Canon PC940 manual

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) REVISION 0 FY8-13GA-000 AUG. 1999 PC860 F13-8491 TY A00001- PC880 F13-8291 TZA00001- PC890 F13-8242 U AA00001- PC920 F13-8431 TVB00001- F13-8441 PUD00001- PUE00001- F13-8461 PUH00001- PC921 F13-8432 TVC00001- PC940 F13-8436 TVD00001- PC941 F13-843[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME A U JAPON) IMPORT ANT THIS DOCUMENT A TION IS PUBLISHED BY CANON INC ., J AP AN, T O SER VE AS A SOURCE OF REFERENCE FOR W ORK IN THE FIELD . SPECIFICA TIONS AND OTHER INFORMA TION CONT AINED HEREIN MA Y V AR Y SLIGHTL Y FROM A CTUAL MA CHINE V ALUES OR THOS[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) i This service manual has been prepared for the PC800/900 Series machines, providing basic information used for servicing the machines in the field so as to ensure their quality and performance. This service manual consists of the following chapte[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) ii The following rules apply throughout this Service Manual: 1. Each chapter contains sections e xplaining the pur pose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation.[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) iii Model PC860 PC880 PC890 PC920 PC920 PC920 PC920 PC921 PC940 PC941 PC950 PC950 PC950 PC960 PC980 PC981 Type code TYA TZA UAA PUD PUE PUH TVB TVC TVD TVE PUF PUG TVF TVG TVH TVJ Multi- feeder √ √ √ √ √ √ √ √ Single feeder √ √[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) iv[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) v CONTENTS CHAPTER 1 GENERAL DESCRIPTION CHAPTER 2 BASIC OPERATION CHAPTER 3 EXPOSURE SYSTEM I . FEA TURES .................................. 1-1 I I. SPECIFICA TIONS ....................... 1-2 A . Copier .................................... 1-2 [...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) vi CHAPTER 4 IMAGE FORMATION SYSTEM CHAPTER 5 PICK-UP/FEEDING SYSTEM I. IMAGE FORMA TION SYSTEM ... 4-1 A. Outline ................................... 4-1 B. Timing Char t f or the Image F or mation System ................. 4-3 C . Controlling the[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) vii CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS CHAPTER 9 INSTALLATION CHAPTER 10 MAINTENANCE AND SERVICING CHAPTER 8 ADF I. F ANS ............................................ 7-1 II. POWER SUPPL Y SYSTEM ......... 7-3 A. Outline of the P ower Supply[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) viii APPENDIX CHAPTER 11 TROUBLESHOOTING I. MAINTENANCE AND INSPECTION ............................ 11-3 A. Image Adjustment Basic Procedure ........................... 11-3 B. P oints to Note f or Ser vicing ............................ 11-4 II. [...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 1 GENERAL DESCRIPTION This chapter provides specifications of the machine, instructions on how to operate the machine, and an outline of copying process. I . FEA TURES .................................. 1-1 I I. SPECIFICA TIONS ........[...]

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CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-1 I. FEATURES 1. Personal Copier with a Zoom Function and a Fixed Copyboard • You can choose either a default enlargement/reduction ratio or any ratio between 70% and 141% in 1% increments. 2. Ecology-Conscious • Th[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-2 II. SPECIFICATIONS A. Copier 1. Type Descriptions Desk top Fixed Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model) Fixed focal point lens OPC drum (24-mm dia.) Item Body Copyboard Source of[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-3 3. Performance Descriptions Sheet, book, 3-D object (2kg max.) A4 (297 × 210 mm)/LGL (216 × 356 mm) Inch/AB-configuration: 2R2E Inch-configuration: 3R1E 70% to 141% (in 1% increments *1 ) 0 sec (at 20°C room temper[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-4 *1. Applies only to models with a zoom function. *2. Applies only to single pickup if the multifeeder is used. *3. Applies only to vertical feeding. *4. Upon delivery, be sure to remove each from the copy tray. *5[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-5 4. Others Descriptions 7.5°C to 32.5°C/44.5°F to 90.5°F 5% to 85% RH 607.95 to 1013.25 hPa (0.6 to 1 atm) 120 V 60 Hz 220/240 V 50 Hz, 60 Hz TVBxxxxx PUDxxxxx PUHxxxxx TVCxxxxx PUExxxxx TVDxxxxx PUFxxxxx TVExxxxx [...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-6 5. Default Ratios Table 1-205 2R2E (Inch/AB-configuration) 1:1.000 1:0.707 1:0816 1:1.154 1:1.414 Item Direct Reduce I Reduce II Reduce III Reduce IV Enlarge I Enlarge II 3R1E (Inch-configuration) 1:1.000 1:0.707 [...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-7 6. Copying Speed Table 1-206 *1. The number of copies starting with the pickup operation that follows the delivery of the 19th copy in a continuous copying job. (See p.5-8) The specifications are subject to change for[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-8 B. ADF Table 1-207 Descriptions Auto pickup/delivery Face-down Center reference Top separation Single-sided (50 to 128 g/m 2 ) A5 (STMT) to A4R (LTRR), LGL Length: 139.7 to 355.6 mm (feeding direction) Width: 139.[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-9 *1. The following may not be used as an original: • Sheet with a staple, clip, or glue. • Sheet with a cut, hole, or tear. • Sheet with holes for binding. • Sheet with a carbon back. • Sheet with a cut-and-p[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-10 [1] Copy tray [2] Power cord connector [3] Open/close lever [1] Copyboard cover [2] Static eliminator cleaner [3] Manual feed tray [4] Right door [5] Cassette [6] Copyboard glass [4] Static eliminator [5] Copy de[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-11 [1] ADF [2] Manual feed tray [3] Right door [1] Static eliminator cleaner [2] Delivery guide plate [3] Copy tray [4] Power cord connector [4] Cassette [5] Copyboard glass [5] [4] [2] [3] [1] [5] Open/close lever [6] [...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-12 [1] [4] [3] [2] 3. ADF Figure 1-305 [1] Original tray [2] Original delivery tray [3] Slide guide [4] Auxiliary tray[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-13 [1] No. 3 mirror [2] No. 2 mirror [3] No. 1 mirror [4] Scanning lamp [5] Heat exhaust fan [6] Copyboard glass [7] Side blanking lamp [8] Lens [9] Primary charging roller [10] No. 6 mirror [11] Cartridge [12] No. 4 mi[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-14 [1] Delivery roller [2] Copy tray [3] Pickup roller 2 [4] Pickup roller 1 [5] Copyboard tray [6] Auxiliary tray [7] Guide plate [8] Separation pad [9] Registration roller [10] Feed belt drive roller [11] Feed bel[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-15 Description Adjusts the density of copies manually. Indicates the selected copy den- sity mode. Indicates the selected default ra- tio. Indicates the selected cassette/ manual feed tray.If there is no paper loaded, i[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-16 Description No. Remarks Name 10 11 12 13 14 15 Count/zoom set key Zoom indicator *2 Zoom key *2 Paper selection key *1 Default ratio key Copy density mode selection key Sets the number of copies or a zoom ratio. [...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-17 Zoom V. ROUTINE MAINTENANCE BY THE USER Instruct the user to clean the following if images tend to be soiled or copy paper tends to jam often. 1. Soiled Images a. Copyboard Glass/Copyboard Cover Clean the cover with [...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-18 b.2 Cleaning by Hand 1) Wipe the feed belt with a moist cloth (water or mild detergent solution) in the direction of the arrow in the figure; then, dry wipe it. Figure 1-502 2. If Jams Occur Frequently a. Static [...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-19 Figure 1-504 (ADF type) 2) Pull the open/close lever to open the machine. 3) Using the static eliminator cleaner, clean the static eliminator. • Brush out the paper lint or the like from the groove of the static el[...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 1-20 Scanning lamp Copyboard glass Fixed focal point lens Side blanking lamp (front, rear) Developing blade Developing cylinder Primary charging roller Cleaning blade Transfer charging roller Static eliminator Fixing [...]

CHAPTER 1 GENERAL DESCRIPTION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21 The machine’s image formation process consists of the following seven steps: Step 1 Primary charging (AC + negative DC) Step 2 Image exposure Step 3 Development (AC + negative DC) Step 4 Transfer (negative DC) Step[...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 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. Process speed 96 mm/s[...]

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CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-1 I. BASIC OPERATIONS A. Functional Construction The machine consists of four functional blocks: pickup/feeding system, exposure system, im- age formation system, and control system. Figure 2-101 Control system Control pa[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 2-2 B. Outline of Electrical Circuitry The machine’s major electric mechanisms are controlled by the microprocessor mounted on the DC controller PCB, which reads input signals from sensors and operating keys according[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-3 C. Basic Sequence of Operations • A4R, Direct, 2 Copies, Continuous, Cassette I : Scanner home position detection I I : Lens home position detection Figure 2-103 Copy Start key Power switch ON ON STBY INTR AER SCFW Fo[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 2-4 Table 2-101 STBY (standby) INTR (initial rotation) AER (AE rotation) SCFW (scanner forward) SCRV (scanner reverse) LSTR (last rotation) • From when he power switch is turned on to when the Copy Start key is presse[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-5 D. Controlling the Main Motor (M1) 1. Outline Table 2-102 shows the functions of the main motor control circuit, and Figure 2-104 is a block diagram of the circuit. Table 2-102 Figure 2-104 Composite power supply PCB DC[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 2-6 2. Operations The main motor (M1) is a DC motor with a built-in clock pulse generator, which generates clock pulses (MMCLK) in relation to the rotation of the motor while the motor is rotating. The speed control cir[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-7 E. Inputs to and Outputs from the DC Controller 1. Inputs to the DC Control (1/2) Figure 2-105 PS1 PS2 PS3 TH1 TH2 J101-1 -3 -2 J109-11 -10 -9 J102-7 -9 -8 J132-3 -5 -4 J108-4 -3 -5 J102-1 -6 J131-1 -2 SCHP LHP DPD DIG3[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 2-8 2. Inputs to the DC Controller (2/2) Figure 2-106 When the light reflected by the original increases, the voltage increases. J107-4 -3 -2 -1 +24V The variation in the resistance of the fixing heater is corrected in [...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-9 3. Outputs from the DC Controller (1/2) Figure 2-107 J201-2 -1 DC controller PCB Composite power supply PCB Noise filter +24V HVT board High- voltage circuit block Micro- processor DS1 Door switch Transformer Line filte[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s /900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 2-10 4. Outputs from the DC Control PCB (2/2) Figure 2-108 J109-8 -7 J132-2 -1 J130-1 -2 J109-4 -3 J109-6 -5 J109-2 -1 Pickup clutch solenoid Registration clutch solenoid Multifeeder pickup solenoid (Multifeeder type on[...]

CHAPTER 2 B ASIC OPERA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 2-11 5. Inputs to and Outputs from the ADF Figure 2-109 Composite power supply PCB +24V +5V +5V +24V J114-1 -2 REQ -3 -4 ACK -5 -6 TXD -7 -8 -8 -7 -6 -5 -4 -3 -2 -1 RXD DC controller PCB See Chapter 8. To the ADF -4 -3 -2 -[...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 3 EXPOSURE SYSTEM This chapter discusses the principles of operation used for the machine's lens drive unit and scanner drive unit. It also explains the timing at which these drive units are operated, and shows how they may be disa[...]

