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Canon PC920 Service Manual

Service manual
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Table of Contents
REVISION 0
PC860
F13-8491
PC880
F13-8291
PC890
F13-8242
PC920
F13-8431
F13-8441
F13-8461
PC921
F13-8432
AUG. 1999
COPYRIGHT © 1999 CANON INC.
TYA00001-
TZA00001-
UAA00001-
TVB00001-
PUD00001-
PUE00001-
PUH00001-
TVC00001-
FY8-13GA-000
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
PC940
F13-8436
PC941
F13-8437
PC950
F13-8231
F13-8241
PC960
F13-8434
PC980
F13-8232
PC981
F13-8233
TVD00001-
TVE00001-
TVF00001-
PUF00001-
PUG00001-
TVG00001-
TVH00001-
TVJ00001-

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  Also See for Canon PC920

  Summary of Contents for Canon PC920

  • Page 1 PC920 PUG00001- F13-8431 TVB00001- F13-8441 PUD00001- PC960 PUE00001- F13-8434 TVG00001- F13-8461 PUH00001- PC980 PC921 F13-8232 TVH00001- F13-8432 TVC00001- PC981 F13-8233 TVJ00001- FY8-13GA-000 AUG. 1999 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 2 IMPORTANT THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE OF REFERENCE FOR WORK IN THE FIELD. SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER.
  • Page 3 Chapter 11 Troubleshooting provides tables of maintenance/inspection, standards/ adjustments, and problem identification (image fault/malfunction). Appendix contains a general timing chart and general circuit diagrams. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 4 All service persons are expected to have a good understanding of the contents of this Service Manual and all relevant Service Information bulletins and be able to identify and isolate faults in the machine. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 5 500 sheets PC960 3R1E Universal PC980 3R1E 500 sheets PC981 3R1E 500 sheets The notation “ ” indicates that the item in question is available. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 7: Table Of Contents

    C. Lens Drive System ....3-3 B. Lens Drive Assembly ..3-31 D. Scanner Drive System ..3-4 C. Exposure System ....3-37 EXPOSURE SYSTEM ....3-9 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 8 DISASSEMBLY/ASSEMBLY ..5-18 CHAPTER 6 FIXING SYSTEM OPERATIONS ......6-1 DISASSEMBLY/ASSEMBLY ..6-10 A. Outline ........6-1 A. Fixing Assembly ....6-11 B. Controlling the Fixing Temperature ......6-3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 9 CONSUMABLES ...... 10-1 Cartridge with the Packaging III. SCHEDULED SERVICING ..10-1 Seal Removed ....10-3 IV. STORING AND HANDLING THE CARTRIDGE ..... 10-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 10 N. SPECIAL TOOLS ...... A-35 G. CONTROL PANEL CIRCUIT O. SOLVENTS/OILS ...... A-36 DIAGRAM ......... A-27 H. AE SENSOR CIRCUIT DIAGRAM ......... A-29 viii COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 11 III. NAMES OF PARTS ....1-10 VI. IMAGE FORMATION ....1-20 A. External View ..... 1-10 A. Outline ........ 1-20 B. Cross Section ..... 1-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 13: Chapter 1 General Description

    • The machine’s top unit may be opened to make jam removal easy. ADF Type • Continuous copying is possible with the use of the ADF. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 14: Specifications

    Single-feeder (single-feeder type) Multifeeder (multifeeder type) Separation Curvature separation + static eliminator Fixing Flat heater Cleaning Blade Original orientation Center reference (copyboard) Table 1-202 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 15 Leading edge: 2.0 ±1.5 mm (Direct; 4.0 mm or less otherwise) Left/right: 0.0 +2.0, -0.0 mm (0 +4.0, -0.0 mm for LTR) Auto power-off Provided (5 min, approx.; fixed) Table 1-203 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 16 Upon delivery, be sure to remove each from the copy tray. Be sure to remove any curling before feeding for a second time. If stopped because paper ran out during copying operation, 1 hr. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 17 Copy paper: Keep wrapped, and protect against humidity. Toner: Avoid direct sunlight, and store at 40°C/104°F, 85% or less. Table 1-204 250-sheet cassette type 500-sheet cassette type COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 18 1:1.000 1:1.000 Reduce I 1:0.707 1:0.707 Reduce II 1:0.786 Reduce III 1:0816 Reduce IV 1:0.860 Enlarge I 1:1.154 Enlarge II 1:1.414 1:1.414 Table 1-205 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 19 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 product improvement. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 20: Adf

    24 VDC and 5 VDC (from the host) Maximum power consumption 40 W or less Temperature: same as the host Operating environment Humidity: same as the host Table 1-207 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 21 • Sheet with a carbon back. • Sheet with a cut-and-paste piece. • Sheet with curling, bending, or wrinkling. The specifications are subject to change for product improvement. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 22: Names Of Parts

    [1] Copy tray [4] Static eliminator [2] Power cord connector [5] Copy density correction switch [3] Open/close lever [6] Delivery guide plate Figure 1-302 1-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 23 [5] Open/close lever [2] Delivery guide plate [6] Static eliminator [3] Copy tray [7] Copy density correction switch [4] Power cord connector Figure 1-304 1-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 24 CHAPTER 1 GENERAL DESCRIPTION [1] Original tray [3] Slide guide [2] Original delivery tray [4] Auxiliary tray Figure 1-305 1-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 25: Cross Section

    [28] Copy tray [9] Primary charging roller [19] Developing cylinder [29] Single-feeder pickup roller [10] No. 6 mirror [20] Photosensitive drum Figure 1-306 1-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 26 [11] Feed belt [5] Copyboard tray [12] Feed belt roller [6] Auxiliary tray [13] Feed belt link slave roller [7] Guide plate Figure 1-307 1-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 27: Using The Machine

    Ratio: 100% Count: 1 Paper source: cassette Copy density: auto mode Copy start key Starts copying. Power switch Turns on and off the power. 1-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 28 Copy density mode selection Selects copying density mode. Table 1-401 Applies only to a multifeeder model. Applies only to a model equipped with a zoom function. 1-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 29: Routine Maintenance By The User

    • You cannot start feeder cleaning mode while the machine is making copies or if an error exists. • The auto power-off mechanism does not operate while feeder cleaning mode is being executed. 1-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 30: If Jams Occur Frequently

    Figure 1-502 If Jams Occur Frequently a. Static Eliminator 1) Remove the static eliminator cleaner from the machine. Figure 1-503 (Copyboard type) 1-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 31 • Brush out the paper lint or the like from the groove of the static eliminator. Figure 1-505 4) Close the machine as soon as you have finished cleaning. (Work briskly.) 1-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 32: Image Formation

    Side blanking lamp (front, rear) Primary charging roller Developing blade Cleaning blade Developing cylinder Fixing assembly Photosensitive drum Transfer charging roller Static eliminator Figure 1-601 1-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 33 Manual feed 4. Transfer Registration 6. Fixing 5. Separation Delivery Cassette : Flow of copy paper : Rotation of the photosensitive drum Figure 1-602 1-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 35 (M1) ........2-5 B. Outline of Electrical E. Inputs to and Outputs from Circuitry .........2-2 the DC Controller ....2-7 C. Basic Sequence of Operations ......2-3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 37: Chapter 2 Basic Operation

    Drum Developing drum cleaning block assembly Transfer/ separation Pickup Feeding control block Copy tray Fixing assembly/ Pickup/ Cassette delivery assembly feeding system Figure 2-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 38: Outline Of Electrical Circuitry

    • Cassette pickup solenoid Control Side blanking panel lamp Scanner/ lens drive motor Power switch Scanner cooling fan Sensor/ ADF load switch Figure 2-102 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 39: Basic Sequence Of Operations

    Developing DC bias Transfer bias Static eliminator bias Fixing heater (H1) I : Scanner home position detection II : Lens home position detection Figure 2-103 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 40 Direct. Neutralizes the drum surface potential LSTR From when SCRV ends to when the as post-processing. (last rotation) main motor stops. Table 2-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 41: Controlling The Main Motor (M1)

    Main motor drive (M1) circuit J203 J103 J104 J204 Hall IC output MLOCK MMCLK Composite power supply Reference signal Main motor drive PCB Figure 2-104 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 42 ‘1’. If the signal remains ‘1’ for about 1 sec, the DC controller will find the condition to be a fault in the main motor, and will stop the main motor and, at the same time, indicate ‘E010’ in the display. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 43: Inputs To And Outputs From The Dc Controller

