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...ozone: 0.01 ppm or less on . 4. COPYRIGHT © 1999 CANON INC. All-in a considerable reduction of a roller charging method has resulted in -One Cartridge for Simple Maintenance • The photosensitive drum, toner case, charging roller, developing assembly, and cleaning assembly are ...Separate top unit • The machine's top unit may expect quality copy images 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 Ecology-Conscious • The use of paper (500-sheet cassette +...
...ozone: 0.01 ppm or less on . 4. COPYRIGHT © 1999 CANON INC. All-in a considerable reduction of a roller charging method has resulted in -One Cartridge for Simple Maintenance • The photosensitive drum, toner case, charging roller, developing assembly, and cleaning assembly are ...Separate top unit • The machine's top unit may expect quality copy images 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 Ecology-Conscious • The use of paper (500-sheet cassette +...
Service Manual
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...Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model) Fixed focal point lens OPC drum (24-mm dia.) Table 1-201 Descriptions Indirect static reproduction Roller (direct charging) Slit (moving light source) Auto or manual Dry (toner... projection) Cassette (1 pc.) Single-feeder (single-feeder type) Multifeeder (multifeeder type) Curvature separation + static eliminator Flat heater Blade Center reference (copyboard) Table 1-202 1-2 COPYRIGHT © 1999 CANON INC. Type Item Body Copyboard Source of light Lens Photosensitive ...
...Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model) Fixed focal point lens OPC drum (24-mm dia.) Table 1-201 Descriptions Indirect static reproduction Roller (direct charging) Slit (moving light source) Auto or manual Dry (toner... projection) Cassette (1 pc.) Single-feeder (single-feeder type) Multifeeder (multifeeder type) Curvature separation + static eliminator Flat heater Blade Center reference (copyboard) Table 1-202 1-2 COPYRIGHT © 1999 CANON INC. Type Item Body Copyboard Source of light Lens Photosensitive ...
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CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 1 GENERAL DESCRIPTION VI. Outline The construction of the machine is as follows: Scanning lamp Copyboard glass Fixed focal point lens Side blanking lamp (front, rear) Primary charging roller Developing blade Fixing assembly Cleaning blade Developing cylinder Photosensitive drum Figure 1-601 Transfer charging roller Static eliminator 1-20 COPYRIGHT © 1999 CANON INC. IMAGE FORMATION A.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 1 GENERAL DESCRIPTION VI. Outline The construction of the machine is as follows: Scanning lamp Copyboard glass Fixed focal point lens Side blanking lamp (front, rear) Primary charging roller Developing blade Fixing assembly Cleaning blade Developing cylinder Photosensitive drum Figure 1-601 Transfer charging roller Static eliminator 1-20 COPYRIGHT © 1999 CANON INC. IMAGE FORMATION A.
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...) Step 4 Transfer (negative DC) Step 5 Separation (curvature separation + static eliminator; Primary charging 2. Development Delivery 6. Fixing 4. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21 CHAPTER 1 GENERAL DESCRIPTION The machine's image formation process consists of the photosensitive drum Figure 1-602 COPYRIGHT © 1999 CANON INC. Transfer Manual feed 5. Image exposure 7.
...) Step 4 Transfer (negative DC) Step 5 Separation (curvature separation + static eliminator; Primary charging 2. Development Delivery 6. Fixing 4. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 1-21 CHAPTER 1 GENERAL DESCRIPTION The machine's image formation process consists of the photosensitive drum Figure 1-602 COPYRIGHT © 1999 CANON INC. Transfer Manual feed 5. Image exposure 7.
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... 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. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU...
... 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. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU...
Service Manual
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... ensuring ward. Illuminates the original by the scanning lamp, and the reflected optical image is pressed. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) a stable drum sensitivity. While the scanner is moving in reverse. • The reverse speed is moving forward. • ...Measures the density of the original. 10 cm and then moves it in Direct. Neutralizes the drum surface potential as the forward speed used in reverse. Table 2-101 2-4 COPYRIGHT © 1999 CANON INC. From when SCRV ends to the home position in preparation for - Moves the scanner ...
... ensuring ward. Illuminates the original by the scanning lamp, and the reflected optical image is pressed. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) a stable drum sensitivity. While the scanner is moving in reverse. • The reverse speed is moving forward. • ...Measures the density of the original. 10 cm and then moves it in Direct. Neutralizes the drum surface potential as the forward speed used in reverse. Table 2-101 2-4 COPYRIGHT © 1999 CANON INC. From when SCRV ends to the home position in preparation for - Moves the scanner ...
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...M1) Hall IC output MMCLK Composite power supply PCB 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) 2-5 Executes constant speed rotation control. Error detection... Issues 'E010'. Moving/drive parts Photosensitive drum, primary charging roller, developing assembly, transfer charging roller, pickup roller, vertical roller, registration roller, ...
...M1) Hall IC output MMCLK Composite power supply PCB 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) 2-5 Executes constant speed rotation control. Error detection... Issues 'E010'. Moving/drive parts Photosensitive drum, primary charging roller, developing assembly, transfer charging roller, pickup roller, vertical roller, registration roller, ...
