3–14
IMAGE FAULTS
Checks
Is faulty fixing occurring in the feed
direction of the paper?
Does the fixing roller heater (H1) go
ON immediately after the copier is
switched ON?
Is the nip width within the standard?
Yes/No
YES
NO
NO
YES
Step
1
2
3
Cause
Upper and
Lower
developing
rollers
Fixing roller
heater (H1)
Lower
fixing roller
pressure
Copy paper
Remedy
Check the scratches on the
upper and lower fixing rollers.
Refer to the sub-section
"Fixing roller heater does not
operate."
Adjust the lower fixing roller
pressure.
Check if the recommended
paper is being used. if the
results are satisfactory when
the recommended paper is
used,instruct the user to use
it.
14
The copy has a fixing fault.
Summary of Contents for NP6621
Page 4: ...ii ...
Page 8: ...vi ...
Page 48: ...3 2 IMAGE FAULTS ...
Page 49: ...3 3 IMAGE FAULTS NOT USED ...
Page 50: ...3 4 IMAGE FAULTS B Image Fault Samples not available ...
Page 80: ...4 16 TROUBLESHOOTING MALFUNCTIONS ...
Page 134: ...A 4 APPENDIX ...
Page 135: ...A 5 APPENDIX C GENERAL CIRCUIT DIAGRAM not available ...
Page 136: ...A 6 APPENDIX ...
Page 144: ...A 14 APPENDIX ...