    (analog signal) J131-1 When the temperature of the scanner increases, Scanner thermistor the voltage decreases. (analog signal) Figure 2-105 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 44 The variation in the resistance of the fixing heater HEAT0 is corrected in three levels based on combinations DIG1 of 2-bit signals. HEAT1 Figure 2-106 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 45 HVT board +24V J103-6 See p. 2-5. J104-1 Main MLOCK motor Main motor driver PCB See p. 3-7. Scanner/ lens drive motor Figure 2-107 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 46 FM1D* J106-1 SB_LP* Side blanking lamp (rear) When ‘0’, the blanking lamp turns on. +24V Side blanking lamp (front) Figure 2-108 2-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 47 DC controller PCB J114-1 To the ADF See Chapter 8. To the ADF J202-1 J105-6 +24V +24V Composite power supply PCB Figure 2-109 2-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 49 C. Lens Drive System ....3-3 B. Lens Drive Assembly ..3-31 D. Scanner Drive System ..3-4 C. Exposure System ....3-37 EXPOSURE SYSTEM ....3-9 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 51: Operations

    • Thermal fuse (FU1; blows at 128°C) Table 3-101 Copyboard glass Moves for enlargement/ Enlarge Reduce reduction Fixed focal point lens No. 4/5 mirror unit Photosensitive drum Figure 3-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 52: Varying The Reproduction Ratio

    (for enlargement) than the drum peripheral speed. Direct Optical length Reduction Optical length Enlargement Optical length Optical length: L1 < L2, L1 < L3 Figure 3-102 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 53: Lens Drive System

    Lens cable Reduction Enlargement Lens unit Lens home position sensor (PS2) Lens shift detecting shaft for side blanking lamp DC controller PCB Figure 3-103 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 54: Scanner Drive System

    The scanner/lens drive motor dives the lens drive system as well as the scanner. PS1 Light-blocking plate Scanner home position signal (SCHP) Scanner home position sensor (PS1) Q109 Motor driver circuit DC controller PCB Figure 3-104 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 55 130%, the scanner is moved forward as if for A4 (297 mm); if it is 130% or more, the scanner is moved forward as if for LTR (279 mm). For descriptions on how length is detected, see p. 5-10. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 56 II : By the time the Copy Start key is pressed or the power switch is turned off and then on again next time, the scanner is moved to and stopped at 105 mm forward from the home position. Figure 3-106 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 57 R399 SC-COM (Q101) SC-COM (Q109) SC-A SC-A* Motor SC-B driver circuit SC-B* Current switching signal 1 Current switching signal 2 Current switching signal 3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 58 If overcurrent flows to the scanner/lens drive motor for some reason, the fuse (R339) on the DC controller PCB will blow to cut the power to the motor. Caution: The fuse (R339) will not recover once it has blown. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 59: Controlling The Scanning Lamp

    (LA1) LAMP_ON (HIC001) Arcing circuit Activation detection signal Rectifying LAMP_DETECT circuit Activation detection circuit VR107 DC controller PCB Composite power supply PCB Figure 3-201 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 60 The scanning lamp turns on. When LAMP_ON is ‘1’, The phase control circuit turns off. The arcing circuit turns off. The scanning lamp turns off. 3-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 61 If an error has been detected, the power switch will be turned off after indicating an error code for 2 sec. 3-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 62: Disassembly/Assembly

    6. As a rule, do not operate the machine with any of its part removed. 7. A few of the screws used are special screws (with wider thread intervals). Do not use any screws indiscriminately. 3-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 63: Scanner Drive Assembly

    3) Remove the four screws [1], and detach the lens cover [2]. Figure 3-301 4) Disconnect the connector (J110) [3] from the DC controller PCB. Figure 3-302 3-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 64 30 mm in diameter) of a screwdriver. Figure 3-303 6) Remove the machine’s two fixing screws [4] from the scanner/lens drive motor [5]. Figure 3-304 3-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 65 8) Remove the E-ring [6]; then, lift the cable drive pulley [7] slightly, and detach the scanner/lens drive motor [5]. Lift. Figure 3-305 3-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 66: Outline Of The Scanner Drive Cable

    CHAPTER 3 EXPOSURE SYSTEM Outline of the Scanner Drive Cable Wind 1.5 times. (black cable) Wind 7.5 times. (silver-colored cable) Figure 3-306 3-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 67 3) Remove the copyboard glass. (See Chapter 7.III.C.1.“Removing the Copyboard Glass.”) 4) Disconnect the connectors (J101, J131) [1] from the DC controller PCB. Figure 3-308 3-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 68 [3] from the left upper stay [4]. Figure 3-309 6) Remove the three screws [5], and detach the left upper stay [4]. Figure 3-310 3-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 69 CHAPTER 3 EXPOSURE SYSTEM 7) Remove the four screws [6], and detach the lens cover [7]. Figure 3-311 3-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 70 [3]. Longer end Shorter end Face with a marking Figure 3-312 Top View Figure 3-313 3-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 71 (front) Figure 3-314 3) Hook the shorter end [6] on the pulley [7]. Figure 3-315 3-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 72 6) Lead the longer end [14] along the cable [14] drive pulley, and hook it on the pulley [15] on the right front side. [15] Figure 3-318 3-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 73 Be sure that the secured end of the cable is [14] found where the hole in the left side plate and the tip of the cable matches. Figure 3-320 3-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 74 [8] of the No. 2/3 mirror mount, and lead it between the No. 1 mirror mount [7] and the scanning lamp [9]. Figure 3-323 3-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 75 [12] of the No. 2/3 mirror mount as shown; then, lead it between the No. 1 mirror mount [7] and the scanning lamp [9]. Figure 3-326 3-25 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 76 8) Free the shorter end [3] and the longer end [5] (reversing cable), and connect both [14] with a spring [14]; then, fit the stopper [15]. [15] Figure 3-328 3-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 77 CHAPTER 3 EXPOSURE SYSTEM 9) Detach the pulley clip [16] from the cable drive pulley [1]. [16] Figure 3-329 3-27 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 78 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. Figure 3-330 (rear) Figure 3-331 (front) 3-28 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 79 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 3-332 (rear) Figure 3-333 (front) 3-29 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 80 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 3-334 (rear) Figure 3-335 (front) 3-30 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 81: Lens Drive Assembly

    3) Remove the main drive assembly. (See Chapter 7.III.D.2.“Removing the Main Drive Assembly.”) 4) Remove the four screws [1], and detach the lens cover [2]. Figure 3-336 3-31 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 82 Figure 3-337 6) Disengage the lever [5] of the No. 4/5 mir- ror mount and the gear [6]. Figure 3-338 3-32 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 83 [9], move it to the center of the machine. Caution: Do not hold the reflecting plate. Figure 3-340 9) Remove the spring [10]. [10] Figure 3-341 3-33 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 84 11) Free the lens cable [13] from the lens [13] cable fixing plate [12]; then, detach the lens cable from the machine. [12] Figure 3-343 3-34 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 85 [3] on the top face of the cam gear [2] match; then, engage the lever [1] and the cam gear [2]. Figure 3-345 3-35 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 86 Figure 3-346 3-36 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 87: Exposure System

    Figure 3-347 4) Free the harness [3] from the guide [2]; then, remove the screw [4], and detach the reflecting plate [5]. Figure 3-348 3-37 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 88 2. Do not leave fingerprints on the sur- face of the scanning lamp. 3. If the surface of the scanning lamp is soiled, dry wipe it. Figure 3-349 3-38 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 89 (p. 11-42) and AE adjustment (p. 11-43). Scanning lamp (mirror mount moving in reverse) 45 (approx.) Figure 3-350 3-39 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 90 Make sure that the fuse is in contact with the reflecting plate. (front) Thermal fuse Figure 3-352 3-40 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 91 2) Disconnect the connector (J131) [1] from the DC controller PCB; remove the screw [2], and detach the thermistor unit [3]. Figure 3-353 3-41 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 93: Chapter 4 Image Formation System

    B. Transfer Charging Roller Bias ......4-8 Assembly ......4-25 E. Controlling the Developing/ C. Blank Exposure ....4-26 Separation Static Eliminator Bias ........4-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 95: I. Image Formation System

    AC constant voltage control, on/off control DC voltage level control Density control Developing DC bias control Blanking control Side blanking lamp Table 4-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 96 Drum cartridge Static eliminator Transfer roller Lamp regulator High-voltage block circuit block Q101 Microprocessor Q900 Microprocessor Composite power supply DC controller PCB Figure 4-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 97: Timing Chart For The Image Formation System

