guide Figure 6 301 CHAPTER 6 FIXING SYSTEM 6 10 q w e r t y u i 1 2 3 o 0 Download f...

Page 223: ...bly locking lever w Releasing lever e Fixing assembly Figure 6 302 3 Mounting a New Fixing Assembly 1 Prepare a new fixing assembly and detach the two spacers orange Figure 6 303 2 Place the fixing assembly on the guide as shown Figure 6 304 3 Push the fixing assembly until it butts against the rear end of the printer unit Figure 6 305 CHAPTER 6 FIXING SYSTEM 6 11 If the duplexing unit is mounted ...

Page 224: ...pper Thermal Switch 1 Disengage the two claws and remove the fixing cover 1 q Claws w Fixing cover 1 Figure 6 307 2 Remove the three screws and detach the upper thermal switch q Screws w Thermal switch Figure 6 308 5 Removing the Upper Thermistor 1 Perform step 1 on p 6 12 to remove the fixing cover 1 2 Remove the two screws and detach the fixing cover 2 q Screws w Fixing cover 2 Figure 6 309 CHAP...

Page 225: ... 5 Remove the screw and detach the upper thermistor q Screw w Upper thermistor Figure 6 312 6 Removing the Lower Thermal Switch 1 Shift down the jam removal lever and remove the E shaped stop ring and the spring then slide the lower sepa ration guide in the direction of the arrow to detach it from the lower sep aration guide q Jam removal lever w E shaped stop ring e Spring r Lower separation guid...

Page 226: ...er thermal switch q Screws w Lower thermal switch Figure 6 315 7 Removing the Lower Thermal Switch 1 Perform steps 1 through 6 on p 6 17 to remove the fixing assembly right cover 2 Disconnect the connector lack q Connector Figure 6 316 3 Disengage the three claws and dis connect the connector cover q Claws w Connector cover Figure 6 317 CHAPTER 6 FIXING SYSTEM 6 14 q w q w q q w Download free serv...

Page 227: ... Lower thermistor Figure 6 319 8 Removing the Upper Fixing Heater 1 Perform steps 1 on p 6 12 to remove the fixing cover 1 2 Remove the screw and detach the lead wire q Screw w Lead wire Figure 6 320 3 Using the contact extracting tool RY9 0099 remove the heater con tact from inside the connector q Connector w Heater contact Figure 6 321 CHAPTER 6 FIXING SYSTEM 6 15 q q w q w q w Download free ser...

Page 228: ...r heater slowly q Screw w Heater metal fixing e Upper heater Figure 6 323 9 Removing the Lower Fixing Heater 1 Perform step 1 on p 6 12 to remove the fixing cover 1 2 Remove the screw and detach the lead wire q Screw w Lead wire Figure 6 324 3 Using the contact extracting tool RY9 0099 pull out the heater con tact from inside the connector q Connector w Heater contact Figure 6 325 CHAPTER 6 FIXING...

Page 229: ...e steps on p 6 1 to remove the upper fixing heater 2 Perform steps 2 through 5 on p 6 12 to remove the upper thermistor 3 Perform steps 2 through 5 on p 6 16 to remove the lower fixing heater 4 Pull up the releasing lever to remove then slide the releasing lever in the direction of the arrow to detach q Screw w Releasing lever Figure 6 328 CHAPTER 6 FIXING SYSTEM 6 17 q w e w q e When securing the...

Page 230: ...e the two screws and detach the fixing assembly right cover q Screws w Fixing assembly right cover Figure 6 330 7 Remove the grounding ring then remove the C shaped stop ring q Grounding ring w C shaped stop ring Figure 6 331 8 Remove the gear then remove the bushing and the bearing q Gear w Bushing e Bearing Figure 6 332 CHAPTER 6 FIXING SYSTEM 6 18 e q w q w w q e w q Download free service manua...

Page 231: ... cover q Screws w Fixing assembly left cover Figure 6 334 11 Remove the two screws and detach the fixing assembly upper safety q Screws w Fixing assembly upper stay Figure 6 335 12 Remove the C shaped stop ring and remove the bushing and bearing then detach the fixing assembly roller q C shaped stop ring w Bushing e Bearing r Fixing assembly upper roller Figure 6 336 CHAPTER 6 FIXING SYSTEM 6 19 q...

Page 232: ...Bushing e Bearing Figure 6 337 3 Remove the grounding ring and remove the C shaped stop ring q Grounding ring w C shaped stop ring Figure 6 338 4 Remove the bushing and the bearing q Bushing w Bearing Figure 6 339 5 Remove the two screws and detach the two upper separation guides then detach the lower fixing roller q Screws w Upper separation guides e Lower fixing roller Figure 6 340 CHAPTER 6 FIX...

Page 233: ...trical and mechanical systems and timing at which each associated part is turned on CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS I CONTROL PANEL 7 1 A Outline 7 1 B Operations 7 1 II FANS 7 2 III POWER SUPPLY 7 4 A Power Supply 7 4 B Remote Switch 7 6 C Protective Mechanisms 7 7 D Power Save Mode 7 8 IV DISASSEMBLY ASSEMBLY 7 9 A Fans 7 10 B Power Supply Assembly 7 13 Download free service manual at h...

Page 234: ...Download free service manual at http printer1 blogspot com ...

Page 235: ...he buzzer Figure 7 101 B Operations The control panel uses a single line dual direction serial interface The ASIC on the printer board serves to exchange data between the control panel and the CPU The data to the LEDs LCD and buzzer on the control panel and the vari ous data occurring as a result of switch inputs are controlled by the FPI signal bi direc tional data CHAPTER 7 EXTERNALS AUXILIARY M...

Page 236: ...lters used by the fans orientation of the fans and error codes associated with the operation of the fans while Figure 7 102 shows the timing at which each fan is turned on Figure 7 201 COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 7 2 FM2 FM1 FM3 Download free service manual at http printer1 blogspot com ...

Page 237: ...BY COPY LSTR INTR Heat discharge fan 1 Heat discharge fan 2 Heat discharge fan 3 STBY 30 min approx high speed rotation low speed rotation Printer unit power switch ON Printer unit power switch OFF M CPU ON command Note 1 At the end of a printing run the heat discharge fan 3 FM3 stops once However the heat discharge fan 2 FM2 will stop 30 min after the printer unit power switch is turned off to pr...

Page 238: ...f power The DC controller PCB uses 5 V to generate the PSAVE and P5SAVE signal causing PSAVE to go 0 in response to a power save command thereby turning off the FET switch and ultimate ly cutting 24 UH At this time the sensors will also be deprived of power since P5SAVE is also used by the sensors 5 V is also used to generate the 5 R signal to supply the printer board with 5 V power The low voltag...

Page 239: ...1 PSAVE Pick up PCB 24VB 24VAR 24VB 24UH 24UH 24UH 24UH 24UH 5VS P5SAVE P5SAVE P5SAVE Sensor Sensor Sensor P5SAVE P5SAVE 5V Laser driver sensor BD PCB 24UH Power supply 5R VR5ON D CPU 5V Printer board FET switch FET switch High voltage PCB2 separation static elimination high voltage PCB Solenoid clutch pick up motor High voltage PCB 1 Cartridge motor Heat discharge fan 1 heat discharge fan 2 Devel...

Page 240: ...EXTERNALS AUXILIARY MECHANISMS 7 6 DC controller CB101 24VB POFF DC DC converter Fuse Control IC Regulator IC 5 V overcurrent overvoltage F PCONT 5VS 5V 24UH PSAVE 24VAR Developing rotary PCB 24UH Sub relay PCB 24VB 24UH Pick up PCB P5SAVE 5V Laser driver sensor BD PCB 24VB P 5SAVE 24UH P5SAVE 24UH Printer board 5R Low voltage power supply AC Power supply Circuit breaker Noise filter Rectification...

Page 241: ...tive mechanism or the overvoltage protective mechanism turns on to cut of the DC voltage from the low voltage power supply circuit turn off the power switch disconnect the power cable and correct the fault on the load in question then connect the power cable and turn on the power switch The circuit is quipped with a circuit breaker CB101 and a fuse F1 which shut off the output voltage in response ...

Page 242: ...de from the printer mode causes the power supply mechanism to resume normal mode Figure 7 303 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 7 8 Cover switches Loads FET switch DC controller PCB Main relay PCB Sub relay PCB 24VB 24VAR 24UH PSAVE Pick up PCB 24VB 24VAR 24VB 24UH 24UH 24UH 24UH 24UH P5SAVE P5SAVE P5SAVE P5SAVE P5SAVE 5V 24UH GA Switching circuit PSAVE D CPU Cover switches IC201 IC204 24VB...

