3-8
CHAPTER 3 IMAGE TROUBLESHOOTING
4. The copy has uneven density (darker at front).
5. The copy has uneven density (lighter at front).
6. The copy is foggy (overall).
Cause
Step
Checks
YES/NO
Remedies
Scanner
1
Clean the scanning lamp,
reflecting plate, and lens.
Is the problem corrected?
YES
End.
Cartridge, Scanning
lamp
2
Press the Copy Start key, and
switch the copier OFF in the
middle of operation; then, open
the top cover.
Does the toner image on the
photosensitive drum before
transfer have uneven density?
YES
1. Replace the cartridge.
2. Replace the scanning
lamp unit.
Transfer charging roller
NO
Check the transfer charg-
ing roller.
Cause
Step
Checks
YES/NO
Remedies
Scanner
1
Clean the scanning lamp,
reflecting plate, and lens.
Is the problem corrected?
YES
End.
Scanning lamp,
Developing bias
2
Is continuity present between
photosensitive drum PCB and
grounding spring?
YES
1. Check if the scanning
lamp goes ON normally.
2. Check the developing
bias.
Grounding spring
NO
Check to make sure if the
grounding spring is prop-
erly attached in front of the
cartridge.
Содержание FC200
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