5–5
TROUBLESHOOTING FEEDING FAULTS
B. Feeding Faults
1
Double Feeding
Cause
Separation pad
Spring
Remedy
Replace the separation
pad.
Push up the separation
pad, and try replacing the
spring.
Yes/No
YES
NO
Checks
Is the separation pad deformed or
worn?
Step
1
Remedy
Check the pick-up
assembly. Check the
registration roller.
The copy paper may be
moist; advise the user on
the correct method of
storing paper.
Advise the user to use
recommended paper.
Clean it with solvent.
Adjust the pressure.
Try replacing the upper
roller or the lower roller.
Yes/No
YES
YES
NO
YES
NO
YES
Checks
Turn OFF the power while copy
paper is moving through the
feeding assembly. Is the copy
paper at this time wrinkled?
Further, is it moving askew?
Try fresh paper. Is the problem
corrected?
Is the paper of a type recom-
mended by Canon?
Is the paper guide soiled with toner
or foreign matter?
Is the lower roller pressure (nip)
within specification?
Cause
Pick-up assembly
Copy paper
Paper guide
Lower roller
pressure
Upper roller,
Lower roller
Step
1
2
3
4
5
2
Wrinkles
Fixing assembly
Содержание NP6621
Страница 4: ...ii ...
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Страница 48: ...3 2 IMAGE FAULTS ...
Страница 49: ...3 3 IMAGE FAULTS NOT USED ...
Страница 50: ...3 4 IMAGE FAULTS B Image Fault Samples not available ...
Страница 80: ...4 16 TROUBLESHOOTING MALFUNCTIONS ...
Страница 98: ...6 8 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS D PCBs Figure 6 603 1 2 3 4 5 6 7 8 9 10 11 12 ...
Страница 108: ...6 18 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS 4 Fixing Heater Driver PCB Figure 6 611 J402 1 J401 W1 W2 ...
Страница 134: ...A 4 APPENDIX ...
Страница 135: ...A 5 APPENDIX C GENERAL CIRCUIT DIAGRAM not available ...
Страница 136: ...A 6 APPENDIX ...
Страница 144: ...A 14 APPENDIX ...