Ghosting; Non-Uniform Image - Xerox Phaser 3500 Service Manual

Image Defect

Ghosting

Image from the previous page
prints on consecutive pages.
.
s3500-047

Non-Uniform Image

The Line darkness and solid-
area density image vary across
the print.
.
s3500-048
Phaser® 3500 Laser Printer Service Manual
Possible Causes
Operating environment
■
Media (paper)
■
Print Cartridge
■
Transfer Roller
■
Fuser assembly
■
Incorrect high-voltage
■
outputs.
Print Cartridge
■
Print Cartridge grounding
■
Unstable high voltage
■
output
Transfer Roller
■
contamination
Laser Window or optic
■
contamination
3-9
image-quality Troubleshooting
Solutions
1. Printer is installed in specified
environment?
2. Verify that paper meets
printer specifications. Print 20
to 30 pages using
recommended paper.
3. Determine ghosting pitch and
replace the corresponding
assembly.
NOTE: See Repeating
Defects on page 3-3 for defect
pitch.
4. Replace Power Supply Board.
1. Ensure that Cartridge is not
out of toner. Inspect Drum for
deterioration or
contamination.
2. If defective, replace the Print
Cartridge.
3. Verify Print Cartridge ground.
Check continuity between
cartridge ground contact and
frame ground. Ensure that
drum contact is clean and
undamaged.
4. Inspect the Transfer Roller
spring tension and bearing
contacts.
5. Remove Laser assembly,
clean window, or replace
assembly as necessary.
6. Replace Power Supply Board.