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CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-1 Item Lamp Scanning Scanner position detection Ratio variation Lens drive control Scanner drive control Protective function Description Halogen By moving the No. 1 mirror mount By a sensor (scanner home position sensor;[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-2 Figure 3-102 Direct Optical length Reduction Optical length Enlargement Optical length Optical length: L1 < L2, L1 < L3 L3 L2 L1 F F F F' F' F' B. Varying the Reproduction Ratio The reproduction rat[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-3 Figure 3-103 Lens home position sensor (PS2) Lens shift detecting shaft for side blanking lamp Lens unit Reduction Scanner/lens drive motor (M2) No. 4/5 mirror unit Top View Switching gear While the lens is moving Lens[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-4 Figure 3-104 J101-1 M2 PS1 Light-blocking plate Scanner home position signal (SCHP) Scanner home position sensor (PS1) J110-1 SC_COM -2 SC_B* -3 SC_B -4 SC_COM -5 SC_A* -6 SC_A Q109 Motor driver circuit DC controller PC[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-5 Description • Provides a means of reference for determining forward movement distance. • Stops the scanner moving in re- verse in 0.1 sec. Scanner sensor PS1(scanner home position sensor) Signal SCHP Scanner Forwar[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-6 Figure 3-106 Switching to 6-cpm copying speed SCRV SCFW SCRV SCFW SCRV SCFW SCRV LSTR STBY Check timing by thermistor (TH2) Main motor (M1) Registration clutch solenoid (SL2) Scanner Pickup clutch solenoid (SL1) II I 37[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-7 Current switching signal 1 Current switching signal 2 Current switching signal 3 (Q101) (Q109) DC controller PCB A A* B B* SC-COM SC-COM J110 SC-A SC-A* SC-B SC-B* M2 Motor driver circuit +24VU R399 Microprocessor 5. C[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-8 b. Operations The microprocessor (Q101) mounted on the DC controller PCB receives instructions from the control panel PCB copying mode settings (e.g., reproduction ratio). In response, it applies drive pulses to the sca[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-9 Figure 3-201 (Q101) Serial communication VR107 DC controller PCB Microprocessor (Q900) Intensity adjustment signal PWM_1KHz Lamp activation signal LAMP_ON Activation detection signal LAMP_DETECT Composite power supply [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-10 2. Operations a. Turning On/Off the Scanning Lamp The DC controller PCB and the composite power supply exchange signals in serial communi- cation to control the scanning lamp. According to the scanner lamp active volta[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-11 Figure 3-202 c. Monitoring the Activation of the Scanning Lamp The activation detection signal (LAMP_DETECT) is sent to the microprocessor (Q900) on the composite power supply PCB as long as the scanning lamp remains [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-12 III. DISASSEMBLY/ASSEMBLY As needed, disassemble/assemble the machine with the following in mind: 1. ! Before starting the work, turn off the power switch and disconnect the power plug for safety. 2. Unless otherwise i[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-13 Figure 3-301 Figure 3-302 [1] [1] [2] [3] A. Scanner Drive Assembly 1. Removing the Scanner/Lens Drive Motor 1) Remove the front lower cover. (See Chapter 7.I I I .A.2.“Removing the Front Lower Cover.”) 2) Remove [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-14 Figure 3-303 Figure 3-304 [4] [4] [5] 5) Open the machine’s top unit farther, and hold it in position using the handle (about 30 mm in diameter) of a screwdriver. 6) Remove the machine’s two fixing screws [4] from [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-15 Figure 3-305 [6] [7] [5] Lift. 7) Free the top unit (by removing the screw- driver), and close the top unit. 8) Remove the E-ring [6]; then, lift the cable drive pulley [7] slightly, and detach the scanner/lens drive [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-16 Figure 3-306 Wind 1.5 times. (blac k cable) Wind 7.5 times. (silver-colored cab le) 2. Outline of the Scanner Drive Cable[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-17 Figure 3-307 Figure 3-308 [1] 3. Routing the Scanner Drive Cable a. Before Starting the Work Prepare the following: • Mirror positioning tool • Cable clip • Adhesive tape 1) Set the mirror positioning tool as sh[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-18 Figure 3-309 Figure 3-310 [2] [2] [4] [2] [2] [3] [3] [5] [4] [5] 5) If the machine is equipped with an ADF, free the hook [2], and disconnect the two relay connectors [3] from the left upper stay [4]. 6) Remove the th[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-19 Figure 3-311 [6] [6] [7] 7) Remove the four screws [6], and detach the lens cover [7].[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-20 Figure 3-313 Figure 3-312 [2] Shorter end Longer end [1] Face with a marking [1] [3] Top View [3] b. Routing the Reversing Cable 1) Wind the reversing cables (silver-colored) [2] on the cable drive pulley [1] 7.5 times[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-21 Figure 3-314 Figure 3-315 [5] Hook (front) [1] [4] [7] [6] 2) Put the cable drive pulley [1] into the shaft [4], and secure it in position with an E- ring [5]. When putting the cable drive pulley into the shaft, be su[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-22 Figure 3-317 Figure 3-316 [10] [11] [6] [8] [9] Figure 3-318 [6] [12] [13] [14] [15] 4) Lead the shorter end [6] under the No. 1 mirror mount [8] and the No. 2/3 mirror mount [9]; then, hook it on the left rear pulley [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-23 Figure 3-319 Figure 3-320 [8] [17] [9] [16] [14] [18] [19] [14] 7) Lead the longer end [14] under the No. 1 mirror mount [8] and the No. 2/3 mirror mount [9]; then, hook it on the pulley [16] on the left front side an[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-24 Figure 3-322 Figure 3-321 Figure 3-323 [4] [3] [2] [1] Face without a marking [5] [1] [6] [5] [7] [8] [9] c. Routing the Forwarding Cable 1 ) Fit the longer end forwarding cable (black) [2] on the top hook of the cable[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-25 Figure 3-324 Figure 3-326 Figure 3-325 [5] [10] [11] [3] [7] [9] [3] [12] 4) Hook the end of the longer end [5] on the hole [10] on the right side. 5) Free the shorter end [3], and hook it on the pulley [11] on the ri[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-26 Figure 3-327 Figure 3-328 [3] [13] [14] [3] [15] [5] 7) Hook the end of the shorter end [3] on the hole [13] on the right side. 8) Free the shorter end [3] and the longer end [5] (reversing cable), and connect both wit[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-27 Figure 3-329 [1] [16] 9) Detach the pulley clip [16] from the cable drive pulley [1].[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-28 Figure 3-330 (rear) Figure 3-331 (front) [1] [2] [1] [2] d. Positioning the No. 1 Mirror Mount 1) Fix the rear and the front of the No. 1 mir- ror mount [1] temporarily to the metal fix- ing [2] of the forwarding cable[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-29 Figure 3-332 (rear) Figure 3-333 (front) [4] [3] [3] [3] [3] 2) Turn the cable drive pulley [4] so that the three shafts [3] of the mirror positioning tool for rear and front is as shown.[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-30 Figure 3-334 (rear) Figure 3-335 (front) [1] [1] 3) While keeping the condition of step 2), tighten the positioning screw on the rear and front of the No. 1 mirror mount [1].[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-31 Figure 3-336 [1] [1] [2] B. Lens Drive Assembly 1. Removing the Lens Cable 1 ) Turn on the power; when the lens has moved to the Direct position, disconnect the power plug. 2) Remove the copyboard glass. (See Chapter [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-32 Figure 3-337 Figure 3-338 [3] Marking [4] [5] [6] 5) Mark the position of the lens cable fixing plate [3] and the lens mount [4] with a scriber. Caution: When routing the lens cable, be sure to refer to the marking mad[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-33 Figure 3-341 Figure 3-339 Figure 3-340 [7] [8] [6] [9] [10] 7) Remove the screw [7], and detach the cam gear [6] and the cable retainer [8]. 8) Holding the middle of the No. 1 mirror mount [9], move it to the center o[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-34 Figure 3-342 Figure 3-343 [11] [12] [13] [12] 10) Remove the screw [11], and detach the lens cable fixing plate [12]. 11 ) Free the lens cable [13] from the lens cable fixing plate [12]; then, detach the lens cable fro[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-35 Figure 3-344 Figure 3-345 [2] [1] [1] [2] [3] 2. Routing the Lens Cable 1) After routing the lens cable, keep the lever [1] of the No. 4/5 mirror mount disen- gaged from the cam gear [2] (so that the lever will not co[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-36 Figure 3-346 [4] [2] [1] 4) If the tip of the lever [1] and the marking on the cam gear [2] do not match, remove the fixing screw [4] of the cam gear [2] and detach the cam gear; then, mount the cam gear once again so [...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-37 Figure 3-347 Figure 3-348 [1] [2] [3] [4] [5] C. Exposure System 1. Removing the Scanning Lamp 1) Disconnect the power plug. 2) Remove the copyboard glass. (See Chapter 7.I I I.C.1. “Removing the Copyboard Glass.”[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-38 Figure 3-349 [7] [6] 5) While pushing the electrode mount [6] found at the rear of the machine in the di- rection of the arrow, detach the scanning lamp [7]. Caution: 1. Do not start the work if the scanning lamp is ho[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-39 Figure 3-350 Logo mark Scanning lamp 45 (approx.) (mirror mount moving in re verse) (front) 2. Points to Note When Mounting the Lamp When mounting the scanning lamp, be sure that the logo mark (or the name of the manu[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 3-40 Figure 3-351 Figure 3-352 [1] [2] (front) Thermal fuse Reflecting plate 3. Removing the Thermal Fuse 1) Disconnect the power plug. 2) Remove the copyboard glass. (See Chapter 7.I I I.C.1.“Removing the Copyboard Glass[...]

CHAPTER 3 EXPOSURE SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 3-41 5. Removing the Thermistor Unit 1) Remove the top cover. (See Chapter 7.I I I.A.1. “Removing the Top Cover.”) 2) Disconnect the connector (J131) [1] from the DC controller PCB; remove the screw [2], and detach the[...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 4 IMAGE FORMATION SYSTEM This chapter discusses the principles of how images are formed. It also explains the timing at which the various units involved in image formation are operated, and shows how they may be disassembled/assembled a[...]