    Developing DC bias Transfer bias Transfer cleaning bias Transfer reference 0.6sec.(approx.) bias (ATVC) 3200V Static eliminator bias Pre-registration roller paper sensor (Q751) Figure 4-102 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 98: Controlling The Primary

    Reference: DC component: -400 V (non-image area)/-625 V (image area) AC component: 2000 Vpp to 3000 Vpp (885µA) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 99 Photosensitive drum Amplifier Microprocessor (Q900) Composite power supply PCB Serial communication Microprocessor (Q101) DC controller PCB Figure 4-103 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 100 The DC bias control signal varies its pulse duty ratio while the AC bias output signal varies its amplitude to change the level of the DC/AC bias. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 101 STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanning lamp (LA1) -400V -625V Primary DC bias Primary AC bias Figure 4-104 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 102: Controlling The Transfer Roller Bias

    Transfer high-voltage transformer Transfer DC bias ON signal T_FW_ON High-voltage transformer control signal CLK32K DC controller PCB Composite power supply PCB Figure 4-105 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 103 Reference: The level of transfer bias applied to the transfer roller during a copying run is between -7.5 and -3.0 kV. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 104 SCFW SCRV LSTR STBY Main motor (M1) 1.6sec(approx.) 1.2sec (approx.) 0.7sec (approx.) Cleaning bias 0.8sec (approx.) Reference bias (ATVC) Transfer bias Figure 4-106 4-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 105: Controlling The Developing/Separation Static Eliminator Bias

    Reference : Developing DC bias : -80 ~ -550V Developing AC bias : 1200Vpp ± 10% 4-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 106 Microprocessor (Q900) Composite power supply PCB Serial communication Microprocessor (Q101) Density correction switch (SW101) DC controller PCB AE sensor Control panel Figure 4-107 4-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 107 (ACBIAS) so that an AC bias is applied to the developing cylinder. The AC bias is modified/rectified and then supplied to the static eliminator (static eliminator bias, about 3.2 kV). 4-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 108 Figures 4-109 through -112 show the changes in the DC bias occurring as a result of changes in the output of the AE sensor during auto density correction and how the density adjusting lever is set during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 109 -500 -500 Developing bias Developing bias DC component (V) DC component (V) Manual Density Mode AE Mode Figure 4-111 (Non-SW101) Figure 4-112 (Non-SW101) 4-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 110: Measuring The Density Of Originals

    +24V AEREF +24V (Q900) AE sensor Developing +24V DCON signal Serial communi- cation VR102 Composite power DC controller PCB supply PCB Figure 4-113 4-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 111 SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanner / lens drive motor (M2) Scanning lamp (LA1) AE signal (AE) Figure 4-115 4-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 112 1) Short JP103 and JP104 on the DC controller PCB with a screwdriver or the like. J104 J103 Figure 4-116 4-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 113 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’. VR102 Figure 4-118 4-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 114 • If it is foggy or the characters are too light, go back to step 1) and start over. • If no change is noted after re-adjustment, use the density correcting switch (SW101). Lighter Darker SW101 Figure 4-120 4-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 115: Controlling The Side Blanking Mechanism

    A: Position of the side blanking lamp in Direct and Reduce mode B: Position of the side blanking lamp in Reduce mode Figure 4-122 4-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 116: Disassembly/Assembly

    6. As a rule, do not operate the machine with any of its part removed. 7. A few of the screws used are special screws (with wider thread intervals). Do not use any screws indiscriminately. 4-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 117: Cartridge

    As in the case of the drum cover shutter, the light-blocking shutter is provided to protect the photosensitive drum from light. 4-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 118 5 min in a dark place, it will recover to a level at which it will cause no practical problem. However, avoid exposing it to direct sunlight. The rays of the sun are usually about 10000 to 30000 lux. 4-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 119: Transfer Charging Assembly

    [3]. Caution: Do not touch the surface of the roller. Be sure the surface is free of dirt. Figure 4-202 4-25 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 120: Blank Exposure

    5) Remove the composite power supply PCB. (See Chapter 7.III.E.2.“Removing the Composite Power Supply PCB.”) 6) Remove the two screws [1]. Figure 4-203 4-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 121 PCBs are at the ex- treme ends and that the lens is positioned at the farthest left (141% position). Lamp PCBs Figure 4-206 4-27 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 123 C. Controlling the Movement of E. Registration Roller Paper ........5-9 Assembly ......5-34 D. Detecting Jams ....5-12 Delivery Assembly ....5-36 DISASSEMBLY/ASSEMBLY ..5-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 125: Chapter 5 Pick-Up/Feeding System

    The machine is equipped with four sensors used to monitor the movement of copy paper. Notation Name Remarks Delivery sensor Vertical path roller paper sensor Single-feeder paper sensor Single-feeder model only Q751 Pre-registration roller paper sensor Table 5-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 126 Registration roller Delivery roller Q751 Static Vertical Cassette Copy tray Fixing assembly eliminator pickup roller path roller Cassette Holding plate Figure 5-102 (Single-feeder type) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 127: Controlling The Pickup Roller

    Cassette pickup rollers Pickup clutch Copy paper Figure 5-103 (Multifeeder type) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 128 Cassette pickup rollers Pickup clutch Copy paper Figure 5-104 (Single-feeder type) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 129 II : The cassette pickup solenoid (SL5) turns on once again about 1.3 sec after the pickup clutch solenoid (SL1) turns on. Figure 5-105 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 130 Paper guide plate Toothless section The cam gear makes a 180˚ turn (approximate), causing the paper guide plate to move up and down. Figure 5-106 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 131 DC controller PCB Single-feeder paper sensor Copy paper Single-feeder Pickup roller Pickup clutch Figure 5-107 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 132 (Q751) I: A switch to 9-cpm copying mode is made after delivering the 19th copy in a continuous copying job. Figure 5-108 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 133: Controlling The Movement Of Paper

    Control ring Paper detecting lever Copy paper Claw Pre- registration roller paper sensor (Q751) Pre-registration roller paper detection signal (RPD) DC controller PCB Figure 5-109 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 134 0.3sec (approx) Single-feeder paper sensor (PS5) Pre-registration roller paper sensor (Q751) Registration clutch solenoid (SL2) Delivery sensor (PS3) Forward Reverse Scanner Figure 5-111 5-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 135 11 (mm) : distance between pre-registration roller paper sensor and registration roller. 10 (mm) : length of actuator of the pre-registration roller paper sensor. Figure 5-112 5-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 136: Detecting Jams

    Single-feeder pickup roller Photosensitive drum Delivery roller Registration roller Q751 Vertical Cassette pickup Fixing assembly path roller roller Cassette Figure 5-114 (Single-feeder type) 5-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 137 SCFW Pickup clutch solenoid (SL1) 2.6sec Jam check Pre-registration roller paper No paper sensor (Q751) 1.5sec Main motor (M1) Figure 5-116 (no paper) 5-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 138 Cassette pickup solenoid (SL5) 1.2sec 1.2sec 1.2sec Jam check Vertical path roller Normal No paper paper sensor (PS4) 1.5sec Main motor (M1) Figure 5-118 5-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 139 SCFW SCRV Cassette pickup solenoid (SL5) 0.5sec 0.5sec Jam check Vertical path roller Normal paper sensor (PS4) 1.5sec Main motor (M1) Figure 5-120 5-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 140 SCFW SCRV SCFW Registration clutch solenoid (SL2) 4.6sec 4.6sec Jam check Pre-registration roller Normal paper sensor (Q751) 1.5sec Main motor (M1) Figure 5-122 5-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 141: Delivery Delay Jam

    Jam indicator. indication SCFW SCRV SCFW SCRV SCFW 4.1sec 4.1sec Jam check Normal Delivery sensor (PS3) 1.5sec Main motor (M1) Figure 5-124 5-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 142: Disassembly/Assembly

    6. As a rule, do not operate the machine with any of its part removed. 7. A few of the screws used are special screws (with wider thread intervals). Do not use any screws indiscriminately. 5-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 143: Pickup Assembly

