8-5
Samsung Electronics
Chapter 8. Troubleshooting
Traninung Manual
8.2 Solution of Image Problem
Cause
Sequence of Treatment
Driver Installation Problem.
Toner cartridge contacts dirty or not making
good contact or empty Toner Cartridge
(when printing a single color image)
ITB cartridge contacts dirty or not making
good contact or Faulty ITB unit
LSU cable harness plugs not fitted properly
or faulty LSU.
Toner transfer problem
Try printing a Demo Page.
Check that the operating system driver was
installed correctly.
Check and clean the toner contacts.
Re-seat the Toner Cartridge.
Replace the Toner cartridge
Check and clean the ITB contacts.
Re-seat the ITB Unit.
Replace ITB Unit
Check the connectors on the LSU Unit and
main PWA are properly inserted.
Replace the LSU Unit, cables or MAIN PWA
as required
Check all HV contacts and cables.
Replace the HVPS.
- No Image
Cause
Sequence of Treatment
OPC Drum BIAS contacts dirty or not mak-
ing good contact.
Charge Voltage of the OPC Drum is unstable.
Clean Drum contacts..
Replace the OPC Drum.
Replace the HVPS Board.
- Completely Black Image
Cause
Sequence of Treatment
Contamination of the internal mechanism of the
toner cartridge
OPC Drum surface contaminated or damaged.
ITB Unit belt is contaminated or damaged.
Fuser Unit is contaminated.
Replace the Toner Cartridge.
Replace the OPC Drum.
Replace the ITB Unit Belt.
Clean or replace the Fuser Unit.
- White Spots / Black Spots / Colored Spots