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CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-1 Item Controlling the primary charging roller bias Transfer roller bias control Developing/separation static eliminator bias control Density control Blanking control Description AC constant current control, on/[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-2 Figure 4-101 Side blanking lamp Copyboard glass Scanning lamp AE sensor Developing cylinder Transfer roller High-voltage circuit block Lamp regulator block Q900 Microprocessor Q101 Microprocessor DC controller [...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-3 Figure 4-102 Copy Start key ON STBY INTR SCFW forward SCFW SCRV Reverse -625V 3200V -400V 0.5sec.(approx.) LSTR STBY Main motor (M1) Scanning lamp (LA1) Primary AC bias Transfer bias Transfer cleaning bias Tra[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-4 C. Controlling the Primary Charging Roller Bias 1. Outline The circuit shown in Figure 4-103 is used to control the voltage applied to the primary charging roller, and has the following functions: • Turning o[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-5 Figure 4-103 Main transformer T101 PR_DC_ON J103 -4 J203 -5 PDC_PWM DC bias control signal PDC_S DC voltage monitor signal PAC_S AC component current monitor signal PAC_OUT AC bias output signal Amplifier Volt[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-6 DC bias ON signal (8-bit signal communication) bit0 bit1 1– 10 00 PR_DC_ON (J103-4) 0 1 1 DC bias ON (image area) DC bias ON (non-image area) DC bias OFF Table 4-102 Relationship between DC Bias Output and Si[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-7 Figure 4-104 Copy Start key ON STBY INTR SCFW SCFW SCRV LSTR STBY Main motor (M1) Scanning lamp (LA1) Primary AC bias Primary DC bias -400V -625V SCRV d. Switching the DC Bias Level The machine switches the DC[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-8 Figure 4-105 Main transf ormer T ransfer positiv e DC bias generation circuit T ransf er positive DC bias ON signal T_REV_ON* T101 T ransf er current detection signal T_FW_S Photo- sensitive drum T ransf er cha[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-9 T_REV_ON* signal 1 0 1 1 Negative transfer bias ON Positive transfer bias ON (cleaning bias) Transfer bias OFF ATVC Transfer bias ON signal (serial communication) bit2 bit3 10 11 00 01 T-FW_ON signal 1 1 0 1 2[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-10 STBY INTR SCFW SCFW SCRV LSTR STBY Main motor (M1) Reference bias (ATVC) Transfer bias SCRV 0.7sec (approx.) 0.8sec (approx.) Copy Start key ON 1.2sec (approx.) Cleaning bias 1.6sec(approx.) Figure 4-106 c. Co[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-11 E. Controlling the Developing/Separation Static Eliminator Bias 1. Outline The circuit shown in Figure 4-107 is used to control the voltage applied to the developing assembly and the separation static elimina[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-12 Figure 4-107 Main transf ormer T101 T201 +5V Photo sensitive drum Dev eloping cylinder Static eliminator Static eliminator bias generation circuit De veloping DC bias detection circuit + DC bias control signal[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-13 DC bias ON DC bias ON (- 500V) DC bias OFF Developing DCON signal (Serial communication) bit5 bit6 –1 01 00 DV_DC_ON (J103-3) 0 1 1 2. Turning On and Off the DC Bias The DC bias applied to the developing cy[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-14 Developing DC bias Voltage supplied to the scanning lamp Toner save mode -75V -2V *1 -3V *2 Photo mode +15V -2V *1 -3V *2 Figure 4-108 If the machine is not equipped with a density correction switch (SW101), t[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-15 Figure 4-111 (Non-SW101) Figure 4-112 (Non-SW101) Test sheet Newspaper Original density 0 -100 -200 -300 -400 -500 Developing bias DC component (V) AE Mode F1 F5 F9 1 6.5 0 -100 -200 -300 -400 -500 Developing[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-16 Figure 4-113 Scanning lamp +24V +24V +24V +24V +5V +5V VR102 VR103 J601 -3 J107 -2 AEREF AE -2 -3 - + - + - + - + Photo- sensitive drum Dev eloping cylinder (Q101) (Q900) Dev eloping DCON signal Serial communi[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-17 Figure 4-115 Copy Start key ON STBY INTR AER SCFW SCFW SCRV LSTR STBY Main motor (M1) Scanner / lens drive motor (M2) AE signal (AE) Scanning lamp (LA1) SCRV Figure 4-114 68.8mm (appro x.) 23.5mm (appro x.) 5[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-18 Figure 4-116 J104 J103 3. AE Adjustment (VR102, VR103) If you have replaced the scanning lamp or the AE sensor PCB, make adjustments as follows: Operating Procedure Before Starting the Work • Obtain a newspa[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-19 Figure 4-117 5) Place a newspaper on the copyboard, and close the copyboard cover. 6) Turn VR102 so that the reading in the indicator is from ‘A3’ to ‘Ad’. Figure 4-118 VR103 VR102 2) While keeping th[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-20 Figure 4-119 9) Repeat steps 5) through 8) so that the values of both VR102 and VR103 are target values. Caution: If you cannot set VR102 and VR103 to the target values at the same time, turn VR103 fully count[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-21 Figure 4-121 Figure 4-122 Reflecting plate Rear side blanking lamp Lens shift detecting shaft Front side blanking lamp Reflecting plate (front) AB Photosensitive drum Non-image area in Reduce mode A: Position[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-22 II. DISASSEMBLY/ASSEMBLY As needed, disassemble/assemble the machine with the following in mind: 1. ! Before starting the work, turn off the power switch and disconnect the power plug for safety. 2. Unless oth[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-23 Figure 4-201 a. Drum Cover Shutter If exposed to strong light for a long time, the photosensitive drum can develop photo memory, which can cause white spots or black bands on copies. To prevent photo memory, [...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-24 2. Cleaning the Drum Caution: As a rule, do not touch or clean the photosensitive drum. 1) Open the machine's top unit, and take out the cartridge. 2) Turn over the cartridge, and open the drum cover shut[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-25 Figure 4-202 [1] [2] [2] [3] B. Transfer Charging Assembly 1. Removing the Transfer Charging Roller 1) Open the machine's top unit. 2) Remove the screw [1]. 3) While freeing the claw [2] of the bushing, [...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 4-26 Figure 4-203 [1] C. Blank Exposure 1. Removing the Blanking Exposure Unit 1) Set the machine to the maximum ratio (141%) as follows: • Turn on the power, and select a default ratio of 141%. • Press the Cop[...]

CHAPTER 4 IMA GE FORMA TION SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 4-27 Figure 4-204 Figure 4-205 Figure 4-206 [3] [4] [5] Lamp PCBs 7) Open the machine’s top unit farther, and hold it in place using the handle of a screwdriver (about 30 mm in diameter). 8) Remove the four scre[...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 5 PICK-UP/FEEDING SYSTEM This chapter explains the principles used from when copy paper is picked up to when a copy is delivered in view of the functions of electrical and mechanical units and in relation to their timing of operation. I[...]

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CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-1 Table 5-101 Notation PS3 PS4 PS5 Q751 Name Delivery sensor Vertical path roller paper sensor Single-feeder paper sensor Pre-registration roller paper sensor Remarks Single-feeder model only I. PICKUP/FEEDING SYS[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-2 Figure 5-101 (Multifeeder type) Figure 5-102 (Single-feeder type) Multifeeder pickup roller Cassette pickup roller Vertical path roller Q751 PS4 Static eliminator Photosensitive drum Holding plate Cassette Copy [...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-3 B. Controlling the Pickup Roller 1. Outline The machine has three types of pickup rollers, i.e., cassette pickup roller, multifeeder pickup roller, and single-feeder pickup roller, and each of these rollers are [...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-4 Figure 5-104 (Single-feeder type) M1 SL1 SL5 Cassette pickup solenoid drive signal (CPUSD*) Pickup clutch solenoid drive signal (PUSLD*) DC controller PCB Copy paper Pickup clutch Arm Cassette pickup rollers Spr[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-5 STBY INTR SCFW SCRV LSTR STBY Copy Start key ON 0.7sec (approx.) II I Cassette pickup solenoid (SL5) Vertical path roller paper sensor (PS4) Pickup clutch solenoid (SL1) Main motor (M1) I : Re-pickup operation i[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-6 Figure 5-106 M1 SL1 SL4 Cam gear Spring clutch Control ring Lifter Multifeeder pickup roller Paper guide plate Copy paper DC controller PCB Multifeeder pickup solenoid drive signal (MFSLD*) Pickup clutch solenoi[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-7 Figure 5-107 M1 DC controller PCB Pickup clutch Single-feeder paper sensor SL1 Single-feeder Pickup roller Copy paper Single-feeder paper detection signal (SFPD) PS5 5. Controlling the Single-feeder Pickup Rolle[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-8 Figure 5-108 SCRV Delivery sensor (PS3) Pre-registration roller paper sensor (Q751) Cassette pickup solenoid (SL5) Switching to 9-cpm copying speed Main motor (M1) SCFW SCRV SCFW SCFW SCRV I 19th copy SCRV I: A [...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-9 Figure 5-109 M1 Claw SL2 DC controller PCB Registration clutch solenoid drive signal ( RGSLD* ) Pre-registration roller paper detection signal ( RPD ) Pre- registration roller paper sensor (Q751) Copy paper Pape[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-10 Figure 5-110 Figure 5-111 Copy Start key ON STBY INTR SCFW SCFW SCRV Forward Reverse LSTR STBY Main motor (M1) Delivery sensor (PS3) Scanner SCRV 0.7sec (approx.) 0.1sec (approx.) 0.3sec (approx.) II Pickup clu[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-11 STBY INTR SCFW SCFW SCRV Forward Reverse LSTR STBY Main motor (M1) Scanner Delivery sensor (PS3) SCRV 0.7sec (approx.) 0.1sec(approx.) 1sec Copy Start key ON I II 0.3sec (approx.) Multifeeder pickup solenoid (S[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-12 Figure 5-113 (Multifeeder type) Figure 5-114 (Single-feeder type) Multifeeder pickup roller Cassette pickup roller Vertical path roller Q751 PS4 Photosensitive drum Cassette Fixing assembly Delivery roller PS3 [...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-13 1. Multifeeder Pickup Assembly (no paper, pickup delay jam) If copy paper does not reach the pre-registration roller paper sensor within a specific period of time in multifeeder mode, the condition will be iden[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-14 Figure 5-118 Copy Start key ON STBY INTR SCFW No paper Cassette pickup solenoid (SL5) Jam check Main motor (M1) Vertical path roller paper sensor (PS4) 1.2sec 1.2sec 1.5sec 1.2sec P indication Re-pickup Normal [...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-15 Figure 5-119 4. Vertical Path Stationary Jam If copy paper fails to move past the vertical path roller paper sensor within a specific period of time because of faulty feeding, the machine will identify the cond[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-16 Figure 5-122 Figure 5-121 6. Registration Paper Stationary Jam If copy paper does not move past the pre-registration roller paper sensor within a specific period of time because of feeding faults, the machine w[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-17 Figure 5-123 8. Delivery Stationary Jam If copy paper does not move past the delivery sensor within a specific period of time because of feeding faults, the machine will identify the condition as a delivery sta[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-18 II. DISASSEMBLY/ASSEMBLY As needed, disassemble/assemble the machine with the following in mind: 1. ! Before starting the work, turn off the power switch and disconnect the power plug for safety. 2. Unless othe[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-19 Figure 5-201 Figure 5-202 [1] [2] [3] A. Pickup Assembly 1. Removing the Pickup Roller 1) Pull out the cassette. 2) Remove the front lower cover. (See Chapter 7.I I I.A.2.“Removing the Front Lower Cover.”) [...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-20 Figure 5-203 Figure 5-204 [4] [5] [6] [7] [9] [8] 5) While pulling the guide plate [4] of the cassette pickup solenoid in the direction of the arrow, turn the gear [5] slightly in the direction of the arrow to [...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-21 Figure 5-205 Figure 5-206 He x wrench [10] Pickup roller shaft [11] Pickup gear unit 7) Using a hex wrench or the like, push the hook [10] of the pickup roller through the hole to remove the pickup roller [11].[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-22 Figure 5-207 Figure 5-208 [1] [2] [3] 2. Removing the Pickup Clutch 2.1 Removing the Pickup Clutch (single- feeder type) 1) Remove the front lower cover. (See Chapter 7.I I I.A.2.“Removing the Front Lower Cov[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-23 Figure 5-209 Figure 5-210 Figure 5-211 [5] [6] [5] [4] [8] [7] [6] [9] [10] [11] 5) Remove the screw [4] and the two claws [5], and detach the gear unit [6]. 6) Free the claw [7] of the gear unit [6], and detac[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-24 Figure 5-212 Figure 5-213 [1] [2] [3] 2.2 Removing the Pickup Clutch (multifeeder type) 1) Remove the front lower cover. (See Chapter 7.I I I.A.2.“Removing the Front Lower Cover.”) 2) Remove the registratio[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-25 Figure 5-214 Figure 5-215 [4] [4] [5] [6] [7] 5) While freeing the two claws [4], remove the pickup clutch unit [5]. 6 ) Remove the E-ring [6], and detach the pickup clutch [7].[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-26 Figure 5-216 Figure 5-217 [1] [2] [3] 3. Removing the Vertical Path Roller 1) Remove the front lower cover. (See Chapter 7.I I I.A.2.“Removing the Front Lower Cover.”) 2) Open the machine’s top unit farth[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-27 Figure 5-218 [4] [5] 4) While lifting the sensor lever [4], remove the vertical path roller [5].[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-28 Figure 5-219 Figure 5-220 [1] [2] [1] Pickup gear unit B. Multifeeder Assembly 1. Removing the Multifeeder Unit 1) Open the right door. 2) Remove the two screws [1], and detach the multifeeder unit [2]. Caution[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-29 Figure 5-221 Figure 5-222 Figure 5-223 [2] [1] [1] [3] [4] [6] [5] 2. Removing the Multifeeder Pickup Roller 1) Remove the multifeeder unit. (See 1. “Removing the Multifeeder Unit.”) 2) Free the claw [1], a[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-30 Figure 5-224 Figure 5-225 [1] [2] [3] [4] [5] [5] 3. Removing the Separation Pad 1) Remove the multifeeder pickup roller to- gether with its shaft. (See 2. “Removing the Multifeeder Pickup Roller.”) 2) Remo[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-31 Figure 5-226 [1] [2] [1] C. Single-feeder Assembly 1. Removing the Single-feeder Unit 1) Open the right door. 2) Remove the two screws [1], and remove the single-feeder unit [2]. Figure 5-227 Figure 5-228 2. Re[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-32 Figure 5-229 [3] [5] [6] 4) Free the claw [5] of the paper guide plate [3], and remove the single-feeder pickup roller [6].[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-33 Figure 5-230 Figure 5-231 [2] [1] [3] [3] [3] [3] [3] [3] [4] [4] [4] [4] [5] [5] [5] D. Feeding Assembly 1. Detaching the Feed Belt 1) Open the machine’s top unit. 2) Push down the stopper [1], and remove th[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-34 Figure 5-233 [3] [2] [2] Figure 5-232 [1] [1] E. Registration Roller Assembly 1. Removing the Registration Roller Unit 1) Open the machine’s top unit. 2) Remove the spring [1] (front, rear). 3) Remove the two[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-35 Figure 5-234 Figure 5-235 [1] [2] [3] [4] 2. Removing the Registration Roller Clutch 1) Remove the registration roller unit. (See 1. “Removing the Registration Roller Unit.”) 2) Remove the bushing [1] and t[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-36 Figure 5-237 Figure 5-238 [1] [3] [3] [2] [4] [5] [6] F. Delivery Assembly 1. Removing the Delivery Roller 1) Remove the fixing lower roller. (See Chapter 6.I I.A.3.“Removing the Fix- ing Lower Roller.”) 2)[...]

