image-quality Troubleshooting
Phaser® 3500 Laser Printer Service Manual
3-10
Black Spots/Marks
There are spots and/or marks of
toner on the printed side of the
page.
■ Print Cartridge
■ Fuser Assembly
■ Paper transports
■ Transfer Roller
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.
Spot or Vertical Deletions
Solid areas are marked with
irregular white spots.
.
■ Damp paper
■ Foreign matter
contamination of printer
components
■ Print Cartridge
■ 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.
Horizontal Bands
Dark bands appearing in the
horizontal direction.
■ Print Cartridge
■ Fuser Assembly
■ Transfer Roller
■ Incorrect high-voltage
outputs
■ Laser Assembly
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.
Character Defects
Garbled print, missing, repeating
or scrambled characters are
problems relating to font data or
character generation.
■ Loose/defective interface
cables; cable not within
specification.
■ Optional DIMM memory
■ Main Board
1. Inspect cable connections;
verify that cables meet
specified requirements.
2. Replace optional DIMM
memory.
3. Replace Main Board.
Image Defect Possible Causes Solutions
s3500-051
s3500-05
To Next Page
Loading...
