Background - Xerox Phaser 4500 Service Manual

Background

There is toner contamination on all or part of the page. The contamination appears as
a very light gray dusting.
Initial Actions
Inspect the printer paper path for items, such as
staples, paper clips, and paper scraps.
Check the installation of the Print Cartridge.
Check that the Print Cartridge ground contacts
(on the right side of the Print Cartridge and in
the Print Cartridge Right Side Guide in the
printer) are clean.
Ensure the machine covers are in place and fit
well so no outside light can enter the machine.
Background Troubleshooting Procedure
Step Actions and Questions
1
1. Install a new Print Cartridge.
2. Print a test print.
Is the background gone?
2 1. Generate a test print and switch
OFF the printer power halfway
through the print cycle.
2. Carefully remove the Print
Cartridge and inspect the toner
image on the drum just before the
transfer area (Transfer Roller).
Are the undeveloped areas of the
drum clean and without
background?
3 1. Check the 150-Feeder Assembly
ground.
2. Remove the Print Cartridge.
3. Check the connection between
the 150-Feeder Assembly metal
part and printer frame metal part.
Is the 150-Feeder Assembly
grounded?
5-42
Yes
Problem solved.
Go to step 3.
Go to step 4.
Phaser 4500 Service Manual
s4500-047
No
Go to step 2.
Go to High-Voltage
Power Supply (HVPS)
"HVPS/Engine Logic
Board" on page 4-35.
Remove the150-
Feeder Assembly and
install again for the
correct ground.