Xerox Phaser 4500, Service Manual

Page: 244 / 537

Print-Quality Troubleshooting 5-21
Vertical Deletions
A vertical band in the process direction (direction of paper travel) where the image is
missing or extremely light.
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.
■
Ensure there are no obstructions in the laser
path.
■
Check that rollers and other components in the paper path are clean and
unobstructed.
Vertical Deletions Troubleshooting Procedure
Step Actions and Questions Yes No
1 1. Load fresh, dry paper.
2. Print a test print.
Is the problem still present?
Go to step 2. Problem solved.
2 1. Install a new Print Cartridge.
2. Print a test print.
Is the problem still present?
Go to step 3. Problem solved.
3 Inspect the laser beam path between
the Laser Assembly and the Drum.
Is the laser beam path free of
obstructions? Go to step 4. Remove any
obstructions from the
laser beam path.
4 Inspect the paper path, between
feed and exit, for contamination or
obstructions.
Is the paper path free of
obstructions? Go to step 5. Remove obstructions
or contamination from
the paper path.
5 Inspect the Transfer Roller Assembly
for contamination and wear.
Is the Transfer Roller free of
contamination and wear? Go to step 6. Replace the Transfer
Roller Assembly
(page 8-55).
s4500-040