Specifications

3
Flowcharts and TablesTroubleshooting
White Vertical Lines (Continued)
Step Check Result Action
5 Remove the fuser assembly
and heater roller. Are there
scratches on the fuser
heater roller?
Yes Replace the fuser heater roller or the
fuser assembly.
6 Replace the I/O board.
Does the print quality
improve?
Yes Problem solved.
Table 21. Black Horizontal Lines
Step Check Result Action
1 Replace the toner cartridge.
Does the print quality
improve?
Yes Problem solved.
2 Are the high-voltage
contacts making good
contact with the toner
cartridge?
No Clean the contacts or replace the
high-voltage contact assembly.
3 Replace the transfer roller.
Does the print quality
improve?
Yes Problem solved.
4 Remove the fuser assembly
and inspect the fuser heater
roller. Are there scratches
on the fuser heater roller?
Yes Replace the fuser heater roller or the
fuser assembly.
5 Connect the multimeter
between connectors P15-7
and 15-1 on the DC
controller board. Does the
voltage measure +24 VDC
when you switch on the
printer?
No Go to Table 11, Power Supply Failure
(+24 VDC).