Black Spot - Samsung ML-4600/XET Service Manual

Troubleshooting

Black Spot

Is it regular
interval of 37.7mm?
YES
Perform the OPC
cleaning using
the control panel
buttons.
Does the same
problesm
persist?
NO
END
4-14
NO Is it regular
interval of 75.4 mm?
NO
When taking
out the cartridge,
toner leaks?
YES
Toner leaks and toner
material dropped onto
the paper -> Replace the
developer
YES
Remove obstacles
YES
stuck on OPC
drum's surface
Bad image
NO
removes by
scratching?
YES
Check toner is stuck onto
the P/R or H/R in fuser
-> Clean it or replace
The problem occured
since the obstacles
stuck to charge roller
-> Replace toner cartridge
The problem
NO
randomly occured
due to the toner
fallen -> Clean the
machine
Samsung Electronics