REVISION 0 FEB.1999 COPYRIGHT © 1999 CANON INC. FY8-13FJ-000 CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
IMPORTANT THE INFORMATION CONTAINED HEREIN IS PUBLISHED BY CANON INC., 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. COPYRIGHT © 1999 CANON INC.
INTRODUCTION This Service Manual contains basic data and figures on the color printer needed to service the machine in the field. This machine consists of the following system units: 1. Reader unit 2. Editor 3. Original holder 4. Printer unit 5. Duplexing unit 6. R cassette 7. PS/PCL board* * Remains disabled when the printer unit is used in a copier mode. For the reader unit, duplexing unit, R cassette, and PS/PCL board, refer to their respective Service Manuals.
Chapter 10 Troubleshooting provides tables of maintenance/inspection, standards/adjustments, and problem identification (image fault/malfunction). Appendix contains a general timing chart and general circuit diagrams. The following rules apply throughout this Service Manual: 1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation.
FOREWORD System Configuration This printer unit is designed to accommodate the following accessories: • Upper 500 Sheet Cassette CS-82 A4R/A5R/B5R/LTRR*1 • Duplex Unit-A1 *1 • 1000-Sheet Paper Deck-D1 *2,3 • 2×500-Sheet Paper Deck-C1 *2,3 • 2000-Sheet Paper Deck-N1 *2,3 • ACC Controller-A1 *2,3 • ACC Interface Board-B1 *3 • ACC Interface Unit-B1 *3 (ACC controller-A1, ACC Interface Board-B1 and Plate) • Sorter-H1 (requires the Attachment Kit for STR-H1 if the printer unit is mounted to a Rack-A1) *2, *3 •
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CONTENTS CHAPTER 1 GENERAL DESCRIPTION I. II. FEATURES ..............................................1-1 SPECIFICATIONS....................................1-2 A. Printer Unit .........................................1-2 III. SAFETY OF LASER LIGHT.....................1-6 IV. NAMES OF PARTS..................................1-7 A. External View .....................................1-7 B. Cross Section...................................1-11 V. USING THE CONTROL PANEL.............1-13 VI. NOTES TO THE USER ....
CHAPTER 4 IMAGE FORMATION SYSTEM I. II. III. IV. OUTLINE..................................................4-1 A. Construction.......................................4-1 B. Operations..........................................4-2 FORMING LATENT STATIC IMAGES......4-5 A. Outline................................................4-5 B. Drum Cartridge Memory ....................4-6 C. Checking the Life of the Photosensitive Drum ..................................................4-8 D.
CHAPTER 6 FIXING SYSTEM I. II. OUTLINE..................................................6-1 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 III. D. Detecting a Fault in the Fixing Assembly............................................6-4 DISASSEMBLY/ASSEMBLY ....................6-9 A. Fixing Assembly ...............................
CHAPTER 10 TROUBLESHOOTING I. II. III. IV. V. STANDARDS AND ADJUSTMENTS .....10-1 A. Electrical System .............................10-1 TROUBLESHOOTING IMAGE FAULTS ................................................10-10 A. Making Initial Checks .....................10-10 B. Guide to Test Prints for the Printer Unit.................................................10-12 C. Troubleshooting Image Faults ........10-14 TROUBLESHOOTING MALFUNCTIONS.................................10-28 A. Error Codes..........
CHAPTER 1 GENERAL DESCRIPTION This chapter provides specifications of the machine, instructions on how to operate the machine, and an outline of reproduction process. I. II. FEATURES ..............................................1-1 SPECIFICATIONS....................................1-2 A. Printer Unit .........................................1-2 III. SAFETY OF LASER LIGHT.....................1-6 IV. NAMES OF PARTS..................................1-7 A. External View .....................................
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CHAPTER 1 GENERAL DESCRIPTION I. FEATURES 1. Oil-Free Fixing Assembly The fixing assembly is free of oil, allowing replacement without soiling hands. Further, since the fixing assembly is fixed in place without a screw, it may be removed by simply shifting the releasing lever. 2. Quick Replacement of Toner Cartridges The Y, M, and C toner cartridges are designed as a 3-color rotary development construction so that they, including the black toner cartridge, may be replaced by the user without effort.
CHAPTER 1 GENERAL DESCRIPTION II. SPECIFICATIONS A. Printer Unit 1. Type Body Photosensitive medium Desk-top page printer (console when installed to a paper deck) OPC drum (62-mm dia.) 2.
CHAPTER 1 GENERAL DESCRIPTION 3. Functions Wait time First print time Printing speed Cassette Multifeeder tray Duplexing unit Delivery tray Print size Cassette 1 Cassette 2 Multifeeder Print paper Cassette Multifeeder Double-sided printing Image margin Non-image width Resolution Main scanning direction Sub scanning direction COPYRIGHT © 1999 CANON INC. 5 min or less See Table 1-201. See Table 1-202.
CHAPTER 1 GENERAL DESCRIPTION 4. Others Operating environment Power supply (rated voltage ±10%) Weight (printer unit only) 1-4 See p. 8-1. Power supply Serial No. 120V (USA) NLQ xxxxx 120V (TWN) NLX xxxxx 230V (KOR) PLC xxxxx 230V (Others) PLF xxxxx 230V (CA) 230V (UK) ULL xxxxx 230V (FRN) 230V (GER) 230V (AMS) 230V (ITA) 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.
CHAPTER 1 GENERAL DESCRIPTION (unit: sec or less)* 4-color Plain paper Thick paper Transparency 34 50 57 A4/LTR A4/LTR A4/LTR Mono-color (YMCK) 18 35 41 Table 1-201 First Print Time *A4, Direct, cassette 1, face-up delivery, no pre-scanning if face-down delivery, add 3 sec for plain paper, 6 sec for thick paper, and 7 sec for transparency.
CHAPTER 1 GENERAL DESCRIPTION III. SAFETY OF LASER LIGHT Radiation of laser light can be hazardous to human beings. To ensure safety, the machine’s laser scanning system is sealed inside a protective housing and external covers, preventing leakage of laser light to the outside so that the user cannot be exposed to the machine’s laser light as long as the printer unit is used normally. The printer unit is certified as a Class I product under 1040.
CHAPTER 1 GENERAL DESCRIPTION IV. NAMES OF PARTS A. • External View Front View q w e r t r Cassette 1 t Cassette 2 q Face-down tray w Front cover e Face-up tray Figure 1-401 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 1 GENERAL DESCRIPTION q !1 w e r !0 t y !2 u o i q w e r t y Black toner cartridge slot Exhaust vent Right cover Multifeeder Pick-up cassette cover Top releasing lever u i o !0 !1 !2 Bottom releasing lever Toner cartridge color check window Color cartridge replacement turret button Color cartridge cover Front right cover Printer unit power switch Figure 1-402 1-8 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 1 GENERAL DESCRIPTION • Back q y w t e r 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 Figure 1-403 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 1 GENERAL DESCRIPTION • Duplexing Unit w q e r q w e r Horizontal registration guide Pick-up guide plate Duplexing feeding roller 1 Duplexing releasing lever Figure 1-404 1-10 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 1 GENERAL DESCRIPTION B.
CHAPTER 1 GENERAL DESCRIPTION • Duplexing Unit q w y e t q w e r t y r Reversing roller releasing plate Reversal paper sensor Re-pick up sensor lever Duplexing feeding roller 2 Duplexing feeding roller 1 Reversing roller Figure 1-406 1-12 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 1 GENERAL DESCRIPTION V. USING THE CONTROL PANEL The control panel on the top of the printer enables you to set options and view the status of the printer and print jobs. For details, see the PS/PCL Board Service Manual. Caution: 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. t e y Cancel Enter/Online Message Menu q COPYRIGHT © 1999 CANON INC.
CHAPTER 1 GENERAL DESCRIPTION q Name Display window w Down arrow button e Up arrow button r Right arrow button t Left arrow button y Cancel button u Menu button/LED i Enter/Online button/LED o Message LED 1-14 Operation/function The LCD window on the control panel displays status messages and a graphical representation of the printer. In a fixed-length list, takes you to the next item in the list. When entering numbers or text, increments to the previous number or character.
CHAPTER 1 GENERAL DESCRIPTION VI. NOTES TO THE USER If the printer unit 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. Figure 1-601 Fixing Assembly Releasing Lever COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 1 GENERAL DESCRIPTION VII. NOTES TO THE SERVICE PERSON A. Storing the Drum Cartridge and the Toner Cartridges Regardless of whether they have been opened or not, the cartridges (Y, M, and C toner cartridges, black toner cartridge, and drum cartridge) remain subject to the influences of the environment, and their characteristics change over time. (This is also true regardless of how many copies/prints they have processed.
CHAPTER 1 GENERAL DESCRIPTION 2. After Opening the Package The photosensitive drum is an organic photoconductor (OPC), and would deteriorate if subjected to strong light. The toner cartridges, on the other hand, contains toner, requiring care by the user for storing and handling after they have been opened. 3. Storage Environment (after opening) 1) Keep it in a protective bag. 2) Avoid direct sunshine. Avoid bright areas (e.g., near windows).
CHAPTER 1 GENERAL DESCRIPTION B. Points to Note When Handling the Drum Cartridge and the Toner Cartridges 1) When setting a new toner cartridge (Y/M/C toner cartridge, black toner cartridge) in the printer unit or if white spots occur on output prints because of uneven toner inside a cartridge, hold the cartridge horizontal and rotate it slowly up and down (about 45°) five to six times to even out the toner. (Instruct the user to observe this.
CHAPTER 1 GENERAL DESCRIPTION 8) Do not touch the two waste toner detecting windows of the drum cartridges. Toner detecting windows Figure 1-702 9) Do not touch the protection shutter of the toner cartridge. Black toner cartridge Protection shutter Y/M/C toner cartridge Protection shutter Figure 1-703 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 1 GENERAL DESCRIPTION VIII. IMAGE FORMATION A.
CHAPTER 1 GENERAL DESCRIPTION The machine’s image formation processes can be grouped into the following six blocks (12 steps): 1. Latent Block Step 1: Step 2: Step 3: 4. ITD (intermediate transfer drum) cleaning block Step 9: ITD cleaning roller charging Step 10: ITD cleaning Static Image Formation pre-exposure primary charging laser beam exposure 5. Photosensitive Drum Cleaning Block Step 11: drum cleaning 2. Development Block Step 4: development 3.
CHAPTER 1 GENERAL DESCRIPTION B. Latent Static Image Formation Block This block consists of three steps, performed to generate a latent static image on the photosensitive drum. At the end of the last step in this block, the dark areas of the drum which have not been exposed to the laser beam retain negative charges, while the light areas of the drum which have been exposed to the laser beam are rid of negative charges.
CHAPTER 1 GENERAL DESCRIPTION Step 1 (pre-exposure) In preparation for primary charging, the light from the pre-exposure LED assembly is directed to the surface of the photosensitive drum to remove the residual charges from the surface, thereby preventing uneven density. Pre-exposure LED assembly Primary charging roller D LE Photosensitive drum Intermediate transfer drum Figure 1-804 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 1 GENERAL DESCRIPTION Step 2 (primary charging) In preparation for laser beam exposure, the surface of the photosensitive drum is charged to a uniform negative potential. The machine’s primary charging consists in directly charging the photosensitive drum. The primary charging 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.
CHAPTER 1 GENERAL DESCRIPTION C. Development Block In this block, toner is deposited on the latent static image on the surface of the photosensitive drum, thereby turning it into a visible image. The machine’s black toner is a magnetic, single-component toner, and its color toner is non-magnetic, single-component toner; the printer unit uses the toner projection method of development.
CHAPTER 1 GENERAL DESCRIPTION Black toner cartridge ,,, yyy ,,, yyy ,,, yyy Stirring plates Blade Developing cylinder Photosensitive drum AC bias DC bias yy ,, ,, yy yy ,, ,, yy Color toner cartridge Blade Stirring plate Developing cylinder Photosensitive drum AC bias DC bias Toner feeding roller Figure 1-807 Caution: Although the light area on the surface of the photosensitive drum is expressed as having positive potential, it in practice is charged to a negative potential.
CHAPTER 1 GENERAL DESCRIPTION D. Transfer Block In this block, the toner image on the surface of the photosensitive drum is transferred to paper by way of the intermediate transfer drum. Step 5 (primary transfer) The intermediate transfer drum is charged to positive potential from its inside to move the toner from the surface of the photosensitive drum to the intermediate transfer drum. This process is repeated for each color (Y, M, C, Bk) in sequence.
CHAPTER 1 GENERAL DESCRIPTION Step 6 (secondary pre-transfer charging) A combination of an AC bias and a DC bias is applied 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. Secondary pre-transfer charging assembly Intermediate transfer drum AC bias DC bias Figure 1-809 1-28 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 1 GENERAL DESCRIPTION Step 7 (secondary transfer) In this step, the toner on the intermediate transfer drum is transferred to paper, which is forced against the intermediate transfer drum by the secondary transfer belt assembly pushed up by the secondary transfer belt cam. In this step, continuous application of a positive bias on the secondary transfer belt causes the surface of the belt to take on a negative potential, possibly leading to separation faults if left unattended.
CHAPTER 1 GENERAL DESCRIPTION Step 8 (separation) Paper is attracted to the secondary transfer belt to separate it from the intermediate transfer drum. To suit the type of 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 E. ITD (intermediate transfer drum) Cleaning Block This block consists of two steps, cleaning the intermediate transfer drum by returning the residual toner from the intermediate transfer drum to the photosensitive drum. Note: In the secondary transfer block, the toner on the intermediate transfer drum is transferred to paper, leaving a minute amount of toner behind.
CHAPTER 1 GENERAL DESCRIPTION Step 10 (intermediate transfer drum cleaning) In this step, different biases are applied to the intermediate transfer drum and the photosensitive drum to return the residual toner (charged to a uniform potential by the cleaning roller) existing on the intermediate transfer drum back to the photosensitive drum.
CHAPTER 1 GENERAL DESCRIPTION F. Photosensitive Drum Cleaning In the primary transfer step, not all toner on the photosensitive drum is transferred to the intermediate transfer drum, but some remains on the drum. The same is true of the secondary transfer step, in which not all toner on the intermediate transfer drum is transferred to paper—residual toner remains on the intermediate transfer drum after ITD cleaning.
CHAPTER 1 GENERAL DESCRIPTION G. Fixing Block The toner image transferred to paper in the transfer block merely “sits” on the paper by the work of static electricity, and would collapse if subject to the slightest impact. In this block, the four color toners 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.
CHAPTER 2 BASIC OPERATION This chapter provides descriptions on basic operations, functions of each operation, relationships between electrical and mechanical systems, and timing at which each associated part is turned on. I. BASIC OPERATIONS ..............................2-1 A. Functional Construction .....................2-1 B. Electrical Circuitry ..............................2-2 C. Inputs to and Outputs of the Major PCBs. .................................................
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CHAPTER 2 BASIC OPERATION I. BASIC OPERATIONS A. Functional Construction The printer unit consists of four functional blocks: pick-up/feeding system, laser exposure system, image formation system, and control system.
CHAPTER 2 BASIC OPERATION B. Electrical Circuitry The machine’s electrical mechanisms are controlled by the two CPUs (Reference) on the DC controller PCB.
CHAPTER 2 BASIC OPERATION C. Inputs to and Outputs of the Major PCBs 1. Inputs to and Outputs from the DC Controller (1/10) DC controller PCB J15 Registration paper sensor Separation sensor PS 1 J16-3 -1 -2 -1 -3 -2 -3 -1 -2 J212-8 P5SAVE -10 -9 REGS* PS 5 J49-3 -1 -2 -1 -3 -2 J38 -3 -1 -2 J2 -5 -7 P5SAVE -6 SEPS* When the sensor detects paper, '0'. When the sensor detects paper, '0'.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PCB (2/10) Multifeeder tray PCB DC controller PCB Multifeeder tray paper sensor PS 1301 Holding tray position sensor PS 1302 Developing rotary position sensor MPTPS* -6 MPTPS* -3 -6 -3 J43-3 -1 -2 PS 3 J213-7 J1301-7 P5SAVE -1 -3 -2 J42 -3 -1 -2 J207-3 P5SAVE -5 -4 DEVHP When paper is present on the multifeeder tray, '0'. When the holding plate moves up, '1'. When the flag is detected, '1'. For details, see p. 4-12.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PCB (3/10) DC controller PCB Cassette 1 last paper sensor PS 29 -2 -3 -1 J54-2 -1 -3 J53 -2 -1 -3 J215-2 -3 -1 P5SAVE When the cassette 1 UCEDFS*contains 1 sheet of paper, '0'. For details, see p. 5-15. Multifeeder tray last paper sensor PS 19 J34-3 -1 -2 -1 -3 -2 J32 J208-1 -3 -2 -3 -1 -2 P5SAVE When the multifeeder MPDFS* tray contains more than 1 sheet of paper, pulse signals are generated. For details, see p. 5-18.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PBC (4/10) DC controller PCB Cassette size PCB SW1601 SW1602 SW1603 SW1604 Cassette 2 size detecting switch J218-5 -4 -3 -2 -1 J1601A-1 -2 -3 -4 -5 LSIZE1 LSIZE2 LSIZE3 LSIZE4 The size of the cassette 2 is identified based on combinations of the states of the four switches. For details, see p. 5-6.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PCB (5/10) Laser/scanner Laser driver PCB J1001-9 -10 -6 -5 -8 -3 -2 J205-2 -1 -5 -6 -3 -8 -9 -7 -4 -1 -4 -7 -10 J2-3 -2 -1 -1 -2 -3 J901-4 -3 -1 -2 -4 -5 -7 -6 BD PCB M6 +5V J40 DC controller PCB PD BSAMPLE BSAMPLE* LENB* BDATA BDATA* Photodiode current monitor signal APC sampling timing signal 1 APC sampling timing signal 2 Laser drive PCB enable signal Video data PWM signal 1 Video data PWM signal 2 -7 -6 -5 J211-1
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PCB (6/10) DC controller PCB Multifeeder tray PCB Holding plate solenoid SL4 Multifeeder pickup clutch CL3 J1302-2 -1 J1301-2 -1 J213-2 -5 +24UH MPTSLD* When '0', the holding plate solenoid turns on: if the holding plate is up, it moves down; if down, up. J1303-2 -1 J1301-4 J213-4 MPTCLD* When '0', the multifeeder pick-up roller rotates.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PCB (7/10) Developing rotary motor PCB Main relay PCB J701-1 24VB -4,5 24VAR J648-5 -1,2 Black toner cartridge detecting switch +24VB J641-1,2,3 DC controller PCB Right cover switch SW641 SW644 PMP J644-2 -1 J647-A7 J227-A5 DSW3 Turret button switch SW673 J673-4 EXSW* J643-3 J647-B5 J227-B7 EXSW* When the turret button is PBK Sub relay PCB J673-3 When the black toner cartridge is present, '1'. pressed, '0'.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PCB (8/10) Main relay PCB Sub relay PCB DC controller PCB +24UH ITD cleaning roller solenoid SL1 J674-2 -1 J637-1 J643-6 -5 -2 J227-A6 CLNRON When '1', the ITD cleaning roller solenoid turns on to lock and unlock the cleaning roller to and from the transfer drum.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Control PCB (9/10) High-voltage PCB 1 DC controller PCB +24UH Cartridge motor M3 J5003-1 -2 -3 -4 -5 J5001-A10 J226-A3 -A9 -A4 -B3 -B10 -B4 -B9 SLVPHA SLVPHA* Cartridge motor rotation control SLVPHB SLVPHB* Controls the rotation of the developing cylinder for the color and black toner cartridges. For details, see p. 4-36.
