Specifications

3
Flowcharts and TablesTroubleshooting
Ghosting (Continued)
Step Check Result Action
5 Remove the top cover, side
covers, rear cover, I/O
board mount, and power
supply switch lever.
Remove the high-voltage
contact assembly and
check the continuity on all
the high-voltage contacts.
Do you find continuity on all
the high-voltage contacts?
No Replace the high-voltage contact
assembly.
6 Replace the DC controller
board. Does the print
quality improve?
Ye s
No
Problem solved.
Replace the toner cartridge sensor
and high-voltage power supply cable.
If the problem persists, replace the
high-voltage power supply.
Table 24. Bad Fusing
Step Check Result Action
1 Check the paper in the
paper cassette tray for
dampness. Is the paper
damp?
Yes Replace the paper.
2 Is the fuser assembly
properly installed and
secure?
No Reinstall the fuser assembly.
3 Install a known-good fuser
assembly. Does the print
quality improve?
Yes Problem solved.
4 Install a known-good power
supply. Does the print
quality improve?
Yes Problem solved.
5 Install a known-good DC
controller. Does the print
quality improve?
Yes Problem solved.