User Guide
Possible cause Recommended action(s)
(Continued)
The fuser setting is incorrect for the
media type.
Open the configure-device menu at the
control panel and change the fuser-
mode setting or select another media
type. See
Configure-device menu.
The transfer roller is damaged, has
finger oils on its surface, or is dirty or
worn.
Clean the transfer roller by using a dry,
lint-free cloth. Do not touch the transfer
roller with your fingers. If the problem
persists, replace the transfer roller. See
Transfer roller .
Poor high-voltage contact exists
between the power supply and the print
cartridge or transfer roller.
Inspect the contacts and clean them if
they are dirty. Replace them if they are
damaged.
The power supply is defective (the
transfer voltage is low).
Replace the power-supply assembly.
See
Power supply.
Table 7-24 Lines
Possible cause Recommended action(s)
A
A
A
A
A
B
B
B
B
B
C
C
C
C
C
a
a
a
a
a
c
c
c
c
c
b
b
b
b
b
Vertical lines (in the paper-path direction)
Circumfrential scars appear on the
photosensitive drum.
Replace the print cartridge.
Foreign materials are deposited on the
laser outlet of the printer or the laser
inlet of the cartridge.
Remove the foreign materials.
The print cartridge is not installed
correctly.
Remove the print cartridge and then
reinstall it. The top cover should close
completely when the print cartridge is
fully seated.
The print cartridge is defective. Replace the print cartridge.
The fuser roller is worn or dirty. Process a printer cleaning page. See
Running the cleaning page manually.
Several pages might be required if the
fuser is very dirty. If the problem
persists, replace the fuser. See
Fuser.
The static-eliminator teeth (just beyond
the transfer roller) are contaminated or
defective.
Clean the static-eliminator teeth by
using a small brush or compressed air.
Replace the assembly if it is damaged.
Light is leaking into the printer. Make sure that all of the covers are in
place. Move the printer away from
windows that face the outdoors.
Table 7-23 Drop outs and character voids (continued)
Image-formation troubleshooting 387