CHAPTER 2 BASIC OPERATION Inputs to and Outputs from the DC Controller PCB (10/10) Printer unit power supply switch* J107 -12 J216 -1 Power supply SW1 J106-3 J217-4 -2 -5 Power supply control IC J107-10 J216-3 Fixing assembly error detection circuit JP1 RL101 Fixing heater safety circuit POFF When the power switch is on, '0'. PCONT When '0', the power turns on.
CHAPTER 2 BASIC OPERATION 2. Inputs to and Outputs from the Duplexing Driver PCB Duplexing driver PCB Duplexing paper sensor Horizontal registration guide home position sensor Reversal paper sensor Duplexing feeder roller 1 home position sensor PS24 J20-3 -1 -2 J2008-1 -3 -2 +5V DUPPS* PS25 J21-3 -1 -2 J2006-1 -3 -2 +5V HREGS PS26 J22-3 -1 -2 J2007-1 -3 -2 +5V SWBKS* J2007-4 -6 -5 +5V DRPS PS23 J23-3 -1 -2 When the sensor detects paper, '0'.
2-14 COPYRIGHT © 1999 CANON INC.
CHAPTER 2 BASIC OPERATION Period Purpose Remarks During the period, the presence/ absence of paper and toner cartridges is checked, and image stabilization correction control is performed. WMUP (warm-up) From when the power switch is turned on to when the surface temperature of the upper fixing roller reaches 160°C and that of the lower fixing roller reaches 165°C. To heat the fixing roller, thereby putting the printer unit into standby state.
2-16 COPYRIGHT © 1999 CANON INC. CCW 1.1 1.6 CW 4.3 4.7 0.3 4.3 0.2 1.0 1.6 4.3 4.7 4.3 4.7 PRNT CCW 3.5 3.5 1.0 1.0 0.2 2.3 1.8 1.8 LSTR Cartridge motor(M3) Developing rotary motor (M1) Drum motor (M2) Feeding clutchV (CL2) Cassette pick-up solenoid (SL3) Pick-up motor (M5) Registration clutch (CL1) Main motor (M4) Pre-exposure LED Heat discharge fan (FM3) 2.0 Heat discharge fan (FM1) 0.
COPYRIGHT © 1999 CANON INC.
CHAPTER 2 BASIC OPERATION Purpose Period INTR (initial rotation) From when the PRNT* signal arrives from the printer board to when the Bk toner cartridge is ready for development and the cartridge motor stops. To stabilize the sensitivity of the photosensitive drum in preparation for printing. Also, to prepare for development by toner cartridges. PRINT (print) From when initial rotation ends to when paper reaches the registration roller after the end of primary transfer.
CHAPTER 2 BASIC OPERATION E. Controlling the Main Motor DC controller PCB D-CPU (IC201) +5V M-CPU (IC202) +24UH J219-6 24UH J1-1 -3 MRDY* -4 -1 MSPED1 -6 -2 MSPED2 -5 -4 MON* -3 -5 GND -2 Main motor Extension I/O (IC203) M4 Figure 2-117 The main motor is a 3-phase 8-pole DC brushless motor.
CHAPTER 2 BASIC OPERATION Table 2-103 shows the relationship between speed and combinations of MSPED1 and MSPED2. MSPED1 0 1 0 1 Normal mode (normal rotation) Transparency mode (1/4 speed) Thick paper mode (1/3 speed) At rest MSPED1 0 0 1 1 Table 2-103 In the event of the following (main motor error), the D-CPU communicates the fact to the printer board*2: 1.MRDY* does not go ‘0’ 2.5 sec after the main motor starts to rotate.*3 2.MRDY* goes ‘1’ for 2.5 sec or more after MRDY* has gone ‘0’ once.
CHAPTER 3 LASER EXPOSURE SYSTEM This chapter provides descriptions on the machine’s laser exposure operations, functions of each operation, relationships between electrical and mechanical systems, and timing at which each associated part is turned on. I. II. OUTLINE..................................................3-1 LASER CONTROL CIRCUIT ...................3-3 A. Outline................................................3-3 B. Image Signal Processing ...................3-5 C.
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CHAPTER 3 LASER EXPOSURE SYSTEM I. OUTLINE Printer board*1 DSYNC* DTOP* DVDO0~7* DVCLK DCMD* DPRNT* Video interface PCB BD* BSAMPLE BSAMPLE* LENB* DC controller PCB BDATA BDATA* SCMFG SCND Laser driver Collimating lens PCB Cylindrical lens 6-facet mirror Scanner motor BD PCB Imaging lens BD mirror Reflecting mirror Photosensitive drum Figure 3-101 *1 Reader controller PCB (when making prints with the reader unit installed).
CHAPTER 3 LASER EXPOSURE SYSTEM The signals are further converted into laser drive signals on the laser driver PCB (internal signals of the laser/scanner assembly) used to turn on and off the laser diode, thereby generating a laser beam. The modulated laser beam is turned into a parallel beam by means of a collimating lens and a cylindrical lens, and is directed to a 6-facet mirror rotating at a specific speed.
CHAPTER 3 LASER EXPOSURE SYSTEM II. LASER CONTROL CIRCUIT A. Outline DC controller PCB BD* BD PCB BDATA*, BDATA LVDS IC (IC209) BSAMPLE*, BSAMPLE VDATA* Laser driver PCB +5V Receiver IC PCLK LENB* Current/voltage BD* DTOP* DLSYNC* conversion circuit DPRNT* DCMD* D-CPU (IC201) VDATIN8* Switching G. A.
CHAPTER 3 LASER EXPOSURE SYSTEM The PWM IC (IC208) generates PWM modulation signals (VDATA*; PWM video signals); then, it sends two sets of laser drive signals (DATA*, BDATA) through the LVDS IC (IC209) to the laser driver PCB. The receiver (IC1001) on the laser driver PBC demodulates these two sets of signals to generate laser drive signals (DATA*) for the laser drive IC (IC1002).
CHAPTER 3 LASER EXPOSURE SYSTEM B. Image Signal Processing The printer board sends video signals (VDO0 through 7*; C, M, Y, and Bk, each representing 8-bit data) and CMD* signals (image mode switching command) to the DC controller PCB. The D-CPU (IC201) on the DC controller PCB is used to generate image mode switch signals (VDATIN8*; Note) from CMD* signals.
CHAPTER 3 LASER EXPOSURE SYSTEM C. Controlling the Laser Intensity The auto intensity control mechanism (APC) of the laser diode is controlled by the laser drive IC (IC1002) to ensure that the laser diode emits light at a specific intensity. The DC controller PCB causes the APC sampling timing signal (SAMPLE*) to go ‘0’ for each line of image data. The image enable signal (LENB*) and the laser drive signal (DATA*) go ‘0’, and the laser drive IC (IC1002) enters sampling mode (Note 1).
CHAPTER 3 LASER EXPOSURE SYSTEM Note: 1. Sampling Mode In APC control, when the LENB* signal is ‘0’ and the SAMPLE* signal is ‘0’ (i.e., the unblanking signal UBLON used to generate the SAMPLE* signal is generated by the GA), the DATA* signal is forced to go ‘0’. 2. Hold/Print Mode In this mode, the laser intensity resulting from APC control is retained. When the SAMPLE* signal is ‘1’ and the LENB* signal is ‘0’, C1004 retains the laser intensity in the form of a voltage without regard to DATA* signals.
CHAPTER 3 LASER EXPOSURE SYSTEM E. Controlling the Laser Diode Emission T2 T1 5 mm T3 5mm Left/right HORZEN masking signal VERTEN LSYNC* TOPR* Top/bottom masking signal The laser drive circuit turns on and off the laser diode according to laser drive signals from the PWM IC when the image enable signal (LENB*) from the DC controller PCB is ‘0’ and the APC sampling timing signal (SAMPLE*) is ‘1’.
CHAPTER 3 LASER EXPOSURE SYSTEM III. LASER SCANNER MOTOR A. Controlling the Laser Scanner Motor DC controller PCB PRNT* D-CPU SCNON 20 (IC201) 54 27 GA (IC204) 29 28 30 33 31 VDWN* VUP* PLDWN* PLUP* Speed control voltage generation circuit Motor drive voltage generation circuit Lock detection circuit C286 J211-2 J211-7 J211-5 SCND J901-1 7 SCMFG J901-3 5 M Scanner motor BD* J2-2 2 BD BD PC Figure 3-301 The machine’s laser scanner motor is a 3-phase, 8-pole DC brushless motor.
CHAPTER 3 LASER EXPOSURE SYSTEM The speed is controlled based on the laser scanner motor speed signal (SCMFG) from the laser scanner motor, while the phase is controlled using the BD signal. (See Note.) When the printer unit is turned on and the PRNT* signal is sent to the D-CPU (PC201) on the DC controller PCB, the D-CPU sends the rough adjustment acceleration signal (VUP*) to the speed control voltage generation circuit through the GA (IC204).
CHAPTER 3 LASER EXPOSURE SYSTEM IV. FAULT IN THE LASER SCANNER The laser scanner is checked for a fault by the D-CPU (IC201) by monitoring the BD* signal by way of the GA. It then stops the laser scanner motor if the cycle of the BD* signals fails to be a specific cycle (Note 1) or the cycle of the BD* signals deviates from a specific cycle (Note 2).
CHAPTER 3 LASER EXPOSURE SYSTEM V. DISASSEMBLY/ASSEMBLY Make sure of the following when disassembling or assembling the machine: 1. 2. 3. 4. 5. 6. When the printer unit power switch is turned off, the fans will operate for about 30 min to cool the machine (so as to prevent caking of toner).
CHAPTER 3 LASER EXPOSURE SYSTEM A. q w e r t y u i o Printer Unit External Covers Front cover Front right cover Upper cover Side cover Rear cover Upper left cover Delivery assembly cover Right cover Multifeeder tray e i q o w r y t u Figure 3-501 !0 !1 !2 !3 Inside Inside Inside Inside cover cover cover cover 1 2 3 4 !1 !0 !2 !3 Figure 3-502 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.
CHAPTER 3 LASER EXPOSURE SYSTEM 1. Front Cover 1) Open the front cover. 2) Remove the two screws, and remove the metal fixing and the strap; then, lift the front cover to detach. r q w Caution: When mounting the front right cover to the printer unit, be sure to check to make sure that the two claws under the front right cover and the hook on the right of the front right cover are fitted in the printer unit. Otherwise, the front cover will not close. 3.
CHAPTER 3 LASER EXPOSURE SYSTEM 4) Lift the upper cover, and disconnect the connector; then, detach the upper cover. q w 4. Side Cover 1) If the PS/PCL board is installed, loosen and remove the screws. 2) Open the left cover. 3) Remove the strap and the four screws. w e q q Upper cover w Connector Figure 3-507 Caution: Put the connector w under the edge saddle of the printer unit when mounting the upper cover.
CHAPTER 3 LASER EXPOSURE SYSTEM 5. Rear Cover 1) Remove the side cover by following the steps on p. 3-15. 2) While opening the right cover 2, remove the screw, and detach the right cover 3. 4) Open the right cover, and remove the three screws. w q q e w q Screws w Rear cover Figure 3-512 q Right cover 2 e Right cover 3 w Screw 5) Lift the open/close lever to open the fan cover. Figure 3-510 q 3) Remove the two screws.
CHAPTER 3 LASER EXPOSURE SYSTEM 6) Remove the screw, and detach the sub cover. 6. Left Cover 1) Open the left cover, and remove the strap. w q q w q Screw w Sub cover q Left cover w Strap Figure 3-514 Figure 3-516 7) Remove the 13 screws, and detach the rear cover together with the fan cover by sliding them up. 2) Remove the two screws, and detach the left cover. q q w w q q Screws w Rear cover Figure 3-515 COPYRIGHT © 1999 CANON INC.
CHAPTER 3 LASER EXPOSURE SYSTEM 7. Delivery Cover 1) Open the delivery cover. 2) Extend the two rods attached to the printer, and detach the delivery cover from the rod plates. 8. 1) 2) 3) Right Cover Open the multifeeder tray. Open the right cover. Remove the screw, and turn over the pre-exposure LED assembly.
CHAPTER 3 LASER EXPOSURE SYSTEM Caution: When removing the pre-exposure LED assembly, take care not to apply excess force to the pre-exposure LEDs. 9. 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. 5) Remove the two screws, and detach the heat discharge fan 3 together with the fan duct. w q q Claws Figure 3-524 q q Screws w Fan duct 3) Disconnect the connector, remove the multifeeder tray.
CHAPTER 3 LASER EXPOSURE SYSTEM 10. Inside Cover 1 1) Remove the front cover by following the steps on p. 3-14. 2) Remove the upper cover by following the steps on p. 3-14. 3) Open the delivery cover. 4) Disengage the two claws, and detach the toner catch tray cover. 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.
CHAPTER 3 LASER EXPOSURE SYSTEM 12. Inside Cover 3 1) Open the right cover. 2) Remove the front right cover by following the steps on p. 3-14. 3) Push the releasing lever button; then, remove the two screws, and detach the releasing lever 2. 13. Inside Cover 4 1) Remove the inside cover by following the steps on p. 3-20. 2) Remove the inside cover 3 by performing steps 3) and 4) on p. 320. 3) Remove the screw, and detach the jam removing knob.
CHAPTER 3 LASER EXPOSURE SYSTEM B. Door Switch Actuator 1. Construction The door switch actuator is designed to enable checks on operation while the front cover and the right cover are open, as when checking the image formation on the intermediate transfer drum and paper feeding. 3. a. 1) 2) Using the Door Switch Actuator Front Cover Open the front cover. Insert the door switch actuator as shown.
CHAPTER 3 LASER EXPOSURE SYSTEM b. Front Cover Laser Shutter 1) Open the front cover. 2) Insert the door switch actuator as shown. Front shutter door switch c. Right Cover 1) Open the front cover. 2) Insert the door switch actuator as shown. Front right cover door switch Door switch actuator Door switch actuator Figure 3-536 COPYRIGHT © 1999 CANON INC. Figure 3-537 CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 3 LASER EXPOSURE SYSTEM d. Right Cover Laser Shutter 1) Open the front cover. 2) Inert the door switch actuator as shown. Figure 3-538 Front shutter switch Door switch actuator Caution: When checking the operation with the right cover open, be sure to place print paper over the density sensor as shown. Density sensor Print paper , 3-24 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 3 LASER EXPOSURE SYSTEM C. Laser/Scanner Assembly 1. Construction The laser/scanner assembly is used to move a laser beam over the photosensitive drum, and is constructed as shown in 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 disconnect the two connectors; then, detach the laser/scanner assembly assembly.
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CHAPTER 4 IMAGE FORMATION SYSTEM This chapter provides descriptions on the machine’s image processing operations, functions of each operation, relationships between electrical and mechanical systems, and timing at which each associated part is turned on. I. II. III. IV. OUTLINE..................................................4-1 A. Construction.......................................4-1 B. Operations..........................................4-2 FORMING LATENT STATIC IMAGES......4-5 A. Outline..........
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CHAPTER 4 IMAGE FORMATION SYSTEM I. OUTLINE A. Construction The image formation system is the core of the machine, and consists of the latent static image formation block (drum cartridge, pre-exposure LED assembly); developing block (color toner cartridges, black toner cartridge, developing rotary assembly); and transfer block (intermediate transfer drum, secondary pre-transfer charging assembly, secondary transfer belt, separation static eliminator, ITD cleaning roller).
CHAPTER 4 IMAGE FORMATION SYSTEM B. Operations In response to the print signal (PRNT*) from the printer board*1, the DC controller PCB drives the photosensitive drum, primary charging roller, developing rotary assembly, intermediate transfer drum, secondary transfer belt, and ITD cleaning roller. At the same time, it turns on the LEDs of the pre-exposure LED assembly to remove the residual charges from the surface of the photosensitive drum.
CHAPTER 4 IMAGE FORMATION SYSTEM The residual toner on the photosensitive drum is removed by the cleaning blade, and is collected in the waste toner case inside the drum cartridge. Then, the potential of surface of the photosensitive drum is made even by the pre-exposure assembly and the primary charging roller to prepare for a new latent static image.
