Samsung ML-1665 Service Manual page 73

2) Vertical White Line
Description : White vertical voids in the image.
cartridge roller and blade. (In case the life of the
toner cartridge has been expired, white
foreign substances are on the window
substances are on the OPC Drum.
Service Manual
Alignment and Troubleshooting
1. Foreign matter stuck onto the
window of internal lenses
of LSU mirror.
2. Foreign matter or
toner particles between the toner
lines or light image occur in
front of the image.)
3. It may occur when Burr and
of the toner cartridge frame.
4. If the fuser is defective,
voids occur periodically at the
top of a black image.
5. It may occur when foreign
Foreign matter stuck onto the
window : Clean the LSU window
with recommended cleaner(IPA)
Clean the window with a clean
cotton swab.
Replace the toner cartridge.
No 3. : Remove the foreign matter
and burr of the exposure window.
(toner cartridge)
No. 4. : Open the front cover and
check ribs that corresponds to the
position of the voids. Remove if
found.
If the problems are not solved,
replace the toner cartridge.
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Samsung Electronics