    Figure 5-201 4) Remove the screw [1], and free the two claws [2]; then, detach the feeding assem- bly cover [3]. Figure 5-202 5-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 144 [8] in the direction of the arrow so that the pickup roller [9] is oriented as shown. Figure 5-204 5-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 145 3) Mount the multifeeder; then, make a Figure 5-206 copy using the multifeeder. 5-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 146 (about 30 mm in diameter). Figure 5-207 4) Disconnect the connector [1], and remove the screw [2]; then, detach the solenoid unit [3]. Figure 5-208 5-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 147 [8]. Figure 5-210 [11] 7) Remove the E-ring [9] and the washer [10], and detach the pickup clutch [11]. [10] Figure 5-211 5-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 148 (about 30 mm in diameter). Figure 5-212 4) Disconnect the two connectors [1], and remove the two screws [2] then, detach the solenoid unit [3]. Figure 5-213 5-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 149 5) While freeing the two claws [4], remove the pickup clutch unit [5]. Figure 5-214 6) Remove the E-ring [6], and detach the pickup clutch [7]. Figure 5-215 5-25 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 150 Figure 5-216 3) Remove the screw [1], and free the two claws [2]; then, detach the feeding assem- bly cover [3]. Figure 5-217 5-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 151 CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) While lifting the sensor lever [4], remove the vertical path roller [5]. Figure 5-218 5-27 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 152: Multifeeder Assembly

    3) Mount the multifeeder unit; then, Figure 5-220 make a copy using the multifeeder. 5-28 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 153 3) Remove the multifeeder pickup roller unit [4]. Figure 5-222 4) While freeing the claw [5], detach the multifeeder pickup roller [6]. Figure 5-223 5-29 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 154: Removing The Separation Pad

    Figure 5-224 4) Push up the separation pad [4], and pull it out by pushing the shaft [5] toward the in- side. Figure 5-225 5-30 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 155: Single-Feeder Assembly

    Figure 5-227 3) Remove the single-feeder pickup roller assembly [4] together with the paper guide plate [3]. Figure 5-228 5-31 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 156 CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) Free the claw [5] of the paper guide plate [3], and remove the single-feeder pickup roller [6]. Figure 5-229 5-32 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 157: Feeding Assembly

    [2]. Figure 5-230 3) While freeing the claw [3], detach the four shafts [4]; then, detach the feed belt [5]. Figure 5-231 5-33 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 158: Registration Roller Assembly

    2) Remove the spring [1] (front, rear). Figure 5-232 3) Remove the two bushings [2] and remove the registration roller lower unit [3]. Figure 5-233 5-34 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 159 4) Remove the E-ring [5], and detach the registration roller clutch [6]. Caution: The clutch has a pin. Take care not to lose it when removing the clutch. Figure 5-236 5-35 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 160: Delivery Assembly

    [2] and the four gears [3]. Figure 5-237 3) Remove the screw [4], and free the two hooks [5]; then, detach the sensor holder [6]. Figure 5-238 5-36 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 161 4) Remove the two bushings [7]. Figure 5-239 5) While shifting the delivery lower guide [8] toward the rear, detach the delivery roller [9]. Figure 5-240 5-37 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 163: B. Controlling The Fixing Temperature

    It also shows how these units may be disassembled/assembled and adjusted. OPERATIONS ......6-1 DISASSEMBLY/ASSEMBLY ..6-10 A. Outline ........6-1 A. Fixing Assembly ....6-11 B. Controlling the Fixing Temperature ......6-3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 165: Chapter 6 Fixing System

    The fixing temperature fails to increase. E001 The thermistor has detected overheating. E002 Fault in fixing power control. E003 The fixing temperature has dropped abnormally. Table 6-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 166 Fixing film Fixing thermistor (TH1) Thermal fuse 2 (FU2) Fixing heater (H1) Main motor Fixing lower roller Cleaning roller Composite power supply PCB Figure 6-102 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 167: Temperature

    Fixing heater duty signal Fixing heater HEAT_TRG Fixing heater drive signal E0_DT E0 detection signal Composite power supply PCB DC controller PCB Figure 6-103 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 168 TH1) and the temperatures to which the fixing heater is controlled ac- cording to the number of copies made in continuous mode. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 169 Temperature of the Fixing Heater ( C) Number of Copies in Continuous Copying Mode after a Press on the Copy Start Key Figure 6-104 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 170 The best level is selected at the factory when the fixing assembly is assembled. Do not change the combination of jumper wires. Figure 6-106 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 171 LSTR STBY Main motor (M1) Registration clutch solenoid (SL2) Heater OFF Delivery sensor (PS3) Heater ON Fixing heater (H1) Forward Reverse Scanner Figure 6-107 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 172 10 to 14 sec during copying operation. E003 The temperature detected by the thermistor (TH1) is 160°C and then 150°C or lower during copying operation. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 173 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. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 174 6. As a rule, do not operate the machine with any of its part removed. 7. A few of the screws used are special screws (with wider thread intervals). Do not use any screws indiscriminately. 6-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 175: Fixing Assembly

    Front Lower Cover.”) 2) Remove the screw [1], and free the two hooks [2]; then, detach the power supply cover [3]. Figure 6-202 6-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 176 4) Remove the two screws [6], and discon- nect the connector [7]; then, detach the fixing assembly [8] by turning it in the di- rection of the arrow. Figure 6-204 6-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 177 [5]. Caution: Do not disassemble the fixing film and the fixing heater. They cannot be re- placed on their own. Figure 6-206 6-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 178 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 6-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 179 C. Detecting an Error on Assembly ......7-17 the Composite Power Supply E. Electrical System ....7-21 PCB ........7-6 D. Protecting the Power Supply Circuit ........7-6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 181: Chapter 7 Externals/Auxiliary Mechanisms

    The heat exhaust fan is driven directly by the main motor (M1; through a belt and a gear), and is designed to rotate at all times while the main motor is rotating. Heat exhausting fan Figure 7-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 182 Heat exhausting fan Forward Reverse Scanner I: If 6-cpm copying speed control is executed starting with the first copy, the fan will rotate. Figure 7-102 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 183: Power Supply System

    T101 circuit Scanning lamp Scanning lamp control circuit Primary charging High- roller voltage power supply Developing roller circuit Transfer roller Static eliminator Figure 7-201 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 184: Power Supply Circuit

    • During copying, +24 V ±5% • During standby, +18 V ±10% However, the above assume that the deviations in AC input are -15%, +10%. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 185 FU102 Main supply +24VU transfor- Auxiliary power T101 supply Microprocessor Power (Q900) switch SW309 C123 Control panel DC controller PCB Power supply Figure 7-202 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 186: Detecting An Error On The Composite Power Supply Pcb

    If the output has stopped, it may be reset by opening the machine’s top unit, correcting the load, and then turning the power switch back on. Keep in mind, however, that repeated short-circuiting and resetting can blow the fuse (FU102). COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 187: Disassembly/Assembly

    6. As a rule, do not operate the machine with any of its part removed. 7. A few of the screws used are special screws (with wider thread intervals). Do not use any screws indiscriminately. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 188: External Covers

    [1] Copyboard cover [5] Cassette [2] Top cover [6] Front upper cover [3] Control panel [7] Left cover [4] Front lower cover Figure 7-301 (Copyboard type) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 189 [1] Rear cover [2] Right door [3] Multifeeder unit Figure 7-303 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 190 DC control- ler. Figure 7-304 4) Free the two claws [3], and slide the left cover [4] to detach. Figure 7-305 7-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 191 [6]; then, detach the rear cover [7]. Figure 7-306 6) Remove the screw [8], and detach the copyboard cover foot retainer [9]. Figure 7-307 7-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 192 CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 7) Free the two claw [10]; then lift the top cover [11] to detach. [10] [10] [11] Figure 7-308 7-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 193 A flexible cable for the control panel is connected to the front upper cover. Dis- connect the cable from the DC control- ler. Figure 7-310 7-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 194 3) Mount the multifeeder, and make one copy using it as the source of paper. Figure 7-313 7-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 195: Control Panel

    [6]; then, detach the control panel [7]. Move to the right Lighter Darker Auto Exposure Manual Exposure Photo Timer Saver Figure 7-315 7-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 196: Copyboard Glass

    When mounting the copyboard glass, be sure that the grounding plate is on the side of its top edge. (ADF type only) Grounding plate Figure 7-317 7-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 197: Assembly

    Power Supply PCB.”) 3) Remove the screw [1], and detach the high-voltage PCB [2]. Figure 7-318 4) Remove the insulating sheet [3]. Figure 7-319 7-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 198 When installing the main motor unit, be sure to attach the fan belt. After attaching the fan belt, make sure that the belt is free of twists. Figure 7-321 7-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 199 Power Supply PCB.”) 3) Remove the screw [1], and detach the high-voltage PCB [2]. Figure 7-322 4) Remove the insulating sheet [3]. Figure 7-323 7-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 200 After attaching the fan belt, make sure that the belt is free of twists. Figure 7-325 7-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 201: Electrical System