Page 243: ...tor to ensure electrical continuity 6 Do not operate the machine with any of its parts removed unless otherwise men tioned 7 Do not throw a toner cartridge into fire It may explode 8 Keep any toner cartridge in a protective cover whenever it has been taken out of the printer unit for disassembly assembly work even for a short time 9 Remove the cartridge and the intermediate transfer drum before di...

Page 244: ...e the two claws and remove the heat discharge fan 1 together with the thermistor holder q Claws wHeat discharge fan 1 Figure 7 403 5 Disengage the two claws and slide the holder cover to detach the ther mistor q Claws w Holder cover e Thermistor Figure 7 404 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 7 10 q q w q w q w e When replacing the fan take care not to touch the surface of the thermistor Cau...

Page 245: ...h 5 on p 3 18 to remove the right cover together with the fan duct 2 Disengage the two claws and detach the duct cover q Claws w Duct cover Figure 7 406 3 Slide the heat discharge fan 3 by slid ing it upward q Heat discharge fan 3 Figure 7 407 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 7 11 When mounting the heat discharge fan be sure that the logo of the manu facturer is toward the outside of the p...

Page 246: ...8 2 Remove the existing air filters Figure 7 409 3 Fit the new air filters 5 Replacing the Ozone Filter FM3 1 Open the right cover of the printer unit Figure 7 410 2 Slide the lid of the ozone filter holder Figure 7 411 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 7 12 Exhaust vent Air filters Ozone filter holder Slide Lid Download free service manual at http printer1 blogspot com ...

Page 247: ...ter Unit Power supply 1 Perform steps 2 through 5 on p 4 43 to remove the rear cover and the shielding box 2 Remove the two screws and detach the guide plate 3 Remove the five screws and discon nect the five connectors then detach the power supply assembly q Screws w Guide plate Figure 7 413 q Screws w Connectors e Power supply assembly Figure 7 414 CHAPTER 7 EXTERNALS AUXILIARY MECHANISMS 7 13 Oz...

Page 248: ...Download free service manual at http printer1 blogspot com ...

Page 249: ...ITE 8 1 II UNPACKING AND INSTALLATION 8 3 A Unpacking the Printer Unit 8 3 B Installing the Printer Unit 8 4 C Making Settings and Checking Images and Operations 8 11 C Selecting the Type of Message for the Printer Unit 8 14 III RELOCATING THE MACHINE 8 16 IV INSTALLING THE DUPLEXING UNIT 8 17 V INSTALLING THE VERTICAL FEED CASSETTE A4R LTRR B5R A5R 8 20 Download free service manual at http printe...

Page 250: ...Download free service manual at http printer1 blogspot com ...

Page 251: ...e shared with another electric device Keep in mind that fluctuations in voltage caused by such electric devices as refrigerators which repeat turning on and off will affect the output images 2 The temperature and the humidity of the site must be as indicated in Figure 8 101 Be sure to avoid areas near water faucets water boilers humidifiers and refrigerators Figure 8 101 Site Environment CHAPTER 8...

Page 252: ...r maintenance and other work Figure 8 102 Figure 8 103 w reader unit installed COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 8 INSTALLATION 8 2 2450mm 1850mm 1245 1mm 1070mm 100mm min Note The level of ozone generated by the machine will not affect the health of the individu als working around it Some individuals however may find the odor to be un...

Page 253: ...nter Unit COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 8 INSTALLATION 8 3 No 1 2 Work Unpack the printer unit Work in a group of four as shown lift the printer unit by placing hands under its bot tom and place it at the site of installation Remove all tape from the external covers of the printer unit Remarks The printer unit weighs about 83 kg Be...

Page 254: ...q While pushing the white button w open the green releasing lever e and remove the spacer r Shift he green releasing lever back to its ini tial position and close the front door Remarks Store away the orange stopper q for possible relocation of the printer unit in the future Caution 2 3 1 4 B Installing the Printer Unit Download free service manual at http printer1 blogspot com ...

Page 255: ...sembly in the direction of the arrow then pull out the pro tective film Close the printer unit delivery cover Connect the power plug Push the power switch found at the lower left of the printer unit to ON Open the front door and push up the blue releasing lever in the direction of the arrow Remarks Protective film Releasing lever Drive releasing lever Download free service manual at http printer1 ...

Page 256: ... pro tective bag Holding it as shown shake it five to six times to even out the toner inside Place the black toner cartridge on a level place while holding the cartridge pull out the sealing tape Holding the black toner cartridge as shown match it against the inside of the slot then push it fully to the end Remarks Download free service manual at http printer1 blogspot com ...

Page 257: ...easing lever w Take out the drum cartridge from the protec tive bag Shift up the handle of the drum cartridge then holding it as shown fit it in the drum slot Holding the protective cover as shown shift the handle back to its initial position then push the drum cartridge straight in with care Remarks 1 2 Match here to insert 1 2 Download free service manual at http printer1 blogspot com ...

Page 258: ...ut the blue releasing lever back to its initial position Take out the yellow color toner cartridge from its protective bag then holding it as shown shake it five to six times slowly to even out the toner inside it Remarks Green releasing lever Blue releasing lever Store away the protective cover for possible relocation of the machine in the future or when taking the drum car tridge out of the prin...

Page 259: ...l out the sealing tape Look in the color toner replacement cover to make sure that the color of the color marker on the turret is yellow If not press the turret button unit it is yellow Open the color toner replacement cover and shift the blue locking lever on the right of the turret to the right Remarks Color marker Color toner replacement cover Turret button Download free service manual at http ...

Page 260: ...he yellow toner cartridge toward the rear shift the locking lever back to its initial position to secure it in place Close the color toner replacement cover Perform the same steps for magenta and cyan to install each toner cartridge Press the turret button used in step 20 to change from yellow to magenta and press it once again to change to cyan Close the front door Remarks Download free service m...

Page 261: ...ER 8 INSTALLATION 8 11 No 1 2 Work Slide fully out the cassette 1 Remove the stopper and the protective sheet and the plastic bag containing paper size card and label from the inside of the cas sette Remarks 1 2 Plastic bag containing the paper size card and label Stopper Protective sheet Download free service manual at http printer1 blogspot com ...

Page 262: ...ht side Lift the front of the paper guide on the left end to remove then position it to suit the size of the paper Turn the locking lever of the paper guide on the right to unlocking position q then posi tion it to suit the size of the paper w Thereafter turn the locking lever to locking position to secure it in place Place paper against the paper guides on the left and the rear Remarks 1 2 Unlock...

Page 263: ...the paper size card in the slot found at the front left of the cassette Push the cassette fully inside Perform the same for the cassette 2 Check to make sure that the Add Paper indi cator on the control panel turns off If the user desires face up delivery select side tray delivery in user mode and mount the face up tray At time of shipment the center tray face down is selected Check the external c...

Page 264: ...Menu and key on the control panel of the printer unit turn on the printer unit At this time be sure to hold down the two keys until the message START SELF TEST appears Wait until the printer unit has run self diagno sis and indicates the message VERSION INFO Press the Menu key several times so that the message CHANGE DEFAULT LOCALE appears Press the Enter key When DEFAULT LOCALE has appeared selec...

Page 265: ... INSTALLATION 8 15 Work After making the selection press the Enter key The message LOCALE STORED will appear and remain for about 1 sec to be replaced by the message CHANGE DEFAULT LOCALE Turn off the printer unit and remove the PS PCL Board from the printer unit Detach the jumper head J27 of the PS PCL Board and install the PS PCL Board to the printer unit once again Turn on the printer unit Rema...

Page 266: ...ot rotating before starting the work COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON CHAPTER 8 INSTALLATION 8 16 No 1 2 3 Work Take out the toner cartridges Y M C Bk Obtain the drum cartridge cover MF4 0106 taken out when installing the drum cartridge Set it as shown and take out the drum car tridge while keeping it level Take out the orange fixing member u...

Page 267: ... printer assembly delivery cover Remarks Remove the tape Remove the stopper Remove the spacers IV INSTALLING THE DUPLEXING UNIT The areas near the fixing assembly and the delivery assembly behind the printer unit delivery cover are hot pos sibly burning the skin upon contact If the printer unit has been used turn it off and wait for a while for its inside to cool before starting the work Caution D...

Page 268: ... inserting it halfway put your thumbs on its both sides then push it fully inside Close the printer unit delivery cover Be sure to push with both hands until a click is heard indicating that it has locked into place Remarks Do not push on the metal plate at the back of the duplexing unit otherwise the plate may deform to cause pick up faults or jams Caution Download free service manual at http pri...

Page 269: ...unit push down the locking lever found at the lower right of the duplexing unit then slide it using both hands out of the printer unit Remarks Locking lever Do not push on the metal plate found at the back of the duplexing unit oth erwise the plate may deform to cause pick up faults or jams Caution Download free service manual at http printer1 blogspot com ...

