Xerox PHASER 6121MFP - Gradation Reproduction Failure

5-20 Phaser 6121MFP Service Manual
Print-Quality Troubleshooting
Gradation Reproduction Failure
The overall image becomes less and less clear with each copy.
Initial Actions
Perform the initial actions listed on page 5-5.
• Verify the media settings are correct at the Control Panel.
Troubleshooting Reference Table
Applicable Parts Example Print
■ Laser Unit, PL4.0.2
■ Imaging Unit, PL4.0.13
■ High Voltage Board,
PL13.0.6
■ Toner Cartridge (See
consumables parts list)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Print Test Pattern 3
(page 6-32).
Is the error present in only
one color?
Replace the toner
cartridge associated
with the defect. If the
defect persists, go to
step 2.
Go to step 2.
2 Inspect the Imaging Unit.
Is the outside of the unit
dirty?
Clean the unit. If
problem persists, go
to step 3.
Go to step 3.
3 Inspect the laser window.
Is the outside of the
surface dirty?
Carefully clean the
surfaces. If the
problem persists, go
to step 4.
Go to step 4.
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