Print Quality Service Checks; Background Service Check - Lexmark C720 Service Manual

5024-001

Print Quality Service Checks

Background Service Check

The Background is smeared due to the toner spread.
FRU
1 Toner Cartridge.
2 Check Developer Bias Pole
3 OPC Belt Cartridge.
4 High Voltage Power Supply
Unit (HVU).
Action
Too small charging amount in the
development process.
Insufficient contact of the developer
roller's bias pole.
Confirm whether the developer bias
pole is deformed or not.
Life or failure of the belt cartridge.
Failure of the high voltage power
supply unit (HVU).
Diagnostic Information
2-83