5-14
Phaser 3140/3155/3160 Printer Service Manual
Print-Quality Troubleshooting
Background Contamination
There is toner contamination on all or most of the page. The contamination
appears as a very light gray dusting. The Print Cartridge is designed to print 2,000
sheets at 5% coverage. If prints typically are below 5% coverage, background
contamination can occur.
Initial Actions
•
Check the paper transfer path.
•
Ensure there is no debris in the transfer path.
Troubleshooting Reference Table
Applicable Parts
Example Print
■
Power Supply Board, PL1.0.1
■
Transfer Roller, PL1.0.8
■
Print Cartridge, PL1.1.12
Troubleshooting Procedure Table
Step
Actions and Questions
Yes
No
1
Check the paper condition.
Is the paper dry, a recommended
type, and loaded in the correct
position?
Go to step 2.
Replace the
paper.
2
Print out the Supplies Information
Report (page 4-2), and check usage
patterns.
Does the typical print have less than
5% coverage?
Go to step 3.
Go to step 4.
3
Check the Print Cartridge. Is the
Print Cartridge at or near end of life?
Replace the
Print Cartridge
(page 8-51).
Go to step 4.
4
Check the Transfer Roller movement.
Does the Transfer Roller rotate
smoothly?
Go to step 5.
Clean the
Transfer Roller
bushings.
Background Contamination
