H
hensondonnaAug 22, 2025
Why is my Brother HL-820 Printer printing too dark?
- JJessica CervantesAug 23, 2025
There are several reasons why your Brother Printer might be printing too dark. It could be due to: * A soiled corona wire, in which case you should clean it using the wire cleaner. * Corona contact failure, which requires cleaning both electrodes. * A drum unit failure, which requires replacing the drum unit with a new one. * Failure of the high-voltage power supply PCB, panel sensor PCB, or main PCB, all of which would need replacing.