4-3-4 Dark Image
NO
'Dark' selected
via RCP?
Change to
'Normal' and test.
Same at 'Normal'?
(
Works
correctly with
-500V of developing
Bias voltage?
Works
correctly after
replaced LSU?
The power of LSU is set
high or internal problem.
-> Replace LSU or adjust
volume.
Samsung Electronics
Download Service Manual And Resetter Printer at http://printer1.blogspot.com
YES
NO
YES
Repair or replace the defective
NO
component.
YES
NO
YES
(
END
Toner over supply due to the
adjustment fault of metering
blade in developer.
-> Replace developer.
Without Cartridge
Normal
Troubleshooting
4-7