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I got an issue with my printer mfp m4345 hp, when you turn it on and photocopy a few pages it's light amber orange. I checked the formatter board but there was no difference, I change scanner board PCB but also no change. The issue was that the scanner has a fun that blows air to cool the scanner system on the printer to but its outlet window always has a filter cotton which needs to replaced after awhile that the cool air brings dirt into the scanner camera hence you need to open the scanner system and clean the camera part.

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