4-8
Samsung Electronics
Troubleshooting
Is it regular
interval of 38mm?
The problem occured
since the obstacles
stuck to charge roller.
-> Replace developer
and C/R.
When taking
out the cartridge,
toner leaks?
Toner leaks and toner
material dropped onto
the paper. -> Replace the
developer.
Bad image
removes by
scratching?
Check toner is stuck onto
the P/R or H/R in fuser.
-> Clean it or replace.
The problem
randomly occured
due to the toner
fallen. -> Clean the
machine.
NO
NO
NO
YES
YES
YES
4-2-7 Black Dot
NO
Black band?
The black
band has regular
interval?
Black band
is far about 10mm 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 56.1mm 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
4-2-8 Horizontal Band
Содержание ML-5000A
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Страница 87: ...Joint Board ML 5000A G 7 15 Samsung Electronics Schematic Diagrams ...
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Страница 92: ...7 8 Switch ML 5000A G 7 20 Samsung Electronics Schematic Diagrams ...
Страница 93: ...7 9 PTL ML 5000A G 7 21 Samsung Electronics Schematic Diagrams ...
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