COPY QUALITY TROUBLESHOOTING 14 June, 2002
4-12
Action:
1. Print a test pattern, and open the cover in the middle of printing.
2. Check to see if the toner on the paper at the entrance of the fusing unit appears
faint.
• If it does, check or replace the fusing lamp, thermistor, and PSU.
• If it does not, go to step 3.
3. Check to see if the toner on the drum looks faint.
• If it does, go to step 4.
• If it does not, check the contacts between the transfer bias terminals and
power pack.
4. Check all the contacts between the development bias terminals.
• If it does not, try replacing the cartridge.
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