Service manual

Troubleshooting
Samsung Electronics 4-29
NO
Black band?
The black
band has regular
interval?
Black band
is far about 95mm from
white band?
Problem of internal
contacts in OPC
-> Replace developer
The OPC is damaged under the
direct sunlight for around 5
minutes -> If the same problem
persists in 10 hours, replace
the developer
This occurs when no
Hsync/ at LSU
-> Replace LSU
94mm interval?
Heat roller is ruined
-> Replace the roller
The OPC is damaged due to
the irregular transfer voltage
of HVPS
-> Repair/replace HVPS
-> If the same problem persists,
replace the developer
Does it appear
at every 83mm at
specific place?
Problems of terminal contact,
transfer voltage supplying,
and transfer roller's due to the
charge roller is ruined (38mm)
-> Repair/replace HVPS,
developer
NO
NO NO
NO
YES
YES
YES
YES
Horizontal Band
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