Background Contamination - Xerox phaser 6250 Service Manual

Background Contamination

There is toner contamination on all or most
of the page. The contamination appears as a
very light gray dusting. The printer displays
no error code. Before using this procedure,
Ensure the TekColor correction is not set to
"None" in the printer's dialog box. Ensure
the customer is making less than 2,000
prints per day. Making more than 2,000
prints a day exceeds the duty cycle
specifications for the printer.
Note
Depending on the type of paper and environmental conditions, some light
amount of random background spotting (backgrounding) is normal. The
whiter and glossier the paper, the more noticeable it will be.
Troubleshooting Procedure
Step Check
1 Check the Imaging Unit, Fuser
Assembly and the Transfer Roller for
correct installation, damage or
contamination.
2 Inspect the surface of the Transfer
Roller for wast toner. The roller
should appear black and shiny. Is the
roller contaminated with waste
toner?
3 Does the image quality improve if the
Transfer Roller is replaced?
4 Replace the Imaging Unit, PL 9.1.3.
Does the image quality improve if the
Imaging Unit is replaced?
5 Replace the Fuser Assembly,
PL 8.1.1. Does image quality
improve if the Fuser is replaced?
6 Check the following pins to the
transfer roller contacts for continuity:
J5030 <=> Transfer Roller
J5020 <=> Transfer Roller
5-20
Yes
Replace or reinstall
the affected
component.
Replace the
Transfer Roller,
page 8-4
Complete
Complete
Complete
Go to Step 7.
Phaser 6250 Color Laser Printer Service Manual
S6200-285
No
Go to Step 2.
Go to Step 4.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Replace the defective
harness.