Page 270: ...TALLATION 8 20 No 1 2 3 Work Unpack the vertical feed cassette Remove the stopper and the protective sheet from inside the vertical feed cassette Slide out the cassette 1 upper standard then while shifting up the blue lever with your finger lift the cassette 1 slightly to remove Remarks 2 1 Blue lever Download free service manual at http printer1 blogspot com ...

Page 271: ...printer unit to set the cassette to the printer unit Remarks Match the triangle markings on the printer unit and the triangle markings on the pick up cassette then place the left side of the cassette on the copier s guide The vertical feed cassette is designed for the holder for the cassette 1 only Be sure not to force it inside at an angle top bottom let right Caution Download free service manual...

Page 272: ...Download free service manual at http printer1 blogspot com ...

Page 273: ...PON This chapter discusses those of the machine s parts that require inspection and main tenance CHAPTER 9 MAINTENACE AND SERVICING I PERIODICALLY REPLACED PARTS 9 1 II CONSUMABLES AND DURABLES 9 1 III BASIC SERVICING CHART 9 2 Download free service manual at http printer1 blogspot com ...

Page 274: ...Download free service manual at http printer1 blogspot com ...

Page 275: ...opies 37 500 50 000 50 000 37 500 75 000 150 000 200 000 200 000 150 000 150 000 5 800 5 800 75 000 30 000 hr 30 000 hr 30 000 hr Remarks 100 120V 220 240V Must be replaced simultaneously Cassettes 1 and 2 are interchangeable Feeding roller and separation roller must be replaced simultaneously Must be replaced simultaneously with drum cartridge Reference only in terms of hours used See Note Parts ...

Page 276: ...mbly Remarks Use lint free paper or alcohol Use lint free paper Use lint free paper If the dirt cannot be removed use alcohol on the rubber area and solvent on other areas Do not remove the spring when cleaning a displaced spring will cause skew movement of paper or jams Correct the spring if displaced Use lint free paper Use a blower brush Use lint free paper or alcohol Remove any cake of toner U...

Page 277: ...roller assembly Description Use the density sensor cleaning brush attached to the printer unit to clean the detecting window of the sensor For the pre exposure LED assembly move the same brush in the direction of the arrow to clean each LED When replacing each drum cartridge clean the registration roller assembly Detecting window Cleaning brush Download free service manual at http printer1 blogspo...

Page 278: ...arging assembly in the direction of the arrow several times to clean the sec ondary pre transfer charging assembly Cleaning lever Intermediate transfer drum Marking Cleaning handle of the secondary pre transfer charging assembly Cleaning handle of the secondary pre transfer charging assembly Note After cleaning be sure to fit the cleaning lever in the static elim inator before mounting it back to ...

Page 279: ...9 5 Item Toner catch tray Description Disengage the two claws of the toner catch tray cover and slid out the toner catch tray Remove any cake of toner However if the cake of toner cannot be removed replace the toner catch tray Claws Toner catch cover Toner catch tray Download free service manual at http printer1 blogspot com ...

Page 280: ...Download free service manual at http printer1 blogspot com ...

Page 281: ...ROUBLESHOOTING MALFUNCTIONS 10 28 A Error Codes 10 29 B Faults Not Identified by Error Codes 10 45 IV TROUBLESHOOTING FEEDING PROBLEMS 10 58 A Paper Jams 10 58 B Faulty Feeding 10 66 V ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 10 69 A Sensors 10 70 B Thermistors Lamps and Heaters 10 72 C Clutches and Solenoids 10 74 D Fans and Motors 10 75 E PCBs 10 76 F Duplexing Unit 10 78 G Variable Resisto...

Page 282: ...2 3 4 Yes No NO NO NO YES Action Connect the plug Close the door and or cover properly The problem is not of the copying machine advise the user Check step 6 and onward Check Is the power plug connected to the outlet Are the front door and or delivery cover closed properly Is the rated voltage 100 VAC pre sent at the outlet Is the rated voltage present between J 1 1 and J 1 2 YES YES YES NO Result...

Page 283: ... steps under VIII C 4 Removing the DC Controller PCB in Chapter 4 to remove the DC controller PCB and mount the new DC controller PCB 9 Put back the parts that have been removed However it is better not to mount the rear cover of the printer unit until after checking to see that copier operates normal ly 10 Connect the power plug to the power outlet and enter the service mode once agein 11 Using t...

Page 284: ...DC LOAD to highlight then press the OK key 6 End service mode and turn off and then on the control panel power soft switch to load the data backed up on the reader controller PCB to the DC controller PCB all items of ADJUST IMG REG FEED ADJ HV TR 7 Check to make sure that settings are indicated under ADJUST IMG REG FEED ADJ HV TR if not perform the steps starting with step 5 If settings are still ...

Page 285: ...hile holding on the Menu key Enter Online key and Cancel key on the control panel at the same time until Start SELF TEST displays The panel displays will show Display to indicate that service mode has started after the printer unit checks itself 2 Using the Menu key on the control panel select SENSOR MONITOR 3 Press the ENTER key to select SENSOR MONITORING 4 Check to make sure that SENSOR MONITOR...

Page 286: ...ssembly before starting service mode Otherwise you could inadvertently touch operating parts Further you need to remove the following parts for respective sensors in view of the type of work to perform For PS1903 and PS5 the fixing assembly For PS11 the upper cover assembly For PS1207 the cassette 1 For PS1208 the cassette 2 With the Reader Unit Installed 1 Start service mode 2 Select COPIER I O D...

Page 287: ... Y 1 otherwise 0 PS5 Separation sensor J212 7 C4 display reading xx display position DC CON P001 bit 2 While in standby when the detecting lever is pushed down 0 not pushed down 1 No Name Meter probe Service Printer unit mode panel Reader unit panel Checks normal as described PS10 Face down tray full sensor J220 A3 While in standby when the light block ing plate is moved to PS10 1 PS11 Face down t...

Page 288: ...king plate to the sensor and put the duplexing unit back in When the light blocking plate is moved over the sensor 1 not moved over the sensor 0 No Name Meter probe Service Printer unit mode panel Reader unit panel Checks normal as described PS24 Duplexing unit paper sensor J2008 3 2 DC CON P002 bit 4 While in standby when paper is put over PS24 0 PS25 Horizontal registra tion guide home position ...

Page 289: ...e 1 sensor J210 6 While in standby when the cassette 1 is slid out 0 slid in 1 PS1203 Cassette 2 paper level sensor 2 J210 12 PS1204 Cassette 2 paper lev els sensor 1 J210 13 While in standby put one sheet of paper in the cassette 2 When the cassette is slid in J210 12 is 0 and J210 13 is 1 Put about 100 sheets of paper When the cassette is slid in J210 12 is 1 and J210 13 is 1 Put about 500 sheet...

Page 290: ...eets of paper When the cassette is slid in J210 14 is 1 and J210 15 is 1 Put about 500 sheets of paper When the cassette is slid in J210 14 is 0 and J210 15 is 0 No Name Meter probe Service Printer unit mode panel Reader unit panel Checks normal as described PS1208 Cassette 1 paper absent sensor J210 5 02 display reading yy display position DC CON P002 bit 1 While in standby when the cassette 1 co...

Page 291: ... PCB CHAPTER 10 TROUBLESHOOTING 10 9 No Name Meter probe Service Printer unit mode panel Reader unit panel Checks normal as described PS1903 Fixing delivery sen sor J207 12 DC CON P001 bit 3 While in standby the white lever over the fixing delivery sensor is pushed 1 not pushed 0 Note that this sensor is a photosensor Download free service manual at http printer1 blogspot com ...

Page 292: ...ecking the Originals Check the problem to find out whether it is caused by the original or the machine a Checking the Density of the Original A diazo original or an original with a high transparency can produce prints that can be mistakenly thought of as being foggy An original prepared in light pencil can produce prints that can be mistakenly thought of as being too light 3 Checking the Assemblie...

Page 293: ...um cartridge tends to have a high resistance causing poor contrast on prints e Condensation on the surface of the intermediate transfer drum can cause ITD clean ing faults If condensation is found dry wipe the parts or leave the machine powered for 10 to 20 min Opening a toner cartridge immediately after brining it in from a cold place will also cause condensation Instruct the user to make sure th...

Page 294: ...st print with the printer board installed turn on the power and press the switch when the machine has entered standby state Do not turn on the power while holding down the switch if the printer board is installed The display panel will indicate Service Call and the printer unit will enter an error state Be sure to turn on the power as normally done if the printer board is installed If the display ...

