5-26 Phaser 6128MFP Service Manual
Print-Quality Troubleshooting
Random Spots
There are spots of toner randomly scattered across the page.
Initial Actions
• Check the paper transfer path.
• Ensure there are no debris on the transfer path.
Allow the Fuser to cool before starting the procedure.
Troubleshooting Reference Table
Applicable Notes Example Print
■ Laser Unit Kit (PL4.1.99)
■ Imaging Unit (PL4.1.21)
■ Transfer Belt (PL6.1.7)
■ IP Board (PL10.6.6)
■ MCU Board (PL10.7.7)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Inspect the paper transfer path.
Is there any contamination on the
paper transfer path?
Clean the
paper path
(refer to
“Cleaning” on
page 7-2), then
go to step 2.
Go to step 3.
2 Is the image printed correctly? Complete Go to step 3.
3 1. Run the Contamination Check test
print: Service Mode > Test Print >
Contamination Chk
2. Compare any spots with the Pitch
Chart (page 5-51).
Do any of the spots appear at
regular intervals, and do the
intervals match the chart?
Replace the
corresponding
parts.
Go to step 4.
Random Spots
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