CHAPTER 5 PICK-UP/FEEDING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 5-37 Figure 5-239 Figure 5-240 4) Remove the two bushings [7]. 5) While shifting the delivery lower guide [8] toward the rear, detach the delivery roller [9]. [7] [8] [9][...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 6 FIXING SYSTEM This chapter explains the principles used to fuse toner images to transfer medium in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units ma[...]

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CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 6-1 Table 6-101 Item Fixing method Fixing drive Fixing heater Fixing temperature detection Cleaner Protective functions Error code Description SURF Main Motor (M1) Flat heater Thermistor (TH1) Cleaning roller The following a[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 6-2 Figure 6-101 Figure 6-102 Cleaning roller Fixing lower roller Fixing thermistor (TH1) Thermal fuse 2 (FU2) Fixing film Fixing heater (H1) M1 Fixing thermistor signal (TH1) DC controller PCB Composite power supply PCB M[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 6-3 B. Controlling the Fixing Temperature 1. Outline The fixing lower roller of the fixing assembly is driven by the main motor (M1). When the fixing lower roller rotates, the film of the fixing upper unit starts to rotate i[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 6-4 2. Controlling the Temperature of the Fixing Heater The temperature of the fixing heater is switched according to the following two parameters: • Temperature of the fixing heater when the Copy Start key is pressed. ?[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 6-5 Heater temperature when the Copy Start key is pressed Less than 100°C 100°C or more and less than 120°C 120°C or more Number of copies 1 2 ~ 9 10 ~ 29 30 ~ 39 40 ~ 49 50 ~ 59 60 ~ 1 ~ 9 10 ~ 19 20 ~ 29 30 ~ 39 40 ~ 1[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 6-6 Figure 6-106 Figure 6-105 4. Correcting the Variation in the Resistance of the Fixing Heater The characteristics of the flat heater used as the fixing heater vary from heater to heater because the production method. A [...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 6-7 Figure 6-107 5. Controlling the Power Supplied to the Fixing Heater between Sheets When the copying speed is controlled to 6 cpm to prevent overheating of the copyboard, the temperature of the fixing lower roller tends t[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 6-8 6. Protective Functions The machine is equipped with the following protective functions to prevent malfunction of the fixing heater. a. Thermistor (TH1) The microprocessor on the DC controller PCB monitors the voltage [...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 6-9 b. Thermal Fuse (FU2) If the temperature around the thermal fuse exceeds 228°C and remains so for a specific period of time, the thermal fuse will blow to cut the power to the fixing heater.[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 6-10 II. DISASSEMBLY/ASSEMBLY As needed, disassemble/assemble the machine with the following in mind: 1. ! Before starting the work, turn off the power switch and disconnect the power plug for safety. 2. Unless otherwise i[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 6-11 Figure 6-201 Figure 6-202 [5] [4] [3] [1] [2] [2] [3] [1] [1] Fixing heater [2] Fixing film [3] Inlet guide [4] Fixing lower roller [5] Cleaning roller A. Fixing Assembly 1. Construction Caution: 1. The fixing film is m[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 6-12 Figure 6-203 Figure 6-204 [5] [4] [8] [6] [7] 3) Remove the screw [4], and disconnect the connector [5]. 4) Remove the two screws [6], and discon- nect the connector [7]; then, detach the fixing assembly [8] by turnin[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 6-13 Figure 6-205 Figure 6-206 [1] [2] [2] [3] [5] [4] 3. Removing the Fixing Lower Roller 1) Remove the fixing assembly. (See 2. “Removing the Fixing Assem- bly.”) 2) Remove the two screws [1], and free the two hooks [2[...]

CHAPTER 6 FIXING SYSTEM COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 6-14 4. Removing the Cleaning Roller 1) Remove the fixing lower roller. (See 3. “Removing the Fixing Lower Roller.”) 2) Remove the cleaning roller [1] together with the bushing. Figure 6-208 [1] Figure 6-207 [6] 4 ) Re[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS This chapter shows the machine's external parts, and explains the principles used for the machine's various control mechanisms in view of the functions of electrical and mechanical units and in[...]

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CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-1 Figure 7-101 Heat e xhausting fan FM1 I. FANS The machine is equipped with two fans serving to discharge ozone or cool its inside. The heat exhaust fan is driven directly by the main motor (M1; through[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-2 Figure 7-102 I: If 6-cpm copying speed control is executed starting with the first copy, the fan will rotate. STBY INTR SCFW Forward SCFW SCRV Reverse LSTR STBY Main motor (M1) Scanner cooling fan (F[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-3 Figure 7-201 Power plug DS1 Composite power supply circuit Noise filter circuit Door switch Relay RL601 FU102 Trans- former T600 Auxiliary power supply circuit +5V Micro- processor (Q900) Main transfor[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-4 B. Power Supply Circuit The machine’s power supply consists of a composite power supply circuit in which a DC power supply, scanning lamp power supply, and high-voltage power supply are integrated [...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-5 Figure 7-202 Door switch DS1 Auxiliary power supply Relay RL601 FU102 +5V Microprocessor (Q900) C123 Power switch SW309 Control panel DC controller PCB Power supply Main transfor- mer T101 DC power sup[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-6 C. Detecting an Error on the Composite Power Supply PCB The machine’s composite power supply PCB is equipped with a self diagnostic function to check each power output and the communication with th[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-7 III. DISASSEMBLY/ASSEMBLY As needed, disassemble/assemble the machine with the following in mind: 1. ! Before starting the work, turn off the power switch and disconnect the power plug for safety. 2. U[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-8 Figure 7-301 (Copyboard type) [2] [1] [3] [6] [4] [5] [7] [1] Copyboard cover [2] Top cover [3] Control panel [4] Front lower cover [5] Cassette [6] Front upper cover [7] Left cover A. External Cover[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-9 Figure 7-303 Figure 7-302 (ADF type) [1] ADF [2] Top cover [3] Control panel [4] Front lower cover [5] Cassette [6] Front upper cover [7] Left cover [2] [1] [3] [6] [4] [5] [7] [1] [3] [2] [1] Rear cov[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-10 Figure 7-304 Figure 7-305 [1] [1] [2] [3] [3] [4] 1. Removing the Top Cover 1) Remove the copyboard cover or the ADF. 2) Open the machine’s top unit. 3) Remove the two screws [1], and detach the f[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-11 Figure 7-306 Figure 7-307 [5] [6] [7] [8] [9] 5) Remove the screw [5], and free the four claws [6]; then, detach the rear cover [7]. 6 ) Remove the screw [8], and detach the copyboard cover foot retai[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-12 Figure 7-308 [10] [11] [10] 7) Free the two claw [10]; then lift the top cover [11] to detach.[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-13 Figure 7-309 [1] [2] [1] [3] [3] [4] Figure 7-310 2. Removing the Front Lower Cover 1) Open the right door. 2) Remove the two screws [1], and detach the multifeeder unit [2] (or the single- feeder uni[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-14 Figure 7-312 Figure 7-313 [6] [6] [7] Pickup gear unit Figure 7-311 [5] 5 ) Remove the two screws [5] from the screw plate found at the bottom of the ma- chine. 6) While freeing the five claws [6], [...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-15 Figure 7-314 Figure 7-315 [1] [1] [2] [4] Lighter Darker Auto Exposure Manual Exposure Photo Timer Sa ver Mov e to the right [5] [6] [3] [7] B. Control Panel 1. Removing the Control Panel 1) Open the [...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-16 Figure 7-316 Figure 7-317 [1] [2] [2] [3] Grounding plate Cop yboard glass C. Copyboard Glass 1. Removing the Copyboard Glass 1) Remove the top cover. (See A.1. “Remov- ing the Top Cover.”) 2) C[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-17 Figure 7-318 Figure 7-319 [1] [2] [3] D. Main Motor/Main Drive Assembly 1. Removing the Main Motor Unit 1) Remove the drum cartridge. 2 ) Remove the composite power supply PCB. (See E.2. “Removing t[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-18 Figure 7-321 [5] [5] [6] [4] Figure 7-320 5) Detach the fan belt [4]. 6) Remove the four screws [5], and detach the main motor unit [6]. Caution: When installing the main motor unit, be sure to atta[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-19 Figure 7-322 Figure 7-323 [1] [2] [3] 2. Removing the Main Drive Assem- bly 1) Remove the drum cartridge. 2 ) Remove the composite power supply PCB. (See E.2. “Removing the Composite Power Supply PC[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-20 Figure 7-324 Figure 7-325 [4] [5] [5] [6] 5) Detach the fan belt [4]. 6) Remove the five screws [5], and detach the main drive assembly [6]. Caution: When installing the main drive assem- bly, be su[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-21 Figure 7-326 Figure 7-327 [1] [1] [2] [3] [4] [4] [4] [5] E. Electrical System 1. Removing the DC Controller PCB 1) Open the machine’s top unit. 2 ) Remove the screw [1], and detach the front upper [...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-22 Figure 7-328 Figure 7-329 [1] [2] [3] [3] [3] [4] 2. Removing the Composite Power Supply PCB 1) Remove the copyboard cover or the ADF. 2) Remove the left cover and the rear cover. 3) Remove the scre[...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 7-23 5) Remove the seven screws [5], and free the five claws [6]; then, detach the composite power supply PCB [7]. Figure 7-330 [5] [5] [5] [6] [7][...]

