4. Alignment and Troubleshooting
Service Manual
ML-331x/371x series
4-46
Samsung Electronics
6) Dark Image or a Black Page
Description : The printed image is dark.
Dark selected
via RCP?
Change to
Normal and test
Works correctly
with -450V of 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 toner cartridge
-> Replace toner cartridge
NO
YES
YES
YES
YES
To Next Page
Loading...