    3) Disconnect all connectors from the DC controller PCB, remove the screw [3], and free the six claws [4]; then, detach the DC controller PCB [5]. Figure 7-327 7-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 202 4) Disconnect the ten connectors [3] from the composite power supply PCB, and disconnect the connector [4] from the main motor assembly. Figure 7-329 7-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 203 CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 5) Remove the seven screws [5], and free the five claws [6]; then, detach the composite power supply PCB [7]. Figure 7-330 7-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 204 In particular, keep in mind that holding the area indicated by “ ” can cause deformation or cracking of the board. Figure 7-331 7-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 205: Adf

    Delivery ......8-12 C. Drive System ...... 8-23 G. Controlling the Pickup D. Feeding System ....8-26 Motor ........8-14 E. Electrical System ....8-33 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 207: 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. Original tray Copier Figure 8-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 208: B Basic Construction

    IC for communications.) [Input block] [Control block] [Output block] ADFcontroller PCB Sensor Motor (Q1) Switch (Q2) 24V 5V Serial communication Composite power supply Copier Figure 8-102 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 209 (when light-blocking plate is at sensor) Belt motor J3-1 See p. 8-15. Pickup motor J3-6 See p. 8-14. J114 J202 Serial communication Copier *Negative logic. Figure 8-103 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 210: Basic Operations

    Further, the ADF is equipped with three sensors for monitoring the movement of originals. The ADF is designed to accommodate one-sided original copying mode only. ADF controller PCB One-way clutch Figure 8-104 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 211 Delivery tray Originals Original tray Placing originals Picking up an original Feeding 1 Feeding 2 Copying Delivering Figure 8-105 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 212: Detecting An Original

    (PDP3) to the ADF controller PCB in response to the movement of the detecting lever away from the sensor. Original Original tray Detecting lever ADF controller PCB Figure 8-106 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 213 Original tray ADF controller PCB Figure 8-107 Original Lengths and Operation Sequences Length Sequence ~313cm For A4/LTR originals 314cm~ For LGL originals Table 8-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 214: Pickup Operation

    (topmost) and forward it as far as the registration roller. (The separation pad ensures that only one original is picked up.) Pickup roller 1 Pickup roller 2 1st original Separation pad Registration roller Figure 8-109 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 215 At the same time, the pickup motor (M2) is rotated counterclockwise to prepare for picking up the second original. Delivery sensor Feeding belt 1st original Figure 8-111 2nd original Original tray Paper guide Figure 8-112 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 216 If the original is LGL, the second original is picked up after the scanner has been moved for- ward. 1st original 2nd original Scanner Figure 8-114 8-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 217 Pickup motor (M2) Belt motor (M1) Original detection sensor (PI3) Registration sensor (PI2) Feeding 15mm farther Delivery sensor (PI1) : motor CCW rotation Figure 8-116 8-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 218: Delivery

    The ADF switches the belt motor to low speed as soon as the trailing edge of the original moves past the delivery sensor (PI1), thereby delivering the original slowly. 1st original Delivery tray Delivery sensor 2nd original Figure 8-118 8-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 219 Registration sensor (PI2) Feeding farther 15mm Feeding farther 15mm Feeding farther 15mm Delivery sensor (PI1) : motor CCW rotation : motor low-speed rotation Figure 8-120 8-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 220: Motor

    Pickup roller signal (PM0) signal (PM1) rotation ‘1’ ‘1’ Braked ‘1’ ‘0’ Picking up ‘0’ ‘1’ Delivering ‘0’ ‘0’ At reset (free) Table 8-102 8-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 221: Controlling The Belt Motor

    Jam indicator on the controller and stop the belt motor at the same time. ADF controller PCB +24V Belt motor Motor driver Figure 8-122 8-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 222: I. Detecting Original Jams

    During pickup, the delivery sensor (PI1) re- mains on even when the original is fed for ‘length + about 60 mm’. Table 8-103 8-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 223: Power Supply

    Delivery sensor (PI1) supply Fuse resistor (R1) Registration sensor (PI2) J1-3 J101-3 Logic Original placement sensor (PI3) ADF controller PCB Copier Figure 8-124 8-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 224: Disassembly/Assembly

    6. As a rule, do not operate the machine with any of its part removed. 7. A few of the screws used are special screws (with wider thread intervals). Do not use any screws indiscriminately. 8-18 COPYRIGHT © 1999 CANON INC. CANON PC800S/900S REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 225: A. Removing The Adf

    [5]. Figure 8-202 4) Close the machine’s top unit. 5) Remove the two screws [6], and remove the fixing plate [7]. Figure 8-203 8-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 226 [9]; then, remove the cable bush [10]. Figure 8-204 7) Remove the two lockpin [11], and remove the ADF from the copier. [11] [11] Figure 8-205 8-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 227: External Covers

    1) Remove the ADF from the copier. (See “A. Removing the ADF.”) 2) Remove the feeding roller [1] from the bushing [2]. Figure 8-207 8-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 228 [4] from the upper cover [5]. Figure 8-208 4) Disconnect the connector [6], and remove the lower cover [4]. Figure 8-209 8-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 229: Drive System

    2) Remove the screw [1] and the bushing [2]; then, remove the pickup roller cover [3]. Figure 8-210 3) Remove the E-ring [4], and remove the bearing [5]. Figure 8-211 8-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 230 5) Remove the five screws [9], and remove the right hinge unit [8]. Figure 8-213 6) Remove the stop ring [10] (resin) and the [11] bushing [11]. [10] Figure 8-214 8-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 231 7) Disconnect the two connectors [12], and remove the five screws [13]; then, remove the drive unit [14]. [13] [14] [13] [12] Figure 8-215 8-25 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 232: Feeding System

    2) Remove the E-ring [2], and remove the shaft [3]; then, detach the pickup roller 1 [4]. Figure 8-217 3) Remove the stop ring [5]. Figure 8-218 8-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 233 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 8-27 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 234 3) While pushing the bushing [3] in the di- rection of the arrow, pull out the registra- tion roller shaft [2] slowly. Figure 8-221 8-28 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 235 4) Remove the timing belt [4], and remove the feeding belt drive roller [5] by moving it in the direction of the arrow. Figure 8-224 8-29 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 236 [8]. Figure 8-226 7) Remove the stop ring [10] (made of resin); then, remove the bushing [11]. [10] [11] Figure 8-227 8-30 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 237 10) Remove the two E-rings [17]; then, re- [20] [17] move the timing belt [18], gear [19], and two bushings [20]. [20] [19] [17] [18] Figure 8-230 8-31 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 238 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]. [23] [21] [22] Figure 8-231 8-32 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 239: Electrical System

    Sensor Cable color Original placement sensor Purple Registration paper sensor Yellow Table 8-201 Registration paper sensor Figure 8-233 8-33 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 241 INSTALLATION SELECTING A SITE ....9-1 B. Placing Copy Paper....9-9 UNPACKING AND III. MOVING THE MACHINE ..9-12 INSTALLATION ......9-2 A. Unpacking and Installation ..9-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 243: Chapter 9 Installation

    • The machine must be at least 10 cm/3.9 in. away from any wall, and there must be adequate space for work involving the machine. 10cm min. 10cm min. Figure 9-101 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 244: Unpacking And Installation

    Shipping attachment [1] You will be storing the shipping attachment [1] inside the machine in step 9. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 245 Attach the manual feed tray that comes with the machine. (Multifeeder type only) Caution: This applies only if the manual feed tray comes packaged with the machine. Manual feed tray COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 246 Caution: If the protective member is not found on the machine, go to the next step. Protective member COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 247 Hold the tab of the cartridge, and take it out of the machine. Holding the cartridge with the warning label facing up, shake it several times in both direc- tions (90°). COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 248 Open the original tray. Caution: This step applies to the ADF type only. Original tray COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 249 • Check to make sure that a press on the Zoom Mode key turns on the ‘0’ indication and a press on the Count/Zoom Set key will indicate the correct ratio. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 250 • Check to make sure that as many copies as specified are made correctly. Clean the externals of the machine and the area around the machine. COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 251: B. Placing Copy Paper