Page 295: ...he reader unit is installed you may use its control panel to select COPIER TEST PG TYPE to generate test prints 16 types i e thereby generating common color copier test prints 16 type CHAPTER 10 TROUBLESHOOTING 10 13 Yellow Magenta Cyan Black Output direction Download free service manual at http printer1 blogspot com ...

Page 296: ...ndoubtedly too dark The printer unit fails to generate images The printer unit generates a solid black or an image in solid color The face back of print paper is soiled The print has vertical lines sub scanning direction The print has white vertical lines sub scan ning direction The print has vertical lines main scanning direction The print has white vertical lines main scanning direction The prin...

Page 297: ...ed contact Replace the DC con troller PCB End Checks Make a test print in service mode TEST PG TYPE 14 and find the color that is light on the print Is the color on the test print Is the contact of the black toner car tridge for black developing bias or the contact for black developing bias of the printer unit soiled Open the front cover while black toner is being developed on the photosensitive d...

Page 298: ...bias output Secondary transfer belt assembly High voltage PCB 2 9 10 11 12 13 NO YES YES YES NO YES YES NO Go to step 10 Go to step 12 Clean the contact If it is deformed or dam aged replace the prob lem part Also check for a displaced contact End Go to step 12 Clean the contact If it is deformed or dam aged replace the prob lem part also check for a displaced contact End Replace the DC con trolle...

Page 299: ...e drum cartridge or the contact of the drum grounding wire for the printer unit soiled Is the contact of the drum cartridge for primary charging bias or the contact for primary charging of the printer unit soiled Replace the high voltage PCB 1 Is the problem corrected 3 The print is blank Cause Laser shutter High voltage PCB 1 High voltage PCB 1 no color black developing bias output Step 1 2 3 4 Y...

Page 300: ...en the connector J5003 1 24 UH on the high voltage PCB 1 and the nearby GND 24 V Replace the high voltage PCB 1 Is the problem corrected 4 The print is solid black solid color Cause Drum cartridge High voltage PCB 1 for pri mary charging bias Step 1 2 3 Yes No YES YES YES NO Action Clean the contact If it is deformed or dam aged replace the prob lem part Also check for a displaced contact Replace ...

Page 301: ... surface of the intermediate transfer drum with a moistened flannel cloth then dry wipe it with lint free paper Clean the contact If it is damaged replace the problem part Also check for a displaced contact Replace the PCB Checks Does the soiling have a specific interval as of the diameter of the cassette pick up roller registration roller lower fixing roller feeding roller 1 2 etc Is the secondar...

Page 302: ...clean ing roller locking unlocking SL21 solenoid Replace the DC con troller PCB Checks Is the drive gear or the like used to transmit locking unlocking drive of the ITD cleaning roller worn or cracked Is the cam used to lock unlock the ITD cleaning roller worn or cracked Are the connector J674 on the sub relay PCB and the connector J227 on the DC controller PCB connected securely Disconnect the co...

Page 303: ...ltifeeder pick up roller Registration roller Primary charging roller Photosensitive drum Developing cylinder Upper fixing roller Lower fixing roller ITD cleaning roller Diameter mm 24 24 24 38 30 16 14 62 21 46 46 18 Image interval mm 75 75 75 119 94 52 44 195 66 144 144 57 Soiling White spot Soiled back Faulty fixing Approximate Table 10 202 Development Download free service manual at http printe...

Page 304: ... Step 1 2 3 4 5 6 7 Yes No YES YES YES YES YES YES YES Action Replace the toner car tridge of the color Clean the fixing sepa ration upper guide Replace the photosen sitive drum cartridge Remove the foreign matter Replace the laser scan ner assembly Replace the intermedi ate transfer drum unit Replace the upper fix ing roller Checks Make a vertical stripe test print TYPE 10 Do the white bands line...

Page 305: ...ce the photosen sitive drum Replace the intermedi ate transfer drum unit Checks Are there scratches in the horizontal direction main scanning direction of the photosensitive drum Are there scratches in the horizontal direction main scanning direction of the intermediate transfer drum Cause Toner cartridge Toner level detection Step 1 2 Yes No YES YES NO Action Replace the problem cartridge See IV ...

Page 306: ...he photosen sitive drum cartridge Replace the problem part Replace the intermedi ate transfer drum unit Clean the contact If it is deformed or dam aged replace the prob lem part Also check for a displaced contact Replace the high volt age PCB 2 Replace the DC con troller PCB Checks Does any of the developing cylin ders of the toner cartridge have a fault Does the photosensitive drum or the primary...

Page 307: ...m securely Replace the DC con troller PCB Checks Is the drive gear between the drum cartridge and the drum motor or between the intermediate transfer drum and the drum motor worn cracked Are the connectors J1001 J2 and J901 of the laser scanner assembly connected securely Replace the laser scanner assembly Is the problem corrected Are the connectors J205 and J211 on the DC controller PCB connected...

Page 308: ...place the DC con troller PCB Checks Is the movement of the lever of the separation sensor poor Is the fixing assembly inlet guide soiled Or is the contact of the upper fixing roller for fixing separa tion bias or the contact for fixing separation bias of the printer unit soiled Are the connectors J5005 and J5006 on the high voltage PCB 2 connected securely Replace the high voltage PCB 2 Is the pro...

Page 309: ...static elimi nating bias PCB Is the problem cor rected Cause Connector Wiring Pre exposure LED assembly DC controller PCB Step 1 2 Yes No NO YES NO Action Connect them securely Replace the pre expo sure LED assembly Replace the DC con troller PCB Checks Are the connector J681 of the pre exposure LED assembly relay con nectors J74 and J18 connectors J645 and J647 on the main relay PCB and connector...

Page 310: ... a metal area of the printer unit before start ing the work to discharge the build up of static electricity thereby preventing dam age to the PCBs 3 When replacing the DC controller PCB see p 10 1 4 The machine s scanner laser assembly and the intermediate transfer drum ITD cannot be adjusted in the field Do not try to disassemble it The secondary pre transfer charging assembly inside the intermed...

Page 311: ...004 E009 E010 E011 E013 E019 E020 E021 E040 E054 E055 E066 E100 E110 Item E196 E197 E198 E240 E677 E678 E679 E805 E806 E807 E808 E810 E812 E813 E814 E545 E546 E903 Service Call Check Reader Others Page 10 30 10 31 10 31 10 32 10 32 10 32 10 33 10 33 10 34 10 35 10 36 10 37 10 38 10 38 10 39 Page 10 39 10 39 10 40 10 40 10 41 10 42 10 42 10 43 10 43 10 43 10 44 10 44 10 44 10 44 10 44 Download free...

Page 312: ...place the DC control PCB Checks Remove the fixing assembly and measure the resistance between the connectors J26F A4 FXTHU and J26F A3 GND on the fixing assem bly side Is it between 250 K and 600 K normal temperature Measure the resistance between the connectors J26F A2 FXTHL and J26F A1 GND on the fixing assem bly side Is it between 250 K and 600 K normal temperature With the fixing assembly remo...

Page 313: ...en circuit Lower fixing heater Lower thermal switch open circuit Connectors Power supply printer unit Step 1 2 3 4 Yes No NO NO NO YES NO Action Check the upper fixing heater and the upper thermal switch Replace the problem parts Check the lower fixing heater and the lower thermal switch Replace the problem parts Connect the connec tors securely End Replace the DC con troller PCB Checks With the f...

Page 314: ...assembly connect ed securely 4 E009 Cause Connector Main motor Step 1 2 Yes No NO YES NO Action Connect the connec tors securely Replace the main motor Replace the DC con troller PCB Checks Are the connector J219 on the DC controller PCB and the relay con nector J1 connected securely Does the voltage between the con nector J219 4 MON on the DC controller PCB and the connector J219 5 GND change fro...

Page 315: ...s J631 and J633 of the waste toner sensor and the relay connector J71 con nected securely Is the light emitting receiving sec tion of the waste toner detection block of the printer unit soiled Replace the waste toner detection block of the printer unit Is the prob lem corrected 7 E019 Cause Density sensor light emitting receiving sec tion Connector density detec tion PCB Density detec tion PCB Ste...

Page 316: ...rinter unit Close the toner cartridge cover and turn off then on the power Is the developing rotary stopper arm still holding the developing rotary assembly in place Are the connectors J704 and J706 on the developing rotary motor PCB and the connector J220 on the DC controller PCB connected securely Are the connector J43 of the devel oping rotary position sensor relay connector J42 and connector J...

Page 317: ...d J647 on the printer side main relay PCB connectors J671 and J672 on the sub relay PCB connector J1302 of the hold ing plate solenoid and connector J102 of the power supply connected securely Does the voltage between the con nectors J1301 2 24 UH and J1301 1 GND on the multifeeder tray PCB change from 0 to 24 V Is 24 UH present on the multifeed er tray PCB and the holding plate solenoid Disconnec...

