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