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Troubleshooting
4-2-7 Black Dot
Is it regular
interval of 37.7mm?
YES
The problem occured
since the obstacles
stuck to charge roller.
-> Replace developer
and C/R.
4-2-8 Horizontal Band
Black band?
YES
The black
band has regular
interval?
YES
94mm interval?
YES
The OPC is damaged due to
the irregular transfer voltage
of HVPS.
-> Repair/replace HVPS.
-> If the same problem persists,
replace the developer.
4-8
When taking
NO
out the cartridge,
toner leaks?
YES
Toner leaks and toner
material dropped onto
the paper. -> Replace the
developer.
Black band
NO
is far about 10mm from
white band?
Problem of internal
contacts in OPC.
-> Replace developer.
This occurs when no
NO
Hsync/ at LSU.
-> Replace LSU.
Does it appear
NO
at every 56.1mm at
specific place?
Heat roller is ruined.
-> Replace the roller.
Bad image
NO
removes by
scratching?
Check toner is stuck onto
the P/R or H/R in fuser.
-> Clean it or replace.
The OPC is damaged under the
NO
direct sunlight for around 5
minutes. -> If the same problem
persists in 10 hours, replace
the developer.
Problems of terminal contact,
transfer voltage supplying,
NO
and transfer roller's due to the
charge roller is ruined (38mm).
-> Repair/replace HVPS,
YES
The problem
NO
randomly occured
due to the toner
fallen. -> Clean the
machine.
YES
developer.
Samsung Electronics
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