Page 318: ...e sensor Replace the duplexing feeding clutch Replace the duplexing motor Replace the duplexing driver PCB Checks Is the duplexing feeding roller 1 home position sensor lever dam aged Is the drive gear of the duplexing feeding roller worn cracked Are the connectors J2003 J2004 and J2007 on the duplexing driver PCB connected securely Replace the duplexing feeding roller 1 home position sensor Is th...

Page 319: ...ce the lever Replace the worn cracked gear Connect the connec tors securely Replace the sensor Replace the horizontal registration motor Replace the duplexing driver PCB Checks Is the horizontal registration guide mounted correctly Is the horizontal registration guide home position sensor lever dam aged Is the horizontal registration guide drive gear worn cracked Are the connectors J2006 and J2005...

Page 320: ...066 Cause Connector laser driver signal line Connectors BD line Laser scanner unit Step 1 2 3 Yes No NO NO YES NO Action Connect the connec tors securely Connect the connec tors securely Replace the laser scanner unit Replace the DC con troller PCB Checks Are the connector J1001 on the laser driver PCB and connector J205 on the DC controller PCB con nected securely Are the connector J2 on the BD P...

Page 321: ...e connections secure and turn on the reader unit Replace the video interface PCB or the reader controller PCB of the reader unit Replace the PS PCL board Replace the DC con troller PCB Checks Is the interface cable used to con nect the reader unit and the printer unit connected securely Further are the reader unit power cord and the printer unit power cord connected securely If the printer unit is...

Page 322: ...701 on the developing rotary motor PCB con nectors J648 and J641 on the main relay PCB and J102 on the DC power supply connected securely Does the voltage between the con nectors J702 3 FAN1ON on the developing rotary motor PCB and J702 1 GND change to about 24 V Does the voltage between the con nectors J701 1 24 VB and J701 2 GND on the developing rotary motor PCB change to about 24 V immediately...

Page 323: ...r PCB and the connector J220 on the DC controller PCB connected Is the connector J701 on the devel oping rotary motor PCB connectors J648 and J641 on the main relay PCB and connector J102 on the DC power supply connected securely Does the voltage between the con nector J703 3 FAN2ON and J703 1 GND on the developing rotary motor PCB change to about 24 V immediately after the printer unit is turned ...

Page 324: ...or J227 on the DC controller PCB con nected securely Are the connectors J641 on the main relay PCB and J102 of the DC power supply connected securely Does the voltage between the con nectors J645 3 FAN3ON on the main relay PCB and J645 1 GND change to about 24 V immediately after the printer unit is turned on Does the voltage between the con nectors J641 1 24 VB and J641 4 GND change to 24 V immed...

Page 325: ...witching guide deformed Are the connector J209 on the DC controller PCB and relay connectors J47 and J48 connected securely Replace the drum cartridge Is the problem corrected 23 E810 Cause Fixing assem bly Connector fix ing assembly Connector DC controller PCB Step 1 2 3 Yes No NO NO NO YES Action Set the fixing assembly properly and turn off and then on the power Connect the connector properly C...

Page 326: ...Unit Service Manual Turn off and then on the printer unit If the problem is not corrected replace the print er board For details see the Service Manual for the PS PCL Board Cause Drum cartridge Step 1 Yes No YES NO Action End Replace the DC con troller PCB Checks Replace the drum cartridge Is the problem corrected 26 E814 27 E545 E546 28 E903 30 Others 29 SERVICE CALL CHECK READER Download free se...

Page 327: ...aper The multifeeder tray has no paper The multifeeder paper width is wrong Item The color toner cartridge is absent The color toner cartridge is not set properly The color toner cartridge has no toner The black toner cartridge is absent The black toner cartridge has no toner The waste toner case is full The duplexing unit fails to turn on The horizontal registration motor is faulty The duplexing ...

Page 328: ...he power supply of the printer unit and connect the probes to both terminals of the power sup ply switch Is the resistance 0 Ω when the printer unit power switch Note 2 is turn on and Ω when it is turned off 1 AC power is absent in the printer unit Note 1 Be sure to wait 60 sec after the circuit breaker has turned on before turning it back on Be sure to turn on the power switch and check the AC li...

Page 329: ...ect it to the power plug directly Is AC power pre sent Turn of the printer unit power switch1 in about 2 min turn it on Is the operation normal Turn off the printer unit power switch Note 1 and disconnect the con nector J204 from the DC controller PCB Connect the printer unit power plug to the power outlet directly and turn on the printer unit power switch Is DC power 5 V present at the connector ...

Page 330: ...nected securely Is there electrical continuity between the connectors J641 1 24 VB and J642 3 PMP on the main relay PCB when the right cover switch SW641 is turned on Is there electrical continuity between the connectors J671 1 PMP and J671 2 PFUFR on the sub relay PCB when the delivery cover front cover switch SW761 is turned on Disconnect the printer unit power plug from the reader unit and con ...

Page 331: ... of the power supply connected securely Is there electrical continuity between the connectors J641 1 24 VB and J642 3 PMP on the main relay PCB when the right cover switch SW641 is turned on Is there electrical continuity between the connectors J644 1 PBK and J644 2 PMP on the main relay PCB when the black toner cartridge detecting switch SW644 is turned on Is there electrical continuity between t...

Page 332: ...f the transparency sensor 1 2 connector J214 on the DC con troller PCB and relay connector J17 connected securely Replace the transparency sensor 1 2 PS1801 PS1802 Is the prob lem corrected 5 The transparency sensor 1 2 is faulty Cause Lever face down tray full sensor PS10 Face down tray full sensor PS10 Step 1 2 Yes No YES YES NO Action Replace or reposition the lever End Replace the DC con troll...

Page 333: ... Are the connectors J1601 on the cassette 1 2 size detection PCB and the connector J218 on the DC con troller PCB connected securely Replace the cassette 1 2 size detec tion PCB Is the problem corrected 7 The pick up paper size is wrong Cause Cassette 1 2 sensor lever 5V supply line Cassette 1 2 sensor Pick up PCB DC controller PCB Step 1 2 3 4 Yes No YES NO YES YES NO Action Replace the cassette ...

Page 334: ...aper level sensor Is the problem corrected Replace the pick up PCB Is the problem corrected 9 The cassette is empty Cause Multifeeder tray paper sensor lever 5V supply line Multifeeder tray power sensor Multifeeder tray PCB DC con troller PCB Step 1 2 3 4 Yes No YES NO YES YES NO Action Replace the multifeed er tray power sensor lever or the spring Position them correctly Connect the connec tors s...

Page 335: ...aper width sensor connected securely Is there a fault in any of the parts of the multifeeder unit Replace the multifeeder paper width sensor Is the problem corrected 11 The multifeeder paper width size is wrong Cause Connector Color toner sensor DC controller PCB Step 1 2 Yes No NO YES NO Action Connect the connec tors securely End Replace the DC con troller PCB Checks Are the connector J221 on th...

Page 336: ...c tor J207 on the DC controller PCB and connectors J675 and J676 on the sub relay PCB connected securely Replace the cartridge locking lever sensor Is the problem corrected 13 The color toner cartridge is not set properly Cause Connectors Color toner level sensor DC controller PCB Step 1 2 Yes No YES YES NO Action Connect the connec tors securely Replace the sensor Replace the DC con troller PCB C...

Page 337: ...r J227 on the DC controller PCB and connector J647 on the main relay PCB connected securely Is there electrical continuity between connectors J644 1 PBK and J644 2 PMP on the main relay PCB when the black toner cartridge switch SW644 is turned on 15 The black toner cartridge is absent Cause Connector black toner level detection signal Contact black toner cartridge for toner level detection Contact...

Page 338: ...reg istration motor M7 Duplexing driver PCB Step 1 2 Yes No NO YES NO Action Connect the connector securely Replace it Replace the duplexing driver PCB Checks Is the connector J2005 on the duplexing driver PCB connected securely Replace the horizontal registration motor Is the problem corrected 19 The horizontal registration motor is faulty Cause Drum cartridge Drum drive assembly Step 1 2 Yes No ...

Page 339: ... duplexing driver PCB Checks Is the connector J2009 on the duplexing driver PCB connected securely Disconnect the connector J2009 of the reversing roller releasing sole noid and measure the resistance between the connectors J2009 1 and J2009 2 on the harness side Is it about 50 Ω 21 The reversal roller releasing solenoid is faulty Cause Connector duplexing flap per solenoid drive signal line Duple...

Page 340: ...ltifeeder pick up assembly w Cassette pick up assembly e Transfer fixing assembly r Delivery assembly t Duplexing unit Figure 10 401 The troubleshooting procedures that follow are arranged according to location of jams Reference If the reader unit is installed you can check the location and the type of any jam last 50 in the copier in service mode Display JAM on its control panel 4 5 3 2 1 Downloa...

