Service Manual
Page 3
... used for the machine's fixing system. Appendix contains a general timing chart and general circuit diagrams. COPYRIGHT © 1999 CANON INC. Chapter 6... Fixing System discusses the principles of maintenance/inspection, standards/ adjustments, and problem identification (image fault/malfunction). This service manual consists of the following chapters: Chapter 1 General Description introduces the machine's features, specifications, names of operation used for the machine's image formation system. Chapter 2 Basic Operation explains how copies...
... used for the machine's fixing system. Appendix contains a general timing chart and general circuit diagrams. COPYRIGHT © 1999 CANON INC. Chapter 6... Fixing System discusses the principles of maintenance/inspection, standards/ adjustments, and problem identification (image fault/malfunction). This service manual consists of the following chapters: Chapter 1 General Description introduces the machine's features, specifications, names of operation used for the machine's image formation system. Chapter 2 Basic Operation explains how copies...
Service Manual
Page 9
...Copy Paper 9-9 III. SCHEDULED SERVICING ....... 10-1 IV. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) vii POWER SUPPLY SYSTEM .........7-3 A. Protecting the Power Supply Circuit 7-6 III. Controlling the Pickup Motor 8-14 H. Controlling the Belt Motor .. 8-15 I . SELECTING A SITE 9-1 II. MOVING THE MACHINE...Panel 7-15 C. External Covers 8-21 C. Storing the Cartridge with the Packaging Seal Removed 10-3 COPYRIGHT © 1999 CANON INC. FANS 7-1 II. Copyboard Glass 7-16 D. Delivery 8-12 G. Outline of the Power Supply System 7-3 B. ...
...Copy Paper 9-9 III. SCHEDULED SERVICING ....... 10-1 IV. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) vii POWER SUPPLY SYSTEM .........7-3 A. Protecting the Power Supply Circuit 7-6 III. Controlling the Pickup Motor 8-14 H. Controlling the Belt Motor .. 8-15 I . SELECTING A SITE 9-1 II. MOVING THE MACHINE...Panel 7-15 C. External Covers 8-21 C. Storing the Cartridge with the Packaging Seal Removed 10-3 COPYRIGHT © 1999 CANON INC. FANS 7-1 II. Copyboard Glass 7-16 D. Delivery 8-12 G. Outline of the Power Supply System 7-3 B. ...
Service Manual
Page 11
ADF 1-8 III. ROUTINE MAINTENANCE BY THE USER 1-17 VI. SPECIFICATIONS 1-2 A. NAMES OF PARTS 1-10 A. Copier 1-2 B. USING THE MACHINE 1-15 A. Outline 1-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Cross Section 1-13 IV. Control Panel 1-15 V. External View 1-10 B. FEATURES 1-1 II. IMAGE FORMATION 1-20 A. CHAPTER 1 GENERAL DESCRIPTION This chapter provides specifications of the machine, instructions on how to operate the machine, and an outline of copying process. I.
ADF 1-8 III. ROUTINE MAINTENANCE BY THE USER 1-17 VI. SPECIFICATIONS 1-2 A. NAMES OF PARTS 1-10 A. Copier 1-2 B. USING THE MACHINE 1-15 A. Outline 1-20 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Cross Section 1-13 IV. Control Panel 1-15 V. External View 1-10 B. FEATURES 1-1 II. IMAGE FORMATION 1-20 A. CHAPTER 1 GENERAL DESCRIPTION This chapter provides specifications of the machine, instructions on how to operate the machine, and an outline of copying process. I.
Service Manual
Page 13
... use of a roller charging method has resulted in a considerable reduction of the ADF. ADF Type • Continuous copying is 0 sec (at 20°C room temperature), enabling speedy copying work . 6. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-1 The user may be as large as...-on the average, 0.02 ppm or less at all times as long as a business card. 5. Separate top unit • The machine's top unit may expect quality copy images at maximum (1/100 to make jam removal easy. 8. CHAPTER 1 GENERAL DESCRIPTION I. Personal Copier with a Zoom Function and a Fixed...
