Samsung Electronics
Service Manual
Troubleshooting
7-8
Cause Sequence of Treatment
If the of Toner Cartridge is bad
If the alignment betweem the OPC and PTB
Units is not carrect.
Uneven contact between OPC and PTB or
between PTB and T2 roller.
Check or replace the Toner Cartridge.
Re-install the Toner Cartridge and PTB Units.
Re-install or replace the PTB Unit.
Check T2 roller, solenoid and cam operation.
- Deterioration of Printing Quality for Specific Color.
Cause Sequence of Treatment
Uneven contact between OPC and PTB or
between PTB and T2 roller.
Uneven color may occur when a toner
cartridge has just been installed.
Re-install or replace the PTB Unit.
Check T2 roller, solenoid and cam operation.
Make test printing a couple of times.
- Uneven Color Density
Cause Sequence of Treatment
Moisture or wet paper.
Creases in paper.
Fault occurs in the MPF Tray Printing only.
Ensure paper is stored properly and is not damp.
Check paper storage conditions.
1) Creases : Replace the Guide Input.
2) Replace the Fuser Unit.
3) Check OPC, Drum, Toner Cartridge and PTB
Unit for contamination and replace as required.
Replace the MPF Tray Unit.
- Whited out area
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