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20 July 2005
4.6 PRINTOUT PROBLEMS
4.6.1 INCORRECT PRINT POSITION
Description: The print job starts when the paper is not in the correct position
Cause
1.
Defective feed sensor actuator
4.6.2 VERTICAL BLACK LINE AND BAND
Description. Straight thin or dark black vertical line shows in the printout
Cause
1.
Damaged developer roller, or defective
doctor/cleaning blade in the toner
cartridge.
2.
Charge roller surface is scratched.
3.
Damage to the surface of the transfer
roller
4.6.3 VERTICAL WHITE LINE
Description. White vertical lines show. In this condition, parts of the image get
blocked.
Cause
4.
Window or internal lenses of LSU mirror
are contaminated.
5.
Unwanted particles inside the toner
cartridge or low toner.
6.
Unwanted particles, contamination or burr
on the edge of the toner cartridge
window.
7.
Fusing unit is defective if voids
periodically show on the top of black
images.
8.
OPC drum is contaminated.
9.
Depression or deformation on the surface
of the transfer roller.
1.
Replace the defective actuator
1.
Replace the toner cartridge and test
again.
2.
Replace the toner cartridge and test
again.
3.
Replace the transfer roller and test again.
4.
Clean the LSU window with isopropyl
alcohol. Replace the LSU if there is
unwanted particles inside.
5.
Replace the toner cartridge.
6.
Clean the exposure window.
7.
Check the ribs of the fusing unit and
remove unwanted particles if found.
8.
Replace the toner cartridge.
9.
Replace the transfer roller.
4-11
PRINTOUT PROBLEMS
Solution
Solution
Solution
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