... use of a roller charging method has resulted in a considerable reduction of the ADF. ADF Type • Continuous copying is 0 sec (at 20°C room temperature), enabling speedy copying work . 6. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-1 The user may be as large as...-on the average, 0.02 ppm or less at all times as long as a business card. 5. Separate top unit • The machine's top unit may expect quality copy images at maximum (1/100 to make jam removal easy. 8. CHAPTER 1 GENERAL DESCRIPTION I. Personal Copier with a Zoom Function and a Fixed...
Service Manual
Page 27
... IV. COPYRIGHT © 1999 CANON INC. Remarks Indicates the selected copy density mode. continuous copying) Stops copying or returns copying mode to a jam. • Indicates the number of copies manually. CANON PC800s/900s REV.0 AUG. 1999...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. Flashes in response to standard mode. Standard Mode Ratio: 100% Count: 1 Paper source: cassette Copy density: auto mode Starts copying. USING THE MACHINE...
... IV. COPYRIGHT © 1999 CANON INC. Remarks Indicates the selected copy density mode. continuous copying) Stops copying or returns copying mode to a jam. • Indicates the number of copies manually. CANON PC800s/900s REV.0 AUG. 1999...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. Flashes in response to standard mode. Standard Mode Ratio: 100% Count: 1 Paper source: cassette Copy density: auto mode Starts copying. USING THE MACHINE...
Service Manual
Page 29
...Turn on the original tray of the ADF. 3) Press the Copy Start key. • Copy paper will indicate 'U6'. COPYRIGHT © 1999 CANON INC. Zoom Figure 1-501 2) Place about 10 sheets 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....
...Turn on the original tray of the ADF. 3) Press the Copy Start key. • Copy paper will indicate 'U6'. COPYRIGHT © 1999 CANON INC. Zoom Figure 1-501 2) Place about 10 sheets 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....
Service Manual
Page 33
...Step 7 Drum cleaning Static latent image formation block 1. CHAPTER 1 GENERAL DESCRIPTION The machine's image formation process consists of the photosensitive drum Figure 1-602 COPYRIGHT © 1999 CANON INC. Fixing 4. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21... Separation Registration : Flow of copy paper Cassette : Rotation of the following seven steps: Step 1 Primary...
...Step 7 Drum cleaning Static latent image formation block 1. CHAPTER 1 GENERAL DESCRIPTION The machine's image formation process consists of the photosensitive drum Figure 1-602 COPYRIGHT © 1999 CANON INC. Fixing 4. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21... Separation Registration : Flow of copy paper Cassette : Rotation of the following seven steps: Step 1 Primary...
Service Manual
Page 37
... 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. Functional Construction The machine consists of four functional blocks: pickup/feeding system, exposure system, image...
... 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. Functional Construction The machine consists of four functional blocks: pickup/feeding system, exposure system, image...
Service Manual
Page 56
CHAPTER 3 EXPOSURE SYSTEM 4. Controlling the Copying Speed The machine uses a halogen lamp for scanning, and the heat of the pickup clutch solenoid (SL1). Reference: While the copying speed is controlled to 6 cpm, the speed of the reverse movement of the scanner is reduced to prevent overheating of...is turned off to 6 cpm. Figure 3-106 3-6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) if its reading reaches 37.5°C or higher, the copying speed is moved forward 105 mm from the home position. To prevent possible ...
CHAPTER 3 EXPOSURE SYSTEM 4. Controlling the Copying Speed The machine uses a halogen lamp for scanning, and the heat of the pickup clutch solenoid (SL1). Reference: While the copying speed is controlled to 6 cpm, the speed of the reverse movement of the scanner is reduced to prevent overheating of...is turned off to 6 cpm. Figure 3-106 3-6 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) if its reading reaches 37.5°C or higher, the copying speed is moved forward 105 mm from the home position. To prevent possible ...
Service Manual
Page 101
... (-400 V). 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. Switching the DC Bias Level The machine switches the DC bias...
