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... explains how copies are reproduced. Chapter 4 Image Formation System discusses the principles of installation, and shows how the machine may be disassembled/assembled and adjusted. Chapter 9 Installation introduces requirements for the site of operation used for the machine's exposure system... and general circuit diagrams. COPYRIGHT © 1999 CANON INC. 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 pickup/feeding system. It also explains the timing...
... explains how copies are reproduced. Chapter 4 Image Formation System discusses the principles of installation, and shows how the machine may be disassembled/assembled and adjusted. Chapter 9 Installation introduces requirements for the site of operation used for the machine's exposure system... and general circuit diagrams. COPYRIGHT © 1999 CANON INC. 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 pickup/feeding system. It also explains the timing...
Service Manual
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... J. Drive System 8-23 D. PERIODICALLY REPLACED PARTS 10-1 II. FANS 7-1 II. Copyboard Glass 7-16 D. Unpacking and Installation ....9-2 B. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) vii ADF 8-1 A. External Covers 8-21 C. Storing the Cartridge ...with the Packaging Seal Removed 10-3 COPYRIGHT © 1999 CANON INC. Detecting an Error on the Composite Power Supply PCB 7-6 D. MOVING THE MACHINE .......... 9-12 CHAPTER 10 MAINTENANCE AND SERVICING I . Removing the ADF 8-19 B. Delivery 8-12 G....
... J. Drive System 8-23 D. PERIODICALLY REPLACED PARTS 10-1 II. FANS 7-1 II. Copyboard Glass 7-16 D. Unpacking and Installation ....9-2 B. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) vii ADF 8-1 A. External Covers 8-21 C. Storing the Cartridge ...with the Packaging Seal Removed 10-3 COPYRIGHT © 1999 CANON INC. Detecting an Error on the Composite Power Supply PCB 7-6 D. MOVING THE MACHINE .......... 9-12 CHAPTER 10 MAINTENANCE AND SERVICING I . Removing the ADF 8-19 B. Delivery 8-12 G....
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Copier 1-2 B. External View 1-10 B. IMAGE FORMATION 1-20 A. SPECIFICATIONS 1-2 A. ADF 1-8 III. USING THE MACHINE 1-15 A. Control Panel 1-15 V. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 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. Cross Section 1-13 IV. Outline 1-20 COPYRIGHT © 1999 CANON INC. ROUTINE MAINTENANCE BY THE USER 1-17 VI. NAMES OF PARTS 1-10 A. I.
Copier 1-2 B. External View 1-10 B. IMAGE FORMATION 1-20 A. SPECIFICATIONS 1-2 A. ADF 1-8 III. USING THE MACHINE 1-15 A. Control Panel 1-15 V. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 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. Cross Section 1-13 IV. Outline 1-20 COPYRIGHT © 1999 CANON INC. ROUTINE MAINTENANCE BY THE USER 1-17 VI. NAMES OF PARTS 1-10 A. I.
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... to 1/1000 compared with existing Canon machines). 3. CHAPTER 1 GENERAL DESCRIPTION I. Personal Copier with the use of a roller charging method has resulted in a considerable reduction of paper (500-sheet cassette + multifeeder; All-in 1% increments. 2. ADF Type • Continuous copying is 0 sec (at all ...less at maximum (1/100 to make jam removal easy. 8. Large Paper Source • The source of the ADF. COPYRIGHT © 1999 CANON INC. SURF Fixing Assembly • The wait time is possible with a Zoom Function and a Fixed Copyboard • You can choose either...
... to 1/1000 compared with existing Canon machines). 3. CHAPTER 1 GENERAL DESCRIPTION I. Personal Copier with the use of a roller charging method has resulted in a considerable reduction of paper (500-sheet cassette + multifeeder; All-in 1% increments. 2. ADF Type • Continuous copying is 0 sec (at all ...less at maximum (1/100 to make jam removal easy. 8. Large Paper Source • The source of the ADF. COPYRIGHT © 1999 CANON INC. SURF Fixing Assembly • The wait time is possible with a Zoom Function and a Fixed Copyboard • You can choose either...
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... • The symbol "%" turns on and off the power. USING THE MACHINE A. Standard Mode Ratio: 100% Count: 1 Paper source: cassette Copy density: auto mode Starts copying. CHAPTER 1 GENERAL DESCRIPTION IV. Indicates the selected default ratio. Indicates the... Indicates the selected copy density mode. Turns on when indicating a ratio. 100 (max.; COPYRIGHT © 1999 CANON INC. continuous copying) Stops copying or returns copying mode to a jam. • Indicates the number of copies manually. Flashes in response to standard mode. CANON PC800s/900s REV.0...
