CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
4-18
3.13 The back of the copy is soiled/Soiled edge.
Exposure system
1) Turn off the main power switch while paper is moving in the feeding
assembly. At this time, is the back of the paper soiled?
NO:
Go to step 5.
Transfer guide assembly
2) Does the back of paper soiled after replacing the drum that caused a
black line or the like?
YES: Clean the transfer guide.
Transfer guide bias, Transfer guide
3) During copying, is the voltage between the transfer guide (+) and the
machine side plate (-) about -50 to -650V?
NO:
•
Check the transfer guide bias connector.
•
Clean the transfer guide.
•
Clean the bottom of the developing assembly.
Developing assembly, Registration roller, Drum cleaner
4) Does the problem occur at intervals of about 50 mm?
YES:
•
Clean the registration roller.
•
Clean the transfer guide.
•
Check the developing assembly for leakage of toner.
•
Clean the bottom of the developing assembly.
NO:
•
Clean the feeding assembly.
•
Clean the transfer guide.
•
Check the drum cleaner assembly fro leakage of waste toner.
Transfer charging roller
5) Execute cleaning of the roller in user mode. Is the problem corrected?
YES: End.
Fixing assembly
6) Run COPIER>OPTION>BODY>FIX-CLN. Fixed?
No: If the fixing roller cleaner is soiled, replace it
YES: End.