CHAPTER 7 EXTERNALS/A UXILIAR Y MECHANISMS COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 7-24 3. Points to Note When Handling the Composite Power Supply PCB 1) Some capacitors on the composite power supply hold charges when the machine’s power supply is off. Take extra care never to short [...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 8 ADF I. ADF .............................................. 8-1 A. Outline ................................... 8-1 B Basic Construction ................ 8-2 C . Basic Operations ................... 8-4 D . Detecting an Original ........[...]

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CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-1 I. ADF A. Outline The ADF picks up the originals stacked on the original tray starting with the topmost original, moves them through the copyboard, and delivers them. See Figure 8-101 for an outline of the feeding route. Figure 8-[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-2 B Basic Construction 1. Outline of the Electric Circuitry The ADF’s major electrical mechanisms are controlled by the CPU on the ADF controller PCB. The CPU on the ADF controller PCB reads the signals from the sensors and the cop[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-3 2. Inputs to and Outputs from the ADF Controller PCB a. Inputs to and Outputs from the ADF Controller PCB (1/1) Figure 8-103 ADF switch Registration paper sensor Original placement sensor Delivery sensor PI1 J105 J6-1 -2 ADF contr[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-4 C. Basic Operations 1. Outline The ADF uses two motors for picking up and delivering originals. The pickup motor (M2) is used to pick up originals, and the belt motor (M1) is used to move, stop, and deliver originals. Further, the [...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-5 2. One-Sided Original Mode The ADF picks up originals stacked on the original tray starting with the topmost original; after it picks up an original, it places it on the copyboard glass for copying, moves it away from the copyboar[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-6 D. Detecting an Original 1. Outline The ADF’s original detection mechanism has the following two functions: 1. Detecting the Presence/Absence of an Original Checks whether there is an original on the original tray. 2. Identifying[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-7 2. Identifying the Length of the Original The registration paper sensor (PI2) is used to identify the length of the original, if any. The ADF controller computes the length of the original based on the time it takes for the origin[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-8 E. Pickup Operation 1. Operation When an original is placed on the original tray and the Copy Start key is pressed, the following sequence of operations takes place: 1 Preparing for PickUp Operation When an original is placed on th[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-9 3 Arching The first original is butted against the registration roller so that it arches. Figure 8-110 4 Feeding Operation 1 The feeding belt is moved so that the leading edge of the first original comes into contact with the deli[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-10 5 Feeding 2 The feeding belt is moved counterclockwise so that the first original is stopped at a specific location on the copyboard glass. Figure 8-113 6 Moving the Scanner and Picking Up the Second Original The scanner starts to[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-11 2. Sequence of Pickup Operations (A4/LTR, 2 originals) Figure 8-115 3. Sequence of Operations (LGL, 2 originals) Figure 8-116 Original set Copy Start key ON Preparing for pickup Pickig up Pickup motor (M2) Belt motor (M1) Origina[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-12 F. Delivery 1. Operations The ADF operates as follows to deliver originals from the copyboard glass: 1 Delivery Feeding The feeding belt is moved to feed and deliver the first original on the copyboard glass. At the same time, the[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-13 2. Sequence of Operations (A4/LTR, 2 originals) Figure 8-119 3. Sequence of Operations (LGL, 2 originals) Figure 8-120 Original set Copy Start key ON Pickup motor (M2) Belt motor (M1) Original detection sensor (PI3) Registration [...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-14 G. Controlling the Pickup Motor 1. Outline Figure 8-121 is a diagram of the control circuit for the pickup motor (M2). The pickup motor is a DC motor. The CPU (Q1) on the ADF controller PCB sends the motor drive signals PM0 and PM[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-15 H. Controlling the Belt Motor 1. Outline Figure 8-122 is a diagram showing the control circuit for the belt motor (M2). The belt motor is a 4-phase control stepping motor. The CPU (Q1) on the ADF controller PCB sends control puls[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-16 I. Detecting Original Jams The ADF is equipped with three jam sensors (PI1 through PI3) as indicated in Figure 8-123 to monitor the movement of originals. The movement of originals are checked at such times as programmed in the CP[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-17 J. Power Supply 1. Outline Figure 8-124 shows the routes of power supply. The ADF is supplied by the copier with 5 V and 24 V. The 24V supply is cut off when the ADF is opened, i.e., when the ADF switch (MS1) turns off. The 5V su[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800S/900S REV .0 A UG. 1999 PRINTED IN JA P AN (IMPRIME AU JAPON) 8-18 II. DISASSEMBLY/ASSEMBLY As needed, disassemble/assemble the machine with the following in mind: 1. ! Before starting the work, turn off the power switch and disconnect the power plug for safety. 2. Unless otherwise instructed, [...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-19 A. Removing the ADF 1) Open the machine’s top unit. 2) Free the two claws [1], and slide the left cover [2] to detach. 3) Remove the screw [3], and free the four claws [4]; then, the detach the rear cover [5]. 4) Close the mach[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-20 Figure 8-204 Figure 8-205 [11] [11] 6) Disconnect the two connectors [8], and remove the screw [9]; then, remove the cable bush [10]. 7) Remove the two lockpin [11], and remove the ADF from the copier. [8] [10] [9] [8][...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-21 B. External Covers Remove the covers as follows when cleaning, checking, or repairing the inside of the machine: 1) Remove the ADF from the copier. (See “A. Removing the ADF.”) 2) Remove the feeding roller [1] from the bushin[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-22 3) Remove the six screws [3], and separate the lower cover [4] from the upper cover [5]. 4) Disconnect the connector [6], and remove the lower cover [4]. Figure 8-208 Figure 8-209 [3] [4] [5] [3] [3] [4] [6][...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-23 C. Drive System 1. Drive Unit 1) Remove the lower cover. (See “B. External Covers.”) 2) Remove the screw [1] and the bushing [2]; then, remove the pickup roller cover [3]. 3) Remove the E-ring [4], and remove the bearing [5].[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-24 4) Remove the timing belt [6], and remove the feeding belt roller [7] by shifting it in the direction of the arrow. 5) Remove the five screws [9], and remove the right hinge unit [8]. 6) Remove the stop ring [10] (resin) and the b[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-25 7) Disconnect the two connectors [12], and remove the five screws [13]; then, remove the drive unit [14]. Figure 8-215 [12] [13] [14] [13][...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-26 D. Feeding System 1. Pickup Roller 1) Remove the drive unit [1]. (See “C.1. Drive Unit.”) 2) Remove the E-ring [2], and remove the shaft [3]; then, detach the pickup roller 1 [4]. 3) Remove the stop ring [5]. Figure 8-216 Figu[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-27 4) Remove the two straight pins [6], and re- move the pickup roller 2 [8] while moving the cover [7] in the direction of the arrow. Figure 8-219 [6] [6] [7] [8][...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-28 2. Registration Roller 1) Remove the lower cover. (See “B. External Covers.”) 2) Remove the link arm [1] from the registra- tion roller shaft [2] by turning the link arm. 3) While pushing the bushing [3] in the di- rection of [...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-29 3. Feeding Belt 1) Remove the lower cover. (See “B. External Covers.”) 2) Remove the two tension springs [1]. 3) Remove the E-ring [2], and remove the bearing [3]. 4) Remove the timing belt [4], and remove the feeding belt dr[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-30 5) Remove the two equalizer spring [6] and the two feeding belt rolls [7]. 6) Remove the two screws [9], and remove the delivery sensor unit [8]. 7 ) Remove the stop ring [10] (made of resin); then, remove the bushing [11]. Figure[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-31 8) Remove the screw [12], and remove the grounding wire [13]; then, remove the de- livery roller unit [14] by moving it in the direction of the arrow. 9) Remove the screw [15], and remove the static eliminating brush [16]. 10 ) R[...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 8-32 11) Pull out the actuator [21] in the direction of the arrow; then, remove the feeding belt link roller [22], and remove the feeding belt [23]. Figure 8-231 [21] [22] [23][...]

CHAPTER 8 ADF COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 8-33 E. Electrical System 1. ADF Controller PCB 1) Remove the lower cover. (See “B. External Covers.”) 2) Disconnect the five connectors [1], and remove the two screws [2]; then, remove the ADF controller PCB [3]. 2 . Original Pla[...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 9 INSTALLATION I. SELECTING A SITE .................... 9-1 II. UNP A CKING AND INST ALLA TION ............................ 9-2 A. Unpacking and Installation .... 9-2 B. Placing Cop y P aper ............... 9-9 III. MO VING THE MA CHINE[...]

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CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 9-1 I. SELECTING A SITE Keep the following in mind when selecting a site for installation; if possible, visit the user’s before delivery of the machine: • The site offers a power outlet whose rating is as specified (±1[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 9-2 II . UNPACKING AND INSTALLATION When a piece of metal is brought in from a cold to warm place, droplets of water tend to form on its surface. This phenomenon is known as “condensation” and, in copiers, can cause blan[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 9-3 Work Checks and remarks Step Remove the shipping attachment [2] (black screw) from the right side of the machine. 4 Shipping attachment [2] You will be storing the shipping attachment [2] inside the machine in step 9. T[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 9-4 Work Checks and remarks Step Open the copyboard cover, and remove the protective sheet. (Copyboard type only) Caution: If the protective sheet is not fond on the ma- chine, go to the next step. 6 Protective sheet Open th[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 9-5 Work Checks and remarks Step Pick the fixing member from the bottom of the top unit, and detach it. 8 Store the shipping attachments [1] and [2] re- moved in steps 3 and 4 in the machine’s bot- tom unit. 9 [1] [2] Hol[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 9-6 Work Checks and remarks Step Place the cartridge on a level place, and pull off the open seal. Holding the tab, pull it straight out in the di- rection of the arrow. Caution: The seal can tear in the middle. Do no pull i[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 9-7 Work Checks and remarks Step While bending the ADF auxiliary tray in the direction of arrows in the figure, insert it into the holes on the edge of the original tray. 16 Holes ADF auxiliary tray Slide in and out the aux[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 9-8 Work Checks and remarks Step Attach the copy tray. 20 Check to make sure that the three grooves in the copy tray are all in place. Place copy paper inside the cassette. (For how, see B. “Placing Copy Paper.”) 21 All [...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 9-9 Work Checks and remarks Step B. Placing Copy Paper 1. Universal Cassette Take out the cassette from the machine, and remove the protective members and the label. Remove the rear guide plate as shown, and mount it back t[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 9-10 Work Checks and remarks Step Place copy paper in the cassette, and set the cassette into the machine. 4 All text on the label attached to the cassette is English. If you need to replace it with a non- English label, sel[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 9-11 Work Checks and remarks Step 2. 250-Sheet/500-Sheet Cassette Take out the cassette from the machine, and remove the protective member. 1 Slide the rear end paper guide plate as shown to match the size of the paper to b[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 9-12 III. MOVING THE MACHINE If you need to move the machine by truck or any other means of transportation after installa- tion, be sure to perform the following: Work Checks and remarks Step Turn on the power, and press the[...]

CHAPTER 9 INST ALLA TION COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 9-13 Work Checks and remarks Step Fit the shipping attachments [1] and [2] de- tached in step 5 back to the machine. 8 Shipping attachment [1] Shipping attachment [2] Tape the machine's top unit in place to prevent it [...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 10 MAINTENANCE AND SERVICING I. PERIODICALL Y REPLA CED P ARTS ....................................... 10-1 II. DURABLES AND CONSUMABLES ...................... 10-1 III. SCHEDULED SER VICING ....... 10-1 IV . ST ORING AND HANDLING THE C[...]

