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... (image fault/malfunction). Chapter 11 Troubleshooting provides tables of operation used for the machine's fixing system. It also explains the timing at which exposurerelated mechanisms are operated,.... Appendix contains a general timing chart and general circuit diagrams. COPYRIGHT © 1999 CANON INC. Chapter 5 Pick-Up/Feeding System discusses the principles of operation. It also ...how they may be disassembled/assembled and adjusted. Chapter 2 Basic Operation explains how copies are operated, and shows how they may be disassembled/assembled and adjusted. This service...
... (image fault/malfunction). Chapter 11 Troubleshooting provides tables of operation used for the machine's fixing system. It also explains the timing at which exposurerelated mechanisms are operated,.... Appendix contains a general timing chart and general circuit diagrams. COPYRIGHT © 1999 CANON INC. Chapter 5 Pick-Up/Feeding System discusses the principles of operation. It also ...how they may be disassembled/assembled and adjusted. Chapter 2 Basic Operation explains how copies are operated, and shows how they may be disassembled/assembled and adjusted. This service...
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...8-14 H. Detecting Original Jams ..... 8-16 J. DISASSEMBLY/ASSEMBLY ..... 8-18 A. Feeding System 8-26 E. UNPACKING AND INSTALLATION 9-2 A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) vii External Covers 7-8 B. Controlling the Belt Motor .. 8-15... D. Unpacking and Installation ....9-2 B. MOVING THE MACHINE .......... 9-12 CHAPTER 10 MAINTENANCE AND SERVICING I. FANS 7-1 II. Protecting the Power Supply Circuit 7-6 III. Basic Operations 8-4 D. Drive System 8-23 D. ADF 8-1 A. Placing Copy Paper 9-9 III. External Covers 8-21 C. ...
...8-14 H. Detecting Original Jams ..... 8-16 J. DISASSEMBLY/ASSEMBLY ..... 8-18 A. Feeding System 8-26 E. UNPACKING AND INSTALLATION 9-2 A. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) vii External Covers 7-8 B. Controlling the Belt Motor .. 8-15... D. Unpacking and Installation ....9-2 B. MOVING THE MACHINE .......... 9-12 CHAPTER 10 MAINTENANCE AND SERVICING I. FANS 7-1 II. Protecting the Power Supply Circuit 7-6 III. Basic Operations 8-4 D. Drive System 8-23 D. ADF 8-1 A. Placing Copy Paper 9-9 III. External Covers 8-21 C. ...
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NAMES OF PARTS 1-10 A. IMAGE FORMATION 1-20 A. I. ADF 1-8 III. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline 1-20 COPYRIGHT © 1999 CANON INC. Control Panel 1-15 V. Copier 1-2 B. External View 1-10 B. SPECIFICATIONS 1-2 A. ROUTINE MAINTENANCE BY THE USER 1-17 VI. CHAPTER 1 GENERAL DESCRIPTION This chapter provides specifications of the machine, instructions on how to operate the machine, and an outline of copying process. FEATURES 1-1 II. USING THE MACHINE 1-15 A. Cross Section 1-13 IV.
NAMES OF PARTS 1-10 A. IMAGE FORMATION 1-20 A. I. ADF 1-8 III. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline 1-20 COPYRIGHT © 1999 CANON INC. Control Panel 1-15 V. Copier 1-2 B. External View 1-10 B. SPECIFICATIONS 1-2 A. ROUTINE MAINTENANCE BY THE USER 1-17 VI. CHAPTER 1 GENERAL DESCRIPTION This chapter provides specifications of the machine, instructions on how to operate the machine, and an outline of copying process. FEATURES 1-1 II. USING THE MACHINE 1-15 A. Cross Section 1-13 IV.
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...; The source of paper (500-sheet cassette + multifeeder; multifeeder type). 7. COPYRIGHT © 1999 CANON INC. CHAPTER 1 GENERAL DESCRIPTION I. FEATURES 1. The user may expect quality copy images at maximum (1/100 to make jam removal easy. 8. Separate top unit • The machine's top unit may contain as many as he/she performs simple replacement/cleaning...
...; The source of paper (500-sheet cassette + multifeeder; multifeeder type). 7. COPYRIGHT © 1999 CANON INC. CHAPTER 1 GENERAL DESCRIPTION I. FEATURES 1. The user may expect quality copy images at maximum (1/100 to make jam removal easy. 8. Separate top unit • The machine's top unit may contain as many as he/she performs simple replacement/cleaning...
