Xerox PHASER 6121MFP, Service Manual

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5-14 Phaser 6121MFP Service Manual
Print-Quality Troubleshooting
White or Colored Lines and Bands in Feed Direction
Vertical lines or bands in the output indicate problems in the feed direction.
Initial Actions
Perform the initial actions listed on page 5-5.
Troubleshooting Reference Table
Applicable Parts Example Print
■
Scanner Unit,
PL2.0.4
■
Imaging Unit,
PL4.0.13
■
Fuser, PL11.0.18
■
Transfer Roller,
PL7.1.10
■
Laser Unit,
PL4.0.2
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Print Test Pattern 3 (see
page 6-32).
Does the defect occur on
the printed output? The problem is in the
print image system.
Go to step 4. The problem is in the
Scanner system. Go
to step 2.
2 This defect often occurs
when foreign material
(paper dust, toner, or
other material) deposits
on the document glass.
The scanhead detects the
foreign material while
scanning, and the defect
appears as streaks or
spots on the copy output.
Thoroughly clean the
document glass.
Does the defect still
occur? Go to step 3. Complete.
Vertical Blank Lines
Chrysanthemum x morifolium
Vertical Stripes
Chrysanthemum x morifolium