CHAPTER 10 MAINTENANCE AND SER VICING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 10-1 I. PERIODICALLY REPLACED PARTS The machine does not have parts which must be replaced on a periodical basis. II . DURABLES AND CONSUMABLES The machine does not have items designated as durables or consumab[...]

CHAPTER 10 MAINTENANCE AND SER VICING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 10-2 IV . STORING AND HANDLING THE CARTRIDGE The cartridge is subject to the effects of the environment whether its packing seal is intact or removed or whether it is inside the machine or otherwise, changing ov[...]

CHAPTER 10 MAINTENANCE AND SER VICING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 10-3 B. Storing and Handling the Cartridge with the Packaging Seal Removed The photosensitive medium is an organic photoconducting (OPC) material, which would dete- riorate if subjected to storing light. The ca[...]

CHAPTER 10 MAINTENANCE AND SER VICING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 10-4 2. Handling the Cartridge a. Before setting the cartridge in the machine or if copies have white spots as when it starts to run out of toner, hold the cartridge level and shake it about 90° several times a[...]

CHAPTER 10 MAINTENANCE AND SER VICING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 10-5 c. Do not touch the surface of the photosensitive drum as by opening the shutter for the photosen- sitive drum cover found at the bottom of the cartridge. (If you have soiled the surface of the photosensit[...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) CHAPTER 11 TROUBLESHOOTING I. MAINTENANCE AND INSPECTION ............................ 11-3 A. Image Adjustment Basic Procedure ........................... 11-3 B. P oints to Note for Ser vicing ............................ 11-4 II. ST AND ARDS [...]

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CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-1 Guide to the Troubleshooting Procedure This chapter provides troubleshooting instructions in the form of tables prepared based on generally found flow charts. Study the following for an idea of how to use them: AC p[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-2 • Often, you will find the following instructions when checking the voltage using a meter: “mea- sure the voltage between J109-1 (+) and -2 (-) on the DC controller PCB.” The symbol “+” indicates the termin[...]

11-3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) I. MAINTENANCE AND INSPECTION A. Image Adjustment Basic Procedure Making Pre-Checks Adjusting the Optimum Density Clean the par ts. Is the cop y density correction s witch (SW101) set to the middle inde x? (Note 1) Set it at the middle. Select[...]

11-4 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) B. Points to Note for Servicing Copyboard cover Item Tools/solvent Work/remarks Copyboard glass Scanning lamp Reflecting plate No. 1 through No. 6 mirror Alcohol Alcohol Lint-free paper Blower brush Cleaning. Cleaning. Dry wiping. If dirt cann[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-5 I I . STANDARDS AND ADJUSTMENTS A. Mechanical 1. Copier a. Leading Edge Non-Image Width Make adjustments so that the leading edge non-image width is 2.0 ±1.5 mm when the Test Sheet is copied in Direct. Caution: If [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-6 b. Image Leading Edge Margin (registration activation timing) Make adjustments so that the leading edge margin is 2.5 ±1.5 mm when the Test Sheet is copied. Caution: Be sure to check that the leading edge non-image [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-7 c . Adjusting the Mirror Position (optical length between No. 1 mirror and No. 2 mirror) If you have replaced the scanner drive cable, you must adjust the mirror position, by changing the position of the cable retai[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-8 4) Turn the cable drive pulley [3] so that the three shafts [2] of the mirror positioning tool for the front and the rear may be arranged as shown. Figure 11-207 (rear) Figure 11-208 (front) [3] [2] [2] [2] [2][...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-9 5) While keeping the condition of 4), tighten the positioning screw at the rear and the front of the No. 1 mirror mount [1]. Figure 11-209 (rear) Figure 11-210 (front) [1] [1][...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-10 d. Checking the Force of the Cassette Spring If the force of the spring used to hold up the holding plate of the cassette is not correct, pickup faults or the like can occur. If a fault is suspected, check the force[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-11 e-1. Routing the Scanner Drive Cable Figure 11-212 Wind 1.5 times. (black cable) Wind 7.5 times. (silver- colored cable)[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-12 e-2. Routing the Scanner Drive Cable 1. Before Starting the Work Prepare the following: • Mirror positioning tool (FY9-3009) • Cable clip (FY9-3017) • Adhesive tape 1) Set the mirror positioning tool as shown.[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-13 5) If the machine is equipped with an ADF, free the hook [2], and disconnect the two relay connec- tors [3] from the left upper stay [4]. Figure 11-215 6) Remove the three screws [5], and detach the left upper stay[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-14 7) Remove the four screws [7], and detach the lens cover [8]. Figure 11-217 [7] [7] [8][...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-15 2. Routing the Reversing Cable 1) Wind the reversing cables (silver-colored) [2] on the cable drive pulley [1] 7.5 times with the longer of the two on top; then, secure it in position with a cable clip [3]. Figure [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-16 2) Put the cable drive pulley [1] into the shaft [4], and secure it in position with an E-ring [5]. When putting the cable drive pulley into the shaft, be sure that the hook is at the front. Figure 11-220 3) Hook th[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-17 4) Lead the shorter end [6] under the No. 1 mirror mount [8] and the No. 2/3 mirror mount [9]; then, hook it on the left rear pulley [10] and the pulley [11] of the No. 2/3 mirror mount. Figure 11-222 5) After fitt[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-18 6) Lead the longer end [14] along the cable drive pulley, and hook it on the pulley [15] on the right front side. Figure 11-224 7) Lead the longer end [14] under the No. 1 mirror mount [8] and the No. 2/3 mirror mou[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-19 8) Hook the longer cable [14] on the cable hook [18]; then, secure its end to the left side with adhesive tape [19]. Be sure that the secured end of the cable is found where the hole in the left side plate and the [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-20 3. Routing the Forwarding Cable 1) Fit the longer end forwarding cable (black) [2] on the top hook of the cable drive pulley [1], and wind it 1.5 times. Then, secure the shorter end [3] as shown with adhesive tape [[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-21 3) Lead the longer end [5] under the No. 1 mirror mount [7]; then, hook it on the pulley [8] of the No. 2/3 mirror mount, and lead it between the No. 1 mirror mount [7] and the scanning lamp [9]. Figure 11-229 4) H[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-22 5) Free the shorter end [3], and hook it on the pulley [11] on the right rear side. Figure 11-231 6) Lead the shorter end [3] under the No. 1 mirror mount [7], and hook it on the pulley [12] of the No. 2/3 mirror mo[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-23 7) Hook the end of the shorter end [3] on the hole [13] on the right side. Figure 11-233 8) Free the shorter end [3] and the longer end [5] (reversing cable), and connect both with a spring [14]; then, fit the stop[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-24 9) Detach the pulley clip [16] from the cable drive pulley [1]. Figure 11-235 [1] [16][...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-25 4. Positioning the No. 1 Mirror Mount 1) Fix the rear and the front of the No. 1 mirror mount [1] temporarily to the metal fixing [2] of the forwarding cable. Figure 11-236 (rear) Figure 11-237 (front) [1] [2] [1] [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-26 2) Turn the cable drive pulley [4] so that the three shafts [3] of the mirror positioning tool for rear and front is as shown. Figure 11-238 (rear) Figure 11-239 (front) [4] [3] [3] [3] [3][...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-27 3) While keeping the condition of step 2), tighten the positioning screw on the rear and front of the No. 1 mirror mount [1]. Figure 11-240 (rear) Figure 11-241 (front) [1] [1][...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-28 f . Point to Note When Mounting the Scanning Lamp When mounting the scanning lamp, be sure that its logo mark (manufacturer’s name) is toward the front. Further, be sure that the protrusion near its middle is as s[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-29 g. Points to Note When Mounting the Fuse When mounting the thermal fuse of the No. 1 mirror mount, be sure that the fuse is oriented as shown. Make sure that the fuse is in contact with the reflecting plate. Figure[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-30 B. ADF 1. Adjusting the Original Stop Position Adjust the original stop position in the following order: 1. Correcting original skew 2. Adjusting the rear/front original stop position 3. Adjusting the original leadi[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-31 3) Press the Copy Start key to make a copy. 4) Check to make sure that the difference between L1 and L2 on the copy is 1.8 mm (standard) or less. Figure 11-246 5) If the difference is not as specified, turn the adj[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-32 3. Adjusting the Rear/Front Original Stop Position You must first correct original skew before adjusting the rear/front original stop position. 1) Obtain a sheet of A4 or LTR white copy paper, and draw two lines as [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-33 3) Turn on the machine, and place the test sheet prepared in step 1) on the original tray. Figure 11-250 4) Press the Copy Start key to make a copy. 5) Check to make sure that the distance L3 on the copy image indi[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-34 6) If the distance is not as specified, loosen the pinion gear positioning screw under the original tray, and adjust the position of the pinion gear. Figure 11-252 Relationship between Pinion Gear Position and L3 Ta[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-35 4. Adjusting the Original Leading Edge Stop Position You must first correct original skew and adjust the rear/front original stop position before adjusting the original leading edge stop position. 1) Obtain a sheet[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-36 3) Turn on the machine, and place the test sheet prepared in step 1) on the original tray. Figure 11-255 4) Press the Copy Start key to make a copy. 5) Check to make sure that the distance L4 on the copy image indic[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-37 6) If the distance is not as specified, shift bit 1 of the DIP switch (SW1) on the ADF controller PCB to ON, and place an A4 or LTR white copy paper on the original tray. Figure 11-257 7) Press the push switch (PSW[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-38 8) Use the rotary switch (SW2) on the ADF controller PCB to adjust the original leading edge stop position. Moving the rotary switch by a single notch changes the original stop position by about 0.3 mm. Press the pu[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-39 Example: If L4 is 13 mm, You must shift the original stop position toward the leading edge by 3 mm. 1) Place a sheet of A4 or LTR white copy paper on the original tray. 2) Shift bit 1 of the DIP switch (SW1) on the[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-40 4) Press the push switch (PSW) on the ADF controller PCB. • The copy paper on the copyboard will be discharged, and the optimum value will be stored. Figure 11-262 0 F E D C B A 9 8 7 6 5 4 3 2 1 ON 12 PSW[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-41 C. Electrical 1. After Replacing the Major Parts *1: If you have replaced the composite power supply PCB, check copy images using the Test Sheet; if (and only if) an image fault is found, adjust the intensity of th[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-42 2. Adjusting the Intensity of the Scanning Lamp Adjust the intensity of the scanning lamp if you have replaced any of the following: • DC controller PCB • Composite power supply PCB (See p.11-41.) • Scanning l[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-43 3. AE Adjustment Perform this adjustment if you have replaced any of the following: • DC controller PCB • Composite power supply PCB (See p.11-41.) • AE sensor PCB • Scanning lamp Making Adjustments Before [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-44 4) Turn VR103 on the DC controller PCB fully clockwise. Figure 11-266 5) Place a newspaper on the copyboard, and close the copyboard cover. 6) Turn VR102 so that the display indicates ‘A3’ to ‘Ad’. Figure 11[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-45 9) Repeat steps 5) through 8) so that the values of both VR102 and VR103 are target values. Caution: If you cannot set VR102 and VR103 to the target values at the same time, turn VR103 fully counterclockwise, and g[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-46 4. Adjusting the Reproduction Ratio (fine adjustment) Adjust the reproduction ratio if you have replaced the following: • DC controller PCB Making Adjustments Before Starting the Work • Meter 1) Before replacing[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-47 5. Checking the Photointerrupters 1) Set the meter range to 12 VDC. 2) Connect the - probe to GND (CPGND1) on the DC controller PCB. Figure 11-271 3) Make checks as instructed. Reference: The photointerrupers other[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-48 III. TROUBLESHOOTING IMAGE FAULTS A. Making Initial Checks 1. Site Environment Check the site against the following considerations: a. The voltage of the power source is as rated. b. The site must not be subject to [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-49 8. Consumable a. Cartridge When the cartridge starts to run out of toner, copies will start to have white lines or spots as shown. Figure 11-301 Try the following as necessary: 1) Take out the cartridge from the ma[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-50 9. Others When a machine is brought in from a cold place (e.g., warehouse) to a warm place, condensa- tion can occur inside it, leading to various problems; e.g., a. Condensation on the scanner (glass, lens, mirror,[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-51[...]