Page 341: ...k up assembly and check the drive gears Is there any damaged part Disconnect the connector J1303 of the multifeeder pick up clutch from the multifeeder tray PCB and mea sure the resistance between the connectors J1303 1 MPTCLD and J1303 2 24 UH on the harness side Is it about 160 Ω Is the multifeeder tray paper sensor lever or spring damaged deformed Are they positioned correctly Replace the multi...

Page 342: ...t the connector Replace the feeding clutch Replace the pick up PCB Replace the DC con troller PCB Checks Is the cassette pick up roller or the feeding roller 1 worn deformed Remove the pick up assembly and check the drive gears and springs Is there any damaged worn part Is any spring displaced Is the pick up paper sensor lever or spring damaged deformed Are they positioned correctly Replace the pi...

Page 343: ...oiled clean it Connect the connector Replace the registra tion clutch Replace the damaged or worn part Position the spring correctly Replace the sensor Replace the DC con troller PCB Checks Is the registration roller worn deformed or soiled Are the connectors J212 on the DC controller PCB and the connector J37 on the relay PCB connected securely Disconnect the connector J37 of the registration clu...

Page 344: ...lace the secondary transfer belt locking unlocking clutch Connect the connector securely End Replace the DC con troller PCB Checks Is the drive gear used to transmit locking unlocking drive of the sec ondary transfer belt worn or cracked Is the drive cam used to transmit locking unlocking drive of the sec ondary transfer belt worn or cracked Are the connectors J212 on the DC controller PCB and the...

Page 345: ...gear Clean the parts as nec essary Clean the upper fixing roller or the lower fixing roller Replace the rollers as necessary Replace the damaged or worn lever Position the spring correctly Replace the sensor If the fixing delivery roller is worn replace it Checks Does the leading edge of print paper reach the fixing roller Is the separation sensor lever or spring damaged or deformed Is the spring ...

Page 346: ...osition the sensor lever correctly Replace the sensor Position the flapper correctly If damaged replace it Replace the DC con troller PCB Checks Is the face up flapper soiled scratched or coated with toner Is the face up face down delivery roller worn Does the face up face down delivery roller rotate smoothly Is the face down tray delivery paper sensor lever damaged or deformed Is the sensor lever...

Page 347: ...he feeding guide If worn or deformed replace the roller Replace the worn or cracked gear Position the sensor lever correctly so that it moves smoothly If damaged or deformed replace it Replace the duplexing unit Checks Are the rollers inside the duplexing unit coated with paper lint or dust Is there foreign matter or burrs on the feeding guide Is the reversing roller or the duplex ing feeding roll...

Page 348: ...ce the separation roller Replace the spring Replace the torque lim iter Replace the multifeed er separation pad Replace the spring Checks Does the problem occur when the source is a cassette Is the separation roller worn or deformed Is the spring used to pull the sepa ration roller normal Is the torque limiter of the separa tion roller normal Is the surface of the multifeeder sep aration pad worn ...

Page 349: ... ing assembly At this time is the print paper wrinkled or its leading edge bent Is the fixing assembly inlet guide soiled Is the lower fixing roller soiled Is the lower fixing roller scratched deformed Is the upper fixing roller soiled Is the upper fixing roller scratched deformed Is the face down delivery roller or the face up delivery roller coated with foreign matter or dirt Is the paper guide ...

Page 350: ...o YES YES YES Action Clean the problem part Replace any worn or deformed roller Replace the scratched or deformed guide Checks Is the feeding roller assembly or the horizontal registration guide coated with paper lint or dust Is any of the rollers inside the duplexing unit worn or deformed Check the paper feeding path Is the paper guide scratched or deformed 4 Wrinkles duplexing mode Download free...

Page 351: ...999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON V ARRANGEMENTANDFUNCTIONSOFELECTRICAL PARTS CHAPTER 10 TROUBLESHOOTING 10 69 Download free service manual at http printer1 blogspot com ...

Page 352: ...E AU JAPON A Sensors Figure 10 501 CHAPTER 10 TROUBLESHOOTING 10 70 PS1207 PS19 PS17 PS3 PS1901C PS1201 PS1204 PS1203 PS1208 PS1202 PS30 PS11 PS5 PS1801 PS1 PS29 PS1302 PS1301 PS18 PS1902 PS1903 PS1206 PS1205 PS10 PS1802 Download free service manual at http printer1 blogspot com ...

Page 353: ...sor PS30 Upper left cover sensor PS1201 Cassette 2 sensor PS1202 Cassette 1 sensor PS1203 Cassette 2 paper level sensor 2 PS1204 Cassette 2 paper level sensor 1 PS1205 Cassette 1 paper level sensor 2 PS1206 Cassette 1 paper lever sensor 1 PS1207 Cassette 2 paper absent sensor PS1208 Cassette 1 paper absent sensor PS1301 Multifeeder tray paper sensor PS1302 Holding plate position sensor PS29 Casset...

Page 354: ...AU JAPON B Thermistors Lamps and Heaters Figure 10 502 CHAPTER 10 TROUBLESHOOTING 10 72 SW1604 SW1603 SW1602 SW1601 SW671 SW642 LED1 SW201 SW202 SW644 SW1602 SW1603 THU THL TPU SW673 SW672 SW1601 HU HL TPL SW1 SW641 SW1604 Download free service manual at http printer1 blogspot com ...

Page 355: ...SW201 Test print switch SW202 Reset switch SW641 Right cover switch SW642 Drum cartridge switch SW644 Black toner cartridge switch SW671 Delivery cover front cover switch SW672 Toner cartridge cover switch SW673 Turret button switch SW1601 Cassette 2 size detecting switch 1 SW1602 Cassette 2 size detecting switch 2 SW1603 Cassette 2 size detecting switch 3 SW1604 Cassette 2 size detecting switch 4...

Page 356: ...CL1 SL3 SL1 CL2 CL3 Name Clutch Solenoid Notation Description CL1 Registration clutch CL2 Feeding clutch CL3 Multifeeder pick up clutch CL4 Secondary transfer belt clutch SL1 ITD cleaning roller solenoid SL2 Face up solenoid SL3 Cassette pick up solenoid SL4 Holding plate solenoid SL5 Developing rotary stopper solenoid Symbol CL SL Download free service manual at http printer1 blogspot com ...

Page 357: ... TROUBLESHOOTING 10 75 FM2 M1 M6 M2 M4 M5 M3 FM1 FM3 Name Fan Motor Notation Description FM1 Heat discharge fan 1 FM2 Heat discharge fan 2 FM3 Heat discharge fan 3 M1 Developing rotary motor M2 Drum motor M3 Cartridge motor M4 Main motor M5 Pick up motor M6 Laser scanner motor Symbol M Download free service manual at http printer1 blogspot com ...

Page 358: ...NC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON E PCBs Figure 10 505 CHAPTER 10 TROUBLESHOOTING 10 76 3 q w e r t u 0 1 2 8 4 5 6 7 9 0 i o y 5 9 Download free service manual at http printer1 blogspot com ...

Page 359: ...ceiving section Detects the waste toner cartridge when full light emitting section Controls the primary charging bias black developing bias and color developing bias Controls the primary transfer bias secondary transfer bias secondary pre transfer charging bias fixing separation bias and ITD cleaning roller bias Relays data among PCBs Controls the load on the multifeeder pick up mechanism Controls...

Page 360: ...eeding clutch PS23 Duplexing feeding roller 1 home positioner PS24 Duplexing unit paper sensor PS25 Horizontal registration guide home position sensor PS26 Reversal paper sensor SL6 Duplexing flapper solenoid SL7 Reversing roller releasing solenoid M7 Horizontal registration motor M8 Duplexing motor Symbol CL SL M Name Duplexing driver PCB Description Controls various loads in the duplexing unit a...

Page 361: ...7 CHAPTER 10 TROUBLESHOOTING 10 79 Do not touch the VRs and check pins not discussed herein They are for the factory only and require special tools and high accuracy Caution 1 Some LEDs emit dim light even when they are off It is a normal condition and must be kept in mind 2 VRs that may be used in the field VRs that must not be used in the field Caution A1 B1 C1 A32 B32 C32 J2104 J2111 B20 A1 A50...

Page 362: ... B1 A1 C32 B32 A32 1 7 J221 1 J222 6 1 8 SW202 7 1 1 12 J207 J204 A11 J226 7 1 A1 B1 1 6 J229 JP201 C259 7 6 J231 J223 SW201 J208 J206 J201 B32 A32 B1 A1 J230 J202 Name Test print switch Reset switch Remarks For factory SW No SW201 SW202 If E001 or E003 occurs the error data may have been stored in the error memory capacitor C259 on the DC controller PCB Be sure to discharge the capacitor after re...

