Black Spots/Marks; Spot Or Vertical Deletions; Horizontal Bands; Character Defects - Xerox Phaser 3500 Service Manual

Image Defect

Black Spots/Marks

There are spots and/or marks of
toner on the printed side of the
page.
s3500-051

Spot or Vertical Deletions

Solid areas are marked with
irregular white spots.
.
s3500-052

Horizontal Bands

Dark bands appearing in the
horizontal direction.

Character Defects

Garbled print, missing, repeating
or scrambled characters are
problems relating to font data or
character generation.
Phaser® 3500 Laser Printer Service Manual
Possible Causes
Print Cartridge
■
Fuser Assembly
■
Paper transports
■
Transfer Roller
■
Damp paper
■
Foreign matter
■
contamination of printer
components
Print Cartridge
■
Transfer Roller
■
Print Cartridge
■
Fuser Assembly
■
Transfer Roller
■
Incorrect high-voltage
■
outputs
Laser Assembly
■
Loose/defective interface
■
cables; cable not within
specification.
Optional DIMM memory
■
Main Board
■
3-10
image-quality Troubleshooting
Solutions
1. Replace the Print Cartridge.
NOTE: See Repeating
Defects on page 3-3 for defect
pitch.
2. Inspect /clean/replace Fuser
Assembly as necessary.
3. Clean contamination from
paper transports and exit
rollers.
4. Clean or replace the Transfer
Roller.
1. Replace paper.
2. Check printer components for
surface contamination or
paper scraps. Clean as
required.
3. If deletions repeat every 94
mm, replace Print Cartridge.
NOTE: See Repeating
Defects on page 3-3 for defect
pitch.
4. Remove the Transfer Roller
and clean (dust off). If
deletions repeat every 56
mm, replace Transfer Roller.
1. Replace the Print Cartridge.
2. Inspect /clean/replace Fuser
Assembly as necessary.
3. Inspect the Transfer Roller
spring tension and bearing
contacts.
4. Replace Power Supply Board.
5. Replace Laser Assembly.
1. Inspect cable connections;
verify that cables meet
specified requirements.
2. Replace optional DIMM
memory.
3. Replace Main Board.