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Andrew RodriguezSep 3, 2025
Why is one color printing light on my Brother MFC-9010CN All in One Printer?
- JJohn MayerSep 3, 2025
If you observe a color being lighter than it should be on your Brother All in One Printer, it could be caused by dirt on the exposure drum electrode, develop roller electrode, or belt unit electrode. It may also be due to dirt on the LED array, lifting of the LED ASSY, or a toner/new sensor PCB failure. You can try cleaning the electrodes and wiping the dirt off the LED array with a clean, soft, lint-free cloth. If the LED ASSY is lifting, re-assemble it. If the problem persists, replace the toner cartridge of the appropriate color, check the harness connection of the toner/new sensor PCB ASSY of the appropriate color, or replace the toner/new sensor PCB ASSY of the appropriate color.