    Side paper guide plate (front) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 252 English. If you need to replace it with a non- English label, select the appropriate one from among those packaged with the machine, and attach it. Language label for cassette 9-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 253 Rear end guide plate Place copy paper in the cassette; then, set the cassette in the machine. • 500-sheet cassette • 250-sheet cassette 9-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 254: Iii. Moving The Machine

    Detach the copy tray. Press down on the marking on the machine's top unit to fully close the machine. 9-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 255 Pack the machine, using the original packing material and box. Or tape the machine’s top in place so that it will not open while in transit. 9-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 257: I. Periodically Replaced Parts

    CONSUMABLES ...... 10-1 Cartridge with the Packaging III. SCHEDULED SERVICING ..10-1 Seal Removed ....10-3 IV. STORING AND HANDLING THE CARTRIDGE ..... 10-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 258: Chapter 10 Maintenance And Servicing

    The machine does not have items designated as durables or consumables. III. SCHEDULED SERVICING The machine does not have any parts which require scheduled servicing. 10-1 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 259: Storing And Handling The Cartridge

    (hPa; 0.6 to 1 atm) Table 10-401 Temperature/Humidity Conditions for Storage Temperature Humidity between -20°C/-4°F and 40°C/104°F 90% or less Table 10-402 Conditions for Transportation 10-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 260: Storing And Handling The Cartridge With The Packaging Seal Removed

    Avoid areas subject to dust, ammonium gas, or organic solvent. d. Make sure that the cartridge is stored at 40°C/104°F or lower. 10-3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 261: Handling The Cartridge

    Figure 10-401 b. Do not place the cartridge on its end or turn it over as shown in Figure 10-402. Figure 10-402 10-4 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 262 5 min, it should recover so that it will not cause practical prob- lems. Nevertheless, avoid direct sunshine. (The rays of the sun is as strong as 10000 and 30000 lux.) 10-5 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 264 Variable Resistors (VR) and C. Troubleshooting Image Check Pins by PCB ..11-84 Faults ........ 11-53 VII. SELF DIAGNOSIS ....11-86 IV. TROUBLESHOOTING MALFUNCTIONS ....11-61 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 266: Chapter 11 Troubleshooting

    • If you want to find out the checks to make or action to take, go through the steps: answer the questions under “Checks”; if yes, take the action shown. Otherwise, go to the next step and make the indicated checks. 11-1 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 267 “-,” the negative probe. example: J109-1 (+) ..Connect the positive probe. J109-2 (-) ..Connect the negative probe. 11-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 268: Maintenance And Inspection

    3. Density of gray scale No. 1 (good or bad; Note 2) procedure.) 4. Fogging of background (Note 2) troubleshooting procedure. 3. See p. 11-42. 11-3 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 269: Points To Note For Servicing

    Special brush Cleaning. Pickup roller Cloth moistened with Cleaning. Feed belt Moist cloth Cleaning. water* or alcohol *Be sure to wring it well. 11-4 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 270: Standards And Adjustments

    J109 Figure 11-202 Turing VR105 and Leading Edge Non-Image Width Direction of VR105 Leading edge non-image width Clockwise Decreases Counterclockwise Increases Table 11-201 11-5 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 271 J109 Figure 11-204 Turing VR104 and Image Leading Edge Margin Direction of VR104 Image leading edge margin Clockwise Increases Counterclockwise Decreases Table 11-202 11-6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 272 3) Loosen the screws used to secure the cable retainer at the rear and the front of the No. 1 mirror mount [1]. Figure 11-206 11-7 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 273 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) 11-8 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 274 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) 11-9 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 275 970 ±150 g when the holding plate is 18 mm away from the bottom of the cassette. Spring gauge (CK-0054) Holding plate Cassette Cassette spring Figure 11-211 11-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 276 CHAPTER 11 TROUBLESHOOTING e-1. Routing the Scanner Drive Cable Wind 1.5 times. (black cable) Wind 7.5 times. (silver- colored cable) Figure 11-212 11-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 277 3) Remove the copyboard glass. (See Chapter 7.III.C.1.“Removing the Copyboard Glass.”) 4) Disconnect the connectors (J101, J131) [1] from the DC controller PCB. Figure 11-214 11-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 278 [3] from the left upper stay [4]. Figure 11-215 6) Remove the three screws [5], and detach the left upper stay [4]. Figure 11-216 11-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 279 CHAPTER 11 TROUBLESHOOTING 7) Remove the four screws [7], and detach the lens cover [8]. Figure 11-217 11-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 280 [3]. Longer end Shorter end Face with a marking Figure 11-218 Top view Figure 11-219 11-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 281 When putting the cable drive pulley into the shaft, be sure that the hook is at the front. Hook (front) Figure 11-220 3) Hook the shorter end [6] on the pulley [7]. Figure 11-221 11-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 282 Be sure that the secured end of the cable is found where the hole in the left side plate and the tip of the cable matches. [13] [12] Figure 11-223 11-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 283 [16] on the left front side and the pulley [17] of the No. 2/3 mirror mount. [17] [16] [14] Figure 11-225 11-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 284 Be sure that the secured end of the cable is found where the hole in the left side plate and the tip of the cable matches. [18] [19] [14] Figure 11-226 11-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 285 2) Lead the longer end [5] along the cable drive pulley [1] as shown, and hook it on the pulley [6] on the right front side. Figure 11-228 11-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 286 2/3 mirror mount, and lead it between the No. 1 mirror mount [7] and the scanning lamp [9]. Figure 11-229 4) Hook the end of the longer end [5] on the hole [10] on the right side. [10] Figure 11-230 11-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 287 No. 2/3 mirror mount as shown; then, lead it between the No. 1 mirror mount [7] and the scanning lamp [9]. [12] Figure 11-232 11-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 288 8) Free the shorter end [3] and the longer end [5] (reversing cable), and connect both with a spring [14]; then, fit the stopper [15]. [14] [15] Figure 11-234 11-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 289 CHAPTER 11 TROUBLESHOOTING 9) Detach the pulley clip [16] from the cable drive pulley [1]. [16] Figure 11-235 11-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 290 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) 11-25 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 291 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) 11-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 292 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) 11-27 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 293 • If you have replaced the scanning lamp, you must adjust the intensity of the lamp (p. 11-42) and perform AE adjustment. • Do not touch the lamp when handling it. 11-28 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 294 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. Reflecting plate (front) Thermal fuse Figure 11-243 11-29 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 295: Adf

    A4/LTR copy papper Figure 11-244 2) Turn on the machine, and place the test sheet prepared in step 1) on the original tray. Figure 11-245 11-30 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 296 Relationship between Adjusting Screw and L1/L2 Direction of turn Relationship between L1 and L2 Clockwise L1 > L2 Counterclockwise L1 < L2 Table 11-203 11-31 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 297 • The sheet will be used as a test sheet. 10mm A4/LTR copy papper Figure 11-248 2) Remove the original tray cover from below the original tray. Original tray cover Figure 11-249 11-32 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 298 5) Check to make sure that the distance L3 on the copy image indicated is 10 ±2.5 mm (standard) or less. Copy image L3=10 ± 2.5mm Figure 11-251 11-33 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 299 Pinion gear Pinion gear positioning screw Figure 11-252 Relationship between Pinion Gear Position and L3 Direction of pinion gear Increases Decreases Table 11-204 11-34 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 300 • The sheet will be used as a test sheet. 10mm A4/LTR copy papper Figure 11-253 2) Remove the screw, and remove the ADF controller cover. Screw ADF controller cover Figure 11-254 11-35 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 301 5) Check to make sure that the distance L4 on the copy image indicated is 10 +2.0, -2.5 mm (standard) or less. Copy image L4=10 ± 2.0mm Figure 11-256 11-36 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 302 7) Press the push switch (PSW) on the ADF controller PCB. • The copy paper will be picked up from the original tray and stopped on the copyboard glass. Figure 11-258 11-37 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 303 Relationship between Rotary Switch Direction and Original Position Direction of rotary switch Position (shift) of original Clockwise Toward leading edge Counterclockwise Toward trailing edge Table 11-205 11-38 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 304 (PSW) to pick up the copy paper. Figure 11-260 3) Turn the rotary switch (SW2) on the ADF controller PCB clockwise by 10 notches. Figure 11-261 11-39 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 305 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 11-40 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 306: Electrical