11-6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-52 NOTE: The samples are created intentionally. The NA-3 Test Sheet was copied in the direct mode in A3 and printed with a reduction of about 19%; actual images may be somewhat different.[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-53 C. Troubleshooting Image Faults 1 The copy is too light. (halftone area only) 2 The copy is too light. (including solid area) 3 The copy is too light. (enter image, appreciably) YES/NO YES NO NO YES YES NO YES NO C[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-54 4 The copy has uneven density. (darker at front) 5 The copy has uneven density. (lighter at front) YES/NO YES YES NO Cause Scanner Cartridge, Scanning lamp Transfer charging roller Step 1 2 Checks Clean the scanning[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-55 10 The copy has white spots. (vertical) 11 The copy has white lines. (vertical) YES/NO YES YES YES YES NO Cause Fixing assembly Cartridge Static elimi- nator Transfer charging roller Cartridge Step 1 2 3 4 Checks T[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-56 13 The back of the copy is soiled. YES/NO NO YES YES NO Cause --------------- Transfer guide assem- bly Feeding assembly Pickup guide assembly, Delivery roller Step 1 2 3 Checks Turn off the power while copy paper i[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-57 14 The copy has a fixing fault. YES/NO NO YES NO YES Cause Copy paper Fixing film Fixing heater DC control- ler PCB, Composite power supply PCB Step 1 2 3 Checks Is the copy paper of a recommended type? Is the prob[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-58 19 The copy has horizontal fogging. YES/NO YES YES NO YES NO Cause Scanning lamp Cartridge, High-voltage transformer assembly Scanning system Feeding system Step 1 2 3 Checks Does the scanning lamp flicker? Replace [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-59 20 The copy has poor sharpness. (out-of-focus) YES/NO YES YES NO NO YES NO Cause --------------- Original Lens Mirror position Scanner Cartridge Step 1 2 3 4 5 Checks Is the image also too light? Is the original of[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-60 22 The copy is solid black. YES/NO NO YES Cause --------------- Step 1 Checks Does the scanning lamp remain on during copying? Action See “The scanning lamp fails to turn on.” Is the cartridge set correctly?[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-61 IV. TROUBLESHOOTING MALFUNCTIONS A. Troubleshooting Malfunctions 1E 0 YES/NO YES NO Cause ---------------- Step 1 Checks 1) Turn off the power, and short JP101 and JP102 on the DC controller PCB with a screwdriver.[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-62 CHAPTER 11 TROUBLESHOO TING 11-62 2 E000 YES/NO NO NO YES YES NO Cause Thermistor (TH1) Heater, Fuse (FU2) Thermistor (TH1) Composite power supply PCB DC control- ler PCB Step 1 2 3 4 Checks Are the connection of J102 on the DC controller PCB [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-63 4 E002, E003 YES/NO NO NO YES YES NO Cause Thermistor (TH1) Heater, Fuse (FU2) Thermistor (TH1) Composite power supply PCB DC control- ler PCB Step 1 2 3 4 Checks Is the connection of J102 on the DC controller PCB [...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-64 CHAPTER 11 TROUBLESHOO TING 11-64 6 E064 YES/NO YES NO YES YES YES YES NO Cause Wiring High-voltage contact Transfer charging roller Primary charging roller High-voltage cable Composite power supply PCB DC control- ler PCB Step 1 2 3 4 5 6 Che[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-65 8 E210 YES/NO NO NO YES Cause ---------------- Lens home position sensor (PS2) DC control- ler PCB Step 1 2 Checks Does the lens move when the power is turned on? Is the lens home position sensor (PS2) normal? (For[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-66 CHAPTER 11 TROUBLESHOO TING 11-66 12 E400 YES/NO YES NO YES NO Cause ---------------- 5V power supply ADF con- troller PCB Step 1 2 3 Checks Turn off and then on the power. Is the probrem corrected? Set the matter to the 20VDC range, and conne[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-67 14 AC power fails to turn on. YES/NO NO YES NO NO YES YES NO NO NO NO NO YES NO Cause Power plug ---------------- Machine top unit Power supply Fuse (FU501) Fuse (FU102) Door switch (DS1) Noise filter PCB Harness C[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-68 CHAPTER 11 TROUBLESHOO TING 11-68 15 DC power fails to turn on. YES/NO NO YES YES NO Cause AC power supply Wiring, DC load Fuse Composite power supply PCB Step 1 2 3 Checks Is AC power present between J201-1 and -2 on the composite power suppl[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-69 16 Pickup fails. (cassette) YES/NO NO NO NO NO NO YES Cause Main motor (M1) Cassette Paper in cassette Pickup clutch solenoid (SL1), Cassette pickup solenoid (SL5) Cassette spring DC control- ler PCB Step 1 2 3 4 5[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-70 CHAPTER 11 TROUBLESHOO TING 11-70 17 Pickup fails. (multifeeder) YES/NO NO NO NO NO YES Cause Wrong operation Main motor (M1) Paper place- ment Multifeeder pickup solenoid (SL4), Pickup clutch solenoid (SL1) DC control- ler PCB Step 1 2 3 4 Ch[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-71 19 The scanner fails to move forward. YES/NO NO NO NO NO YES NO Cause Cable Scanner path Composite power supply PCB Pre-registra- tion roller paper sensor (Q751) Scanner/lens drive motor (M2) DC controller PCB Step[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-72 CHAPTER 11 TROUBLESHOO TING 11-72 21 The blanking lamp fails to turn on. YES/NO NO YES Cause Side blank- ing PCB DC control- ler PCB Step 1 Checks Remove J106 from the DC control PCB, and set the meter range to 1 k Ω ; then, connect the mete[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-73 23 The lens fails to turn on. YES/NO NO NO NO YES NO Cause Lens sole- noid (SL3) Lens cable, Pulley, Rail DC power supply Scanner/lens drive motor (M2) DC control PCB Step 1 2 3 4 Checks Does the lens solenoid (SL3[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-74 CHAPTER 11 TROUBLESHOO TING 11-74 25 The "Add Paper" message fails to turn off. YES/NO NO NO NO NO YES NO Cause Cassette Lens cable, Pulley, Rail DC power supply Vertical path roller paper sensor (PS4) Control panel PCB DC control- l[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-75 V. TROUBLESHOOTING FEEDING PROBLEMS A. Copy Paper Jam Inside the machine, jams tend occur in the following blocks: [1] Pickup block [2] Separation/feeding block [3] Fixing/delivery block The troubleshooting procedu[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-76 1 Pickup Assembly YES/NO NO NO YES YES NO NO NO YES Cause ---------------- Cassette Copy paper Copy paper DC control- ler PCB, Pickup clutch Registration roller drive assembly Vertical path roller paper sensor (PS4)[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-77 2 Separation/Feeding Assembly YES/NO YES YES YES NO YES NO YES NO Cause Copy paper Feeding assembly Feed belt, Roller Static elimi- nator Pre-registra- tion roller paper sensor (Q751) Registration roller Registrati[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-78 B. Faulty Feeding 1 Double-Feeding YES/NO NO NO YES NO YES Cause Cassette Copy paper Claw (cas- sette) Step 1 2 3 4 Checks Is the copy paper placed under the claw properly? Push down the copy paper inside the casset[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-79 VI . ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS A. Sensors and Solenoids Figure 11-601 PS SL Description Scanner home position detection Lens home position detection Delivery assembly paper detection Vertical pa[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-80 B. Switches Figure 11-602 Description Door switch Power switch Density correction switch Symbol Name Switch Switch Notation DS1 SW309 SW101 Remarks DS1 SW309 SW101[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-81 C. Lamp, Heater, Motor, Etc. Figure 11-603 Description Scanning lamp Fixing heater Main motor Scanner/lens drive motor Scanner cooling fan Fixing heater temperature detection Scanner temperature detection Lamp over[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-82 D. PCBs Figure 11-604 [2] [1] [3] [4] [5] [6] [7] [8] [9] Description Removes noise from the power supply. Controls sequence of operations. Supplies DC power, generates high voltage, and controls the scanning lamp. [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-83 E. ADF Description Delivery paper detection Registration roller paper detection Original placement detection ADF open/close switch Belt motor Pickup motor Controls sequence of operations Symbol [1] Name Photointerr[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-84 F. Variable Resistors (VR) and Check Pins by PCB Of the variable resistors (VR) and check pins, those needed in the field are discussed herein. Those not found in the discussions are for the factory only, requiring [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-85 3. ADF Controller PCB Figure 11-608 1 10 TP1 1 9 J5 1 8 4 J2 1 J1 CB1 21 J6 7 1 J3 FACE PSW SW1 SW2 12 ON Soldered side[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-86 VII. SELF DIAGNOSIS The microprocessor on the machine’s DC controller PCB is equipped with a self diagnostic mechanism that checks the condition of the machine (particularly, sensors) and indicates an error code i[...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) 11-87 Code Cause Description • The main motor (M1) is fault. • The DC controller PCB is faulty. • The composite power supply PCB is faulty. • The DC controller PCB is faulty. • The scanner home position sensor [...]

CHAPTER 11 TROUBLESHOO TING COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) 11-88 Caution: 1. If the self-diagnosis has turned on, turn off the power switch to reset the machine. In the case of ‘E000’, ‘E001’, ‘E002’, or ‘E003’, however, the machine must be reset as follows: this [...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900 s R EV . 0 AU G. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) APPENDIX A. GENERAL TIMING CHAR T ........ A-1 B. SIGNALS AND ABBREVIA TIONS ....................... A-3 C . GENERAL CIRCUIT DIA GRAM ................................... A-5 D . DC CONTROLLER CIRCUIT DIA GRAM ...................................[...]

[...]

A-1 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) Power switch ON Copy Start key ON Sequence STBY INTR AER SCFW SCRV LSTR STBY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 18 19 20 15 16 17 Main motor (M1) Lens solenoid (SL3) Scanner / lens drive motor (M2) Scanner home position sensor (PS1) Lens home p[...]

A-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) Power switch ON Sequence 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pickup motor (M2) Belt motor (M1) Original detection sensor (PI3) Registration paper sensor (PI2) Delivery sensor (PI1) Main motor (M1) Scanner home position[...]

A-3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) B. SIGNALS AND ABBREVIATIONS 1. Signals ACBIAS AC BIAS OSCILLATION signal [AE] AE SENSOR OUTPUT signal AEREF AE SENSOR REFERENCE signal BIAS_PWM DC BIAS CONTROL signal BIAS_S DC BIAS MONITOR signal CLK32K TRANSFORMER CONTROL signal CPUSD CASS[...]

A-4 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON)[...]

