Specifications

Flowcharts and TablesTroubleshooting
Table 14. Stairstepping/Vertical Lines Jagged or Shaky
Step Check Result Action
1 Is the laser/scanner
assembly properly seated
and making good contact
with the scanner
interconnect assembly?
No Reseat the laser/scanner assembly.
2 Is the scanner
interconnect assembly
properly seated and
making good contact with
the controller assembly?
No Reseat the scanner interconnect
assembly.
3 Does the problem appear
when you print a service
test page?
No
Ye s
Replace the I/O board.
Perform the first module exchange
listed below. If the problem persists,
reinstall the original module and
perform the next exchange:
• Replace the
laser/scanner assembly.
• Replace the controller
assembly.
Table 15. Horizontal Banding, Evenly Spaced Smudged
Black Lines Over Image
Step Check Result Action
1 Interrupt a print cycle and
inspect the
photosensitive drum.
Does the fault appear on
the drum?
Ye s
No
Replace the toner cartridge.
Replace the fuser assembly.