3. It may occur due to dirty or
foreign substances are on the window
of the developer frame.
4. If the fuser is defective,
voids occur periodically at the top
of a black image.
2. Foreign material or
toner particles between the toner
cartridge roller and blade. (In case the life of the
toner cartridge has been expired, white
lines or light image occur in
front of the image.)
1. Foreign material stuck onto the
window of internal lenses
of LSU mirror.
Foreign material stuck onto the
window : Clean the LSU window
with recommended cleaner (IPA)
Clean the window with a clean
cotton swab.
Replace the toner cartridge and
try to print out.
Clean the exposure window.
(Developer cartridge)
1. Open the front cover and check
ribs that corresponds to the
position of the voids.
Remove if found.
2. If the problems are not solved,
replace the developer cartridge.
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