Iq15 Background - Xerox Phaser 4620 Service Manual

IQ15 Background

There is toner contamination on all or part of the page. The contamination appears as a very
light gray dusting.
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
Initial Actions
• Check media type settings are correct.
• Check that the paper is clean, dry, and meets specifications.
• Verify the Toner Cartridge is a Xerox manufactured part with adaquate life remaining. If a
non-Xerox Toner Cartridge is being used, this could be the problem.
• Check that the Drum Cartridge contacts are clean.
• Ensure the covers are in place and no outside light enters the printer.
Figure 1 Background defect example
Procedure
Check the paper condition. Load new, dry recommended paper, and print a test print. The
image includes background defects.
Y N
Perform SCP 6 Final Actions.
Remove the Drum Cartridge, clean the electrical contacts, then print a test print. The
includes background defects.
Y N
Perform SCP 6 Final Actions.
Replace the Drum Cartridge and reprint the test print. The
defects.
Revision - Xerox Internal Use Only
Phaser 4600/4620 Printer Service Manual
WARNING
image includes
Y N
Perform SCP 6 Final Actions.
Remove the Transfer Roller and check for surface contamination or excessive wear. The
Transfer Roller is good.
Y N
Replace the Transfer Roller,
Print a test print. While the print is printing, turn off system power. Remove the Drum Cartridge
and check the image formed on the drum right before the Transfer Roller. The
poorly forrmed, faint and difficult to read.
Y N
Check the image formed on the drum, right after the Transfer Roller. The image is com-
pletely transferred to the paper
Y N
Replace the Transfer Roller,
Continue with the procedure.
Replace the HVPS, REP
defects.
Y N
Perform SCP 6 Final Actions.
Replace the MCU Board,
Y N
Perform SCP 6 Final Actions.
Replace the IP Board.
image
background
5/2011
3-17
REP 9.1.
REP 9.1.
1.4, and print a test print. The image
REP 3.4. The image includes background defects.
image is
includes background
Image Quality
IQ15