    Sheet; if (and only if) an image fault is found, adjust the intensity of the scanning lamp and execute AE adjustment. Table 11-206 11-41 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 307 J107 J103 J104 VR103VR102 J105 J109 Figure 11-264 VR107 and Copy Density Direction of VR107 Copy density Clockwise Lighter Counterclockwise Darker Table 11-207 11-42 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 308 2) While keeping the condition in step 1), turn on the power. • The scanning lamp will turn on, and the main motor (M1) will rotate. 3) Stop shorting JP103 and JP104. 11-43 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 309 8) Turn VR103 on the DC controller PCB so that the display will indicate ‘52’ to ‘5c’. J130 J114 J102 VR104 VR105 VR106 VR107 J106 J103 J107 J104 VR103VR102 J105 J109 VR103 Figure 11-268 11-44 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 310 • If the results of adjustment for a second time are not good, make adjustments using the den- sity correction switch (SW101). Lighter Darker SW101 Figure 11-269 11-45 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 311 2) After replacing the DC controller PCB, measure the voltage as in step 1); then, turn VR106 on the DC controller PCB so that the reading is the same as before replacement. 11-46 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 312: Checking The Photointerrupters

    Q751, paper sensor (RPD) hand. When the light- blocking plate is not at Q751, Table 11-208 11-47 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 313: Troubleshooting Image Faults

    Copy Paper a. Is copy paper of a type recommended by Canon? b. Is copy paper moist? Try paper fresh out of package. 11-48 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 314 You may continue to use the cartridge, but the user must know that it must be replaced with a new cartridge soon. • If the copies are not normal, Replace the new cartridge. 11-49 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 315 Instruct the user so that the cartridge is not opened before it has become used to the room temperature (one to two hours). 11-50 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 316 CHAPTER 11 TROUBLESHOOTING 11-51 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 317 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. 11-52 11-6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 318: Troubleshooting Image Faults

    Replace the cartridge. Is the problem End. Developing corrected? Replace the electric unit bias, Develop- (composite power supply ing bias PCB, DC controller terminal PCB). 11-53 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 319 Scanning 1. Check the activation lamp, Devel- of the scanning oping bias lamp. 2. Check the develop- ing assembly. 11-54 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 320 Is there foreign matter or scratches in Remove the foreign charging the transfer charging roller assembly? matter, or replace the roller transfer charging roller. Cartridge Replace the cartridge. 11-55 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 321: The Back Of The Copy Is Soiled

    Is the feeding assembly soiled? Clean the feeding assembly assembly. Pickup guide Clean the pickup guide assembly, assembly and the Delivery delivery roller. roller 11-56 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 322: The Copy Has A Fixing Fault

    Try a recommended type. If the results are good, ask the user to use a recommended type. Registration Check the registration clutch clutch. 11-57 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 323: The Copy Has A Blurred Image

    Check the scanning system against one made in Direct. Is the system. Feeding problem found at different positions? Check the feeding system system. 11-58 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 324: The Copy Is Blank

    PCB). Primary 1. Check the contacts high-voltage for electrical conti- charging nuity. terminal, 2. Replace the car- cartridge tridge 11-59 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 325: The Copy Is Solid Black

    Action --------------- Does the scanning lamp remain on See “The scanning during copying? lamp fails to turn on.” Is the cartridge set correctly? 11-60 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 326: Troubleshooting Malfunctions

    1), turn on the power switch. 3) Is an error code indicated in re- sponse to a press on the Copy Start key? 11-61 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 327 End. power PCB. Is the problem corrected? supply PCB DC control- Replace the DC ler PCB controller PCB. 1 1 - 6 2 11-62 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 328 Main motor Replace the main motor (M1). Is the End. (M1) problem corrected? DC control- Replace the DC ler PCB controller PCB. 11-63 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 329 PCB to PS1; (PS1) 11-47.) if normal, replace PS1. DC control- Replace the DC ler PCB controller PCB. 1 1 - 6 4 11-64 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 330 ‘E261’ occurs fre- frequency quently, advise the user to use a frequency stabilizer. Composite Replace the composite power power supply PCB. supply PCB 11-65 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 331: Malfunctions

    Replace the DC controller PCB. Is the End. ler PCB. problem corrected? Composite Replace the composite power power supply PCB. supply PCB 1 1 - 6 6 11-66 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 332 DC controller PCB. Control Replace the control panel PCB.Is the End. panel PCB problem corrected? Composite Replace the composite power power supply PCB. supply PCB 11-67 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 333 Composite 220/240V model: 250 V, 2.5 A Replace the composite power power supply PCB. supply PCB 1 1 - 6 8 11-68 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 334 Is the force of the cassette spring Replace the cassette spring within specification? (See p. 11-10.) spring. DC control- Replace the DC ler PCB controller PCB. 11-69 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 335 J113 to PS5 on the DC (PS5) control PCB; if nor- mal, replace PS5. DC control- Replace the DC ler PCB controller PCB. 1 1 - 7 0 11-70 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 336: The Scanner Fails To Move Forward

    24 V for a moment after the if normal, replace SL2. DC control- Copy Start key is pressed? Replace the DC ler PCB controller PCB. 11-71 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 337: The Scanning Lamp Fails To Turn On

    PCB controller PCB and the composite power supply PCB; if nor- mal, replace the composite power supply PCB. 1 1 - 7 2 11-72 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 338: The Fixing Heater Fails To Turn On

    DC control- Replace the DC controller PCB. Is the End. ler PCB problem corrected? Composite Replace the composite power power supply PCB. supply PCB 11-73 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 339 DC control- Replace the DC ler PCB controller PCB. 1 1 - 7 4 11-74 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 340: Troubleshooting Feeding Problems

    [1] Pickup block [2] Separation/feeding block [3] Fixing/delivery block The troubleshooting procedures that follow are organized according to the location of a jam. Figure 11-501 11-75 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 341: Pickup Assembly

    (PS4) Pickup Check the roller for roller, wear and deformation, Vertical path and the roll for attach- roller, Roll ment. 11-76 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 342 Does the delivery roller operate Check the delivery roller drive smoothly? roller drive assembly. assembly Leading Check the leading edge margin edge of copy paper for margin. 11-77 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 343: Faulty Feeding

    Fixing Is the inlet guide soiled with toner? Check the fixing assembly assembly. Inlet guide Clean the inlet guide with solvent. 11-78 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 344: Arrangement And Functions Of Electrical Parts

    Pre-registration roller paper detec- tion Solenoid Pickup clutch solenoid Registration clutch solenoid Lens solenoid Multifeeder pickup solenoid Multifeeder type only Cassette pickup solenoid 11-79 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 345: Switches

    CHAPTER 11 TROUBLESHOOTING Switches SW309 SW101 Figure 11-602 Symbol Name Notation Description Remarks Switch Door switch SW309 Power switch Switch SW101 Density correction switch 11-80 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 346: Lamp, Heater, Motor, Etc

    Fixing heater temperature detection Scanner temperature detection Thermal fuse Lamp overheating detection Fixing heater overheating detection Varistor Fixing film varistor Transfer guide varistor 11-81 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 347: Pcbs

    Detects paper in front of the registration roller. AE sensor PCB Detects the density of originals. Blanking PCB (front) Used for blanking exposure. Blanking PCB (rear) Used for blanking exposure. 11-82 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 348: Adf

    Delivery paper detection Registration roller paper detection Original placement detection Microswitch ADF open/close switch Motor Belt motor Pickup motor Controls sequence of operations ADF controller 11-83 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 349: Variable Resistors (Vr) And Check Pins By Pcb

    Figure 11-606 Composite Power Supply PCB J203 J204 J202 J207 J201 VR801 VR001 VR301 J910 J302 J209 FU102 J205 J213 J212 Figure 11-607 11-84 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 350 CHAPTER 11 TROUBLESHOOTING ADF Controller PCB FACE Soldered side PSW SW1 Figure 11-608 11-85 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 351: Self Diagnosis

    150°C or lower after it has reached • The DC controller PCB is faulty. 160°C. • The composite power supply PCB is faulty. 11-86 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 352 • During a copying run, the +24 V power • The composite power supply PCB is deviates from the control value by faulty. ±20%. 11-87 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 353 JP102 JP101 Figure 11-701 2) While keeping the condition in step 1), turn on the power switch. 3) Stop short-circuiting JP101 and JP102. 11-88 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 354: Appendix

    CIRCUIT DIAGRAM ....A-19 N. SPECIAL TOOLS ...... A-35 G. CONTROL PANEL CIRCUIT O. SOLVENTS/OILS ...... A-36 DIAGRAM ......... A-27 H. AE SENSOR CIRCUIT DIAGRAM ......... A-29 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 356: General Timing Chart

