What to do if the toner lamp is lit on my Brother HL-1040 after installing a new toner cartridge?
If the toner lamp is lit after installing a toner cartridge in your Brother Printer, replace the cartridge with a new one.
Why is my Brother HL-1040 printing too light?
If your Brother Printer is printing too lightly, it could be due to several reasons: * Toner sensing failure on the printer side, which may require cleaning the toner sensor and checking its connection. * Toner sensing failure on the toner cartridge side, which suggests replacing the toner cartridge. * Drum connection failure, which needs cleaning the contact electrodes in both the printer body and on the drum unit. * High-voltage power supply PCB failure, panel sensor PCB or main PCB failure, or scanner unit failure, all requiring replacement of the respective parts.
How to fix a Brother HL-1040 that is printing too faintly?
If your Brother Printer is printing too faintly, consider the following: * Ensure the printer is on a flat surface. * Remove and gently shake the drum unit horizontally. * Clean the scanner window with a dry tissue. * If problems persist, the scanner unit may need replacement.
What causes my Brother HL-1040 to print all black?
If your Brother Printer is printing all black, it could be due to: * Corona failure, which may require replacing the drum unit or cleaning the terminals in the printer and on the drum. * A harness connection issue between the scanner unit and the panel sensor PCB, which would need checking. * Failure of the high-voltage power supply PCB, main PCB, or panel sensor PCB, all requiring replacement.
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