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... selection indicator*1 5 Jam indicator 6 Count/ratio indicator 7 Clear/stop key 8 Copy start key 9 Power switch Figure 1-401 Description Adjusts the density of copies or reproduction ratio. • The symbol "%" turns on and off the power. COPYRIGHT © 1999 CANON INC. Turns on when indicating a ratio. 100 (max.; USING THE MACHINE A. CHAPTER 1 GENERAL DESCRIPTION IV.
... selection indicator*1 5 Jam indicator 6 Count/ratio indicator 7 Clear/stop key 8 Copy start key 9 Power switch Figure 1-401 Description Adjusts the density of copies or reproduction ratio. • The symbol "%" turns on and off the power. COPYRIGHT © 1999 CANON INC. Turns on when indicating a ratio. 100 (max.; USING THE MACHINE A. CHAPTER 1 GENERAL DESCRIPTION IV.
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... with a moist cloth (with water or mild detergent solution); Soiled Images a. COPYRIGHT © 1999 CANON INC. Caution: • 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...in Feeder Cleaning Mode 1) Turn on the original tray of blank copy paper (A4/LTR) on the machine, and hold down the Copy Density Mode Selection key for 4 sec or more. • The count/ratio indicator will be soiled or copy paper tends to end the mode. CHAPTER 1 GENERAL DESCRIPTION V.
... with a moist cloth (with water or mild detergent solution); Soiled Images a. COPYRIGHT © 1999 CANON INC. Caution: • 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...in Feeder Cleaning Mode 1) Turn on the original tray of blank copy paper (A4/LTR) on the machine, and hold down the Copy Density Mode Selection key for 4 sec or more. • The count/ratio indicator will be soiled or copy paper tends to end the mode. CHAPTER 1 GENERAL DESCRIPTION V.
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... 6. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21 Transfer Manual feed 5. positive DC) Step 6 Fixing Step 7 Drum cleaning Static latent image formation block 1. Separation Registration : Flow of copy paper ...Cassette : Rotation of the following seven steps: Step 1 Primary charging (AC + negative DC) Step 2 Image exposure Step 3 Development (AC + negative DC) Step 4 Transfer (negative DC) Step 5 Separation (curvature separation + static eliminator; Primary charging 2. Image exposure 7. Fixing 4. CHAPTER 1 GENERAL DESCRIPTION The machine...
... 6. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21 Transfer Manual feed 5. positive DC) Step 6 Fixing Step 7 Drum cleaning Static latent image formation block 1. Separation Registration : Flow of copy paper ...Cassette : Rotation of the following seven steps: Step 1 Primary charging (AC + negative DC) Step 2 Image exposure Step 3 Development (AC + negative DC) Step 4 Transfer (negative DC) Step 5 Separation (curvature separation + static eliminator; Primary charging 2. Image exposure 7. Fixing 4. CHAPTER 1 GENERAL DESCRIPTION The machine...
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...machine consists of four functional blocks: pickup/feeding system, exposure system, image formation system, and control system. Control system Control panel Exposure system Copyboard Control circuit Original illuminating block Optical block Primary charging roller Image formation system Drum cleaning block Photosensitive drum Developing assembly Copy... tray Feeding Fixing assembly/ delivery assembly Transfer/ separation Cassette Figure 2-101 Pickup control block Manual feed block Pickup/ feeding system COPYRIGHT © 1999 CANON INC. CHAPTER 2...
...machine consists of four functional blocks: pickup/feeding system, exposure system, image formation system, and control system. Control system Control panel Exposure system Copyboard Control circuit Original illuminating block Optical block Primary charging roller Image formation system Drum cleaning block Photosensitive drum Developing assembly Copy... tray Feeding Fixing assembly/ delivery assembly Transfer/ separation Cassette Figure 2-101 Pickup control block Manual feed block Pickup/ feeding system COPYRIGHT © 1999 CANON INC. CHAPTER 2...
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... and stopped, thereby lowering the temperature of the scanner is reduced to 6-cpm copying speed SCRV SCFW SCRV SCFW SCRV SCFW SCRV LSTR STBY ,,, Check timing by a thermistor (TH2); Controlling the Copying Speed The machine uses a halogen lamp for scanning, and the heat of the copyboard. II ... of the copyboard glass, the temperature of the copyboard fast. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Figure 3-106 3-6 COPYRIGHT © 1999 CANON INC. If this mechanism turns on during continuous copying, it remains on again next time, the scanner is turned...
... and stopped, thereby lowering the temperature of the scanner is reduced to 6-cpm copying speed SCRV SCFW SCRV SCFW SCRV SCFW SCRV LSTR STBY ,,, Check timing by a thermistor (TH2); Controlling the Copying Speed The machine uses a halogen lamp for scanning, and the heat of the copyboard. II ... of the copyboard glass, the temperature of the copyboard fast. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Figure 3-106 3-6 COPYRIGHT © 1999 CANON INC. If this mechanism turns on during continuous copying, it remains on again next time, the scanner is turned...
