Phaser 6121MFP Service Manual 5-19
Print-Quality Troubleshooting
Black Spots
The background image of all copies includes black spots.
Initial Actions
Perform the initial actions listed on page 5-5.
Troubleshooting Reference Table
Applicable Parts Example Print
■ Scanner Unit, PL2.0.4
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 This defect can occur
when foreign material is
on the document glass.
The scanhead detects the
foreign material while
scanning, and the defect
appears as spots on the
copy output.
Thoroughly clean the
document glass. Does the
defect still occur?
Go to step 2. Complete.
2 Reseat all connectors and
cables between the
Scanner Unit and the
Image Processor Board,
and then make another
copy.
Does the defect still
occur?
Replace the Scanner
Unit (page 8-31).
Complete.
Chrysanthemum x morifolium
Random Spots
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