CHAPTER 4 IMAGE FORMATION SYSTEM Printer board*1 PRNT* VDO 0~7* Video interface PCB Separation static eliminating high-voltage PCB FAN3ON* DC contro ller PCB Primary transfer bias Black developing cylinder Secondary transfer bias Laser beam Secondary transfer charging bias Primary charging bias Black developing bias Color developing bias ITD cleaning bias Separation static eliminating bias High-voltage PCB 1/2 Main relay PCB Pre-exposure LED relay PCB Primary charging roller Bk toner c
CHAPTER 4 IMAGE FORMATION SYSTEM II. FORMING LATENT STATIC IMAGES A. Outline The latent static image formation block consists of the drum cartridge and the preexposure LED assembly. The drum cartridge houses the photosensitive drum, primary charging roller, waste toner case, drum cartridge memory, toner feeding roller, and stirring plate.
CHAPTER 4 IMAGE FORMATION SYSTEM B. Drum Cartridge Memory The drum cartridge memory (EEPROM) contains two areas: ROM area and RAM area. The ROM area retains an ID code specific to the drum cartridge, and is used exclusively for reading. The DC controller PCB reads the ROM area of the drum cartridge when the power switch is turned on or the cover is closed to check if the correct cartridge is set.
CHAPTER 4 IMAGE FORMATION SYSTEM Drum cartridge memory MDO1 MDI1 MSK1 MSC1 OPCSNS Drum cartridge DC controller PCB 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 Figure 4-202 Reference: E810: absence of the drum cartridge.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Checking the Life of the Photosensitive Drum The DC controller PCB makes a check to find out from the data in the drum cartridge memory whether the photosensitive drum has exceeded its life. The life data is stored in the drum cartridge memory, and the DC controller updates the data at such times as programmed.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Monitoring the Waste Toner Case The toner inside the waste toner case is monitored by the waste toner detecting assembly mounted to the drum cartridge. The detecting assembly consists of a light-emitting section and a light-receiving section. The light generated by the light-emitting section is directed to the detecting window of the drum cartridge. It moves through the cartridge when the stirring plate inside moves toner away from around the detecting widow.
CHAPTER 4 IMAGE FORMATION SYSTEM III. DEVELOPMENT A. Outline The developing assembly consists of three color toner cartridges and the developing rotary assembly to which they are mounted and the black toner cartridge. The developing rotary assembly rotates clockwise by the work of the developing rotary motor (M1); inside, the yellow, magenta, and cyan color toner cartridges are arranged in the order indicated and are positioned against the photosensitive drum as needed.
CHAPTER 4 IMAGE FORMATION SYSTEM DC controller PCB q w e r t y u i Developing rotary motor PCB o !0 High-voltage PCB1 Main relay PCB M1 SL5 M3 SW644 Sub relay PCB Black developing cylinder Black toner cartridge Stopper arm Black developing cylinder PS1901C PS1902 PS621 PS3 Developing rotary assembly Intermediate transfer drum Color toner cartridges Color developing cylinder PS3: PS621: PS1902: PS1901C: SL5: SW644: M1: M3: developing rotary position sensor color toner cartridge lev
CHAPTER 4 IMAGE FORMATION SYSTEM B. Controlling the Developing Rotary When the DC controller PCB receives the print signal (PRNT*) from the printer board*1, it generates the developing rotary motor drive signal to turn on the developing rotary motor (M1) so that the developing rotary starts normal rotation. When the DC controller PCB detects that the developing rotary has rotated to a point of deceleration, it slows down the developing rotary motor.
CHAPTER 4 IMAGE FORMATION SYSTEM If PS3 detects any of the following as a fault in the developing rotary assembly, the DC controller PCB recognizes the fault and communicates the fact 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).
CHAPTER 4 IMAGE FORMATION SYSTEM C. Locking the Developing Rotary When the cartridge moves to its point of removal, the stopper lever is pushed to the developing rotary assembly to lock the developing rotary assembly in position.
CHAPTER 4 IMAGE FORMATION SYSTEM RLSROT STPROT RLOCKS DC controller PCB Sub relay PCB Cartridge releasing lever Developing rotary stopper solenoid SL5 Color cartridge Stopper lever PS1902 Cartridge releasing lever sensor Toner cartridge cover Developing rotary assembly Figure 4-303 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 4 IMAGE FORMATION SYSTEM E. Detecting the Level of Color Toner The level of color toner is detected by the color toner level sensor (PS621), which consists of a light-emitting section and a light-receiving section. The light from the light-emitting section found on the outside of the toner cartridges moves through the light guide to reach the detecting window inside the cartridge.
CHAPTER 4 IMAGE FORMATION SYSTEM F. Checking the Presence/Absence of a Color Toner Cartridge The presence/absence of a color toner cartridge is detected by the cartridge sensor (PS1901C), which consists of a light-emitting section and a light-receiving section.
CHAPTER 4 IMAGE FORMATION SYSTEM IV. TRANSFER A. Outline The transfer block consists of the intermediate transfer drum, secondary pre-transfer charging assembly, secondary transfer belt, separation static eliminator, and ITD cleaning roller, and serves to transfer the toner image from the photosensitive drum to paper and to remove residual toner. The intermediate transfer drum is rotated by the drum motor (M2), and the secondary transfer belt is rotated by the main motor (M4).
CHAPTER 4 IMAGE FORMATION SYSTEM B. Locking the Secondary Transfer Belt The secondary transfer belt assembly is locked to the intermediate transfer drum on which paper is placed before starting secondary transfer. Normally, the secondary transfer belt assembly is away from the intermediate transfer drum, and is locked to the holding transfer drum as needed.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Controlling the ITD Cleaning Roller The ITD cleaning roller is pushed against the intermediate transfer drum immediately before secondary transfer. Normally, the ITD cleaning roller remains away from the intermediate transfer drum, and is forced against the intermediate transfer drum as needed.
CHAPTER 4 IMAGE FORMATION SYSTEM V. IMAGE STABILIZATION CORRECTION CONTROL The machine executes image stabilization correction control to suppress fluctuations in image density caused by changes in the site environment, changes in the photosensitive drum over time, and changes in toner. The control mechanism consists of environmental changes correction control, image density correction control, and image gradation correction control. A.
CHAPTER 4 IMAGE FORMATION SYSTEM Note: 1. A color toner cartridge is assumed to have been taken out and put back in when the toner cartridge cover is opened. For the control mechanism to start when the color toner cartridge cover is closed, the right cover must be closed and, at the same time, the black toner cartridge and the drum cartridge must be inside (so that the color toner cartridge cover may be checked). The black toner cartridge is checked by the black toner cartridge detecting switch.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Detecting the Density Density detection pattern Intermediate transfer drum Photodiode 2 LED Photodiode 1 Density sensor Figure 4-501 The density of the density detection pattern drawn on the intermediate transfer drum is checked by the density sensor. The density sensor is mounted on the density detection PCB; the light of a LED is directed to the density pattern on the intermediate transfer drum, and the reflected light is received by the photodiode 1.
CHAPTER 4 IMAGE FORMATION SYSTEM VI. HIGH-VOLTAGE POWER SUPPLY CIRCUIT A.
CHAPTER 4 IMAGE FORMATION SYSTEM 1. Primary Transfer Bias Generation Circuit This circuit is controlled by three signals (Figure 4-602) generated by the DC controller PCB, and generates the primary transfer DC (positive) bias and primary transfer DC (negative) bias for application to the intermediate transfer drum. The primary transfer DC (positive) bias drive signal turns on and off the DC (positive) bias applied to the intermediate transfer drum.
CHAPTER 4 IMAGE FORMATION SYSTEM The copier’s high-voltage circuit consists of three PCBs; i.e., high-voltage PCB 1, high-voltage PCB 2, and separation static elimination high-voltage PCB.
CHAPTER 4 IMAGE FORMATION SYSTEM 1. Primary Charging Bias Generation Circuit This circuit is controlled by three signals (Figure 4-604) from the DC controller PCB, and generates primary charging DC bias and primary charging AC bias for application to the primary charging roller.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Color Developing Bias Generation Circuit This circuit is controlled by three signals (Figure 4-605) from the DC controller PCB, and generates the color developing DC bias and color developing AC bias for application to the color developing cylinder.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. Black Developing Bias Generation Circuit This circuit is controlled by three signals (Figure 4-606) from the DC controller PCB, and generates the black developing DC bias and black developing AC bias for application to the black developing cylinder.
CHAPTER 4 IMAGE FORMATION SYSTEM C. High-Voltage PCB 2 The high-voltage power supply PCB 2 consists of the five circuits shown in Figure 4607.
CHAPTER 4 IMAGE FORMATION SYSTEM 1. Secondary Pre-Transfer Charging Bias Generation Circuit This circuit consists of three signals (Figure 4-6y08) from the DC controller PCB, and generates the secondary pre-transfer charging DC bias and the secondary pre-transfer AC bias for application to the secondary pre-transfer charging assembly.
CHAPTER 4 IMAGE FORMATION SYSTEM 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.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Separation Static Eliminating Bias PCB This circuit is controlled by two signals (Figure 4-611) from the DC controller PCB, and generates the separation static eliminating DC bias and the separation static eliminating AC bias for application to the separation static eliminating assembly.
CHAPTER 4 IMAGE FORMATION SYSTEM VII. OTHER CONTROL MECHANISMS A.
CHAPTER 4 IMAGE FORMATION SYSTEM Rotation speed Detection of home position or shift to cartridge removal position Low-speed Other than above Normal Table 4-701 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 4 IMAGE FORMATION SYSTEM B.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Controlling the Drum Motor DC controller PCB D-CPU (IC201) 44 46 45 43 DRMPHA* DRMPHB* DRMPHB DRMPHA Drum motor +24UH driver (IC210) 5 17 16 6 7 12 1 18 11 8 J224-1 24UH -2 24UH -4 DRMPHA* -6 DRMPHB* -5 DRMPHB -3 DRMPHA Drum motor M2 Figure 4-703 The drum motor is a 2-phase stepping motor, and is controlled by the drum motor driver (IC210) to drive the intermediate transfer drum and the photosensitive drum.
CHAPTER 4 IMAGE FORMATION SYSTEM VIII. DISASSEMBLY/ASSEMBLY Make sure of the following when disassembling or assembling the machine: 1. 2. 3. 4. 5. 6. When the printer unit power switch is turned off, the fans will operate for about 30 min to cool the machine (so as to prevent caking of toner).
CHAPTER 4 IMAGE FORMATION SYSTEM A. Drive System Caution: 1. Removing the Drum Drive Unit 1) Perform steps 1) through 7) on p. 4-43 to remove the upper cover, rear cover, shielding box, heat discharge fan 1, and rear cover stay. 2) Perform step 2) on p. 4-56 to remove the high-voltage PCB 1. 3) Perform step 3) on p. 4-55 to remove the DC controller PCB. 4) Perform step 2) on p. 4-58 to remove the high-voltage PCB 2. 5) Perform step 3) on p. 4-58 to remove the sub transfer 2. 6) Perform step 3) on p.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Removing the Drum Motor 1) Remove the five screws, and detach the drive case. 3. Removing the Developing Rotary Position Sensor 1) Remove the screw, and detach the developing rotary position sensor. w w q q q Screws w Drive case Figure 4-802 q Screw w Developing rotary position sensor 2) Remove the drive gear shaft, and remove the four screws; then, detach the drum motor. Figure 4-804 q w q q Screw w Drum motor Figure 4-803 4-40 COPYRIGHT © 1999 CANON INC.
CHAPTER 4 IMAGE FORMATION SYSTEM 4. Removing the Delivery Drive Assembly 1) Perform steps 1) through 7) on p. 4-43 to remove the upper cover, heat discharge fan 1, shielding box, and rear cover stay. 2) Perform step 2 of removing the developing rotary motor PCB to remove the PCB. 3) Remove the two screws, and detach the duct cover. w q 5) Remove the seven screws, and detach the delivery drive assembly. q w q Screws w Delivery drive assembly Figure 4-807 q Screws w Duct cover Figure 4-805 5.
CHAPTER 4 IMAGE FORMATION SYSTEM 6) Remove the E-shaped stop ring and the bushing. 8) Remove the screw, and disconnect the connector; then, remove the metal fixing and the secondary transfer belt clutch. q w q w e r q E-shaped stop ring w Bushing Figure 4-809 7) Remove the E-shaped stop ring and the bushing; then, detach the releasing lever 2. q w e r Screw Connector Metal fixing Secondary transfer belt clutch Figure 4-811 9) Remove the two screws, and detach the main drive assembly.
CHAPTER 4 IMAGE FORMATION SYSTEM 6. Removing the Main Motor 1) Perform the steps on p. 4-55 to remove the DC controller PCB. 2) Remove the four screws, and disconnect the connector; then, detach the main motor. q 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 disconnect the two connectors on the DC controller PCB to detach; then, detach the video interface PCB.
CHAPTER 4 IMAGE FORMATION SYSTEM 5) Remove the five screws, and detach the shielding box. 7) Remove the five screws, and detach the rear cover stay. q w q w q Screws w Rear cover stay q Screws w Shielding box Figure 4-817 Figure 4-819 Note: Take care not to bend the grounding spring found on both ends of the shielding box. 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.
CHAPTER 4 IMAGE FORMATION SYSTEM 9) Remove the four screws, and disconnect the connector; then, remove the developing rotary motor. q e q 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 button on the releasing lever, push down the lever in lower right direction until it stops (thereby, unlocking the intermediate transfer drum).
CHAPTER 4 IMAGE FORMATION SYSTEM 3) While holding the left and right levers of the intermediate transfer drum, pull the drum straight; when it stops, remove it as if to lift it at an angle. 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 4-824 Note: The intermediate transfer drum is heaviest at the rear. Remove it as if to lift its rear. 2.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. Removing the Pre-Transfer Charging Assembly from the Intermedate Transfer Drum 1) Remove the two screws, and detach the secondary pre-transfer charging assembly from the intermediate transfer drum. 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 following: 1) Open the front cover.
CHAPTER 4 IMAGE FORMATION SYSTEM 4) Check to make sure that the developing rotary stopper arm is released; otherwise, pull the stopper to the front. 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 cartridge and the position of the color toner cartridge match, shift the releasing lever in the direction of the arrow.
CHAPTER 4 IMAGE FORMATION SYSTEM 5. Points to keep in Mind about Cartridges a. Photosensitive Drum Cartridges • Be sure to wrap the photosensitive drum cartridges with a protective cover whenever it is taken out of the copier. If it must be left out of the copier for a long time, be sure to put it in a protective bag. • Work fast as when cleaning. Exposing the drum to light for a long time will affect print images. • As a rule, do not touch or clean the drum. If absolutely necessary, use a flannel cloth.
CHAPTER 4 IMAGE FORMATION SYSTEM 6. Removing the Secondary Transfer Belt Assembly 1) Open the right cover and the front cover. 2) Perform steps 2) and 3) on p. 4-52 to remove the separation static eliminator. 3) Perform the steps on p. 4-45 to remove the intermediate transfer drum. 4) Pull up the lever 90°, and detach the secondary transfer belt assembly. 7. Removing the ITD Cleaning Holder Assembly 1) Perform the steps on p. 3-20, and detach the inside cover 1. 2) Open the right cover.
CHAPTER 4 IMAGE FORMATION SYSTEM • Enlarged View of the Right End q w 6) As 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.
CHAPTER 4 IMAGE FORMATION SYSTEM Note: Take care not to touch the surface of the roller. 3) Holding the releasing lever, pull out the separation static eliminator horizontally. 9. Removing the Separation Static Eliminator 1) Open the front cover. 2) While pressing the releasing button, shift the releasing lever 2 in the direction of the arrow.
CHAPTER 4 IMAGE FORMATION SYSTEM C. PCBs 1. Removing the Main Relay PCB 1) Perform the step on p. 4-56 to remove the high-voltage PCB 2. 2) Perform step 6) on p. 4-43 to remove the rear cover stay. 3) Remove the two screws, and disconnect the eight connectors; then, detach the main relay PCB. 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 disconnect the five connectors; then, detach the sub relay PCB.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. Removing the Video Interface PCB 1) Perform the steps on p. 3-16 to remove the rear cover. 2) Remove the four screws, and disconnect the two connectors on the DC controller PCB; then, detach the video interface PCB. Connector 3) Remove the two screws and the two hex nuts; then, detach the video interface PCB from the metal plate.
CHAPTER 4 IMAGE FORMATION SYSTEM 4. Removing the DC Controller PCB 1) Perform the steps on p. 3-16 to remove the rear cover. 2) Perform the steps on p. 4-54 to remove the video interface PCB. 3) Remove the four screws, disconnect the 24 connectors, and free the claw; then, slowly detach the DC controller PCB horizontally. Caution: 1. Connectors to the high-voltage PCB 2 are found on the back of the DC controller PCB, possibly subjected to force during replacement.
CHAPTER 4 IMAGE FORMATION SYSTEM 5. Removing the High-Voltage PCB 1 1) Perform steps 1) and 2) through 7) on p. 4-43 to remove the upper cover, rear cover, and rear cover stay. 2) Remove the threes screws, and disconnect the three connectors; then, slide high-voltage PCB 1 upward to remove. 6. Removing the High-Voltage PCB 2 1) Perform the steps on p. 4-55 to remove the DC controller PCB.
CHAPTER 4 IMAGE FORMATION SYSTEM 7. Removing the Separation Static Eliminating Bias PCB 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 disconnect the three connectors; detach the separation static cleaning bias PCB. 8. Removing the Developing Rotary Motor PCB 1) Perform the steps on p. 3-16 to remove the rear cover.
CHAPTER 4 IMAGE FORMATION SYSTEM 9. Removing the Density Detection PCB 1) Open the right cover. 2) Remove the six claws, and detach the holder cover. 4) Disconnect the connector, and detach the density detection PCB. q q w q w q Connector w Density detection PCB q Claw w Holder cover Figure 4-853 3) Remove the two screws. Figure 4-855 Note: When replacing the density detection PCB, take care not to touch the sensor assembly. q q Screws Figure 4-854 4-58 COPYRIGHT © 1999 CANON INC.
