Phaser 3140/3155/3160 Printer Service Manual
5-23
Print-Quality Troubleshooting
Black/White Spot
Dark or blurry spots appear on the page. If black spots occur periodically, the
rollers in the Print Cartridge may be contaminated with dust or debris. If faded
areas or voids occur in a black image at intervals of 75.3 mm, or black spots occur
elsewhere, check the OPC drum surface.
Initial Actions
•
Check Print Cartridge life.
•
Ensure there is no debris on the OPC drum of the Print Cartridge.
Troubleshooting Reference Table
Applicable Parts
Example Print
■
Transfer Roller, PL1.0.8
■
Print Cartridge, PL1.0.12
Troubleshooting Procedure Table
Step
Actions and Questions
Yes
No
1
Check the paper path.
Is there any debris or toner
contamination on the paper path?
Clean the
paper path.
Go to step 2.
2
Print the Print Cleaning Page several
times (page 4-2).
Does the error still occur?
Go to step 3.
Complete.
3
Check for spots at regular intervals.
■
Charge roller: 37.5 mm interval
■
OPC drum: 75.3 mm interval
Is there repeating spots on the
page?
Replace the
Print Cartridge
(page 8-6).
Go to step 4.
4
Check the Print Cartridge for
damage.
Is the Print Cartridge damaged?
Replace the
Print Cartridge
(page 8-6).
Go to step 5.
Random Spots
