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5–2
TROUBLESHOOTING FEEDING FAULTS
Cause
Cassette
Copy paper
DC controller
PCB, Pick-up
clutch
Pick-up
roller
Registration
roller drive
assembly
Registration
roller,
Vertical path
roller
Copy paper
Pick-up
roller
Step
1
2
3
4
5
6
7
8
9
10
11
Yes/No
NO
NO
YES
YES
YES
NO
YES
NO
NO
YES
YES
NO
Remedy
Go to step 8.
Set the cassette.
Check the inside of the
cassette for foreign matter.
Replace the copy paper.
Advise the user on the
correct method of storing
copy paper.
Advise the user to use
recommended paper.
See “Pick-up operation fails.”
Replace the pick-up roller.
See “Pick-up operation fails.”
See “The registration roller
fails to rotate.”
Replace the roller which is
deformed or worn.
Advise the user to use
recommended paper.
Check the pick-up roller for
wear and deformation.
Checks
Does the jam occur when the paper is
picked up from the cassette?
Is the cassette set in the machine
properly?
Try a different cassette. Is the problem
corrected?
Is the copy paper curled or wavy?
Try Canon-recommended paper. Is
the problem corrected?
Does the pick-up roller of the selected
cassette holder rotate during copying
operation?
Is the pick-up roller deformed or worn?
Does the main motor start to rotate
when paper is fed manually?
Does the registration roller operate
normally?
Is the registration roller or the vertical
roller deformed or worn?
Try recommended paper. Is the
problem corrected?
1
Pick-Up Assembly
Содержание NP6621
Страница 4: ...ii ...
Страница 8: ...vi ...
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 ...