CHAPTER 4 IMAGE FORMATION SYSTEM 10. Removing the Sub Transformer 1 1) Perform steps 2) through 5) on p. 4-43 to remove the rear cover and the shielding box. 2) Perform step 3) on p. 4-55 to remove the DC controller PCB. 3) Remove the two screws, and disconnect the two connectors; then, detach the sub transformer 1. q w e w q Screws w Connectors e Sub transformer 2 e Figure 4-857 q q Screws w Connector e Sub transformer 1 12. Removing the Sub Transformer 3 1) Perform the steps on p.
CHAPTER 4 IMAGE FORMATION SYSTEM 3) Remove the screw, and remove the sub transformer 3. w 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 q q Screw w w Sub transformer 3 Figure 4-859 13. Removing the Color Toner Cartridge Sensor 1) Perform the steps on p.
CHAPTER 4 IMAGE FORMATION SYSTEM 15. Removing the Color Toner Cartridge Releasing Lever Sensor 1) Perform the steps on p. 3-20 to remove the inside cover 1. 2) Remove the screw, and disconnect the connector; then, detach the color toner cartridge releasing lever sensor. 16. Removing the Temperature/ Humidity Sensor 1) Remove the cassette 1/2. 2) Remove the three claws, and disconnect the connector; then, detach the temperature/humidity sensor.
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CHAPTER 5 PICK-UP/FEEDING SYSTEM This chapter provides descriptions on the machine’s operations between pickup and delivery, functions of each operation, relationships between electrical and mechanical systems, and timing at which each associated part is turned on. I. II. III. IV. V. OUTLINE..................................................5-1 A. Outline................................................5-1 PICK-UP ASSEMBLY...............................5-3 A. Pick-Up from the Cassette .................
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CHAPTER 5 PICK-UP/FEEDING SYSTEM I. OUTLINE A. Outline When the PRNT* signal arrives from the printer board*1 and the scanner motor becomes ready, the DC controller PCB starts printing operation. In the case of pick-up from the cassette, paper is fed into the printer unit by the pickup roller and is moved by the feeding roller; in the case of pick-up from the multifeeder, on the other hand, the multifeeder pick-up roller feeds paper into the printer unit.
CHAPTER 5 PICK-UP/FEEDING SYSTEM The printer unit switches over three feeding speeds according to the paper type mode signal from the printer board*1. Table 5-101 shows the speed used for each paper type. The feeding speed is switched when paper arrives at the registration paper sensor (PS1). Mode Feeding speed Normal Normal Thick paper 1/3 of normal Transparency 1/4 of normal Table 5-101 The printer unit enters transparency mode when the user selects transparencies on the control panel.
CHAPTER 5 PICK-UP/FEEDING SYSTEM II. PICK-UP ASSEMBLY A. Pick-Up from the Cassette 1. Pick-Up Operation The printer unit moves up the paper inside the cassette using a lifter to pick-up position; then, it brings down a rotating pick-up roller to come into contact with the paper for pick-up.
CHAPTER 5 PICK-UP/FEEDING SYSTEM DC controller PCB q w e r t Pick-up PCB M4 CL1 CL2 Registration roller Feeding roller 2 SL3 Pick-up roller Feeding roller 1 Separation roller Cassette 1 Lifter Pick-up roller Feeding roller 1 CW rotation Separation roller M5 CCW rotation Cassette 2 Lifter 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
CHAPTER 5 PICK-UP/FEEDING SYSTEM DC controller PCB e r t y u i o !0 !1 w q !2 !3 Pick-up PCB PS1 PS17 PS1208 Cassette 1 PS1202 PS1205 PS1206 SW1601 ~SW1604 PS29 PS120 PS1201 PS1203 PS1204 ~ Cassette 2 SW1601 SW1604 q w e r t y u i o !0 !1 !2 !3 : Cassette 1 last paper detection signal (UCEDFS) : Cassette 2 size detection signal : Cassette 1 size detection signal : Cassette 2 paper level detection signal 1 (LPVS1*) : Cassette 2 paper level detection signal 2 (LPVS2*) : Cassette 2 detection
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Detecting the Presence/Absence of a Cassette, Cassette Size, and Paper Level The presence/absence of the cassette 1 or 2 is checked by the cassette 1 sensor (PS1202) or the cassette 2 sensor (PS1201), and the presence/absence of paper is checked by the cassette 1 paper absent sensor (PS1208) or the cassette 2 paper absent sensor (PS1207).
CHAPTER 5 PICK-UP/FEEDING SYSTEM Pick-up assembly Pick-up PCB Paper level Sheets* 1 Full about 430 or more 2 High about 210 to 490 3 Medium about 60 to 270 4 Low about 120 or less *Plain paper (64 g/m2). 1 2 PS1204 or PS1206 PS1203 or PS1205 3 Lightblocking plate Lifter 4 Figure 5-204 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Lift-Up Operation The term “lift-up operation” is used to refer to the operation executed when the cassette is slid in or when the pick-up roller shaft falls a specific distance under a lowering stack of paper.
CHAPTER 5 PICK-UP/FEEDING SYSTEM a. When the Cassette Is Slid In q When the cassette is slid in, the main motor starts to rotate, and the cassette pickup solenoid (SL3) turns on. The drive moves through gears and rotates the cassette pick-up cam to operate the lift arm. Cassette pick-up cam Lift arm (main motor drive) Pick-up roller shaft Pick-up roller shaft fixing arm Cassette pick-up solenoid (SL3) Lifter gear Lift-up cam Figure 5-206 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 5 PICK-UP/FEEDING SYSTEM w When the lift arm lowers, the pick-up roller shaft moves down, pushing the lift-up releasing arm to free the lift-up cam. At the same time, the lift arm is locked to the pick-up roller shaft fixing arm, stopping the pick-up roller shaft at a specific position.
CHAPTER 5 PICK-UP/FEEDING SYSTEM r When the paper on the cassette holding plate comes into contact with the pick-up roller, the pick-up roller shaft is pushed up, freeing the fixing arm so that the lift-up releasing arm will 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 fix the lift-up cam in place, thereby stopping the lift-up arm and ending the lift-up operation.
CHAPTER 5 PICK-UP/FEEDING SYSTEM b. Decrease in the Stack q When the stack decreases and, as a result, its top surface lowers a specific distance, the pick-up roller moves farther down during pick-up, causing the pick-up roller shaft to push the lift-up releasing arm and the lift-up cam to be freed.
CHAPTER 5 PICK-UP/FEEDING SYSTEM w When the 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 operations are repeated to move up the cassette holding plate.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4. Preventing Double Feeding The printer unit uses a separation roller to prevent double feeding when pick-up is from the cassette. The separation roller is subjected to a rotating force opposite the rotation of the feeding roller. The separation roller is equipped with a torque limiter, and the rotation of the feeding roller 1 from the moving paper normally forces the separation roller to rotate.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5. Cassette 1 Last Sheet Detection The printer unit is capable of detecting the last sheet from the cassette 1.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Pick-Up from the Multifeeder Tray 1. Operation The presence/absence of paper on the multifeeder tray is checked by the multifeeder tray paper sensor (PS1301). In response to the PRNT* signal, the DC controller PCB starts the main motor (M4). At the same time, it turns on the holding plate solenoid (SL4) to free the holding plate (so that it may move up), causing the pick-up roller to come into contact with the stack of paper.
CHAPTER 5 PICK-UP/FEEDING SYSTEM DC controller PCB q w e r t y u i o !0 !1 Multifeeder tray PCB Multifeeder pick-up clutch M4 CL3 Registration clutch Multifeeder pick-up roller PS1301 PS19 CL1 PS1 PS1701 PS1302 Holding plate PS1802 PS1801 Registration roller SL4 Feeding roller 2 q : Registration clutch drive signal (REGCLD*) w : Main motor drive signal (MON*) e : Registration paper detection signal (REGS*) r : Multifeeder tray paper detection signal (MPTCLD*) t : Multifeeder tray pap
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Multifeeder Last Sheet Detection The printer unit is capable of detecting the last sheet from the multifeeder.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Table 5-202 shows the relationship between the combinations of FEDI0 and FEDI1 signal states and speeds: 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 FEDI1 L H L L H H H Table 5-202 5-20 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 5 PICK-UP/FEEDING SYSTEM III. FEEDING/DELIVERY ASSEMBLY A. Outline The printer unit switches between face-up and face-down delivery paths using the delivery flapper. The face-up delivery roller and the face-down delivery roller are driven by the main motor (M4); when the face-up solenoid drive signal (FUSLD*) goes ‘0’, the face-up solenoid (SL2) operates the face-up flapper so that it will face the face-up tray, delivering paper to the face-up tray.
CHAPTER 5 PICK-UP/FEEDING SYSTEM IV. DUPLEXING UNIT A. Outline Paper is moved to the copier’s reversing assembly through the duplexing unit by the duplexing flapper. It is then shifted by the reversing roller and moved inside the duplexing unit. When it has been adjusted for horizontal registration by the horizontal registration guide inside the duplexing unit (p. 5-26), it is moved by the duplexing feeding roller to the duplexing unit stacking assembly.
CHAPTER 5 PICK-UP/FEEDING SYSTEM DC control PCB Machine internal communications line Duplexing driver PCB q w e r t Duplex- SL6 ing flapper y Fixing delivery roller u i o Fixing roller SL7 Reversing roller releasing plate PS26 PS25 PS23 Re-pickup wait position PS24 Feeding roller 2 Duplexing lower guide Reversing roller Horizontal Duplexing registration feeding guide roller1 CL5 Duplexing feeding roller 2 M7 Upper cassette Reversing assembly M8 Lower cassette q: : Horizontal motor dr
CHAPTER 5 PICK-UP/FEEDING SYSTEM qw e !2 !1 r t !0 y o q : Reversing roller releasing plate w : Reversing roller releasing solenoid e : Duplexing motor r : Duplexing flapper solenoid t : Duplexing feeding roller 1 home position sensor y : Horizontal registration guide u i 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 Figure 5-402 (top
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Reversing Operation When the duplexing command arrives from the DC controller PCB, the duplexing driver PCB turns on the duplexing flapper solenoid (SL6), operating the duplexing flapper so that paper will be moved to the duplexing unit. When the leading edge of paper is detected by the reversal sensor (PS26), the duplexing driver PCB rotates the duplexing motor (M8) counterclockwise (CCW; Note) to move the paper to the machine’s reversing assembly.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Horizontal Registration Adjustment In duplexing mode, the printer unit performs horizontal registration adjustment so that the middle in main scanning direction of a second page will mach the middle of the printing area of the drum by butting the horizontal registration guides against both sides of paper. The presence/absence of the horizontal guide at its home position is checked by the horizontal registration guide home position sensor (PS25).
CHAPTER 5 PICK-UP/FEEDING SYSTEM When all is ready, the duplexing driver PCB drives the horizontal registration motor for a specific number of pulses based on the paper size data from the DC controller PCB to shift the horizontal registration guide according to the size of the paper for horizontal registration (Note). The horizontal registration guide returns to its home position a specific period of time after the leading edge of paper is moved and detected by the duplexing unit paper sensor (PS24).
CHAPTER 5 PICK-UP/FEEDING SYSTEM D. Re-Pickup The duplexing driver PCB turns on the duplexing feeding clutch (CL5) at the end of horizontal registration so as to move paper once gain. About 0.5 sec after the duplexing unit paper sensor (PS24) has detected the leading edge of paper, the duplexing driver PCB turns of the reversing roller releasing solenoid (SL7; if the paper is not A4R, LTRR, or A5); about 1.0 sec later, it turns off the duplexing feeding clutch (CL5).
CHAPTER 5 PICK-UP/FEEDING SYSTEM V. DETECTING JAMS A.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 1. Pick-Up Delay Jam 1 The CPU will identify a pick-up delay jam 1 if the print paper does not reach the pickup assembly paper sensor (PS17) a specific period of time (T = about 2.7 sec) after the vertical sync signal (TOP*) has been generated. 2. Pick-Up Delay Jam 2 The CPU will identify a pick-up delay jam 2 if the paper does not reach the registration paper sensor (PS1) a specific period of time (T) after the horizontal sync signal (TOP*) has been generated.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 7. Face-Down Delivery Slot Stationary Jam The CPU will identify a face-down delivery slot stationary jam if the paper does not move past the face-down tray delivery sensor (PS11) within a specific period of time (T) after the face-down tray delivery sensor (PS11) has detected the leading edge of the paper. T = about 2.4 sec (normal, A4) T = about 4.1 sec (normal, A3) T = about 9.4 sec (transparency, A4) T = about 16.6 sec (transparency, A3) T = about 7.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Detecting Jams in the Duplexing Unit The printer unit is equipped with the following paper sensors to check the presence/absence of paper or to find out whether paper is moving normally: • Duplexing unit paper sensor (PS24) • Reversal paper sensor (PS26) The presence/absence of a jam is checked in relation to the presence/absence of paper at a specific sensor at such times as programmed in the microprocessor (CPU) on the duplexing driver PCB.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Reversing Assembly Stationary Jam The duplexing driver PCB will identify a reversing assembly stationary jam if the paper does not move past the reversal paper sensor (PS26) within a specific period of time aft the duplexing flaper solenoid has turned on. (unit: sec) (unit: sec) COPY COPY Duplexing flapper solenoid drive signal T1 Jam check T1 Normal Reversal paper sensor CCW Duplexing motor Error CW T1 = about 3.2 sec for A4 (horizontal), about 6.
CHAPTER 5 PICK-UP/FEEDING SYSTEM VI.DISASSEMBLY/ASSEMBLY Make sure of the following when disassembling or assembling the machine: 1. When the printer unit power switch is turned off, the fans will operate for about 30 min to cool the machine (so as to prevent caking of toner).
CHAPTER 5 PICK-UP/FEEDING SYSTEM A. Pick-Up Assembly 1. Removing the Pick-Up Assembly 1) Slide out the cassette 1/2. 2) Perform the steps on p. 3-16 to remove the rear cover assembly. 3) Perform the steps on p. 5-42 to remove 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. 6) Remove the four screws, and detach the pick-up cassette cover.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 8) Remove the four screws, and detach the pick-up assembly. q q w q Screws w Pick-up assembly Figure 5-604 Note: 1. If you are replacing any of the parts of the pick-up assembly, be 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.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 1 2 3 4 6 7 5 q w e r t y u 57T gear Lift-up cam Pick-up cam 100T gear Lift-up cam (lower) 31T/47T gear 20T/41T gear Figure 5-605 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Removing the Pick-Up Motor 1) Disconnect the connector. 2) Remove the two screws, and slide the pick-up motor in the direction of the arrow to detach. 4) Remove the E-shaped stop ring, and detach the feeding clutch. q e e w w r q q Claw w Clutch fixing plate e E-shaped stop ring r Feeding clutch q Connector w Screws e Pick-up motor Figure 5-606 3. Removing the Feeding Clutch 1) Disconnect the connector.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Delivery Assembly 1. Removing the Delivery Assembly 1) Perform the steps on p. 3-14 to remove the upper cover. 2) Perform the steps on 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 disconnect the connector; then, detach the upper stay. 5) Remove the two screws, and detach the delivery assembly.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Feeding Assembly 1. Removing the Feeding Assembly 1) Perform the steps on p. 5-39 to remove the delivery assembly. 2) Remove the two screws, and remove the lower stay. q 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.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) While opening the registration roller guide and the jam guide, remove the four screws and disconnect the connector; then, detach the registration roller assembly. w 2. Removing the Registration Clutch 1) Remove the E-shaped stop ring, and detach the registration clutch. r e q w q q E-shaped stop ring w Registration clutch t q w e r t Registration roller guide Jam guide Screws Connector Registration roller assembly Figure 5-615 Figure 5-616 3.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3) Disengage the claw, and remove the gear; then, remove the spring, Eshaped stop ring, and bushing to detach the registration lower roller. e q E. Multifeeder Pick-Up Assembly 1. Removing 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.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 7) Extend the rod, and remove it from the rod holder of the multifeeder pick-up assembly. 9) Remove the E-shaped stop ring. q q w q E-shaped stop ring q Rod w Rod holder Figure 5-623 Figure 5-621 8) Remove the screw, and detach the rod holder cover. 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.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 11)Remove the three screws, and disengage the two claws; then, disconnect the connector, and detach the multifeeder pick-up assembly. w e 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 multifeeder pick-up roller by holding the knob on the roller.
CHAPTER 5 PICK-UP/FEEDING SYSTEM G. Multifeeder Tray Separation Pad 1. Removing the Multifeeder Separation Pad 1) Perform the steps on p. 5-44 to remove the multifeeder pick-up roller. 2) Remove the separation pad using a flat-blade screwdriver. 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.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2) Holding the knob, remove each roller from the printer unit. q w e 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 connectors; then, detach the pick-up PCB.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Cassette 1 Last Sheet Sensor 1) Remove the cassette 1/2. 2) Disengage the four claws, and disconnect the connector; then, remove the cassette 1 last sheet sensor. q 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.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 1) Open the multifeeder tray. 2) Remove the screw, and disconnect the connector; then, detach the multifeeder tray paper width detection PCB. e q w q Screw w Connector e Multifeeder tray paper width detection PCB Figure 5-634 5-48 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 6 FIXING SYSTEM This chapter provides descriptions on the machine’s fixing operations, functions of each operation, relationships between electrical and mechanical systems, and timing at which each associated part is turned on. I. II. OUTLINE..................................................6-1 FIXING CONTROL CIRCUIT ...................6-2 A. Controlling the Fixing Temperature ....6-2 B. Preventing Rush Current ...................6-3 C. Protecting the Fixing Assembly .........
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CHAPTER 6 FIXING SYSTEM I. OUTLINE The upper fixing roller, lower roller, and fixing delivery roller are driven by the main motor (M4). Paper separated from the intermediate transfer drum is fed inside the fixing assembly, moved between upper 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).
CHAPTER 6 FIXING SYSTEM II. FIXING CONTROL CIRCUIT A.
CHAPTER 6 FIXING SYSTEM • During standby, the temperature is controlled to 165°C. • During printing, the temperature is varied to suit the selected fixing mode (Note). Reference: The voltage is highest in the reader unit while the scanner is moved in reverse during printing operation with the reader unit installed. As such, the fixing heater is turned off.