    Developing DC bias Transfer bias Static eliminator bias Fixing heater (H1) Scanner cooling fan (FM1) Delivery sensor (PS3) : Scanner / lens drive motor (reverse) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 357 Fixing heater (H1) Scanner cooling fan (FM1) Delivery sensor (PS3) : Scanner / lens drive motor (reverse) / Pickup motor (reverse) / Belt motor (reverse) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 358: B. Signals And Abbreviations

    SCANNER MOTOR DRIVE signal SCHP SCANNER HOME POSITION signal SFPD SINGLE-FEEDER PAPER DETECTION signal T_FEEDBACK TRANSFER BIAS VOLTAGE DETECTION signal T_FW_DRV TRANSFER DC BIAS CONTROL signal COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 359 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 360: C. General Circuit Diagram

    Lens home Single-feeder Cassette paper sensor solenoid solenoid clutch solenoid pickup solenoid position sensor paper sensor pickup solenoid (Multifeeder (Single-feeder type only) type only) COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 361 BR BROWN GY GRAY GN GREEN To composite power supply OR ORANGE +24V PK PINK SB SKY-BLUE VIOLET Y/GN WHITE YELLOW (M3) (M4) Switch COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 362: Dc Controller Circuit Diagram

    R219 DIGIT<4..0> C162 D201 DV_AC_ON* DV_DC_ON* PR_DC_ON* CPS_REQ* R301 Q149 SEG<7..0> KEY<7..0> KEY<7..0> C193 R300 R211 D203 Q183 R210 C157 D200 ADF type only COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 363 C107 C106 C166 C165 C164 C163 R227 R226 R225 R224 SC_INB* SC_INB SC_INA* SC_INA C263 C264 C265 C266 R111 R109 R107 R108 C109 C108 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 364 DC Controller Circuit Diagram (3/8) VR103 R121 C155 +24VR R265 +24VR C111 R119 R120 R266 R206 AEREF AE_DATA Q106 Q106 ZD101 C185 VR102 C184 R264 R118 C186 R263 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 365 DIG4 SEG<7..0> SEG0* Q113 R240 R243 R242 R241 R358 SEG1* Q114 SEG2* Q115 SEG3* Q116 SEG4* Q117 SEG5* Q118 SEG6* Q119 SEG7* Q120 A-10 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 366 ZER_CRS ZER_CRS_EDGE R154 C167 SW101 IN A (AB/inch type only) R149 Q107 D183 C181 OUT X Q131 D_L_1 C126 R275 C183 R143 R148 A-11 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 367 RETRY_PD_CPU R356 C250 C129 CPS_REQ CPS_REQ* Q134 PR_DC_ON RG_PD_CPU R170 PR_DC_ON* Q136 C128 R249 DV_DC_ON DV_DC_ON* Q135 DV_AC_ON DV_AC_ON* Q138 STBY/CPY* STBY/CPY Q140 A-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 368 D185 C176 M_TH HEAT_TRG Q148 – Q147 Q108 R190 R186 Q151 R212 R214 C160 HEAT_OFF Q160 R187 C161 D132 HEAT_PWM D133 – Q108 A-13 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 369 DIG4 J111 +24VU FB102 J132 TP102 J201 C252 DIG2 TP103 J201 J201 DIG3 J201 R351 R386 J132 TP101 J201 R365 J201 J132 J132 A-14 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 370: E. Adf Controller Circuit Diagram

    P15/A5 STBY* P16/A6 P17/A7 P40/TMCI0 P41/TMO0 P20/A8 P42/TMRI0 P21/A9 P43/TMCI1 P22/A10 P44/TMO1 P23/A11 P45/TMRI1 P24/A12 P46/PHI P25/A13 P47/E P26/A14 HC14 +24V ZD1 ADFC A-15 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 371 ADF Controller Circuit Diagram (2/3) +24V +24V OUTA OUT1 OUTA* OUT2 OUTA* VrefA INA* +24V OUTA OUTB* +24V VrefB INB* OUTB A-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 372 ADF Controller Circuit Diagram (3/3) PDP3 HC14 PDP2 HC14 PDP1 DIPSW1 HC14 DIPSW0 HC14 DIGIT0 HC14 DIGIT1 DIGIT2 HC14 DIGIT3 A-17 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 373 A-18 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 374 <A508> Q617 D810 C605 R801 <A508> AC_MONITOR C818 <A509> Q611 R603 Q608 C620 R609 Q621 HEAT_TRG R611 <A508> R614 R615 Q620 R602 C604 A-19 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 375: Composite Power Supply Circuit Diagram

    D106 MV_H <A505> <A504> <A509> MV_L <A505> AC_LA <NC=8> R109 R103 D121 D122 D124 R108 R110 D125 D123 Q118 T103 T104 PROTECT <A508> A-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 376 C103 C127 R125 R186 D119 C143 R136 MPWM_INV R185 <A508> R148 +24VR R156 D120 R147 Q115 C145 Q107 R160 C146 R155 R146 C144 A-21 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 377 R212 C539 C538 +24VR C561 R550 T508 R591 <A508> C513 R516 PRIMARY PAC_OUT JP140 J209 R521 +24VR C510 C512 R514 Q526 C509 C611 A-22 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 378 C221 R237 R238 ACBIAS <A508> HV_L <A503> R236 R207 D214 BIAS_PWM R208 <A508> Q206 R239 C218 C219 C208 R243 BIAS_S <A508> D215 C215 A-23 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 379 R351 R352 R353 R354 R355 R356 HV_H T_REV T101 C343 C321 C380 C382 D326 HV_L C344 D325 <A503> T_REV_R R388 T_REV_ON* Q321 <A508> A-24 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 380 HEAT_TRG <A502> T_REV_ON* S_IN <A507> T_FW_DRV S_OUT MLOCK T_FW_DRV S_OUT <A507> T_FW_S S_CLK T_FW_S S_CLK Q900 JP999 : 220 / 240V model only A-25 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 381 R016 R025 D010 L001 R001 D009 Q001 LAMP_DETECT D011 <A508> Q011 D008 C005 R012, R013, R018, R021 : 220 / 240V model only A-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 382: Control Panel Circuit Diagram

    SEG4 R305 J301 R306 10 SEG5 J301 SW309 PWOFF 2 J303 R307 11 SEG6 J301 J302 J301 POWER R308 12 SEG7 J302 J301 J303 A-27 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 384: Ae Sensor Circuit Diagram

    H. AE SENSOR CIRCUIT DIAGRAM +24VR R601 R603 J601-1 C603 R606 C601 +24VR J601-2 R605 PD601 Q601 R602 +24VR Q601 J601-3 R604 C602 J601-4 A-29 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 385: Sensor Circuit Diagram

    APPENDIX I. SENSOR CIRCUIT DIAGRAM J751-2 Q751 J751-3 R751 J751-1 A-30 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 386: Noise Filter Circuit Diagram

    APPENDIX J. NOISE FILTER CIRCUIT DIAGRAM FU501 L501 AC_H JP502 J501-1 C503 R501 C501 C502 C504 AC_N JP501 J501-2 A-31 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 387: High Voltage Contact Circuit Diagram

    BP702 JP704 JP705 BP703 JP706 JP707 R701 BP704 JP708 JP709 R702 [PR_IN] BP705 JP710 JP711 [GND_IN] BP706 JP712 JP713 R703 [DV_IN] BP707 JP714 A-32 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 388: Blank Exposure (Front) Circuit Diagram

    APPENDIX L. BLANK EXPOSURE (front) CIRCUIT DIAGRAM LA601 J601 J601 A-33 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 389: Blank Exposure (Rear) Circuit Diagram

    APPENDIX M. BLANK EXPOSURE (rear) CIRCUIT DIAGRAM LA602 J602 J602 A-34 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 390: Special Tools

    A: Each service person is expected to carry one. B: Each five or so service persons is expected to carry one. C: Each workshop is expected to carry one. A-35 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 391: Solvents/Oils

    Mineral oil • CK-0451 (100cc) spring clutch (paraffin family) Lubricating oil Lubricating Silicone oil • CK-0551 (20g) drive and friction parts, scanner rail A-36 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 392 Prepared by Office Imaging Products Technical Support Division CANON INC. Printed in Japan REVISION 0 (AUG. 1999) (30359/10317) 5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302-8501 Japan COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
  • Page 393 This pubication is printed on 70% reprocessed paper. PRINTED IN JAPAN (IMPRIME AU JAPON) 0899AB2.135-1...