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Canon PC920 Service Manual
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Canon PC920 Service Manual
Also see for PC800 Series:
Service handbook
Table of content
Contents
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
Table Of Contents
I. FEATURES
II. SPECIFICATIONS
III. NAMES OF PARTS
B. Cross Section
IV. USING THE MACHINE
if jams occur frequently
VI. IMAGE FORMATION
basic operation
I. BASIC OPERATIONS
B. Outline of Electrical Circuitry
C. Basic Sequence of Operations
E. Inputs to and Outputs from the DC Controller
I. OPERATIONS
B. Varying the Reproduction Ratio
C. Lens Drive System
D. Scanner Drive System
II. EXPOSURE SYSTEM
outline of the scanner drive cable
image formation system
I. IMAGE FORMATION SYSTEM
B. Timing Chart for the Image Formation System
D. Controlling the Transfer Roller Bias
Separation Static Eliminator Bias
Originals
G. Controlling the Side Blanking Mechanism
DISASSEMBLY/ASSEMBLY
A. Cartridge
B. Transfer Charging Assembly
C. Blank Exposure
Table Of Contents
I. PICKUP/FEEDING SYSTEM
B. Controlling the Pickup Roller
C. Controlling the Movement of Paper
D. Detecting Jams
delivery delay jam
II. DISASSEMBLY/ASSEMBLY
A. Pickup Assembly
B. Multifeeder Assembly
removing the separation pad
C. Single-feeder Assembly
D. Feeding Assembly
E. Registration Roller Assembly
F. Delivery Assembly
B. Controlling the Fixing Temperature
Table Of Contents
II. POWER SUPPLY SYSTEM
B. Power Supply Circuit
the Composite Power Supply PCB
III. DISASSEMBLY/ASSEMBLY
A. External Covers
B. Control Panel
C. Copyboard Glass
D. Main Motor/Main Drive Assembly
E. Electrical System
Table Of Contents
A. Outline
B Basic Construction
C. Basic Operations
D. Detecting an Original
E. Pickup Operation
F. Delivery
G. Controlling the Pickup Motor
H. Controlling the Belt Motor
I. Detecting Original Jams
J. Power Supply
A. Removing the ADF
B. External Covers
C. Drive System
D. Feeding System
I. SELECTING A SITE
II. UNPACKING AND INSTALLATION
B. Placing Copy Paper
III. MOVING THE MACHINE
I. PERIODICALLY REPLACED PARTS
handling the cartridge
troubleshooting
INSPECTION
B. Points to Note for Servicing
II. STANDARDS AND ADJUSTMENTS
C. Electrical
checking the photointerrupters
III. TROUBLESHOOTING IMAGE FAULTS
C. Troubleshooting Image Faults
the back of the copy is soiled
the copy has a fixing fault
the copy has a blurred image
the copy is blank
the copy is solid black
IV. TROUBLESHOOTING MALFUNCTIONS
the scanner fails to move forward
the scanning lamp fails to turn on
the fixing heater fails to turn on
PROBLEMS
pickup assembly
B. Faulty Feeding
FUNCTIONS OF ELECTRICAL PARTS
B. Switches
C. Lamp, Heater, Motor, Etc
d. pcbs
e. adf
Check Pins by PCB
VII. SELF DIAGNOSIS
A. GENERAL TIMING CHART
B. SIGNALS AND ABBREVIATIONS
C. GENERAL CIRCUIT DIAGRAM
D. DC CONTROLLER CIRCUIT DIAGRAM
E. ADF CONTROLLER CIRCUIT DIAGRAM
CIRCUIT DIAGRAM
G. CONTROL PANEL CIRCUIT DIAGRAM
H. AE SENSOR CIRCUIT DIAGRAM
CHAPTER 3 EXPOSURE SYSTEM
COPYRIGHT
©
1999 CANON INC.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-16
Figure 3-306
Wind 1.5 times.
(black cable)
Wind 7.5 times.
(silver-colored cable)
2.
Outline of the Scanner Drive Cable
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This manual is suitable for:
PC800 Series
PC800S
PC860
PC880
PC890
PC900 Series
PC900S
PC920
PC921
PC940
PC941
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