Vertical Streaks - Xerox Phaser 4500 Service Manual

Horizontal Deletions Troubleshooting Procedure (Continued)
Step Actions and Questions
9 Replace in order until the problem is
solved:
HVPS/Eng Logic PWB
(page 8-89)
Print Cartridge Right Side Guide
(page 8-58)
Transfer Roller Assembly
(page 8-55)
Laser Assembly (page 8-46)
Fuser Assembly (page 8-54)
Registration Clutch (page 8-112)
Main Motor Assembly (page 8-69
Gear Assembly Housing
(page 8-71)

Vertical Streaks

Extraneous dark lines/bands in the process direction (in the direction of paper travel).
Initial Actions
Check that the paper supply is dry and fresh.
Inspect the printer paper path for foreign items,
such as staples, paper clips, and paper scraps.
Check installation of the Print Cartridge.
Check that the Print Cartridge ground contacts
(on the right side of the Print Cartridge and in
the Print Cartridge Right Side Guide in the
printer) are clean.
Check that the paper is within specifications.
Inspect the paper path, between the feed and exit points, for contamination or
obstructions.
Print-Quality Troubleshooting
Yes No
s4500-042
5-25