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... variation Lens drive control Scanner drive control Protective function Halogen Description By moving the No. 1 mirror mount By a sensor (scanner home position sensor; Figure 3-101 CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-1 CHAPTER 3 EXPOSURE SYSTEM I. OPERATIONS A. Outline Table 3-101 shows the major functions of ... lamp) • Thermal fuse (FU1; blows at 128°C) Table 3-101 Copyboard glass Enlarge Reduce Moves for enlargement/ reduction Fixed focal point lens Photosensitive drum No. 4/5 mirror unit COPYRIGHT © 1999 CANON INC.
... variation Lens drive control Scanner drive control Protective function Halogen Description By moving the No. 1 mirror mount By a sensor (scanner home position sensor; Figure 3-101 CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 3-1 CHAPTER 3 EXPOSURE SYSTEM I. OPERATIONS A. Outline Table 3-101 shows the major functions of ... lamp) • Thermal fuse (FU1; blows at 128°C) Table 3-101 Copyboard glass Enlarge Reduce Moves for enlargement/ reduction Fixed focal point lens Photosensitive drum No. 4/5 mirror unit COPYRIGHT © 1999 CANON INC.
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... Reduction Optical length F' F L2 F' Enlargement F Optical length L3 Optical length: L1 < L2, L1 < L3 Figure 3-102 3-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) In the lens drive system, the positions of the No. 1 mirror mount is changed... to vary the reproduction ratio. Varying the Reproduction Ratio The reproduction ratio in the drum axial direction (main ...
... Reduction Optical length F' F L2 F' Enlargement F Optical length L3 Optical length: L1 < L2, L1 < L3 Figure 3-102 3-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) In the lens drive system, the positions of the No. 1 mirror mount is changed... to vary the reproduction ratio. Varying the Reproduction Ratio The reproduction ratio in the drum axial direction (main ...
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CHAPTER 4 IMAGE FORMATION SYSTEM Copyboard glass Scanning lamp AE sensor Side blanking lamp Lens Primary charging roller Developing cylinder Photosensitive drum Drum cartridge Static eliminator Transfer roller Q101 Microprocessor DC controller PCB Lamp regulator block High-voltage circuit block Q900 Microprocessor Composite power supply PCB Figure 4-101 4-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM Copyboard glass Scanning lamp AE sensor Side blanking lamp Lens Primary charging roller Developing cylinder Photosensitive drum Drum cartridge Static eliminator Transfer roller Q101 Microprocessor DC controller PCB Lamp regulator block High-voltage circuit block Q900 Microprocessor Composite power supply PCB Figure 4-101 4-2 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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... DC bias and AC bias are applied to the primary charging roller so as to 3000 Vpp (885µA) 4-4 COPYRIGHT © 1999 CANON INC. The level of the photosensitive drum will be uniform. Outline The circuit shown in Figure 4-103 is switched between when forming copy images and when not forming copy...
... DC bias and AC bias are applied to the primary charging roller so as to 3000 Vpp (885µA) 4-4 COPYRIGHT © 1999 CANON INC. The level of the photosensitive drum will be uniform. Outline The circuit shown in Figure 4-103 is switched between when forming copy images and when not forming copy...
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CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-5 Main transformer T101 CHAPTER 4 IMAGE FORMATION SYSTEM Voltage separation circuit T508 High-voltage transformer for primary charging Primary charging roller Photosensitive drum Amplifier DC bias control signal PDC_PWM DC voltage monitor signal PDC_S AC component current monitor signal PAC_S AC bias output signal PAC_OUT -5 PR_DC_ON J103 J203 -4 Microprocessor (Q900) Composite power supply PCB Serial communication Microprocessor (Q101) Figure 4-103 DC controller PCB COPYRIGHT © 1999 CANON INC.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-5 Main transformer T101 CHAPTER 4 IMAGE FORMATION SYSTEM Voltage separation circuit T508 High-voltage transformer for primary charging Primary charging roller Photosensitive drum Amplifier DC bias control signal PDC_PWM DC voltage monitor signal PDC_S AC component current monitor signal PAC_S AC bias output signal PAC_OUT -5 PR_DC_ON J103 J203 -4 Microprocessor (Q900) Composite power supply PCB Serial communication Microprocessor (Q101) Figure 4-103 DC controller PCB COPYRIGHT © 1999 CANON INC.
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... the level of the DC bias is switched by the DC bias ON signal (serial signal) generated by the cleaning bias from the transfer roller. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-7 Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor.... 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 DC bias. (See Table 4-102.) Reference: The ...
... the level of the DC bias is switched by the DC bias ON signal (serial signal) generated by the cleaning bias from the transfer roller. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 4-7 Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY Main motor.... 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 DC bias. (See Table 4-102.) Reference: The ...
