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FY8-23AV-000
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3-14
CHAPTER 3 IMAGE TROUBLESHOOTING
Contents
Main
IMPORTANT
COPYRIGHT 1998 CANON INC. Printed in Japan Imprim au Japon
CONTENTS
CHAPTER 1 MAINTENANCE AND INSPECTION
CHAPTER 2 STANDARDS AND ADJUSTMENTS
CHAPTER 3 IMAGE TROUBLESHOOTING
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
CHAPTER 5 TROUBLESHOOTING PAPER FEED PROBLEMS
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
Page
Page
CHAPTER 1 MAINTENANCE AND INSPECTION
D. Notes on Cartridge
Page
Page
1-5
E. Image Adjustment Basic Procedure
<Pre-Checks> <Optimum Density Adjustment>
1-6
F. Points to Note
CHAPTER 2 STANDARDS AND ADJUSTMENTS
A. Mechanical
B. Electrical
Page
Page
Page
Page
CHAPTER 3 IMAGE TROUBLESHOOTING
A. Making Initial Checks
Page
Page
Page
Page
Page
3-7
C. Troubleshooting by Image Fault
3-8
4. The copy has uneven density (darker at front). 5. The copy has uneven density (lighter at front).
6. The copy is foggy (overall).
3-9
3-10
12. The copy has white spots (cross feed direction).
13. The back of the copy is soiled.
3-11
14. The copy has faulty fixing.
3-12
18. The copy has a blurred image.
20. The copy has poor sharpness (focus).
19. The copy is foggy (cross feed direction).
3-13
21. The copy is blank.
22. The copy is solid black.
Page
4-1
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
2. E0
A. Troubleshooting Malfunctions
1. (self diagnosis; PC400/FC200)
4-2
3. E2
4. E6
4-3
5. E9
6. AC power is absent.
4-4
7. Pick-up fails.
8. The scanning lamp fails to go ON.
4-5
9. The main motor fails to rotate.
10. The copyboard fails to move.
4-6
11. (paper feeding normally)
12. (at time of jam)
13. The fixing heater fails to operate.
Page
5-2
1. Pick-Up Assembly
2. Separation/Feeding Assembly
5-3
3. Fixing/Delivery Assembly
5-4
B. Feeding Faults
1. Double Feeding
2. Wrinkles
6-1
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
A. Sensors and Solenoids
Figure 6-1A
6-2
B. Switches
Figure 6-1B
6-3
C. Lamp, Heater, Motor, and Others
Figure 6-1C
6-4
D. Printed Circuit Board (PCB)
Figure 6-1D
E. Variable Resistors (VR) and Check Pins by PCB
Page
CHAPTER 7 SELF DIAGNOSIS
Page
A-1
APPENDIX A. General Timing Chart
PC400/FC200 General Timing Chart (A4, 2 copies)
A-2
PC420/430/FC220 General Timing Chart (A4, 2 copies)
B. Signals/Abbreviations List
Page
A-5
100V
Color Code
M1
C. General Circuit Diagram
PC400/FC200 GENERAL CIRCUIT DIAGRAM
A-6
PC420/430/FC220 GENERAL CIRCUIT DIAGRAM
Color Code
drive solenoid
Thermal fuse 2
D. Special Tools Table
A-8
E. Solvents/Oils Table
A-9
F. Specifications
A-10
