Canon LBP 2900 Printer Scanner Unit Error Fixed
Received Laser printer for repair, it is giving “Scanner Unit error” on the screen of the computer while giving printing command.
So this error is lead to suspect faulty area is…
1) Flexible Flat Cables OF ECU.
2) Power Board which gives power to ECU
3) ECU Board.
4) Scanner Unit Itself.
For detail photographs of the parts please refer to this link because Model is same as the printer I received for the repair. Opened the printer for visual inspection; here I found suspected parts are ECU Unit Cables.
Both cables are badly oxidized and copper trace contacts are not visible.
Cleaned Both the Cables using ink eraser rubber & then wiped using IPA…
After cleaning process I reassembled the printer for testing ……..
I took few printout & it works without any error.
This article was prepared for you by Yogesh Panchal who works as a Computer Hardware Engineer in Mumbai India.
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Note: You can check his previous repair articles on No Power In Calculator Repaired