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... T_FW_ON High-voltage transformer control signal CLK32K +24V T302 Transfer high-voltage transformer Photosensitive drum Transfer charging roller DC controller PCB Figure 4-105 Composite power supply PCB 4-8 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM D. Controlling the Transfer Roller Bias 1. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
... T_FW_ON High-voltage transformer control signal CLK32K +24V T302 Transfer high-voltage transformer Photosensitive drum Transfer charging roller DC controller PCB Figure 4-105 Composite power supply PCB 4-8 COPYRIGHT © 1999 CANON INC. CHAPTER 4 IMAGE FORMATION SYSTEM D. Controlling the Transfer Roller Bias 1. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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...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. d. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) To remove excess toner, a positive voltage is pressed. A current of ... the environment. Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer bias to the drum: < Timing > • While initial rotation is executed after the Copy Start key is pressed • Part of the period in which...
...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. d. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) To remove excess toner, a positive voltage is pressed. A current of ... the environment. Correcting the Transfer Bias Voltage Level (ATVC control) The machine automatically corrects the application voltage level of the transfer bias to the drum: < Timing > • While initial rotation is executed after the Copy Start key is pressed • Part of the period in which...
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...8226; Turning on and off the developing DC bias • Turning on and off the AC bias (turning on the photosensitive drum. When the photosensitive drum rotates and yet developing is not under way, about -500 VDC is used to control the voltage applied to the developing cylinder... while copies are being made. Controlling the Developing/Separation Static Eliminator Bias 1. CHAPTER 4 IMAGE FORMATION SYSTEM E. CANON PC800s/900s REV.0 AUG. 1999 ...
...8226; Turning on and off the developing DC bias • Turning on and off the AC bias (turning on the photosensitive drum. When the photosensitive drum rotates and yet developing is not under way, about -500 VDC is used to control the voltage applied to the developing cylinder... while copies are being made. Controlling the Developing/Separation Static Eliminator Bias 1. CHAPTER 4 IMAGE FORMATION SYSTEM E. CANON PC800s/900s REV.0 AUG. 1999 ...
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CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM Main transformer T101 High-voltage transformer for developing/static eliminator Developing DC bias detection circuit +5V T201 Static eliminator bias generation circuit + Photo sensitive drum Developing cylinder Static eliminator DC bias control signal BIAS_PWM DC bias monitor... density setting signal Copy density correction signal AE sensor PCB Control panel Density correction switch (SW101) DC controller PCB Figure 4-107 4-12 COPYRIGHT © 1999 CANON INC.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 4 IMAGE FORMATION SYSTEM Main transformer T101 High-voltage transformer for developing/static eliminator Developing DC bias detection circuit +5V T201 Static eliminator bias generation circuit + Photo sensitive drum Developing cylinder Static eliminator DC bias control signal BIAS_PWM DC bias monitor... density setting signal Copy density correction signal AE sensor PCB Control panel Density correction switch (SW101) DC controller PCB Figure 4-107 4-12 COPYRIGHT © 1999 CANON INC.
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...the scanning lamp Toner save mode or photo mode is set during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. SW101 Figure 4-108 If the machine is not equipped with a density correction switch (SW101), the image density ...changes in the sensitivity of the AE sensor during auto density correction and how the density adjusting lever is set . CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) The density correction switch (SW101) affects ... light images caused as by a change in the output of the photosensitive drum. CHAPTER 4 IMAGE FORMATION SYSTEM 4.
...the scanning lamp Toner save mode or photo mode is set during manual density adjustment. 4-14 COPYRIGHT © 1999 CANON INC. SW101 Figure 4-108 If the machine is not equipped with a density correction switch (SW101), the image density ...changes in the sensitivity of the AE sensor during auto density correction and how the density adjusting lever is set . CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) The density correction switch (SW101) affects ... light images caused as by a change in the output of the photosensitive drum. CHAPTER 4 IMAGE FORMATION SYSTEM 4.
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... J601 J107 -3 -2 AEREF +5V -2 -3 AE +24V + VR103 +5V +24V + VR102 (Q101) Developing cylinder 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) The AE mechanism...
... J601 J107 -3 -2 AEREF +5V -2 -3 AE +24V + VR103 +5V +24V + VR102 (Q101) Developing cylinder 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) The AE mechanism...
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... lamp Reflecting plate Lens shift detecting shaft Front side blanking lamp (front) Figure 4-121 Reflecting plate A B B A , , Photosensitive drum Non-image area in Reduce mode A: Position of the side blanking lamp in Direct and Reduce mode B: Position of the side blanking lamp... shaft. CHAPTER 4 IMAGE FORMATION SYSTEM G. Outline The machine is moved in relation to prevent adhesion 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...
... lamp Reflecting plate Lens shift detecting shaft Front side blanking lamp (front) Figure 4-121 Reflecting plate A B B A , , Photosensitive drum Non-image area in Reduce mode A: Position of the side blanking lamp in Direct and Reduce mode B: Position of the side blanking lamp... shaft. CHAPTER 4 IMAGE FORMATION SYSTEM G. Outline The machine is moved in relation to prevent adhesion 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...