CHAPTER 6 FIXING SYSTEM C. Protecting the Fixing Assembly The printer unit is equipped with the following three types of protective mechanisms to prevent malfunction of the fixing heater: • The M-CPU monitors the voltage of the upper fixing roller temperature detection signal (FXTHU) and the lower fixing roller temperature detection signal (FXTHL).
CHAPTER 6 FIXING SYSTEM e. The sensitivity of the thermsitor (Note 2) is on the high temperature side at power-on (during initial state), but the upper and lower fixing roller detection signals (FXTHU, FXTHL) are 60°C or less. The thermistor sensitivity is switched from the high to the lower temperature side. At this time, either FXTHU or FXTHL is -10°C or less. (thermistor open circuit) However, if both FXTHU and FXTHL are -10°C or less, the absence of the fixing assembly will be indicated (E813).
CHAPTER 6 FIXING SYSTEM 2. Fixing Heater Safety Circuit (on the power supply circuit; E808) The fixing heater safety circuit is found in the power supply assembly, and serves to check the upper and lower fixing heaters for a fault. a. When the fixing heater safety circuit finds a fault in the upper fixing heater, If the fixing temperature increases abnormally, the power from the power supply assembly to the upper/lower heater will be cut off.
CHAPTER 6 FIXING SYSTEM See Figure 6-202 and the following text for the functions of the circuit: The fixing heater safety circuit in the power supply monitors the upper fixing roller temperature detection signal (FXTHU) at pin No. 14. When increases in the fixing temperature causes the output voltage of the upper thermistor to be about 1.4 V, the output of pin No. 13 of IC101 goes ‘1’, and the signal at pin No. 14 of the fixing heater safety circuit will be ‘1’.
CHAPTER 6 FIXING SYSTEM b. Open Circuit in the Fixing Heater (E004) At the start of temperature control, the printer unit drives the upper fixing heater and the lower fixing heater, one at a time to check the FXSTS signal for an open circuit in the fixing heaters. The fixing assembly error detection circuit detects AC current flowing through the fixing heater.
CHAPTER 6 FIXING SYSTEM III. DISASSEMBLY/ASSEMBLY Make sure of the following when disassembling or assembling the machine: 1. When the printer unit power switch is turned off, the fans will operate for about 30 min to cool the machine (so as to prevent caking of toner).
CHAPTER 6 FIXING SYSTEM A. Fixing Assembly 1. Construction The fixing assembly serves to fuse toner into the fibers of paper, and constructed as shown in Figure 6-301 (cross sectional view).
CHAPTER 6 FIXING SYSTEM 2) Place the fixing assembly on the guide as shown. 2. Removing the Fixing Assembly Caution: If the duplexing unit is mounted, be sure to remove it before removing the fixing assembly. 1) Open the delivery cover. 2) Shift the two fixing assembly locking levers and the releasing lever in the direction of the arrows; then, lift the fixing assembly slightly, and detach it to the front.
CHAPTER 6 FIXING SYSTEM 4) Push down the fixing assembly 1 to place it correctly. Then, shift up the levers 2 to secure it in place. 2) Remove the three screws, and detach the upper thermal switch. q q w w q Screws w Thermal switch Figure 6-308 Figure 6-306 5) If you removed the duplexing unit, mount it. 6) Close the lower left cover. 4. Removing the Upper Thermal Switch 1) Disengage the two claws, and remove the fixing cover 1. 5. Removing the Upper Thermistor 1) Perform step 1) on p.
CHAPTER 6 FIXING SYSTEM 3) While pushing the claws with a highaccuracy screwdriver, pull up the fixing assembly inlet guide to the front to detach. 5) Remove the screw, and detach the upper thermistor. q w q w q Claw w Fixing assembly inlet guide Figure 6-310 q Screw w Upper thermistor 4) Disconnect the connector (white). Figure 6-312 6.
CHAPTER 6 FIXING SYSTEM 2) Remove the two screws, and detach the thermal switch cover. q 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). w q Screws w Thermal switch cover q Figure 6-314 q Connector 3) Remove the three screws, and detach the lower thermal switch. q Figure 6-316 3) Disengage the three claws, and disconnect the connector cover.
CHAPTER 6 FIXING SYSTEM 4) Slide the fixing assembly lower cover to the right to detach. q 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 w q Lower cover Figure 6-318 5) Remove the screw, and detach the lower thermistor. q Screw w Lead wire Figure 6-320 w q 3) Using the contact extracting tool (RY9-0099), remove the heater contact from inside the connector.
CHAPTER 6 FIXING SYSTEM 4) Remove the two screws, and pull out the connector; then, pull out the lead wire. 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 w e q Screws e Lead wire w Connector w q Figure 6-322 5) Remove the screw, and remove the heater metal fixing; then, pull out the upper heater slowly.
CHAPTER 6 FIXING SYSTEM 4) Remove the two screws, and pull out the connector; then, pull out the lead wire. When securing the lead wire terminal of the fixing heater or the like with a screw, take care not to subject the lead wire to excess force. 10. Removing the Upper Fixing Roller 1) Perform the 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.
CHAPTER 6 FIXING SYSTEM 5) Remove the two screws, and detach the two lead wires and the two contact plates. 7) Remove the grounding ring; then, remove the C-shaped stop ring. w q w e q q Screws w Lead wires e Contact plates q Grounding ring w C-shaped stop ring Figure 6-329 Figure 6-331 6) Remove the two screws, and detach the fixing assembly right cover. 8) Remove the gear; then, remove the bushing and the bearing.
CHAPTER 6 FIXING SYSTEM 9) Remove the screw, and detach the thermal holder together with the upper thermal switch. 11)Remove the two screws, and detach the fixing assembly upper safety. q q w w q Screw w Thermal holder Figure 6-333 q Screws w Fixing assembly upper stay 10)Remove the two screws, and detach the fixing assembly left cover. Figure 6-335 12)Remove the C-shaped stop ring, and remove the bushing and bearing; then, detach the fixing assembly roller.
CHAPTER 6 FIXING SYSTEM 11. Removing the Fixing Assembly Lower Roller 1) Perform the steps on p. 6-17 to remove the upper fixing roller. 2) Remove the C-shaped stop ring, and remove the bushing and the bearing. 4) Remove the bushing and the bearing. w q q q Bushing w w Bearing Figure 6-339 e 5) Remove the two screws, and detach the two upper separation guides; then, detach the lower fixing roller.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS This chapter provides descriptions on the machine’s auxiliary control operations, functions of each operation, relationships between electrical and mechanical systems, and timing at which each associated part is turned on. I. II. III. CONTROL PANEL ...................................7-1 A. Outline................................................7-1 B. Operations..........................................7-1 FANS ......................................................
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CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS I. CONTROL PANEL A. Outline The printer unit’s control panel has ten LEDS, one LCD, eight switches, and one buzzer. The control panel is connected to the printer board, and has the following functions: • Using the LCD, indicates printer unit status and errors. • Using the LEDs, indicates printer unit operations. • In response to a switch input, selects a printing environment, operation mode, utility, and pick-up/delivery slot.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS II. FANS The printer unit is equipped with three fans to cool the inside and to discharge ozone. Figure 7-101 shows the arrangement of the fans. Table 7-101 shows the functions of the fans, filters 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. FM2 FM1 FM3 Figure 7-201 7-2 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS Notation FM1 Name Heat discharge fan 1 Filter Air FM2 Heat discharge fan 2 Air FM3 Heat discharge fan 3 Ozone Function Discharges exhaust from around the fixing assembly and the feeding assembly. Discharges exhaust from around the intermediate transfer drum. Discharges heat from around the scanner Error code E805 E806 E807 Table 7-201 Printer unit power switch ON WMUP Printer unit power switch OFF STBY INTR COPY LSTR STBY 30 min (approx.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS III. POWER SUPPLY A. Power Supply The low-voltage power supply circuit in the power supply generates +24 VB and +5 V DC power needed by the printer unit. +24 VB is used as it is as the source of power by the heat discharge fan 1 and the heat discharge fan 2.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS Power supply Low-voltage power supply circuit +24VB +5V +5VS Main relay PCB DC controller PCB Right cover Black toner cartridge detecting switch switch +5V Sensor Cartridge motor +24VAR SW671 Heat discharge fan 1/heat discharge fan 2 /P5SAVE P5SAVE Developing rotary motor PCB Sensor Developing rotary motor/solenoid +24UH +24VB +24UH Laser driver sensor/BD PCB +5R Solenoid/ clutch/pickup motor +24VB P5SAVE +24UH +24UH +24UH Loads +5V P5S
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS B. Remote Switch When the machine’s printer unit power switch is turned off, the low-voltage power supply circuit sends the power-off signal (POFF) to the DC controller PCB. Thereafter, when the printer unit is ready for power-off, the DC controller PCB causes the power-off control signal (PCONT) to go ‘1’, thereby turning off the switching transistor of the power supply circuit to stop +5 V and +24 VB power.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS C. Protective Mechanisms The +24 VB power supply circuit and the +5 V power supply circuit are equipped with an overcurrent protective mechanism and an overvoltage protective function, which automatically shuts off output voltage to prevent damage to the power supply circuits in the event that a load should suffer a short circuit or overcurrent/overvoltage.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS D. Power Save Mode When a power save command arrives from the printer board, the D-CPU (IC201) uses the GA (IC204) to cause the power save command signal (PSVE*) to go ‘0’, and sends the result to the main relay PCB, turning off the FET switch on the main relay PCB to stop +24 UH.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS IV. DISASSEMBLY/ASSEMBLY Make sure of the following when disassembling or assembling the machine: 1. When the printer unit power switch is turned off, the fans will operate for about 30 min to cool the machine (so as to prevent caking of toner).
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS A. Fans 1. Removing the Heat Discharge Fan (FM1; printer unit) 1) Perform the steps on p. 3-16 to remove the rear cover. 2) Disconnect the connector 4) Disengage the two claws, and remove the heat discharge fan 1 together with the thermistor holder. w q q Claws q wHeat discharge fan 1 Figure 7-403 5) Disengage the two claws, and slide the holder cover to detach the thermistor.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. Removing the Heat Discharge Fan (FM2; printer unit) 1) Perform the steps on p. 3-16 to remove the rear cover. 2) Disconnect the connector, and disengage the two claws; then, detach the heat discharge fan 2. 2) Disengage the two claws, and detach the duct cover. w e q q q Claws w Duct cover w Figure 7-406 3) Slide the heat discharge fan 3 by sliding it upward.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 4. Replacing the Air Filter (FM1/2) 1) Open the exhaust vent of the printer unit. 5. Replacing the Ozone Filter (FM3) 1) Open the right cover of the printer unit. Ozone filter holder Exhaust vent Figure 7-410 Figure 7-408 2) Slide the lid of the ozone filter holder. 2) Remove the existing air filters. Slide. Lid Figure 7-411 Air filters Figure 7-409 3) Fit the new air filters. 7-12 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 3) Remove the existing ozone filter. B. Power Supply Assembly 1. Removing the Printer 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 disconnect the five connectors; then, detach the power supply assembly. Ozone filter w Figure 7-412 4) Fit the new ozone filter. 5) Slide the lid of the ozone filter holder back on.
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CHAPTER 8 INSTALLATION This chapter provides instructions on how to install the machine and its accessories. I. II. SELECTING THE SITE............................8-1 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 COPYRIGHT © 1999 CANON INC. III. IV. V. C. Selecting the Type of Message for the Printer Unit.............
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CHAPTER 8 INSTALLATION I. SELECTING THE SITE Check the site against the following requirements; if possible, pay a visit to the user’s before delivering the machine. 1. There must be a power outlet with the rated voltage (±10%) and that may be used exclusively by the machine. Make sure it will not be 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.
CHAPTER 8 INSTALLATION 3. Avoid areas near a source of fire, areas subjected to dust or ammonium gas, and areas exposed to direct sunshine. As necessary, provide curtains. 4. Make sure the room will be kept well-ventilated. Note: The level of ozone generated by the machine will not affect the health of the individuals working around it. Some individuals, however, may find the odor to be unpleasant if the machine is used for a long time in a poorly ventilated room, indicating the importance of ventilation.
CHAPTER 8 INSTALLATION II. UNPACKING AND INSTALLATION Bringing in a piece of metal from a cold to warm place can cause droplets of water to form on its surface. Such a phenomenon is known as condensation, and a printer unit suffering condensation can generate blank prints. If the printer unit has just been brought in from a cold place, leave it alone for at least one hour before unpacking and installing it. A. Unpacking the Printer Unit No. 1 Work Unpack the printer unit.
CHAPTER 8 INSTALLATION B. Installing the Printer Unit No. 1 Work Open the front door, and remove the orange stopper q. While pushing the white button w, open the green releasing lever e, and remove the spacer r. Remarks Caution: Store away the orange stopper q for possible relocation of the printer unit in the future. 2 3 1 4 2 8-4 Shift he green releasing lever back to its initial position, and close the front door. COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 8 INSTALLATION No. 3 Work Shift down the drive releasing lever found at the lower left of the fixing assembly in the direction of the arrow; then, pull out the protective film. Remarks Releasing lever Protective film Drive releasing lever 4 Close the printer unit delivery cover. 5 Connect the power plug. 6 Push the power switch found at the lower left of the printer unit to ON. 7 Open the front door, and push up the blue releasing lever in the direction of the arrow.
CHAPTER 8 INSTALLATION No. 8 Work Take out the black toner cartridge from its protective bag. Holding it as shown, shake it five to six times to even out the toner inside. 9 Place the black toner cartridge on a level place; while holding the cartridge, pull out the sealing tape. 10 Holding the black toner cartridge as shown, match it against the inside of the slot; then, push it fully to the end. 8-6 COPYRIGHT © 1999 CANON INC. Remarks CANON 660/2100 REV.0 FEB.
CHAPTER 8 INSTALLATION No. 11 Work While pushing the white button q, open the green releasing lever w. Remarks 1 2 12 Take out the drum cartridge from the protective bag. 13 Shift up the handle of the drum cartridge; then, holding it as shown, fit it in the drum slot. 14 Match here to insert. Holding the protective cover as shown, shift the handle back to its initial position; then, push the drum cartridge straight in with care. 1 2 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 8 INSTALLATION No. 15 Work After fully inserting the drum cartridge, remove the protective cover. Remarks Caution: Store away the protective cover for possible relocation of the machine in the future or when taking the drum cartridge out of the printer unit. 16 Shift the green releasing lever back to its initial position, and then put the blue releasing lever back to its initial position.
CHAPTER 8 INSTALLATION No. 18 Work Place the yellow color toner cartridge on a level place; then, holding the cartridge, pull out the sealing tape. 19 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.) Remarks Color toner replacement cover Color marker Turret button 20 Open the color toner replacement cover, and shift the blue locking lever on the right of the turret to the right.
CHAPTER 8 INSTALLATION No. 21 Work Hold the yellow toner cartridge as shown (level), and insert it fully to the end. 22 While pushing the yellow toner cartridge toward the rear, shift the locking lever back to its initial position to secure it in place. 23 Close the color toner replacement cover. 24 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.
CHAPTER 8 INSTALLATION C. Making Settings and Checking Images and Operations No. 1 2 Work Slide fully out the cassette 1. Remarks Remove the stopper and the protective sheet and the plastic bag containing paper size card and label from the inside of the cassette. Protective sheet Stopper 2 Plastic bag containing the paper size card and label COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 8 INSTALLATION No. 3 Work Adjust the paper guide to suit the size of the paper used most by the user. The pick-up cassette is equipped with a paper guide on its left end and the front and rear of its right side. Lift the front of the paper guide on the left end to remove; then, position it to suit the size of the paper. Remarks 1 2 Turn the locking lever of the paper guide on the right to unlocking position q; then, position it to suit the size of the paper w.
CHAPTER 8 INSTALLATION No. 5 Work While pushing down on the right side of the paper, check to make sure that the stack has not exceeded the limit marking. Remarks Stack limit marking 6 Attach the label to the paper size card to indicate the size of the paper placed in the cassette; then, fit the paper size card in the slot found at the front left of the cassette. 7 Push the cassette fully inside. Perform the same for the cassette 2.
CHAPTER 8 INSTALLATION D. Selecting the Type of Message for the Printer Unit If you have installed the PS/PCL Board to the printer unit, you must select the type of message appearing on its control panel. • EUROPE for service maintenance • JAPAN not used • UNITED STATES for user maintenance • UNKNOWN not used • EUROPE2 not used • JAPAN2 not used • UNITED STATES2 for service maintenance The default setting is UNITED STATES (i.e., for user maintenance).
CHAPTER 8 INSTALLATION No. 9 10 11 12 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.
CHAPTER 8 INSTALLATION III. RELOCATING THE MACHINE If the machine must be moved by truck or any other means of transportation after installation, perform the following steps. The printer unit is designed to rotate its fans for 30 min after the power switch is turned off to prevent overheating inside it. Be sure that the fans are not rotating before starting the work. No. 1 2 Work Take out the toner cartridges (Y, M, C, Bk).
CHAPTER 8 INSTALLATION IV. INSTALLING THE DUPLEXING UNIT No. 1 2 3 Work Turn off of the printer unit. Unpack the duplexing unit. Remove the tape, stopper, and spacers from the duplexing unit. Remarks Remove the tape. Remove the stopper. Remove the spacers. 4 Open the printer assembly delivery cover. Caution: The areas near the fixing assembly and the delivery assembly behind the printer unit delivery cover are hot, possibly burning the skin upon contact.
CHAPTER 8 INSTALLATION No. 5 Work Hold the duplexing unit as shown, and insert it into the slot for the duplexing unit. (When inserting it halfway, put your thumbs on its both sides; then, push it fully inside.) Remarks Caution: 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. 6 8-18 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.