... • The symbol "%" turns on and off the power. USING THE MACHINE A. Standard Mode Ratio: 100% Count: 1 Paper source: cassette Copy density: auto mode Starts copying. CHAPTER 1 GENERAL DESCRIPTION IV. Indicates the selected default ratio. Indicates the... Indicates the selected copy density mode. Turns on when indicating a ratio. 100 (max.; COPYRIGHT © 1999 CANON INC. continuous copying) Stops copying or returns copying mode to a jam. • Indicates the number of copies manually. Flashes in response to standard mode. CANON PC800s/900s REV.0...
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...Mode 1) Turn on the original tray of the ADF. 3) Press the Copy Start key. • Copy paper will indicate 'U6'. 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...a. 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 mode is being executed. then, dry wipe it. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON...
...Mode 1) Turn on the original tray of the ADF. 3) Press the Copy Start key. • Copy paper will indicate 'U6'. 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...a. 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 mode is being executed. then, dry wipe it. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON...
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...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; CHAPTER 1 GENERAL DESCRIPTION The machine...'s image formation process consists of the photosensitive drum Figure 1-602 COPYRIGHT © 1999 CANON INC. Drum cleaning 3. Fixing 4. positive DC) Step 6 Fixing Step 7 Drum cleaning...
...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; CHAPTER 1 GENERAL DESCRIPTION The machine...'s image formation process consists of the photosensitive drum Figure 1-602 COPYRIGHT © 1999 CANON INC. Drum cleaning 3. Fixing 4. positive DC) Step 6 Fixing Step 7 Drum cleaning...
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...machine consists of four functional blocks: pickup/feeding system, exposure system, image formation system, and control system. BASIC OPERATIONS A. 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.
...machine consists of four functional blocks: pickup/feeding system, exposure system, image formation system, and control system. BASIC OPERATIONS A. 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.
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Controlling the Copying Speed The machine uses a halogen lamp for scanning, and the heat of the copying job. If this mechanism turns on during continuous copying, it remains on again next time, the scanner is monitored by thermistor (TH2) Main motor (M1) Pickup clutch solenoid (SL1) Registration... end of the lamp increases the tempera- Figure 3-106 3-6 COPYRIGHT © 1999 CANON INC. if its reading reaches 37.5°C or higher, the copying speed is moved forward 105 mm from the home position. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) At the...
Controlling the Copying Speed The machine uses a halogen lamp for scanning, and the heat of the copying job. If this mechanism turns on during continuous copying, it remains on again next time, the scanner is monitored by thermistor (TH2) Main motor (M1) Pickup clutch solenoid (SL1) Registration... end of the lamp increases the tempera- Figure 3-106 3-6 COPYRIGHT © 1999 CANON INC. if its reading reaches 37.5°C or higher, the copying speed is moved forward 105 mm from the home position. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) At the...
Service Manual
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... (IMPRIME AU JAPON) 4-7 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. Switching the DC Bias Level The machine switches the DC bias level... between sheets) so as to prevent charging the photosensitive drum to a positive potential otherwise caused by the DC controller PCB. copy image area (-400 V). The level of the ...
... (IMPRIME AU JAPON) 4-7 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. Switching the DC Bias Level The machine switches the DC bias level... between sheets) so as to prevent charging the photosensitive drum to a positive potential otherwise caused by the DC controller PCB. copy image area (-400 V). The level of the ...
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.... To remove excess toner, a positive voltage is applied to the transfer charging roller during initial rotation executed each time the Copy Start key is applied to the transfer roller as when a jam occurs if left unattended. Reference: While the transfer charging ... (approx.) 0.7sec (approx.) 1.6sec(approx.) Figure 4-106 4-10 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM c. d. Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer roller or the changes in which last rotation...
.... To remove excess toner, a positive voltage is applied to the transfer charging roller during initial rotation executed each time the Copy Start key is applied to the transfer roller as when a jam occurs if left unattended. Reference: While the transfer charging ... (approx.) 0.7sec (approx.) 1.6sec(approx.) Figure 4-106 4-10 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM c. d. Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer roller or the changes in which last rotation...
