5-22 Phaser 6300/6350 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.
Initial Actions
â– Verify the Imaging Unit and Transfer Roller are not at or near end of life.
Waste toner especially from the Transfer Roller can cause random spots to
appear on the page.
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 Reference Table
Applicable Parts Example Print
â– Imaging Unit, PL6.1.1
â– Fuser, PL5.1.1
â– Transfer Roller, PL5.1.4
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Print the Repeating Defects page from
the Troubleshooting ->Print Quality
Problems menu.
Do the defects correspond to a
maintenance Item?
See "Repeating Defects" on page 5-4.
Replace the
maintenance item
indicated.
Go to Step 2.
2
Clean the Imaging Unit rollers
(
page 7-3).
Does the image quality improve?
Complete Go to Step 3.
s6300-115