14 June, 2002 COPY QUALITY TROUBLESHOOTING
4-3
Trouble-
shooting
4.1.3 DIRTY BACKGROUND
Possible Cause (Scanner)
• Scanner shading correction error
Action:
1. Clean the shading white plate.
2. Replace the contact image sensor if necessary.
Possible Cause (Printer)
• Poor drum sensitivity.
• The charge is incorrectly applied.
• The hot roller is dirty.
Action:
1. Try replacing the cartridge.
2. Check to see if the hot roller surface is dirty.
• If it is, clean the roller.
• If not, go to step 3.
3. Check to see if all the charge bias terminals and the cartridge.
• If they are, check or replace the power pack.
• If not, fix the connections.
H310T502.WMF
H310T503.WMF