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...to control the copy density: • Setting of the density adjusting lever (in manual adjustment mode) • Output of the AE sensor (in the sensitivity of the Developing DC Bias The DC bias control signal (BIAS_PWM) is selected. SW101 Figure 4-108 If the machine is not equipped...the following settings to change in automatic control mode) • Setting of copy mode (toner save mode, photo mode) • Setting of the AE sensor during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. The density correction switch (SW101) affects both manual density adjustment and...
...to control the copy density: • Setting of the density adjusting lever (in manual adjustment mode) • Output of the AE sensor (in the sensitivity of the Developing DC Bias The DC bias control signal (BIAS_PWM) is selected. SW101 Figure 4-108 If the machine is not equipped...the following settings to change in automatic control mode) • Setting of copy mode (toner save mode, photo mode) • Setting of the AE sensor during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. The density correction switch (SW101) affects both manual density adjustment and...
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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 original. Scanning ... 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. 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...
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 original. Scanning ... 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. 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...
Service Manual
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...Non-image area in Reduce mode A: Position 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) 4-21 Operations To blank out the non-image area in Reduce mode ...Figure 4-122 COPYRIGHT © 1999 CANON INC. Controlling the Side Blanking Mechanism 1. Outline The machine is moved in relation to prevent adhesion of the side blanking lamp in reduce mode, the side blanking lamp is ...
...Non-image area in Reduce mode A: Position 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) 4-21 Operations To blank out the non-image area in Reduce mode ...Figure 4-122 COPYRIGHT © 1999 CANON INC. Controlling the Side Blanking Mechanism 1. Outline The machine is moved in relation to prevent adhesion of the side blanking lamp in reduce mode, the side blanking lamp is ...
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... strong light for a long time, the photosensitive drum can develop photo memory, which can cause white spots or black bands on copies. Outline The machine's photosensitive drum, primary charging roller, developing assembly, and cleaner are housed in the case of the drum cover shutter, the light.... Light-Blocking Shutter When the cartridge is provided to protect the photosensitive drum from the machine, light makes its way through the opening used to open the shutter unless absolutely necessary. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-23 To prevent...
... strong light for a long time, the photosensitive drum can develop photo memory, which can cause white spots or black bands on copies. Outline The machine's photosensitive drum, primary charging roller, developing assembly, and cleaner are housed in the case of the drum cover shutter, the light.... Light-Blocking Shutter When the cartridge is provided to protect the photosensitive drum from the machine, light makes its way through the opening used to open the shutter unless absolutely necessary. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-23 To prevent...
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... bias to light of the sun are usually about 10000 to work briskly. If exposed to light for 5 min in which it rotates when making copies. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 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 3) Clean the drum surface with a flannel cloth coated...
... bias to light of the sun are usually about 10000 to work briskly. If exposed to light for 5 min in which it rotates when making copies. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 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 3) Clean the drum surface with a flannel cloth coated...
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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) CHAPTER 4 IMAGE FORMATION SYSTEM C. Blank Exposure 1.
Removing the Blanking Exposure Unit 1) Set the machine to the maximum ratio (141%) as follows: • Turn on the power, and select a default ratio of 141%. • Press the 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) CHAPTER 4 IMAGE FORMATION SYSTEM C. Blank Exposure 1.
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...reach the copy tray. The machine is equipped with a cassette, multifeeder, and single-feeder as the source of the pickup/feeding path, and is controlled by the registration roller so that its leading edge will match the leading edge of copy paper. ...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. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-1 Outline The machine...
...reach the copy tray. The machine is equipped with a cassette, multifeeder, and single-feeder as the source of the pickup/feeding path, and is controlled by the registration roller so that its leading edge will match the leading edge of copy paper. ...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. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-1 Outline The machine...
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When the cassette pickup roller starts to rotate, copy paper is picked up from the control ring, allow- CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-3 The registration roller controls paper so that its .... 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 pickup...
When the cassette pickup roller starts to rotate, copy paper is picked up from the control ring, allow- CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-3 The registration roller controls paper so that its .... 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 pickup...
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... cassette pickup solenoid (SL5) turns on . Figure 5-105 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-5 If the vertical path roller paper sensor does not detect copy paper after re-pickup, the machine will indicate " " in the count/ratio indicator in the control panel. (This...
... cassette pickup solenoid (SL5) turns on . Figure 5-105 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-5 If the vertical path roller paper sensor does not detect copy paper after re-pickup, the machine will indicate " " in the count/ratio indicator in the control panel. (This...