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November 29, 1999
COPY QUALITY TROUBLESHOOTING
7-11
Trouble-
shooting
7.1.11 FAINT COPIES
Possible Causes (Scanner)
•
Dirty shading plate and/or exposure glass
•
Dirty optical mirrors
•
SBU defect
Action:
•
Clean the white roller in the ADF.
•
Clean the optical mirrors
•
Replace the optical unit or SBU.
Possible Causes (Printer)
•
Poor drum sensitivity.
•
Dirty laser optic components.
•
Incorrect development/ transfer bias
•
Low toner
•
Low fusing temperature
H306T512.WMF
H306T504.WMF