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...the DC controller PCB. The level of the DC bias. (See Table 4-102.) Reference: The machine applies a DC bias over a non-copy image area (between the copy image area (-625 V) and the non- Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanning lamp ...(LA1) Primary DC bias Primary AC bias -400V -625V Figure 4-104 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM d. CANON ...
...the DC controller PCB. The level of the DC bias. (See Table 4-102.) Reference: The machine applies a DC bias over a non-copy image area (between the copy image area (-625 V) and the non- Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Scanning lamp ...(LA1) Primary DC bias Primary AC bias -400V -625V Figure 4-104 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM d. CANON ...
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CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer bias to correct the changes in the transfer efficiency caused by the DC ... power supply PCB checks the transfer current detection signal (T_FW_S), and varies the transfer bias applied to the transfer roller. (See Table 4-103.) Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Cleaning bias Reference bias (ATVC) Transfer bias 1.2sec (approx.)...
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer bias to correct the changes in the transfer efficiency caused by the DC ... power supply PCB checks the transfer current detection signal (T_FW_S), and varies the transfer bias applied to the transfer roller. (See Table 4-103.) Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Cleaning bias Reference bias (ATVC) Transfer bias 1.2sec (approx.)...
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...changes in the DC bias occurring as a result of changes in the output of copy mode (toner save mode or photo mode is set . CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) The machine corrects the level of the developing DC bias and the voltage supplied to the ...scanning lamp as by a change the DC component of the developing bias so as to control the copy density: • Setting...
...changes in the DC bias occurring as a result of changes in the output of copy mode (toner save mode or photo mode is set . CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) The machine corrects the level of the developing DC bias and the voltage supplied to the ...scanning lamp as by a change the DC component of the developing bias so as to control the copy density: • Setting...
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Outline The machine is more or less uniform in density by varying the DC component of the developing bias according to control the DC component of Originals 1. CHAPTER 4 IMAGE FORMATION SYSTEM F. Measuring the Density of the developing bias. The AE mechanism enables production of copies free of fogging as long ... Photosensitive drum Microprocessor Microprocessor (Q900) Developing DCON signal Serial communication DC controller PCB Figure 4-113 Composite power supply PCB 4-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Outline The machine is more or less uniform in density by varying the DC component of the developing bias according to control the DC component of Originals 1. CHAPTER 4 IMAGE FORMATION SYSTEM F. Measuring the Density of the developing bias. The AE mechanism enables production of copies free of fogging as long ... Photosensitive drum Microprocessor Microprocessor (Q900) Developing DCON signal Serial communication DC controller PCB Figure 4-113 Composite power supply PCB 4-16 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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...rear used to the distance over which the lens moves as detected by the lens shift detecting shaft. Outline The machine is moved in Reduce mode Figure 4-122 COPYRIGHT © 1999 CANON INC. Rear side blanking lamp Reflecting plate Lens shift detecting shaft Front side blanking lamp (front) Figure 4-121 ... lamp in Direct and Reduce mode B: Position of the side blanking lamp in relation to prevent adhesion of excess toner when making reduced copies. 2. Controlling the Side Blanking Mechanism 1. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-21
...rear used to the distance over which the lens moves as detected by the lens shift detecting shaft. Outline The machine is moved in Reduce mode Figure 4-122 COPYRIGHT © 1999 CANON INC. Rear side blanking lamp Reflecting plate Lens shift detecting shaft Front side blanking lamp (front) Figure 4-121 ... lamp in Direct and Reduce mode B: Position of the side blanking lamp in relation to prevent adhesion of excess toner when making reduced copies. 2. Controlling the Side Blanking Mechanism 1. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-21
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...CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-23 Drum Cover Shutter If exposed to expose images. Light-Blocking Shutter When the cartridge is removed from light. Outline The machine..., the machine is designed to open the shutter unless absolutely necessary. COPYRIGHT © 1999 CANON INC. Do not open when the cartridge is fit into the machine and the machine's top unit... Cartridge 1. As in a single container referred to protect the photosensitive drum from the machine, light makes its way through the opening used to strong light for a long time...
...CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-23 Drum Cover Shutter If exposed to expose images. Light-Blocking Shutter When the cartridge is removed from light. Outline The machine..., the machine is designed to open the shutter unless absolutely necessary. COPYRIGHT © 1999 CANON INC. Do not open when the cartridge is fit into the machine and the machine's top unit... Cartridge 1. As in a single container referred to protect the photosensitive drum from the machine, light makes its way through the opening used to strong light for a long time...