Page 363: ...OTING 10 81 Name Right cover switch Drum cartridge detecting switch SW No SW641 SW642 2 1 J644 4 J642 1 J643 6 1 5 1 J648 J645 3 1 J641 1 6 SW641 4 1 J647 SW642 J646 B11 A1 B1 A11 J671 2 1 J673 6 1 1 J676 4 SW671 SW673 J674 J675 6 1 2 1 Name Delivery cover front cover switch Turret button switch SW No SW671 SW672 Download free service manual at http printer1 blogspot com ...

Page 364: ...JAPAN IMPRIME AU JAPON 5 Cassette Size Detection PCB Figure 10 511 CHAPTER 10 TROUBLESHOOTING 10 82 J1601 5 1 SW1604 SW1603 SW1602 SW1601 Name Cassette detecting switch p 5 6 SW No SW1601 SW1602 SW1603 SW1604 Download free service manual at http printer1 blogspot com ...

Page 365: ...he printer unit checks itself B Menu Structure and Key Assignment There are following keys on the printer control panel Basic function of each key is also described Table 10 601 CHAPTER 10 TROUBLESHOOTING 10 83 If the reader unit is installed service mode must be started by operating on the con trol panel of the Reader Unit See the Reader Unit Service Manual Caution Name of the key Function in mai...

Page 366: ...ller PCB is mounted to the printer unit and the paper is turned on nor mally the data stored on the printer board will be lost If you are replacing the DC controller PCB be sure to write the various adjustment data in read memory mode to the RAM on the printer board and then write it to the EEPROM on the new DC controller PCB in write memory mode Figure 10 601 Figure 10 602 Caution Printer board P...

Page 367: ...SOR MONITOR TEST PAPER FEED READ MEMORY PARAMETER BIAS WRITE MEMORY No 1 2 3 4 5 6 7 8 Description Indicates the ROM version of the DC controller PCB DCON VERSION MC xx yy DC XX YY Indicates the version of the ROM which controls loads on the DC controller PCB mechanical workings XX YY Indicates the version of the ROM which control the communication between the video controller PS PCL PCB on the DC...

Page 368: ...king a decision 3 If multiple sensors are turned on at once the reading will be the sum of the results in hexadecimal notation 4 Execution sensor monitor mode can drive some major parts To avoid contact and therefore injuries be sure to remove the intermediate transfer drum various car tridges and secondary transfer belt assembly before starting service mode In view of the work remove the followin...

Page 369: ...eri od of time Remarks 1 Select DEV DRV 2 Using the or key select YES 3 Press the ENTER key to execute 1 Select MAIN DRV 2 Using the or key select YES 3 Press the ENTER key to execute Sub Menu DEV DRV MAIN DRV 1 If you want to execute test mode while keeping the door covers open use the door switch actuators to keep the door switches on 2 Do not put your hand or face inside when checking the opera...

Page 370: ...OTING 10 88 Description Before executing PAPER FEED mode selectthe source of paper cassette 1 cassette 2 multi feeder Before executing PAPER FEED mode select the destination face down delivery face up delivery Remarks 1 Select PAPER FEED 2 Using the or key select the source of paper 3 Press the ENTER key to execute 4 Using the or key select the destination 5 Press the ENTER key to execute Sub Menu...

Page 371: ...d pages of 2 page mode Use it to fine adjust the write start position sub scanning on the intermediate transfer drum for the Y pattern using M as reference 2nd and subsequent pages of 1 page mode and 3rd and subsequent pages of 2 page mode Use it to fine adjust the write start position sub scanning on the intermediate transfer drum for the Y pattern using C as reference 2nd and subsequent pages of...

Page 372: ...idity envi ronment Enable disable separation static elimination if brush like lines occur on some types of paper when printing a 2nd side in double sided mode using auto multifeeder mode in a high temperature humidity environment or when printing a 2nd side in double sided mode using auto multifeeder mode in a high temperature high humidity environment Use it to enable disable the fixing improveme...

Page 373: ...qual to the ribs on the feeding guide in the secondary transfer belt assembly Reference Note 1 The term 1st page means the first image formed on the intermediate transfer drum In 2nd page mode a 2nd page image is formed at the same time as such the term 1st page is used to mean the first and second images formed on the drum 2 The term 2nd page means the second image formed on the intermediate tran...

Page 374: ...djust the sec ondary transfer bias for single sided printing or first side printing of double sided printing on plain paper For a N N environment use it to adjust the sec ondary transfer bias for second side printing of double sided printing on plain paper For a H H environment use it to adjust the sec ondary transfer bias for second side printing of double sided printing on plain paper For a L L ...

Page 375: ... the message PRINT SERVICE PAGE X appears X being 1 though 5 corresponding to the number of the chart shown above then press the Enter key 6 See that the test page is printed B Test Pattern Table 10 701 CHAPTER 10 TROUBLESHOOTING 10 93 If you have started the machine as you would normally the above menu for service test page would not be indicated For displacement of registration use the test page...

Page 376: ...heck the gradation and the difference in density of each color YMCK c Fogging If the white area is foggy the photosensitive drum inside the drum cartridge or the laser system of the printer unit is likely to be faulty Figure 10 701 CHAPTER 10 TROUBLESHOOTING 10 94 Note The page consists of patches of Bk Y RGB M and C Cassette 2 is used as the source of paper The page consists of a single sheet Reg...

Page 377: ...e gradation of all colors YMCK RGB at a glance Figure 10 702 CHAPTER 10 TROUBLESHOOTING 10 95 Note The page consists of gradations of Bk B G R Y M and C Cassette 2 is used as the source of paper The page consists of a single sheet Regardless of the size of paper the patches are printed at the center Download free service manual at http printer1 blogspot com ...

Page 378: ...te lines occur at the same position in all colors the intermediate transfer drum or the secondary belt assemble of the printer nit is likely to be faulty If they occur at different positions or in one color the toner cartridge of the printer unit is likelty to be faulty d Uneven Intervals If uneven intervals occur suspect the following if at 66 mm intervals the developing cylinder if at about 52 m...

Page 379: ...ndary transfer is likely to be faulty b White Lines Caused during Development If white lines are found in the cyan area of the copy the cyan toner cartridge is likely to be faulty c Uneven Density between Left and Right If the right left density is uneven for all colors the drum cartridge secondary pre transfer charging assembly or secondary transfer belt assembly of the printer unit is likely to ...

Page 380: ...ontroller test chart to check the Controller board Figure 10 705 CHAPTER 10 TROUBLESHOOTING 10 98 Note Cassette 1 is used as the source of paper The page consists of a single sheet The page consists of a total 4 sheets The chart contains various objects for checks Download free service manual at http printer1 blogspot com ...

Page 381: ...tandby temperature from 20 C after the fixing heater has been turned on is longer than the reference time The fixing temperature during stand by or printing exceeds about 230 C The fixing assembly temperature drops below 120 C after it has reached the target value A check is made for an open circuit at the start of temperature control The AC current expected in the fix ing heater is absent The rat...

Page 382: ...ts a faulty or wrong rotation position flag width During multifeeder pick up the hold ing plate position sensor PS1302 does not detect the holding plate even when the DC controller PCB has generated the holding plate sole noid SL4 ON signal The duplexing feeding roller 1 home position sensor PS23 does not detect the home position of the duplexing feeding roller 1 when paper is being fed to the dup...

Page 383: ...r controller to the DC controller PCB after the DC controller PCB is sup plied with power The signals between the PS PCL board and the DC controller PCB or between the PS PCL board and the reader controller PCB cannot be exchanged for a specific time after the PS PCL board is supplied with power The bin flapper solenoid sensor PI12 does not detect solenoid oper ation even when the solenoid SL3 is ...

Page 384: ...ult in the upper lower fix ing heater The drum cartridge detecting switch does not turn on at power on or when the cover is opened closed The intermediate transfer drum ITD home position is not detected within a specific time about 10 sec Both the upper fixing roller tempera ture detection signal FXTHU and the lower fixing roller temperature detection signal FXTHL indicate 10 C or less A specific ...

Page 385: ...he DC controller PCB After removing the cause be sure to discharge the capacitor Short JP201 on the DC controller PCB to discharge C259 see p 10 80 4 The machine s laser scanner assembly and intermediate transfer drum unit are not designed for adjustment in the field Do not disassemble them However the sec ondary pre transfer charging assembly inside the intermediate transfer drum may be replaced ...

