Samsung SCX-5935FN Service Manual page 129

Horzontal Band
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Black band?
YES
The black
band has regular
interval?
YES
94.3mm interval?
YES
The OPC is damaged due to
the irregular transfer voltage
of HVPS
-> Repair/replace HVPS
-> If the same problem persists,
replace the drum cartridge
Service Manual
Alignment & Troubleshooting
Black band
NO
is far about 94.3mm from
white band?
Problem of internal
contacts in OPC
-> Replace the drum
cartridge
This occurs when no
NO
Hsync/ at LSU
-> Replace LSU
Does it appear
NO
at every 83.6mm at
specific place?
Heat roller is ruined
-> Replace the roller
4-78
The OPC is damaged under the
NO
direct sunlight for around 5
minutes -> If the same problem
persists in 10 hours, replace
the drum cartridge
Problems of terminal contact,
transfer voltage supplying,
NO
and transfer roller's due to the
charge roller is ruined (38.3mm)
-> Repair/replace HVPS,
YES
drum cartridge
Samsung Electronics