This is known as laser scanner contamination and will require servicing. You can try running calibrations under the system setup menu/print quality/calibrate color/calibrate now. run a couple of these. You can also try an nv ram
Try doing a hard or reset or nvram:
1. Turn the printer off
2. Hold down the right arrow and the cancel button
3. Reboot the printer while holding the buttons and hold until permanent storage is displayed. Let go of the buttons and wait for the ready message on the display.
Good Luck,
Al
[email protected]
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