November 29, 1999
COPY QUALITY TROUBLESHOOTING
7-5
Trouble-
shooting
7.1.5 VERTICAL BLACK LINES
Possible Cause (Scanner)
•
Dirt or dust on the exposure glass and/or optical mirror(s).
•
Dirty white plate in the ADF.
•
Defective SBU.
Action:
1. Clean the exposure glass and the shading white plate.
2. Clean the optical mirrors in the optical unit.
3. Replace the optical unit or SBU.
Possible Cause (Printer)
•
Damaged cleaning blade.
•
Dirty hot roller stripper(s).
Action:
1. Replace
the
cartridge.
2. Clean the hot roller strippers.
H306T503.WMF
H306T505.WMF