Dark Image - Samsung ML-920 Service Manual

Dark Image

Digital Printer
Digital Printer
Digital Printer
Digital Printer
Digital Printer
NO
Normal and test
Same at Normal?
with -300V of Bias
The power of LSU is set
high or internal problem
-> Replace LSU or adjust
volume
Samsung Electronics
Dark selected
via RCP?
YES
Change to
NO
YES
Works cor
NO
voltage?
YES
Works
NO
correctly after
replaced LSU?
YES
END
Repair or replace the defective
component
Toner over supply due to the
adjustment fault of metering
blade in developer
-> Replace developer
Troubleshooting
4-22