CHAPTER 8 INSTALLATION No. 7 Work When taking out the duplexing 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 Caution: Do not push on the metal plate found at the back of the duplexing unit; otherwise, the plate may deform to cause pick-up faults or jams. Locking lever COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 8 INSTALLATION V. INSTALLING THE VERTICAL FEED CASSETTE (A4R, LTRR, B5R, A5R) No. 1 2 Work Unpack the vertical feed cassette. Remove the stopper and the protective sheet from inside the vertical feed cassette. Remarks 2 1 3 Slide out the cassette 1 (upper; standard); then, while shifting up the blue lever with your finger, lift the cassette 1 slightly to remove. Blue lever 8-20 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 8 INSTALLATION No. 4 Work Match the groove in the bottom of the vertical feed cassette and the left side with the guide on the printer unit to set the cassette to the printer unit. Remarks Caution: 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).
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CHAPTER 9 MAINTENACE AND SERVICING This chapter discusses those of the machine’s parts that require inspection and maintenance. I. II. PERIODICALLY REPLACED PARTS.......9-1 CONSUMABLES AND DURABLES ........9-1 COPYRIGHT © 1999 CANON INC. III. BASIC SERVICING CHART ....................9-2 CANON 660/2100 REV.0 FEB 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
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CHAPTER 9 MAINTENANCE AND SERVICING I. PERIODICALLY REPLACED PARTS The printer unit does not have parts that must be replaced on a periodical basis. II. CONSUMABLES AND DURABLES December 31, 1998 No. Parts ame 1 Intermediate transfer drum unit 2 Fixing assembly 3 Q’ty Life (copies) Parts Nol.
CHAPTER 9 MAINTENANCE AND SERVICING III. BASIC SERVICING CHART The printer unit does not have parts that require periodical servicing. The following work is recommended to prolong the life of each part and, ultimately, the life of the printer unit itself. Items to Clean Unit Remarks Part Multifeeder roller Cassette pick-up roller Feeding roller 1 Feeding roller 2 Separation roller Separation pad Use lint-free paper or alcohol.
CHAPTER 9 MAINTENANCE AND SERVICING Work as follows: Item Density sensor Pre-exposure LED 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. Cleaning brush Detecting window Registration roller assembly COPYRIGHT © 1999 CANON INC. When replacing each drum cartridge, clean the registration roller assembly.
CHAPTER 9 MAINTENANCE AND SERVICING Item Separation static eliminating Description Remove the separation static eliminator from the printer unit. Then, move the cleaning lever in the direction of the arrow several times to clean it. Cleaning lever Note: After cleaning, be sure to fit the cleaning lever in the static eliminator before mounting it back to the printer unit.
CHAPTER 9 MAINTENANCE AND SERVICING Item Toner catch tray Description Disengage the two claws of the toner catch tray cover, and slid out the toner catch tray. Toner catch cover Claws Toner catch tray Remove any cake of toner. However, if the cake of toner cannot be removed, replace the toner catch tray. COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING This chapter provides standards/adjustments, instructions on how to troubleshoot faulty images, malfunctions, and feeding faults, shows the arrangement/functions of electrical parts, and explains service mode and self diagnosis. I. II. III. IV. V. STANDARDS AND ADJUSTMENTS .....10-1 A. Electrical System .............................10-1 TROUBLESHOOTING IMAGE FAULTS ................................................10-10 A. Making Initial Checks .....................10-10 B.
Guide to Tables The tables used in this Service Handbook have been prepared from flow charts; study the sample table below. AC power is absent. Cause Power plug Covers Power source Step Check 1 Is the power plug connected to the outlet? Are the front door and/or delivery 2 cover closed properly? Is the rated voltage (100 VAC) pre3 sent at the outlet? 4 Is the rated voltage present between J 1-1 and J 1-2? Yes/No Action NO Connect the plug. NO Close the door and/or cover properly.
CHAPTER 10 TROUBLESHOOTING I. STANDARDS AND ADJUSTMENTS A. 1 Electrical System When Replacing the DC Controller PCB • Without the Reader Unit Installed (with the printer board installed) 1) Connect the power plug to the power outlet; and while 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.
CHAPTER 10 TROUBLESHOOTING • With the Reader Unit Installed 1) Perform the steps under VIII.C.4. “Removing the DC Controller PCB” in Chapter 4 to remove the DC controller PCB. 2) Mount the new DC controller PCB. 3) 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 the copier operates normally.
CHAPTER 10 TROUBLESHOOTING 2 Checking the Photointerrupters The machine’s photointerrupers may be checked either using a conventional meter or in service mode (by operating on the control panel of the printer unit). (If the reader unit is installed, you may use the control panel of the reader unit.) a. 1) 2) 3) Using a Meter SET the meter range to 30 VDC. Connect the - probe of the meter to GND on the DC controller PCB.
CHAPTER 10 TROUBLESHOOTING Note: 1. The notation “zz” shown on the display (2nd row) is for use at the factory for checks and is not relevant to servicing work. 2. Each sensor has its own response time, some requiring as much as about 5 sec. Be sure to allow an adequate period of time before making a decision on each sensor. 3. If multiple sensors are turned on at the same time, the result will be the sum of the codes obtained for all sensors (in hexadecimal notation). 4.
CHAPTER 10 TROUBLESHOOTING No. Name Meter probe (+) Service Printer unit mode panel Reader unit panel Checks (normal as described) No. Name Meter probe (+) Service Printer unit mode panel Reader unit panel Checks (normal as described) COPYRIGHT © 1999 CANON INC. PS1 Registration paper sensor J212-10 01 (display reading), xx (display position) DC-CON, P001 bit 0 PS3 *1 Developing rotary position sensor J207-5 PS5 Separation sensor While in standby, when the detecting lever is • pushed down, ‘0’.
CHAPTER 10 TROUBLESHOOTING No. Name PS18 Pick-up unit cover sensor PS19 *1 Multifeeder tray last sheet sensor Meter probe (+) Service Printer unit mode panel Reader unit panel Checks (normal as described) J210-16 J208-3 While in standby, the pick-up unit cover is • opened, ‘0’. • closed, ‘1’. While in standby, when the roll under PS19 is rotated, alternately ‘0’ and ‘1’. While in standby, remove the duplexing unit, and move the light-blocking plate to the sensor, and put the duplexing unit back in.
CHAPTER 10 TROUBLESHOOTING No. Name Meter probe (+) Service Printer unit mode panel Reader unit panel Checks (normal as described) No. Name Meter probe (+) Service Printer unit mode panel Reader unit panel Checks (normal as described) COPYRIGHT © 1999 CANON INC. PS30 Upper left cover sensor J220-A4 PS1201 Cassette 2 sensor PS1202 Cassette 1 sensor J210-10 J210-6 While in standby, when the upper cover is • opened, ‘0’. • closed, ‘1’. While in standby, when the cassette 2 is • slid out, ‘0’.
CHAPTER 10 TROUBLESHOOTING No. Name Meter probe (+) Service Printer unit mode panel Reader unit panel Checks (normal as described) No.
CHAPTER 10 TROUBLESHOOTING No. Name Meter probe (+) Service Printer unit mode panel Reader unit panel Checks (normal as described) PS1903 Fixing delivery sensor 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. *1: Open the right cover, and use the door switch actuator. *2: Found on the duplexing driver PCB. COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 10 TROUBLESHOOTING II. TROUBLESHOOTING IMAGE FAULTS A. Making Initial Checks 1. Site Environment a. The voltage must be as rated (±10%). b. The machine must not be in a high-temperature/-humidity environment (near water faucet, water boiler, humidifier), or it must not be in a cold place. There must not be a source of fire nearby, and the machine must not be subjected to excess dust. c. The machine must not be subjected to ammonium gas. d. The machine must not be exposed to direct sunshine.
CHAPTER 10 TROUBLESHOOTING 5. Placement of Print Paper a. Print paper must be placed in the cassette or the multifeeder tray in an appropriate volume and in correct orientation. b. Transparencies must be placed on the multifeeder tray in the correct orientation. 6. Checking the Durable Parts a. Check with the consumables table, and replace parts that reached the end of their lives. 7.
CHAPTER 10 TROUBLESHOOTING B. Guide to Test Prints for the Printer Unit The printer unit contains the test print patterns (horizontal lines) of four colors (yellow, magenta, cyan, and black) shown in Figure 10-202. Generate test prints if a problem occurs in the printer unit to find out its cause. To generate a test print without a printer board, turn on the power while holding down the Test Print switch. Then, press the switch when the printer unit has entered standby state.
CHAPTER 10 TROUBLESHOOTING Output direction Yellow Magenta Cyan Black Figure 10-202 Reference: If the 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). COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING C. No.
CHAPTER 10 TROUBLESHOOTING 1 The print is too light. Cause Step Checks 1 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? Black toner cartridge 2 High-voltage PCB 1 (inadequate black developing bias output) 3 Secondary pretransfer charging assembly 4 Intermediate transfer drum unit 5 High-voltage PCB 2 (inadequate pretransfer charging bias output) 6 COPYRIGHT © 1999 CANON INC.
CHAPTER 10 TROUBLESHOOTING Cause Contact (for color developing bias) High-voltage PCB 1 (inadequate color developing bias output) Step Checks 7 Is the contact for the color developing bias for the printer unit soiled? 8 Open the front cover while toner is being developed on the photosensitive drum (about 20 sec after the start of test printing), and take out the black toner cartridge. Then, take out the drum cartridge, and check the toner image on the surface of the photosensitive drum.
CHAPTER 10 TROUBLESHOOTING 2 The print is too dark.
CHAPTER 10 TROUBLESHOOTING Cause Connector (cartridge motor drive) Cartridge motor (M3) High-voltage PCB 1 DC controller PCB 4 Step Checks 5 Are the connectors J5001 and J5003 on the high-voltage PCB 1 and the connector J226 on the DC controller PCB connected securely? Turn on the reader unit rear power 6 switch and the control panel power soft switch. Is the voltage between the connector J5003-1 (+24 UH) on the high-voltage PCB 1 and the nearby GND 24 V? Replace the high-voltage PCB 1.
CHAPTER 10 TROUBLESHOOTING 5 The print has a soiled image/soiled back. Cause Step Checks Yes/No Action Cassette pick1 Does the soiling have a specific YES See Table 10-202. up roller, interval (as of the diameter of the Identify the soiled Registration cassette pick-up roller, registration roller, and clean it. If roller, Lower roller, lower fixing roller, feeding the dirt cannot be fixing roller, roller 1/2, etc.)? removed, replace it. Feeding roller 1/, Etc.
CHAPTER 10 TROUBLESHOOTING Cause ITD cleaning roller drive assembly ITD cleaning roller locking/unlocking solenoid (SL1) Step Checks Yes/No Action YES Replace the worn or 8 Is the drive gear or the like used to transmit locking/unlocking drive of cracking part. the ITD cleaning roller worn or cracked? Is the cam used to lock/unlock the 9 YES Replace the worn or ITD cleaning roller worn or cracked? cracking part.
CHAPTER 10 TROUBLESHOOTING Problem part Cassette pick-up roller Separation roller Feeding roller 1 Feeding roller 2 Multifeeder 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 Development White Soiled spot back ✓ Faulty fixing ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ *Approximate
CHAPTER 10 TROUBLESHOOTING 6 The print has vertical bands/lines (sub scanning direction). Cause Photosensitive drum Upper fixing roller 7 Step Checks Yes/No Action 1 Are there scratches in the peripheral YES Replace the photosendirection (sub scanning direction) of sitive drum cartridge. the photosensitive drum? Are there scratches in the peripheral YES Replace the upper fix2 direction (sub scanning direction) of ing roller.
CHAPTER 10 TROUBLESHOOTING 8 The print has horizontal bands/lines (main scanning direction). Cause Photosensitive unit Upper fixing roller 9 Step Checks Yes/No Action 1 Are there scratches in the horizontal YES Replace the photosendirection (main scanning direction) sitive drum cartridge. of the photosensitive drum? Are there scratches in the horizontal YES Replace the upper fix2 direction (main scanning direction) ing roller.
CHAPTER 10 TROUBLESHOOTING 11 The print has white spots. Cause Step Checks Yes/No Action Toner cartridge 1 Does any of the developing cylinYES Replace the problem ders of the toner cartridge have a cartridge. fault? Does the photosensitive drum or the YES Replace the photosenPhotosensitive 2 drum unit primary charging roller have a fault? sitive drum cartridge. Secondary Does the unlocking mechanism of 3 YES Replace the problem transfer belt the secondary transfer belt assempart.
CHAPTER 10 TROUBLESHOOTING 13 The print has a distorted image/displaced color. Cause Drum motor drive assembly Laser/scanner assembly DC controller PCB Step Checks Yes/No Action 1 Is the drive gear between the drum YES Replace the cartridge and the drum motor or worn/cracking gear. between the intermediate transfer drum and the drum motor worn/cracked? Are the connectors J1001, J2, and 2 NO Connect them securely. J901 of the laser/scanner assembly connected securely? Replace the laser/scanner assembly.
CHAPTER 10 TROUBLESHOOTING 14 The print has an uneven image.
CHAPTER 10 TROUBLESHOOTING 15 The print has dots. Cause Step Checks Yes/No Action Secondary 1 Is the charging roller of the secYES Replace the secondary transfer belt ondary transfer belt deformed or transfer charging roller. assembly worn? Separation staIs the charging wire of the separa2 YES Replace the separation tic eliminator tion static eliminator broken? static eliminator. Separation staAre the connectors J5600, J5601, 3 NO Connect them securely.
CHAPTER 10 TROUBLESHOOTING III. TROUBLESHOOTING MALFUNCTIONS Caution: 1. If you must measure the voltage using the indicated terminals of a connector, be sure to check the connector for poor contact. 2. When handling PCBs, be sure to touch a metal area of the printer unit before starting the work to discharge the build-up of static electricity, thereby preventing damage to the PCBs. 3. When replacing the DC controller PCB, see p. 10-1. 4.
CHAPTER 10 TROUBLESHOOTING A. Error Codes No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Item E000/E003 E001 E004 E009 E010/E011 E013 E019 E020 E021 E040 E054 E055 E066 E100 E110 COPYRIGHT © 1999 CANON INC. 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 No. 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Item E196/E197/E198 E240 E677/E678/E679 E805 E806 E807 E808 E810 E812 E813 E814 E545/E546 E903 Service Call Check Reader Others CANON 660/2100 REV.0 FEB.
CHAPTER 10 TROUBLESHOOTING 1 E000/E003 Cause Upper thermistor (open circuit) Lower thermistor (open circuit) Upper fixing heater, Upper thermal switch (open circuit) Lower fixing heater, Lower thermal switch (open circuit) Upper/Lower thermistor Upper/lower thermistor Connector Power supply (printer unit) Step Checks Yes/No Action 1 Remove the fixing assembly, and NO Check the wiring from measure the resistance between the the connector J222 on connectors J26F-A4 (FXTHU) and the DC controller PCB J2
CHAPTER 10 TROUBLESHOOTING 2 E001 Cause Upper thermistor (short circuit) Lower thermistor (short circuit) Power supply (printer unit) Step Checks Yes/No Action 1 With the fixing assembly removed, YES Check the wiring from measure the resistance between the the connector J222 on connectors J26F-A4 (FXTHU) and the DC controller PCB J26F-A3 (GND) on the fixing assemto the upper thermistor; bly side. Is it 2 K or less? if normal, replace the upper thermistor.
CHAPTER 10 TROUBLESHOOTING 4 E009 Cause Fixing assembly Connectors 5 Main motor Are the connectors J222 on the DC controller PCB and the connectors J26 of the fixing assembly connected securely? Step Checks Yes/No Action 1 Are the connector J219 on the DC NO Connect the conneccontroller PCB and the relay contors securely. nector J1 connected securely? Does the voltage between the con2 YES Replace the main nector J219-4 (MON*) on the DC motor.
CHAPTER 10 TROUBLESHOOTING 7 E019 Cause Waste toner detection window Connectors Waste toner detecting block (light-emitting/ -receiving section; printer unit) Waste toner detection block (printer unit) 8 Step Checks 1 Is the waste toner detection window of the photosensitive drum soiled? 2 3 4 Are the connector J21 on the DC controller PCB, connectors J631 and J633 of the waste toner sensor, and the relay connector J71 connected securely? Is the light-emitting/-receiving section of the waste toner
CHAPTER 10 TROUBLESHOOTING 9 E021 Cause Step Checks Yes/No Action Toner cartridge 1 Does the shutter of each toner carNO Replace the toner cartridge open properly (as it is set in tridge whose shutter is the printer unit)? not open. Close the toner cartridge cover, and YES Go to step 6. Developing 2 turn off then on the power. Is the rotary motor NO Go to step 3.
CHAPTER 10 TROUBLESHOOTING 10 E040 Cause Connectors Step Checks Yes/No Action 1 Are the connector J213 on the DC NO Connect the conneccontroller PCB, connectors J641, tors. J642, J643, and J647 on the printer side main relay PCB, connectors J671 and J672 on the sub relay PCB, connector J1302 of the holding plate solenoid, and connector J102 of the power supply connected securely? Does the voltage between the conMultifeeder tray 2 YES Replace the multifeednectors J1301-2 (+24 UH) and PCB er tray PCB.
CHAPTER 10 TROUBLESHOOTING 11 E054 Cause Duplexing feeding roller 1 home position sensor lever Duplexing feeding roller drive gear Duplexing driver PCB Step Checks 1 Is the duplexing feeding roller 1 home position sensor lever damaged? 2 Is the drive gear of the duplexing feeding roller worn/cracked? YES Replace the worn/cracking gear. 3 Are the connectors J2003, J2004 and J2007 on the duplexing driver PCB connected securely? Replace the duplexing feeding roller 1 home position sensor.
CHAPTER 10 TROUBLESHOOTING 12 E055 Cause Horizontal registration guide Horizontal registration guide home position sensor (PS25) lever Horizontal registration guide drive gear Duplexing driver PCB Step Checks 1 Is the horizontal registration guide mounted correctly? Is the horizontal registration guide 2 home position sensor lever damaged? Horizontal registration guide home position sensor (PS25) Horizontal motor (M7) Duplexing driver PCB COPYRIGHT © 1999 CANON INC.