A-5 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 123456789 1 0 1 1 J109 +24VU +24VU GND +5V +24VU +24VU 1 2 3 4 5 6 123456 J51 1 J52 2 21 J53 2 1 1 2 SL SL3 SL1 SL SL2 J54 SL 1 2 2 1 1 3 2 321 J55 SL4 SL 2 31 J56 PS2 J57 PS5 2 3 1 3 J113 1 2 DIG2 GND 3 J132 1 24 5 +5V +24VU GND SL5 SL 1 2 J[...]

A-6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) 2. ADF 4321 3 42 1 34 2 34 2 1 1 2 4 15 GND BL L +5V BR +24V GND D OR GN J24 J202 T o composite power supply T o DC controller 4 3 2 1 J114 6 87 5 J23 Y BL V ACK REQ GND GND L L BL 5 4 TxD GY 6 3 GND L BL 7 2 RxD W 8 1 GND L BL 8 7 6 5 1234 7 [...]

A-7 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 PA7 PA6 PA5 PA4 PA3 PA2 PA1 PA0 Vss P84 P83 P82 P81 P80 AVss P77 P76 P75 P74 P73 P72 P71 P70 Vref AVcc P47 P30 P31 P32 P33 P34 P35 P36 P37 Vcc P10 P11 P12 P13 P14 P15[...]

A-8 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) DC Controller Circuit DIagram (2/8) Q165 SC_I_SEL3 +5V R277 SC_I_SEL1 R117 Q112 SC_I_SEL2 SC_INB* SC_INB SC_INA* SC_INA R267 Q155 R115 OUTA* 1 TdA 2 REFA 3 GA 4 INA* 5 INA 6 VSA 7 OUTA 8 RSA 9 RSB 10 OUTB* 11 VSB 12 TdB 13 REFB 14 GB 15 INB* 1[...]

A-9 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) DC Controller Circuit Diagram (3/8) R119 R118 VR102 2 3 1 +5V C184 Q106 +24VR - + 2 3 1 8 4 R266 AEREF R265 R264 R263 VR103 2 3 1 +5V C186 C185 C111 C155 Q106 +24VR - + 6 AE 5 7 8 4 R206 R120 AE_DATA R121 ZD101 21[...]

A-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) DC Controller Circuit Diagram (4/8) D106 CDP 5 12 D108 DPD 3 12 D109 SFPD 7 12 D218 SERVICE 2 12 D113 HEAT1 3 12 D102 HEAT0 2 8 7 7 KR7 8 KEY<7..0> 12 D114 [CPM1] DIG1 D114 10CPM 12/13CPM KR6 12 D115 [CPM0] DIG0 KR6 12 D103 [SIZE0] DIG3[...]

A-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) DC Controller Circuit Diagram (5/8) 1 2 R145 + Q131 3 2 1 R158 R149 R140 R139 E0_DT R148 Q107 +5V - + 2 3 12 15 34 VSS IN A IN B VDD OUT X 8 4 R275 ZER_CRS_EDGE +5V R279 R293 VR105 2 BL_VR 3 1 +5V R278 R294 VR104 2 RGAD_VR 3 1 +5V R382 VR107[...]

A-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) DC Controller Circuit Diagram (6/8) LNSLD Q145 3 2 1 LNSLD* D211 21 D125 21 D126 21 D127 21 D124 21 +24VU R165 PUSLD Q144 3 2 1 PUSLD* R162 RGSLD Q143 3 2 1 RGSLD* R161 MFSLD Q142 3 2 1 MFSLD* R166 FM1D Q200 FM1D* R352 CPUSD Q201 CPUSD* R353 [...]

A-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) DC Controller Circuit Diagram (7/8) D184 D185 POWER_OFF* HEAT_ERR* COMP_CLR R189 R188 Q146 3 2 1 Q147 3 2 1 +5V R186 R187 +5V R196 +5V + 12 C142 R193 R192 R190 +5V Q107 +5V – + 6 5 7 8 4 R191 R212 R214 D128 21 D133 21 RLOFF* HEAT_TRG C143 [...]

A-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) DC Controller Circuit Diagram (8/8) R385 R200 +5V +5V J101 1 R363 +5V +24VU +5V R365 J101 3 SCHP J102 1 TH1 J102 2 DIG1 J102 3 HEAT0 J102 4 DIG1 J102 5 HEAT1 DIG3 DPD J102 6 J105 3 J105 4 J105 5 J105 6 J114 1 J114 2 J105 1 J105 2 J101 2 R388 [...]

A-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) E. ADF CONTROLLER CIRCUIT DIAGRAM ADF Controller Circuit Diagram (1/3) XT AL 1 64 RES* 63 P66/IRQ2* 62 P65/IRQ1* 61 P64/IRQ0* 60 P63/FTI 59 P62/FT OB 58 P61/FT OA 57 P60/FTCI 56 P37/D7 55 P36/D6 54 P35/D5 53 P34/D4 52 P33/D3 51 P32/D2 50 P31[...]

A-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) ADF Controller Circuit Diagram (2/3) 2 TdA GND 4 INA 6 OUT A 8 VSA 7 5 INA* 3 V refA 1 OUT A* Q4 C1 1 +5V R10 Q8 +5V R16 LED J7 2 1 J7 6 J3 OUT2 5 OUT A* 2 IN2 IN1 1 OUT1 3 OUT A 7 J3 4 GND 6 7 +24V NC VCC Q5 DM1 TP1 7 DM0 6 TP1 C12 R1 1 +5V [...]

A-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) ADF Controller Circuit Diagram (3/3) Q10 TXD 1 J5 R43 R28 DIGIT0 R27 R26 R25 +5V DIGIT1 DIGIT2 DIGIT3 1 2 4 8 SW2 5 2 J5 3 J5 R24 +5V R23 +5V TP1 9 PDP1 C18 R22 TP1 C17 PDP2 R42 8 R21 5 4 +5V 6 J5 J5 J5 +5V R20 C16 PDP3 R41 R19 8 7 +5V 9 J5 [...]

A-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON)[...]

A-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) F. COMPOSITE POWER SUPPLY CIRCUIT DIAGRAM Composite Power Supply Circuit Diagram [A502] (1/8) AC_INPUT D603 R606 D606 C613 Q608 R602 C609 Q616 Q617 Q621 C604 Q605 VIN_1SR139 C818 C603 R601 R600 Q615 R616 R801 R609 C620 R613 R610 R612 R611 R6[...]

A-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) Composite Power Supply Circuit Diagram [A503] (2/8) AC_N_AF AC_H_AF AC_HA R116 TH101 TH102 FB104 FU102 Q105 AC_LA <A502> <A509> <A509> <A502> MPWM MPWM_INV <A508> <A504> Q113 C588 D542 D543 R644 R108 D121 D[...]

A-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) Composite Power Supply Circuit Diagram [A504] (3/8) MPWM_INV <A508> R136 R155 C122 D107 R138 Q109 D105 FB102 FB103 T105 R128 C153 R167 R131 +24VR C125 R130 R145 +5V +5V + + + L101 +5V R169 R148 R156 D119 +24VR 4 8 4 1 3 2 C143 C145 C14[...]

A-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) Composite Power Supply Circuit Diagram [A505] (4/8) 3 4 4 1 1 2 2 5 3 10 9 C512 R514 R212 P AC_OUT JP140 PDC_PWM <A508> Q201 R211 C202 C204 D202 R209 R206 C206 <A508> <A503> <A503> PDC_S R205 R203 C201 R202 T101 MV_H M[...]

A-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) Composite Power Supply Circuit Diagram [A506] (5/8) JP201 R210 <A503> <A503> C218 C215 <A508> <A508> <A508> ACBIAS BIAS_S BIAS_PWM R243 R207 C219 D215 C208 D214 R237 R239 R208 +5V Q206 R238 C221 T201 D207 D206 D[...]

A-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) Composite Power Supply Circuit Diagram [A507] (6/8) JP301 C346 C345 +5V R351 R356 Q321 D325 C344 C343 C321 C380 C382 C381 C379 C322 C342 <A508> T_REV_R T_FW_S HV_LIMIT <A508> <A508> <A508> T_FW_DR V T_FEEDBACK T_FW_ON [...]

A-25 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) Composite Power Supply Circuit Diagram [A508] (7/8) <A504> <A507> <A506> <A505> <A504> <A503> <A504> <A507> <A507> <A507> +5V +5V +5V <A505> P AC_S HV_LIMIT Q901 RESET R802 VR[...]

A-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU JAPON) Composite Power Supply Circuit Diagram [A509] (8/8) R028 R020 R021 R013 R012 R027 R006 R008 R018 D005 D006 C002 C004 +5V Q002 D002 Q003 R016 Q011 Q001 C005 <A508> LAMP_DETECT <A508> <A508> PWM_1KHz LAMP_ON D004 R011 R009 R06[...]

A-27 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) G. CONTROL PANEL CIRCUIT DIAGRAM J301 13 KR0 J301 14 KR1 J301 1 DIG0 J301 2 DIG1 J301 3 DIG2 J301 4 DIG3 J301 19 DIG4 J301 5 SEG0 SW304 SW308 PRESET COPY RATIO SW303 ZOOM CASSETTE/MULTI SW307 AE SW302 CLR SW306 COPY SW301 – SW305 + C303 R3[...]

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COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) A-29 APPENDIX H. AE SENSOR CIRCUIT DIAGRAM +24VR R603 R605 R601 C601 Q601 PD601 C603 R606 R602 J601-1 C602 +24VR + 2 3 1 8 4 J601-2 R604 Q601 +24VR + 6 5 7 8 4 J601-3 J601-4[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) A-30 APPENDIX I. SENSOR CIRCUIT DIAGRAM +5V J751-2 RPD J751-3 R751 GND J751-1 Q751[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) A-31 APPENDIX J. NOISE FILTER CIRCUIT DIAGRAM AC_H FU501 L501 J501-1 FG AC_N J501-2 JP502 JP501 C503 C502 C501 R501 C504[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) A-32 APPENDIX K. HIGH VOLTAGE CONTACT CIRCUIT DIAGRAM JP701 2 1 JP702 2 1 PR BP701 R704 JP703 2 1 JP704 2 1 SP BP702 JP705 2 1 JP706 2 1 DV BP703 R701 JP707 2 1 JP708 2 1 TR BP704 R702 JP709 2 1 JP710 2 1 [PR_IN] BP705 JP711 2 1 JP712 2 1 [GND_IN] B[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) A-33 APPENDIX L. BLANK EXPOSURE (front) CIRCUIT DIAGRAM LA601 J601 J601 2 1[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) A-34 APPENDIX M. BLANK EXPOSURE (rear) CIRCUIT DIAGRAM LA602 J602 J602 2 1[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU J APON) A-35 APPENDIX N. SPECIAL TOOLS You will need the following special tool(s) in addition to the standard tools set when servicing the machine. For checking the cas- sette spring pressure Range of measure- ments: 0 to 1,500g No CK-0054 Shape Tool Tool[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 AUG. 1999 PRINTED IN JAP AN (IMPRIME AU JAPON) A-36 APPENDIX O. SOLVENTS/OILS No. 1 2 3 4 Remarks • Do not bring near fire. • Procure locally. • Isopropyl alcohol may be substituted. • Do not bring near fire. • Procure locally. • CK-0451 (100cc) • CK-0551 (20g) Composition Hydrocar[...]

COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV .0 A UG. 1999 PRINTED IN J AP AN (IMPRIME AU J APON) Prepared b y Office Imaging Pr oducts T echnical Support Division CANON INC. Printed in Japan REVISION 0 (A UG. 1999) (30359/10317) 5-1, Hakusan 7-chome, T oride-shi, Ibaraki 302-8501 Japan[...]

0899AB2.135-1 PRINTED IN JAP AN (IMPRIME AU JAPON) This pubication is printed on 70% reprocessed paper.[...]