Repeating And/Or Random Spots - Xerox 6250DT - Phaser Color Laser Printer Service Manual

Repeating and/or Random Spots

Spots of toner are randomly scattered across the
page or at a fixed repeating interval.
Note
Depending on the type of paper and
environmental conditions, some light
amount of random background spotting
(backgrounding) is normal. The whiter and
glossier the paper, the more noticeable it
will be.
Troubleshooting Procedure
Step Check
Print the Repeating Defects Page
1
from the Troubleshooting<->
Quality Problems
Do the defects correspond to a
Routine Maintenance Item?
See "Repeating Defects" on
page 5-3.
Replace the Imaging Unit, PL 9.1.3.
2
Does the image quality improve if the
Imaging Unit is replaced?
Replace the Transfer Roller,
3
PL 8.1.12. Does the image quality
improve if the Transfer Roller is
replaced?
Replace the Fuser Assembly,
4
PL 8.1.1. Does the image quality
improve if the Fuser is replaced?
Replace the SUB-HVPS, page 8-87.
5
Does the image quality improve if the
SUB HVPS is replaced?
Replace the Laser Unit, page 8-68.
6
Does the image quality improve if the
Laser Unit is replaced?
Print-Quality Troubleshooting
Print
Menu.
Yes
Replace the
indicated Routine
Maintenance Item.
Complete
Complete
Complete
Complete
Complete
S6200-276
No
Go to Step 2.
Go to Step 3.
Go to Step 4.
Go to Step 5.
Go to Step 6.
Replace the Engine
Control Board,
page 8-107.
5-19