CHAPTER 3 IMAGE TROUBLESHOOTING
3-7
C. Troubleshooting by Image Fault
1. The copy is too light (halftone areas only).
2. The copy is too light (dark areas as well).
3. The copy is too light (extremely light overall).
Cause
Step
Checks
YES/NO
Remedies
Lens, Reflecting plate,
Intensity sensor
1
Clean the lens, reflecting plate,
and intensity sensor.
Is the problem corrected?
YES
End.
2
Press the Copy Start key, and
switch the copier OFF in the
middle of operation; then, open
the top cover.
Is the toner image on the pho-
tosensitive drum more or less
normal before transfer?
Be sure to check quickly to
protect the drum against light.
NO
Go to step 5.
Transfer charging
roller
3
Is the transfer charging roller
normal?
NO
1. Re-attach the charging
roller.
2. Replace the charging
roller.
Copy paper
4
Try paper fresh out of package.
Is the copy density higher?
YES
1. The paper may be
moist; advise the user
on the correct method
of storage.
2. Advise the user that the
use of non-recom-
mended paper may not
bring about the best
results.
Transfer
Cartridge
5
Replace the cartridge.
Is the problem corrected?
YES
End.
DC controller/DC
power supply PCB
NO
Replace the DC controller/
DC power supply PCB.