CHAPTER 10 TROUBLESHOOTING 13 E066 Cause Step Checks Yes/No Action Connector 1 Are the connectors J801 on the tem- NO Connect the connec(temperature/ perature/humidity sensor and contors securely. humidity sensor) nector J206 on the DC controller PCB connected securely? Replace the temperature/humidity Temperature/ 2 YES End. sensor. Is the problem corrected? humidity sensor NO Replace the DC controller PCB.
CHAPTER 10 TROUBLESHOOTING 15 E110 Cause Connector Laser scanner motor Step Checks 1 Are the connectors J901 on the laser scanner motor PC, relay connectors J40, and connector J211 on the DC controller PCB connected securely? Does the voltage between the con2 nectors J211-7 (SCND) on the DC controller PCB and J211-6 (GND) change from 0 to 17 V or more when the printer unit is turned on? Yes/No Action NO Connect the connectors. YES Replace the laser scanner motor. NO Replace the DC controller PCB.
CHAPTER 10 TROUBLESHOOTING 18 E677/E678/E679 Cause Accessories power Accessories Step Checks Yes/No Action 1 Are the power cables of the accesNO Turn off and then on sories and the communication cable the power. to the printer unit connected secure- YES Replace the ACC conly? troller PCB. 19 E805 Cause Step Checks Yes/No Action Connectors 1 Are the connectors J702 and J706 NO Connect the connec(heat discharge on the developing rotary motor PCB tors.
CHAPTER 10 TROUBLESHOOTING 20 E806 Cause Step Checks Yes/No Action Connectors 1 Are the connectors J703 and J706 NO Connect the connec(heat discharge on the developing rotary motor PCB tors. fan 2 drive and the connector J220 on the DC assembly) controller PCB connected? Connectors (24 Is the connector J701 on the devel2 NO Connect them securely.
CHAPTER 10 TROUBLESHOOTING 21 E807 Cause Step Checks Yes/No Action Connectors 1 Are the connectors J681 and J682 NO Connect the connec(heat discharge on the pre-exposure LED relay PCB tors securely. fan 3 drive and relay connectors J18 and J17, assembly) connectors J645 and J647 on the main relay PCB, and connector J227 on the DC controller PCB connected securely? Are the connectors J641 on the Connectors (24 2 NO Connect them securely.
CHAPTER 10 TROUBLESHOOTING 23 E810 Cause Drum cartridge Step Checks Yes/No Action 1 Is the drum cartridge set in the print- NO Set the cartridge corer unit correctly? rectly, and turn off and then on the printer unit. Drum cartridge 2 Check the drum cartridge switching YES Set the lever to the correct position. If it is switching lever lever on the printer side. Is it displaced or cracked? cracked, replace it.
CHAPTER 10 TROUBLESHOOTING 26 E814 Cause Drum cartridge Step Checks 1 Replace the drum cartridge. Is the problem corrected? Yes/No Action YES End. NO Replace the DC controller PCB. 27 E545/E546 See the Service Manual for the installed Sorter-H1. 28 E903 See the Service Manual for the installed paper deck. 29 SERVICE CALL CHECK READER See the Reader Unit Service Manual. 30 Others Turn off and then on the printer unit. If the problem is not corrected, replace the printer board.
CHAPTER 10 TROUBLESHOOTING B. Faults Not Identified by Error Codes No. 1 3 Item AC power is absent in the printer unit. DC power is absent in the printer unit. (+5 V, +24 VB) +24 UH is absent. 4 +24 VAR is absent. 10-49 15 5 10-50 16 10-50 17 10-51 18 8 The transparency sensor 1/2 is faulty. The face-down tray full sensor is faulty. The pick-up paper size is wrong. The cassette is absent. 10-51 19 9 The cassette has no paper. 10-52 20 10 The multifeeder tray has no paper.
CHAPTER 10 TROUBLESHOOTING 1 AC power is absent in the printer unit. Cause Circuit breaker (printer unit) Printer unit power switch (SW1; Note 2) Power supply (printer unit) Step Checks 1 Remove the power supply of the printer unit, and measure the resistance between both terminals of the circuit breaker. Is it 0 Ω? 2 Remove the power supply of the printer unit, and connect the probes to both terminals of the power supply switch.
CHAPTER 10 TROUBLESHOOTING 2 DC power is absent in the printer unit. (+5V, +24 VB) Cause AC power (printer unit) Fuse (power supply of the printer unit) Power supply (printer unit) Wiring/DC load, DC controller PCB Step Checks Yes/No Action 1 Disconnect the power plug from the NO See 3. “AC power is printer unit, and connect it to the absent in the printer power plug directly. Is AC power preunit.” sent? Turn of the printer unit power 2 NO Replace the fuse of the switch1; in about 2 min, turn it on.
CHAPTER 10 TROUBLESHOOTING 3 +24 UH is absent. Cause DC power (printer unit) Connectors Right cover switch (man relay PCB) Delivery cover/front cover switch (sub relay PCB) Power supply (printer unit) Main relay PCB Step Checks Yes/No Action 1 Disconnect the printer unit power NO 4. “DC power is absent plug from the reader unit connector, in the printer unit.” and connect it to the power plug directly.
CHAPTER 10 TROUBLESHOOTING 4 +24 VAR is absent. Cause DC power supply (printer unit) Step Checks Yes/No Action 1 Disconnect the power plug from the NO See 4. “DC power is printer unit, and connect it to the absent in the printer power outlet directly. Is DC power unit.” present in the printer unit? Are the connector J701 on the Connectors 2 NO Connect the connecdeveloping rotary motor PCB, contors securely.
CHAPTER 10 TROUBLESHOOTING 5 The transparency sensor 1/2 is faulty. Cause Transparency sensor 1/2 (PS1801/PS18 02) +5 V supply line Transparency sensor 1/2 (PS1801/PS18 02) 6 Step Checks Yes/No Action 1 Is the detecting window of the trans- YES Clean the detecting parency sensor 1/2 window.
CHAPTER 10 TROUBLESHOOTING 7 The pick-up paper size is wrong.
CHAPTER 10 TROUBLESHOOTING 9 The cassette is empty. Cause Cassette 1/2 lifter (paper level sensor lever) +5 V supply line Cassette 1/2 paper level sensor Pick-up PCB, DC controller PCB Step Checks Yes/No Action 1 Is the cassette 1/2 lifter (paper level YES Replace the cassette sensor lever) damaged/deformed? Is 1/2 lifter (paper lever the lifter spring displaced? sensor lever). Position the spring correctly. 2 Are the connectors J1201 on the NO Connect the connectors.
CHAPTER 10 TROUBLESHOOTING 11 The multifeeder paper width size is wrong. Cause Connectors Step Checks Yes/No Action 1 Are the connectors on the DC conNO Connect the connectroller PCB, relay connector J33, tors securely. and connector J34 of the multifeeder paper width sensor connected securely? Is there a fault in any of the parts of Multifeeder unit 2 NO Replace the problem the multifeeder unit? part. Replace the multifeeder paper width YES Replace the sensor. Multifeeder 3 sensor.
CHAPTER 10 TROUBLESHOOTING 13 The color toner cartridge is not set properly. Cause Cartridge locking lever (printer unit) Connectors Cartridge locking lever sensor DC controller PCB Step Checks 1 Is the cartridge locking lever of the printer unit displaced or cracked? 2 3 Are the connector J1902 of the cartridge locking lever sensor, connector J207 on the DC controller PCB, and connectors J675 and J676 on the sub relay PCB connected securely? Replace the cartridge locking lever sensor.
CHAPTER 10 TROUBLESHOOTING 15 The black toner cartridge is absent. Cause Black toner cartridge Step Checks Yes/No Action 1 Is the black toner cartridge set in the NO Set the cartridge propprinter unit properly? erly, and turn off and on the power. Black toner 2 Is the black toner cartridge switch YES Replace the lever, or position it correctly.
CHAPTER 10 TROUBLESHOOTING 17 The waste toner case is full. Cause Drum cartridge Drum drive assembly Step Checks Yes/No Action 1 Replace the drum cartridge? Is the YES Replace it. problem corrected? (The rotating mechanism of the stirring plate inside the drum cartridge may be faulty.) Is any part of the drum drive assem- YES Replace the problem 2 bly of the printer unit faulty? part. 18 The duplexing unit fails to turn on.
CHAPTER 10 TROUBLESHOOTING 20 The duplexing motor is faulty. Cause Step Checks Connector 1 Is the connector J2004 on the (duplexing duplexing driver PCB connected motor drive sigsecurely? nal line) Duplexing 2 Replace the duplexing motor. Is the problem corrected? motor (M8) Duplexing dire PCB Yes/No Action NO Connect it securely. YES Replace the motor. NO Replace the duplexing driver PCB. 21 The reversal roller releasing solenoid is faulty.
CHAPTER 10 TROUBLESHOOTING IV. TROUBLESHOOTING FEEDING PROBLEMS A. Paper Jams Inside the printer unit, jams tend to be limited to the following locations: q w e r t Multifeeder pick-up assembly Cassette pick-up assembly Transfer/fixing assembly Delivery assembly Duplexing unit 4 3 1 5 2 Figure 10-401 The troubleshooting procedures that follow are arranged according to location of jams.
CHAPTER 10 TROUBLESHOOTING 1 Multifeeder Pick-Up Assembly Cause Multifeeder pick-up roller Drive gear Step Checks Yes/No Action 1 Is the multifeeder pick-up roller YES Clean or replace the soiled, worn, or deformed? roller. Remove the multifeeder pick-up 2 YES Replace the damaged assembly, and check the drive part. gears. Is there any damaged part? Disconnect the connector J1303 of Multifeeder 3 NO Replace the multifeedthe multifeeder pick-up clutch from pick-up clutch er pick-up clutch.
CHAPTER 10 TROUBLESHOOTING 2 Cassette Pick-Up Assembly Cause Cassette pickup roller, feeding roller 1 Step Checks 1 Is the cassette pick-up roller or the feeding roller 1 worn/deformed? Drive gear 2 Pick-up paper sensor (PS17) 3 Pick-up paper sensor (PS17) Connector (pick-up motor (M5) drive) 4 Pick-up motor (M5) Feeding roller 2 6 Connector (feeding clutch CL2 drive supply line) Feeding clutch (CL2) 8 Pick-up PCB 10 5 7 9 Yes/No Action YES Replace the parts.
CHAPTER 10 TROUBLESHOOTING 3 Transfer/Fixing Assembly A. After executing test printing in service mode, a jam occurs without the leading edge of print paper reaching the secondary transfer belt assembly.
CHAPTER 10 TROUBLESHOOTING B. After executing test print in service mode, the leading edge of print paper reaches the secondary transfer belt assembly. Or, the print paper is wrapping around the intermediate transfer drum.
CHAPTER 10 TROUBLESHOOTING C. After executing test printing in service mode, the leading edge of print paper jams at a location after the secondary transfer belt.
CHAPTER 10 TROUBLESHOOTING 4 Delivery Assembly Cause Face-up flapper Face-up/facedown delivery roller Step Checks 1 Is the face-up flapper soiled, scratched, or coated with toner? 2 Is the face-up/face-down delivery roller worn? 3 Does the face-up/face-down delivery roller rotate smoothly? Face-down tray delivery paper sensor (PS11) 4 Is the face-down tray delivery paper sensor lever damaged or deformed? Is the sensor lever displaced? 5-V line (facedown tray delivery paper sensor PS11) 5 Face-dow
CHAPTER 10 TROUBLESHOOTING 5 Duplexing Unit Cause Step Checks Rollers 1 Are the rollers inside the duplexing (duplexing unit) unit coated with paper lint or dust? Feeding guide Is there foreign matter or burrs on 2 the feeding guide? Yes/No Action YES Remove the paper lint and dust. YES Remove any foreign matter. If burrs are found, replace the feeding guide. Is the reversing roller or the duplexYES If worn or deformed, replace the roller.
CHAPTER 10 TROUBLESHOOTING B. Faulty Feeding 1 Double Feeding Cause Step Checks 1 Does the problem occur when the source is a cassette? Yes/No Action YES Go to step 2.
CHAPTER 10 TROUBLESHOOTING 2 Wrinkles/Bending Cause Fixing assembly inlet guide Lower fixing roller Step Checks 1 Execute test printing in serviced mode; then, open the front cover before the print paper enters the fixing assembly.
CHAPTER 10 TROUBLESHOOTING 4 Wrinkles (duplexing mode) Cause Feeding roller assembly, Horizontal registration guide Roller (inside the duplexing unit) Paper guide 10-68 Step Checks 1 Is the feeding roller assembly or the horizontal registration guide coated with paper lint or dust? Yes/No Action YES Clean the problem part. 2 Is any of the rollers inside the duplexing unit worn or deformed? YES Replace any worn or deformed roller. 3 Check the paper feeding path.
CHAPTER 10 TROUBLESHOOTING V.ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING A. Sensors PS30 PS11 PS10 PS3 PS1903 PS1901C PS1902 PS5 PS1802 PS17 PS1 PS1208 PS1801 PS1202 PS1302 PS1301 PS18 PS1206 PS1205 PS19 PS29 PS1207 PS1201 PS1204 PS1203 Figure 10-501 10-70 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING Symbol Name Photointerrupter Notation PS1 PS3 PS5 PS10 PS11 PS17 PS18 PS19 PS30 PS1201 PS1202 PS1203 PS1204 PS1205 PS1206 PS1207 PS1208 PS1301 PS1302 Description Registration paper sensor Developing rotary position sensor Separation sensor Face-down tray full paper sensor Face-down tray delivery paper sensor Pick-up assembly paper sensor Pick-up unit cover sensor Multifeeder tray last sheet sensor Upper left cover sensor Cassette 2 sensor Cassette 1 sensor Cassette 2 paper lev
CHAPTER 10 TROUBLESHOOTING B. Thermistors, Lamps, and Heaters SW644 SW642 TPU THU SW671 SW673 LED1 HU SW672 TPL THL SW641 HL SW201 SW1601 SW1602 SW1603 SW202 SW1604 SW1601 SW1602 SW1603 SW1604 SW1 Figure 10-502 10-72 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING Symbol Name Thermistor Notation THU THL Description Upper fixing thermistor Lower fixing thermistor Thermal switch TPU TPL Upper fixing thermal switch Lower fixing thermal switch Lamp LED1 Pre-exposure LED assembly Heater HU HL Upper fixing heater Lower fixing heater Switch SW1 SW201 SW202 SW641 SW642 SW644 SW671 SW672 SW673 SW1601 SW1602 SW1603 SW1604 SW1601 SW1602 SW1603 SW1604 Printer unit power switch Test print switch Reset switch Right cover switch Drum cartr
CHAPTER 10 TROUBLESHOOTING C. Clutches and Solenoids SL5 SL2 SL4 CL4 CL1 SL1 CL3 CL2 SL3 Figure 10-503 Symbol Name Clutch Notation CL1 CL2 CL3 CL4 Description Registration clutch Feeding clutch Multifeeder pick-up clutch Secondary transfer belt clutch Solenoid SL1 SL2 SL3 SL4 SL5 ITD cleaning roller solenoid Face-up solenoid Cassette pick-up solenoid Holding plate solenoid Developing rotary stopper solenoid CL SL Table 10-503 10-74 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 10 TROUBLESHOOTING D. Fans and Motors FM2 M6 M1 FM1 M3 M2 FM3 M4 M5 Figure 10-504 Symbol Name Fan M Motor Notation FM1 FM2 FM3 Description Heat discharge fan 1 Heat discharge fan 2 Heat discharge fan 3 M1 M2 M3 M4 M5 M6 Developing rotary motor Drum motor Cartridge motor Main motor Pick-up motor Laser scanner motor Table 10-504 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING E. PCBs y w @0 e q !6 i r !7 t !9 u !0 #5 !3 !5 !2 !4 !8 #9 !1 o Figure 10-505 10-76 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING Ref.
CHAPTER 10 TROUBLESHOOTING F. Duplexing Unit M8 SL7 SL6 PS26 PS23 M7 PS25 CL5 PS24 q Figure 10-506 Symbol Name Clutch Notation CL5 Description Duplexing feeding clutch Photointerrupter PS23 PS24 PS25 Duplexing feeding roller 1 home positioner Duplexing unit paper sensor Horizontal registration guide home position sensor Reversal paper sensor Duplexing flapper solenoid Reversing roller releasing solenoid Horizontal registration motor Duplexing motor CL SL M Ref.
CHAPTER 10 TROUBLESHOOTING G. Variable Resistors (VR), Light-Emitting Diodes, and Check Pins PCB Of those VRs, LEDs, and check pins used in the copier, those needed in the field are discussed. Caution: Caution: Do not touch the VRs and check pins not discussed herein. They are for the factory only and require special tools and high accuracy. 1. Some LEDs emit dim light even when they are off. It is a normal condition, and must be kept in mind. 2.
CHAPTER 10 TROUBLESHOOTING 2. DC Controller PCB 3 J215 1 6 J214 1 9 J213 1 13 J212 1 7 J211 1 1 10 J210 20 2 J216 J207 J208 J209 J205 A1 1 J227 A11 J226 B1 A12 J206 B11 19 1 8 1 7 1 1 10 12 1 A1 12 1 J232 B12 J217 6 8 1 1 8 J218 J204 10 4 1 1 1 J228 J231 6 J219 SW201 1 JP201 6 B9 B1 A1 7 A9 SW No.
CHAPTER 10 TROUBLESHOOTING 3. Main Relay PCB J644 4 J642 1 J648 J643 1 3 2 6 1 1 5 1 J645 1 J641 4 6 J646 1 B1 A11 J647 A1 SW641 SW No. SW641 SW642 B11 SW642 Name Right cover switch Drum cartridge detecting switch Figure 10-509 4. Sub Relay PCB 2 6 J675 J671 1 1 SW671 1 2 SW673 J674 1 J673 6 1 J676 4 SW No. SW671 SW672 Name Delivery cover/front cover switch Turret button switch Figure 10-510 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 10 TROUBLESHOOTING 5. Cassette Size Detection PCB J1601 1 SW1604 SW1603 SW1602 SW1601 5 SW No. Name SW1601 SW1602 Cassette detecting switch (p. 5-6) SW1603 SW1604 Figure 10-511 10-82 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING VI. SERVICE MODE The modes discussed herein are effective when the printer board (PS/PCL) is installed, and may be started on the control panel of the printer unit. Caution: If the reader unit is installed, service mode must be started by operating on the control panel of the Reader Unit. See the Reader Unit Service Manual. A.