Page 386: ... FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON APPENDIX A GENERAL TIMING CHART A 1 B SIGNALS AND ABBREVIATIONS A 7 C GENERAL CIRCUIT DIAGRAM A 15 D SPECIAL TOOLS A 17 E SOLVENTS AND OILS A 18 Download free service manual at http printer1 blogspot com ...

Page 387: ...Download free service manual at http printer1 blogspot com ...

Page 388: ...unit sec 10 approx Flashing Standby temp High speed 165 160 C Ready to Print indicator Scanner motor Upper fixing heater HU Lower fixing heater HL Heat discharge fan FM1 Heat discharge fan FM2 Heat discharge fan FM3 Pre exposure LED Main motor M4 Registration clutch CL1 Pick up motor M5 Cassette pick up solenoid SL3 Feeding clutch CL2 Drum motor M2 Developing rotary motor M1 Cartridge motor M3 Pri...

Page 389: ...s DC Primary charging DC bias positive Primary transfer DC bias negative Secondary pre transfer charging bias AC Secondary pre transfer charging bias DC Secondary transfer belt clutch CL4 Secondary transfer DC bias positive Secondary transfer DC bias negative ITD cleaning roller solenoid SL1 ITD cleaning AC bias ITD cleaning DC bias positive ITD cleaning DC bias negative Separation static eliminat...

Page 390: ...mmand 10 0 min Printing temp Printing temp unit sec Ready to Print indicator Scanner motor Vertical sync signal TOP Re pick up signal TOPR Upper fixing heater HU Lower fixing heater HL Heat discharge fan FM1 Heat discharge fan FM2 Heat discharge fan FM3 Pre exposure LED Main motor M4 Registration clutch CL1 Pick up motor M5 Cassette pick up solenoid SL3 Feeding clutch CL2 Drum motor M2 Developing ...

Page 391: ...ias DC Primary transfer DC bias positive Primary transfer DC bias negative Secondary pre transfer bias AC Secondary pre transfer bias DC Secondary transfer belt clutch CL4 Secondary transfer DC bias positive Secondary transfer DC bias negative ITD cleaning roller solenoid SL1 ITD cleaning AC bias ITD cleaning DC bias positive ITD cleaning DC bias negative Separation static eliminating AC bias Sepa...

Page 392: ...Printing temp Printing temp Sequence unit sec Ready to Print indicator Scanner motor Vertical sync signal TOP Re pick up signal TOPR Upper fixing heater HU Lower fixing heater HL Heat discharge fan FM1 Heat discharge fan FM2 Heat discharge fan FM3 Pre exposure LED Main motor M4 Resignation clutch CL1 Pick up motor M5 Cassette pick up solenoid SL3 Feeding clutch CL2 Drum motor M2 Developing rotary ...

Page 393: ...DC bias negative ITD cleaning roller solenoid SL1 ITD cleaning AC bias ITD cleaning DC bias positive ITD cleaning DC bias negative Separation static eliminating AC bias Separation static eliminating DC bias Fixing separation DC bias 2 5 0 7 0 9 3 5 2 0 4 0 4 0 4 0 0 2 0 9 3 1 0 6 14 5 0 8 2 5 0 5 1 1 2 0 2 8 2 0 2 8 6 1 1 8 0 5 0 9 3 6 6 9 3 5 14 6 1 2 1 5 5 3 0 6 1 5 2 0 0 5 0 2 1 8 0 4 1 8 2 1 3...

Page 394: ...gnal status busy signal command busy signal data mode setting signal reserved print signal control panel signal 0 control panel signal 5 video clock signal image enable signal video signal video signal video signal video signal video signal video signal video signal video signal controller clock signal registration drive signal printer power ready signal vertical sync signal status change signal s...

Page 395: ...al secondary pre transfer charging DC bias drive signal secondary pre transfer charging AC bias drive signal IOT status signal IOT command signal for factory adjustment for factory adjustment for factor adjustment for factory adjustment laser emission main motor signal image enable signal APC sampling timing signal 1 APC sampling timing signal 2 PWM video data signal 1 PWm video data signal 2 mach...

Page 396: ...nal 2 cassette 2 paper level detection signal 1 cassette 1 paper level detection signal 2 cassette 1 paper level detection signal 1 pick up cassette cover detection signal horizontal sync signal scanner motor speed signal scanner motor drive signal secondary transfer belt clutch drive signal registration clutch drive signal separation detection signal registration paper detection signal multifeede...

Page 397: ... motor speed switch signal 1 main motor speed switch signal 2 main motor ready signal main motor drive signal fan motor 1 lock detection signal fan motor 2 lock detection signal face down tray full detection signal left cover detection signal developing rotary stopper releasing signal developing rotary motor current switch signal 1 developing rotary motor drive signal developing rotary motor drive...

Page 398: ... 3 front panel signal 2 front panel signal 1 front panel signal 0 black toner level detection signal black developing AC bias drive signal black developing DC bias drive signal color developing AC bias drive signal color developing DC bias drive signal toner cartridge motor current switch signal toner cartridge motor dive signal toner cartridge motor drive signal primary charging AC bias drive sig...

Page 399: ...CRGLED Name color cartridge detection signal fan motor 3 lock detection signal delivery cover front cover detection signal right cover detection signal black toner cartridge detection signal ITD cleaning roller clutch drive signal turret button switch signal drum cartridge switch signal toner cartridge cover switch signal fan motor 3 drive signal color cartridge LED drive signal Download free serv...

Page 400: ...r solenoid drive signal duplexing feeding clutch drive signal duplexing motor control signal duplexing motor control signal duplexing motor control signal duplexing motor control signal horizontal registration motor control signal horizontal registration motor control signal horizontal registration motor control signal horizontal registration motor control signal horizontal registration motor cont...

Page 401: ...COPYRIGHT 1999 CANON INC CANON 660 2100 REV 0 FEB 1999 PRINTED IN JAPAN IMPRIME AU JAPON APPENDIX A 14 Download free service manual at http printer1 blogspot com ...

Page 402: ...RMPHB DRMPHB M2 B1 B2 B3 B4 A1 A2 A3 A4 4 3 2 1 J26F J26M B4 B3 B2 B1 A4 A3 A2 A1 4 3 2 1 PS29 B1 B2 B3 B4 A1 A2 A3 A4 4 3 2 1 J27F J27M B4 B3 B2 B1 A4 A3 A2 A1 4 3 2 1 3 2 1 J63M J63F J54 3 2 1 1 2 3 6 5 4 3 2 1 J222 N C N C N C J26FB J26FA N C GND FXTYP GND FXTHL GND FXTHU J130 J122 HL J30 N C TPL HU TPU J129 J26MA 1 2 3 4 J126 J127 J128 J124 J123 J125 2 1 1 2 THU TH J121M J121F J120M J120F 1 2 ...

Page 403: ...J1901B P S PS1901B 7 6 5 4 3 2 1 SCND GND SCMFG 5V GND BD 5V J71M 1 2 3 J71F 3 2 1 J631 J70M 1 2 3 4 J70F 4 3 2 1 1 2 3 4 J621 1 2 3 4 J621 2 1 J633 J633 J40M 1 2 3 4 5 6 7 J40F 7 6 5 4 3 2 1 1 2 3 4 J901 1 2 3 4 J901 J221 J211 J207 1 2 3 J2 J2 1 2 3 1 2 3 4 5 6 7 8 9 10 J1001 3 2 1 1 2 3 4 5 6 7 8 9 10 P S PS621 5 4 3 2 1 J631 1 2 WTLED GND 1 2 3 4 5 6 7 8 5V IOTR GND IOTT TSEL4 TSEL3 TSEL2 TSEL1...

Page 404: ...hape Uses For detaching the contact of the upper lower heater of the fixing assembly For checking the operation of the printer unit during repairs found as a set of four behind the front right cover See p 5 22 For protecting the drum car tridge against light For securing the secondary transfer belt assembly in place when moving the printer unit Rank A Each service person is expected to carry on B ...

Page 405: ...Lubricant Lubricant Cleaning e g metal parts removing oil or toner Lubricating e g scanner rail Lubricating e g between gear and shaft Lubricating e g gears Lubricating e g drive parts Carbon hydrogen of fluorine family Alcohol Carbon hydrogen of chlorine family Mineral oil paraffin family Special oil Special sold lubri cating agent Lithium soap Mineral oil of petroleum family Silicone oil MEK CK ...

Page 406: ...Technical Support Department 3 Office Imaging Products Quality Assurance Center CANON INC Printed in Japan REVISION 0 FEB 1999 33130 7 5 1 Hakusan Torideshi Ibaraki 302 8501 Japan Download free service manual at http printer1 blogspot com ...

Page 407: ...PRINTED IN JAPAN IMPRIME AU JAPON 0299AB1 51 1 The publication is printed on 70 reprocessed paper Download free service manual at http printer1 blogspot com ...

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