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...Otherwise, the leaf spring used to apply a developing bias to 30000 lux. 4-24 COPYRIGHT © 1999 CANON INC. If you need to a level at which it will develop poor contact. 2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Be sure to direct sunlight. Caution:... cloth. If exposed to light for 5 min in which it rotates when making copies. CHAPTER 4 IMAGE FORMATION SYSTEM 2. Cleaning the Drum Caution: As a rule, do not touch or clean the photosensitive drum. 1) Open the machine's top unit, and take out the cartridge. 2) Turn over the cartridge, and...
...Otherwise, the leaf spring used to apply a developing bias to 30000 lux. 4-24 COPYRIGHT © 1999 CANON INC. If you need to a level at which it will develop poor contact. 2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Be sure to direct sunlight. Caution:... cloth. If exposed to light for 5 min in which it rotates when making copies. CHAPTER 4 IMAGE FORMATION SYSTEM 2. Cleaning the Drum Caution: As a rule, do not touch or clean the photosensitive drum. 1) Open the machine's top unit, and take out the cartridge. 2) Turn over the cartridge, and...
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Removing the Blanking Exposure Unit 1) Set the machine to the maximum ratio (141%) as follows: • Turn on the power, and select a default ratio of 141%. • Press the Copy Start key. • When the lens has moved to the farthest left, turn off the power. • Disconnect the power ... power supply PCB. (See Chapter 7.III.E.2."Removing the Composite Power Supply PCB.") 6) Remove the two screws [1]. [1] Figure 4-203 4-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Blank Exposure 1. CHAPTER 4 IMAGE FORMATION SYSTEM C.
Removing the Blanking Exposure Unit 1) Set the machine to the maximum ratio (141%) as follows: • Turn on the power, and select a default ratio of 141%. • Press the Copy Start key. • When the lens has moved to the farthest left, turn off the power. • Disconnect the power ... power supply PCB. (See Chapter 7.III.E.2."Removing the Composite Power Supply PCB.") 6) Remove the two screws [1]. [1] Figure 4-203 4-26 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Blank Exposure 1. CHAPTER 4 IMAGE FORMATION SYSTEM C.
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... with four sensors used to reach the copy tray. Notation Name PS3 Delivery sensor Remarks PS4 Vertical path roller paper sensor PS5 Single-feeder paper sensor Single-feeder model only Q751 Pre-registration roller paper sensor Table 5-101 COPYRIGHT © 1999 CANON INC. Outline The machine moves paper using a center reference method, in...
... with four sensors used to reach the copy tray. Notation Name PS3 Delivery sensor Remarks PS4 Vertical path roller paper sensor PS5 Single-feeder paper sensor Single-feeder model only Q751 Pre-registration roller paper sensor Table 5-101 COPYRIGHT © 1999 CANON INC. Outline The machine moves paper using a center reference method, in...
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... the drive reaches the cassette pickup roller. ing the drive to move to engage. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-3 DC ... path roller. Controlling the Pickup Roller 1. When the cassette pickup roller starts to rotate, copy paper is picked up from the control ring, allow- Controlling the Cassette Pickup Roller The ... spring clutch, control ring, pickup clutch solenoid (SL1), and cassette pickup solenoid (SL5). Outline The machine has three types of pickup rollers, i.e., cassette pickup roller, multifeeder pickup roller, and single-feeder pickup...
... the drive reaches the cassette pickup roller. ing the drive to move to engage. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-3 DC ... path roller. Controlling the Pickup Roller 1. When the cassette pickup roller starts to rotate, copy paper is picked up from the control ring, allow- Controlling the Cassette Pickup Roller The ... spring clutch, control ring, pickup clutch solenoid (SL1), and cassette pickup solenoid (SL5). Outline The machine has three types of pickup rollers, i.e., cassette pickup roller, multifeeder pickup roller, and single-feeder pickup...
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...; 1999 CANON INC. Re-Pickup (cassette pickup) If the vertical path roller paper sensor (PS4) does not detect copy paper within 0.5 sec after the pickup clutch solenoid (SL1) has turned don. If the vertical path roller paper sensor does not detect copy paper after re-pickup, the machine will assume... the absence of copy paper and will indicate " " in the count/ratio indicator in the control panel. (This mechanism substitutes a paper...
...; 1999 CANON INC. Re-Pickup (cassette pickup) If the vertical path roller paper sensor (PS4) does not detect copy paper within 0.5 sec after the pickup clutch solenoid (SL1) has turned don. If the vertical path roller paper sensor does not detect copy paper after re-pickup, the machine will assume... the absence of copy paper and will indicate " " in the count/ratio indicator in the control panel. (This mechanism substitutes a paper...