... (-400 V). 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. Switching the DC Bias Level The machine switches the DC bias...
Service Manual
Page 104
...(Q900) on the composite power supply PCB causes the transfer positive DC bias On signal (T_REV_ON*) 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.)...the transfer charging roller so that the positive component of the readings. 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 roller or the ...
...(Q900) on the composite power supply PCB causes the transfer positive DC bias On signal (T_REV_ON*) 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.)...the transfer charging roller so that the positive component of the readings. 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 roller or the ...
Service Manual
Page 108
... density adjustment (AE). SW101 Figure 4-108 If the machine is not equipped with a density correction switch (SW101), the image density changes in the output of the AE sensor during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. Controlling the Voltage Level of the Developing DC ...Setting of the density adjusting lever (in manual adjustment mode) • Output of the AE sensor (in automatic control mode) • Setting of copy mode (toner save mode, photo mode) • Setting of the density correction switch (SW101) The density correction switch (SW101) mounted on the ...
... density adjustment (AE). SW101 Figure 4-108 If the machine is not equipped with a density correction switch (SW101), the image density changes in the output of the AE sensor during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. Controlling the Voltage Level of the Developing DC ...Setting of the density adjusting lever (in manual adjustment mode) • Output of the AE sensor (in automatic control mode) • Setting of copy mode (toner save mode, photo mode) • Setting of the density correction switch (SW101) The density correction switch (SW101) mounted on the ...
Service Manual
Page 110
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 the original. The AE mechanism enables production of copies free of fogging as long as the original is equipped with an auto density adjustment (...AE) mechanism designed to the density of the developing bias. 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 the original. The AE mechanism enables production of copies free of fogging as long as the original is equipped with an auto density adjustment (...AE) mechanism designed to the density of the developing bias. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)...
Service Manual
Page 115
... the lens moves as detected by the lens shift detecting shaft. Outline The machine is moved in relation to prevent adhesion of the side blanking lamp in Direct and Reduce mode B: Position of excess toner when making reduced copies. 2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-... Reflecting plate A B B A , , Photosensitive drum Non-image area in Reduce mode A: Position of the side blanking lamp in Reduce mode Figure 4-122 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM G. Controlling the Side Blanking Mechanism 1.
... the lens moves as detected by the lens shift detecting shaft. Outline The machine is moved in relation to prevent adhesion of the side blanking lamp in Direct and Reduce mode B: Position of excess toner when making reduced copies. 2. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-... Reflecting plate A B B A , , Photosensitive drum Non-image area in Reduce mode A: Position of the side blanking lamp in Reduce mode Figure 4-122 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM G. Controlling the Side Blanking Mechanism 1.
Service Manual
Page 117
... makes its way through the opening used to open the shutter unless absolutely necessary. Do not open when the cartridge is fit into the machine and the machine's top unit is removed from light. Drum Cover Shutter If exposed to as a "cartridge." (You cannot disassemble the cartridge.) Developing blade... referred to strong light for a long time, the photosensitive drum can develop photo memory, which can cause white spots or black bands on copies. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-23 CHAPTER 4 IMAGE FORMATION SYSTEM A. COPYRIGHT © 1999...
... makes its way through the opening used to open the shutter unless absolutely necessary. Do not open when the cartridge is fit into the machine and the machine's top unit is removed from light. Drum Cover Shutter If exposed to as a "cartridge." (You cannot disassemble the cartridge.) Developing blade... referred to strong light for a long time, the photosensitive drum can develop photo memory, which can cause white spots or black bands on copies. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-23 CHAPTER 4 IMAGE FORMATION SYSTEM A. COPYRIGHT © 1999...
Service Manual
Page 118
... sure to rotate it in the direction in a dark place, it will cause no practical problem. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Caution: 1. Cleaning the Drum... Caution: As a rule, do not touch or clean the photosensitive drum. 1) Open the machine's top unit, and take out the cartridge. 2) Turn over the cartridge, and open the drum cover shutter ...cloth coated with toner. If exposed to light for 5 min in which it rotates when making copies. If you must clean it to a level at which it will recover to direct sunlight. ...
