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5/2011
3-17
Phaser 4600/4620 Printer Service Manual
IQ15
Image Quality
Revision - Xerox Internal Use Only
IQ15 Background
There is toner contamination on all or part of the page. The contamination appears as a very
light gray dusting.
WARNING
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 image
includes background defects.
Y
N
Perform SCP 6 Final Actions.
Replace the Drum Cartridge and reprint the test print. The image includes background
defects.
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,
REP 9.1
.
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 image is
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,
REP 9.1
.
Continue with the procedure.
Replace the HVPS,
REP 1.4
, and print a test print. The image includes background
defects.
Y
N
Perform SCP 6 Final Actions.
Replace the MCU Board,
REP 3.4
. The image includes background defects.
Y
N
Perform SCP 6 Final Actions.
Replace the IP Board.
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Страница 122: ...5 2011 3 24 Phaser 4600 4620 Printer Service Manual IQS 4 IQS 5 Revision Xerox Internal Use Only Image Quality ...
Страница 276: ...5 2011 4 154 Phaser 4600 4620 Printer Service Manual REP 28 9 REP 28 10 Revision Xerox Internal Use Only Repairs ...
Страница 328: ...5 2011 6 2 Phaser 4600 4620 Printer Service Manual Revision Xerox Internal Use Only General Procedures Information ...
Страница 362: ...5 2011 7 2 Phaser 4600 4620 Printer Service Manual Revision Xerox Internal Use Only Wiring ...
Страница 376: ...5 2011 7 16 Phaser 4600 4620 Printer Service Manual WD 18 Revision Xerox Internal Use Only Wiring ...
Страница 378: ...5 2011 8 2 Phaser 4600 4620 Printer Service Manual Revision Xerox Internal Use Only Principles of Operation ...