Partial Blank Image (Periodic) - Samsung ML-4500/XEV Service Manual

Troubleshooting

Partial Blank Image (Periodic)

Is it not over
the guaranty life of dot
counter?
YES
Is toner
cartridge installed
correctly?
YES
Is it regular
interval of 47.1mm?
NO
Is it regular
interval of 75.4mm, 31.6mm
or 37.7mm?
NO
Replace the fuser
(50.2mm, 45.2mm or exit roller
4-18
NO
Replace the toner cartridge
NO
Install the toner cartridge
correctly
YES
Transfer roller
works properly?
OK after
replacing the transfer
roller?
- Clean the contact point of
transfer roller.
- Check the output of high
voltage terminal and adjust or
replace if required.
YES
Replace the toner cartidge
NO
YES
YES
NO
Clean the TR holder, the TR
gear OPC roller gear and the
transfer roller
END
Samsung Electronics