CHAPTER 10 TROUBLESHOOTING Caution: 1. Do not disconnect the power cord while the printer is in service mode. (Be sure to turn off the power first to end service mode; however, do not turn off the power while test mode, read memory mode, or write memory mode is under way.) 2. When the power is turned on normally, various adjustment data in the EEPROM on the DC controller PCB is mounted to the printer unit and the paper is turned on normally, the data stored on the printer board will be lost.
CHAPTER 10 TROUBLESHOOTING C. Main Menu No. 1 2 3 4 5 6 7 8 Main Menu DISPLAY SENSOR MONITOR TEST PAPER FEED READ MEMORY PARAMETER BIAS WRITE MEMORY Table 10-602 • After entering the service mode, the following message is displayed on LCD “DISPLAY”. • If the “MENU” key is pressed, the next item of main menu is displayed on LCD. • If the “MENU” key is pressed while “MESSAGE/NAME” is displayed, “DISPLAY” is displayed again. • If the “MENU” key is pressed, go to the sub menu of each main menu items.
CHAPTER 10 TROUBLESHOOTING 2. SENSOR MONITOR Sensor monitor mode is for displaying the state of the sensors in the paper path of the printer unit. Sub Menu SENSOR MONITORING Description Use it to monitor the state of the sensors used in the printer unit. Turn on the sensor manually; the results of execution will be indicated on the control panel. For ‘xx yy zz’, see Table 10-603. Remarks Table 10-603 shows the display position and the display reading of each sensor.
CHAPTER 10 TROUBLESHOOTING 3. TEST Test mode is for checking while operating the printer unit. Sub Menu DEV-DRV Description IUse it to rotate the developing rotary cartridge and the cylinder for a specific period of time. 1. 2. 3. MAIN-DRV Use it to rotate the intermediate transfer drum and the photosensitive drum for a specific period of time. 1. 2. 3. Remarks Select ‘DEV-DRV’. Using the or key, select ‘YES’. Press the ENTER key to execute. Select ‘MAIN-DRV’. Using the or key, select ‘YES’.
CHAPTER 10 TROUBLESHOOTING 4. PAPER FEED Use it to pick up one sheet of paper from the selected pick-up slot and deliver to the selected delivery slot. Sub Menu PAPER FEED Description Before executing PAPER FEED mode, selectthe source of paper (cassette 1, cassette 2, multifeeder). 1. 2. 3. OUTPUT FACE Before executing PAPER FEED mode, select the destination (face-down delivery, face-up delivery). 4. 5. Remarks Select ‘PAPER FEED’. Using the or key, select the source of paper.
CHAPTER 10 TROUBLESHOOTING 6. PARAMETER Parameter mode is for checking the adjustment data specific to each printer unit and stored in the EEPROM on the DC controller PCB at time of shipment. Normally, it is the data stored in the RAM on the printer board. Changing each data item and executing memory write mode thereafter will update the data in the EEPROM on the DC controller PCB.
CHAPTER 10 TROUBLESHOOTING Sub Menu ADJ-C1 ADJ-C2 ADJ-MF RE-TR-SW Description Use it t adjust the image write start position in main scanning direction when using the cassette 1. Use it t adjust the image write start position in main scanning direction when using the cassette 2. Use it t adjust the image write start position in main scanning direction when using the multifeeder. Use it to enable/disable the use of a remedy against re-transfer occurring in a high humidity environment.
CHAPTER 10 TROUBLESHOOTING 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 transfer drum.
CHAPTER 10 TROUBLESHOOTING 7. BIAS Use this item when adjusting the level of the secondary transfer bias to suit various environmental and printing conditions. Sub Menu TR-N1H Description For a H/H environment, use it to adjust the secondary 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 secondary transfer bias for second side printing of double-sided printing on plain paper.
CHAPTER 10 TROUBLESHOOTING VII. TEST PAGE PRINT MODE The PS/PCL board has 5 types of test print patterns, each one enabling identification of a fault in the image. A. Generating the Test Page 1) While holding down the Menu and Enter keys, turn on the power. 2) Hold down the Menu and enter keys until the message “START SELF-TEST” appears on the control panel of the printer. 3) Wait until the message “READY” appears as in the case of regular operation.
CHAPTER 10 TROUBLESHOOTING 1. Full-color 16 gradations (YMCK) Use the full-color 16-gradation (YMCK) test print to check the gray balance, gradation of each color (YMCK), and fogging. 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. · Regardless of the size of paper, the patches are printed at the center. a. Gray Balance Check to find out if the gray scale is even for all colors. b.
CHAPTER 10 TROUBLESHOOTING 2. Gradation (YMCKRGB) Use the gradation (YMCKRGB) test print to check the gradation of all colors (YMCKRGB) at a glance. 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. Figure 10-702 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB.
CHAPTER 10 TROUBLESHOOTING 3. Full face halftone (Y, M, C, K) Use the halftone test print to check transfer faults, black lines, white lines, and uneven intervals. Note: · The page consists of halftone solids of C, M, Y, and Bk. · Cassette 2 is used as the source of paper. · The page consists of a total of 4 sheets, one each for C, M, Y, and Bk. · Halftone solids are printed within the entire printable area (guaranteed area). a.
CHAPTER 10 TROUBLESHOOTING 4. YMCK vertical stripe Use the vertical test print to check the dark area density of each color, balance between colors, and white lines caused during development. Note: · The page consists of halftone strips of C, M, Y, and Bk. · Cassette 2 is used as the source of paper. · The page consists of a single sheet. · Strips of C, M, Y, and Bk are printed within the entire printable area (guaranteed area). a.
CHAPTER 10 TROUBLESHOOTING 5. Controller Test Chart Use the controller test chart to check the Controller board. 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. Figure 10-705 10-98 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
CHAPTER 10 TROUBLESHOOTING VIII. SELF DIAGNOSIS The microprocessor on the DC controller PCB is quipped with a self diagnostic mechanism which checks the condition of the printer unit (in particular, condition of the sensors). The mechanism runs a check as needed and, upon detection of an error, will indicate an error code on the copier’s control panel. A. Printer unit Code E000 E001 E003 E004 E009 E010 E011 Cause • The fixing assembly warm-up is faulty. • The fixing assembly has overheated.
CHAPTER 10 TROUBLESHOOTING Code Cause The density sensor is faulty. E020 The developing rotary assembly is faulty. E021 The holding plate lifter (multifeeder) is faulty. E040 E054 E055 E066 The duplexing roller of the duplexing unit drive mechanism is faulty. (The duplexing unit is an accessory.) The horizontal registration guide mechanism of the duplexing unit is faulty. (The duplexing unit is an accessory.) The temperature/humidity sensor is faulty. The laser of the scanner unit is faulty.
CHAPTER 10 TROUBLESHOOTING Code E197 E198 E240 Cause The internal communication has an error. The IC on the DC controller PCB has an error. • The communication between the DC controller PCB and the reader controller PCB is faulty. • The communication between the DC controller PCB and the PS/PCL board or between the reader controller PCB and the PS/PCL board is faulty. The bin flapper 1 of the sorter-H1 is faulty. E545*4 *4 The bin flapper 2 of the Sorter-H1 is faulty.
CHAPTER 10 TROUBLESHOOTING Code E805 E806 E807 E808 E810 E812 Cause The heat discharge fan 1 (FM1); used for the fixing assembly and area near the feeding assembly) is faulty. The heat discharge fan (FM2; used for the area around the intermediate transfer drum) is faulty. The heat discharge fan (FM3; used for the area around the scanner) is faulty. The fixing drive circuit/power unit is faulty. The drum cartridge is absent. The intermediate transfer drum (ITD) is absent. The fixing assembly is absent.
CHAPTER 10 TROUBLESHOOTING Note: 1. The EEPROM on the DC controller PCB contains various data (e.g., registration adjustment values) of each machine model. If you are replacing the DC controller PCB, be sure to transfer the data to the new DC controller PCB as instructed under I.A.1. “Replacing the DC Controller PCB” in Chapter 10. 2. Upon detection of E000, E001, E003, E004, E009, or E808, the printer unit issues a service person call and then turns itself off in 20 sec. 3.
APPENDIX A. B. C. GENERAL TIMING CHART.....................A-1 SIGNALS AND ABBREVIATIONS...........A-7 GENERAL CIRCUIT DIAGRAM ............A-15 COPYRIGHT © 1999 CANON INC. D. E. SPECIAL TOOLS...................................A-17 SOLVENTS AND OILS ..........................A-18 CANON 660/2100 REV.0 FEB 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
Download free service manual at http://printer1.blogspot.
A.
Timing Chart during WAIT (2/2) Power ON M-CPU ON command (unit: sec) Sequence WAIT STBY 22 Color developing bias (DC) 10.0 Primary charging (DC) bias 23 (positive) Primary transfer (DC) bias 24 (negative) 2.7 10.0 7.3 10.0 Secondary pre-transfer charging 25 bias (AC) Secondary pre-transfer charging 26 bias (DC) 15.0 Secondary transfer belt clutch 27 (CL4) 2.9 12.4 0.1 Secondary transfer (DC) bias 28 (positive) 0.
Timing Chart 1 during PRINT (1/2) PRINT* signal Sequence Print sequence command (unit: sec) INTR STBY PRINT LSTR STBY Download free service manual at http://printer1.blogspot.com A3, Full-color, 1 Page, Plain Paper 1 Ready to Print indicator 10.0 min. 2 Scanner motor 1.7 3 Vertical sync signal (TOP*) 5.0 Y 4 Re-pick up signal (TOPR*) 5 Upper fixing heater (HU) Printing temp 6 Lower fixing heater (HL) Printing temp 5.0 5.0 M 0.1 Bk C 3.3 0.
Timing Chart 1 during PRINT (2/2) A3, Full-color, 1 Page, Plain Paper Sequence STBY Print sequence command (unit: sec) INTR PRINT LSTR 1.0 21 Black developing bias (AC) 22 Black developing bias (DC) 0.7 0.6 2.0 1.4 3.6 0.4 3.5 0.4 1.1 1.5 3.6 14.0 1.7 24 Color developing bias (DC) 0.8 25 Primary transfer (DC) bias (positive) 26 Primary transfer (DC) bias (negative) 3.6 2.1 23 Color developing bias (AC) 3.2 2.5 0.5 1.
Timing Chart 2 during PRINT (1/2) A4, Horizontal, Full-color, 2 Pages, Plain Paper Sequence Print sequence command (unit: sec) INTR STBY PRINT LSTR STBY Download free service manual at http://printer1.blogspot.com PRINT* signal 1 Ready to Print indicator 10.0 min. 2 Scanner motor 1.7 3 Vertical sync signal (TOP*) Y1 4 Re-pick up signal (TOPR*) 5 Upper fixing heater (HU) Printing temp 6 Lower fixing heater (HL) Printing temp Y2 2.2 2.2 2.2 2.2 M1 M2 2.2 2.2 C1 C2 Bk1 2.2 1.
Timing Chart 2 during PRINT (2/2) A4, Horizontal, Full-color, 2 Pages, Plain Paper Sequence STBY Print sequence command (unit: sec) INTR PRNT LSTR 0.6 21 Black developing bias (AC) 22 Black developing bias (DC) 0.7 0.2 2.0 4.0 2.0 23 Color developing bias (AC) 0.5 0.9 3.5 0.9 0.6 1.5 4.0 14.5 24 Color developing bias (DC) 2.5 0.8 25 Primary transfer (DC) bias (positive) 26 Primary transfer (DC) bias (negative) 4.0 3.1 0.5 1.
APPENDIX B. SIGNALS AND ABBREVIATIONS 1. Inputs to and Outputs from the DC Controller PCB Connector J202 J203 Pin A20 A21 A22 A23 A24 A25 A26 A27 A28 A31 B1 B3 B4 B5 B6 B7 B8 B9 B10 B11 B19 B20 B21 B22 B23 B24 B25 B26 B27 B28 B29 B30 B31 A3 A4 A5 A6 COPYRIGHT © 1999 CANON INC.
APPENDIX Connector J203 J204 J205 J206 J207 J208 J209 A-8 Pin A7 A8 A9 B3 B4 B5 B6 B7 B8 B9 B10 2 4 5 6 7 8 1 3 5 6 8 9 1 3 5 7 8 9 1 5 6 12 3 5 1 2 3 4 5 6 Abbreviation TR2PWM TR1PWM LSYNC* FIXDC TR1DC RVTR1DC CLNDC RVCLNDC CLNAC CORDC CORAC IOTR* IOTT* TSEL4* TSEL3* TSEL2* TSEL1* PD LENB* BSAMPLE BSAMPLE* DBATA DBATA* TMPSNS HUMSNS +24UH DNS DENREF LEDCNT FUSLD* DEVHP RLOCKS FXOUTS MPDFS* MPTWID MDI1 MDO1 MSK1 MSC1 MPWR OPCSNS Name secondary transfer bias control signal primary charging transfer
APPENDIX Connector J210 J211 J212 J213 J214 J215 J216 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 5 7 1 3 7 10 4 5 6 7 3 6 3 2 3 4 5 6 7 8 9 11 12 COPYRIGHT © 1999 CANON INC.
APPENDIX Connector J217 J218 J219 J220 J221 J222 A-10 Pin 3 4 5 2 3 4 5 7 8 9 10 1 2 3 4 A1 A2 A3 A4 A6 A7 A8 A9 B1 B2 B3 B4 B6 B8 B9 1 4 5 7 1 Abbreviation ACTYP POFF PCONT LSIZE4 LSIZE3 LSIZE2 LSIZE1 USIZE4 USIZE3 USIZE2 USIZE1 MSPED1 MSPED2 MRDY* MON* FAN1LK* FAN2LK* FDFULL FMCOPN* RLSROT DEVICH1 DEVPHB DEVPHA DEVPHA* DEVPHB* DEVICH2 STPROT FDOUT* FAN2ON* FAN1ON* CTNLED CTNSNS WTNLED WTNFUL FXTHU 3 FXTHL 5 FXTYP Name power supply type detection signals power-off detection signal power-off c
APPENDIX Connector J223 J224 J225 J226 Pin 3 4 5 6 3 4 5 6 2 3 4 5 6 7 A1 A2 A3 A4 A5 A8 A9 A10 A11 A12 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 COPYRIGHT © 1999 CANON INC.
APPENDIX Connector J227 A-12 Pin A1 A2 A3 A4 A5 A6 B6 B7 B8 B9 B10 B11 Abbreviation CCRGSNS FAN3LK* DSW1 DSW2 DSW3 CLNRON PSAVE* EXSW* DSW5 DSW4 FAN3ON* CCRGLED 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 colo
APPENDIX 2. Inputs to and Outputs of the Duplexing Driver PCB Connector J2001 J2002 J2003 J2004 J2005 J2006 Pin 3 4 5 6 1 1 1 2 3 4 1 2 3 4 5 6 3 Abbreviation DUPIDS* DUPSTS* DUPCMD DUPCLK* DUPSLD* DUPCLD* SWBAD SWBAND SWBBD SWBBND HRGCOMA HRGCOMB HRGAD HRGAND HRGBD HRGBND HREGS J2007 3 6 SWBKS* DRPS J2008 J2009 3 1 DUPPS* PRRESLD COPYRIGHT © 1999 CANON INC.
APPENDIX A-14 COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Download free service manual at http://printer1.blogspot.
C. GENERAL CIRCUIT DIAGRAM J75F J1101 1 6 2 5 3 4 4 3 5 2 6 1 To fixing assembly 1 2 6 5 3 N.C 5 4 J62 J5006 4 1 5 J5007 1 2 3 1 2 3 5 7 6 3 J5008 6 2 J225 GND FP5* FP4* FP3* FP2* FP1* FP0* +5R 1 2 3 4 5 6 7 8 J73M 8 7 6 5 4 3 2 1 J73F 1 2 3 4 5 6 7 8 5 J2101 8 7 6 5 4 3 2 1 Display panel 1 4 3 T5011 5 2 T5009 J60 J61 20 To secondary transfer belt J203 DC controller PCB CANON 660/2100 REV.0 FEB.
PRINTER UNIT (2/2) J229 1 2 3 1 2 3 4 1 2 3 Laser driver PCB J71F J70F J40F J71M J70M J40M J1001 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 4 3 2 1 3 2 1 1 2 3 4 5 6 7 8 9 10 4 3 2 1 3 2 1 J633 J633 Light-emitting unit J45M 3 2 1 2 1 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 SCND GND SCMFG +5V GND BD* +5V WTNFUL GND WTNLED CTNSNS Reserved GND CTNLED 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10 11 12 J207 GND BDA TA* BDATA GND BSAMPLE* BSAMPLE GND LENB* +5V PD Waste toner detection block FUSLD* +24UH P5S
APPENDIX D. SPECIAL TOOLS You will need the following special tools in addition to the standard tools set: No. Tool name 1 Contact extracting tool Tool No. RY9-0099 Shape Rank* A 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 cartridge against light.
APPENDIX E. SOLVENTS AND OILS Name No. 1 Alcohol Uses Cleaning; e.g., glass, plastic (Note), and rubber parts and external covers. Composition Carbon hydrogen of fluorine family Alcohol Surface activating agent Water Remarks CI, IPA (isopropyl alcohol) 2 Solvent Cleaning; e.g., metal parts; removing oil or toner. Carbon hydrogen of fluorine family Alcohol Carbon hydrogen of chlorine family MEK 3 Lubricant Lubricating; e.g., scanner rail.
Prepared by Office Imaging Products 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.
The publication is printed on 70% reprocessed paper. PRINTED IN JAPAN (IMPRIME AU JAPON) 0299AB1.51-1 Download free service manual at http://printer1.blogspot.