... sure to rotate it in the direction in a dark place, it will cause no practical problem. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Caution: 1. Cleaning the Drum... Caution: As a rule, do not touch or clean the photosensitive drum. 1) Open the machine's top unit, and take out the cartridge. 2) Turn over the cartridge, and open the drum cover shutter ...cloth coated with toner. If exposed to light for 5 min in which it rotates when making copies. If you must clean it to a level at which it will recover to direct sunlight. ...
Service Manual
Page 120
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 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....") 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]. [1] Figure 4-203 4-26 COPYRIGHT © 1999 CANON INC. Blank Exposure 1. CHAPTER 4 IMAGE FORMATION SYSTEM C.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 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....") 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]. [1] Figure 4-203 4-26 COPYRIGHT © 1999 CANON INC. Blank Exposure 1. CHAPTER 4 IMAGE FORMATION SYSTEM C.
Service Manual
Page 125
...reach the copy tray. CHAPTER 5 PICK-UP/FEEDING SYSTEM I. Outline The machine moves paper using a center reference method, in which paper is moved in the middle of the pickup/feeding path, and is equipped with a cassette, multifeeder, and single-feeder as the source of paper. CANON PC800s/900s... REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-1 From the cassette, multifeeder, or single-feeder, copy paper is picked up and is then moved through the transfer, separation, feeding, and...
...reach the copy tray. CHAPTER 5 PICK-UP/FEEDING SYSTEM I. Outline The machine moves paper using a center reference method, in which paper is moved in the middle of the pickup/feeding path, and is equipped with a cassette, multifeeder, and single-feeder as the source of paper. CANON PC800s/900s... REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-1 From the cassette, multifeeder, or single-feeder, copy paper is picked up and is then moved through the transfer, separation, feeding, and...
Service Manual
Page 127
DC controller PCB Spring Gear Pickup roller Pickup roller gear Arm SL1 When SL5 turns on the photosensitive drum. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-3 Then, when the cassette pickup solenoid turns ... Cassette pickup solenoid drive signal (CPUSD*) Pickup clutch solenoid drive signal (PUSLD*) Pickup clutch SL5 Copy paper Cassette pickup rollers Figure 5-103 (Multifeeder type) COPYRIGHT © 1999 CANON INC. Outline The machine has three types of pickup rollers, i.e., cassette pickup roller, multifeeder pickup roller, and single-feeder ...
DC controller PCB Spring Gear Pickup roller Pickup roller gear Arm SL1 When SL5 turns on the photosensitive drum. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-3 Then, when the cassette pickup solenoid turns ... Cassette pickup solenoid drive signal (CPUSD*) Pickup clutch solenoid drive signal (PUSLD*) Pickup clutch SL5 Copy paper Cassette pickup rollers Figure 5-103 (Multifeeder type) COPYRIGHT © 1999 CANON INC. Outline The machine has three types of pickup rollers, i.e., cassette pickup roller, multifeeder pickup roller, and single-feeder ...
Service Manual
Page 129
... (as for recycled paper). CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Figure 5-105 COPYRIGHT © 1999 CANON INC. If the vertical path roller paper sensor does not detect copy paper after re-pickup, the machine will assume the absence of time after the pickup clutch solenoid (SL1) has turned don. II :... The cassette pickup solenoid (SL5) turns on once again about 1.3 sec after the pickup clutch solenoid (SL1) turns on. CANON PC800s/900s REV.0...
... (as for recycled paper). CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Figure 5-105 COPYRIGHT © 1999 CANON INC. If the vertical path roller paper sensor does not detect copy paper after re-pickup, the machine will assume the absence of time after the pickup clutch solenoid (SL1) has turned don. II :... The cassette pickup solenoid (SL5) turns on once again about 1.3 sec after the pickup clutch solenoid (SL1) turns on. CANON PC800s/900s REV.0...