Specifications

4
Flowcharts and TablesTroubleshooting
Table 16. Black Horizontal Lines, Sharp and Well-Defined
Step Check Result Action
1 Does the problem appear
on normal prints, but
definitely not on a service
test page?
Ye s
No
Replace the I/O board.
Replace the fuser assembly.
Replace the laser/scanner assembly.
Table 17. Bad Registration
Step Check Result Action
1 Try printing with known-
good paper. Does the
problem persist?
No Problem solved.
2 Remove the excess paper
from the cassette tray or
manual-feed slot. Does
the problem persist?
No Problem solved.
3 Perform the registration
adjustment (see
“Registration
Adjustment”). Does the
problem persist?
No
Ye s
Problem solved.
Perform the first module exchange
listed below. If the problem persists,
reinstall the original module and
perform the next exchange:
• Clean or replace the pickup roller as
needed.
• Replace the pickup motor.
• Replace the arm registration
assembly if broken.
• Replace the controller assembly.