DC252 Yellow background on copies only

[CopierTechofOmens]

Scan001.PDFScan001(1).PDF

Copies have yellow background no visible yellow image. Prints come out fine, just fine.

Ran all setups which complete without error.

Updated system software, reset NVM, cleaned all connections, cables, Replaced ROS, Developer Housing, and BP PWB

[InterfaceP]

Preform an Auto Gradation for starts.

[CopierTechofOmens]

All adjustments performed according to manual

[adriansto]

Did you performed the IIT/IPS tests pattern ?

[CopierTechofOmens]

Yes those also have yellow backgroundScan001(3).PDF

[adriansto]

Try another chart test 82Exxxx.
Never seen a CCD so uncalibrated

[CopierTechofOmens]

It's also not the CCD (Lens Assembly)

[zuojin168]

This like yellow charging bar (drum)
If change the yellow drum unit also appeared the same problem,
Check the drum unit at the back of the charging part (spring)

[InterfaceP]

Curious to know if you got it figured out.

[CopierTechofOmens]

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The correct answer was ESS PWB. Thanks for playing.