Brother MFC-L2732DW

Downward fogging of solid color

User Check

• Replace the toner cartridge with a new one.

Step	Cause	Remedy
1	High-voltage power supply PCB failure	Replace the high-voltage power supply PCB ASSY.
2	Main PCB failure	Replace the main PCB ASSY.

Horizontal lines

User Check

• This problem may disappear after printing multiple sheets of paper.
• Refer to <How to clean the drum unit> to remove the dirt from the exposure drum using a cotton applicator.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.

Step	Cause	Remedy
1	Dirty charge electrodes	Clean the electrodes of the drum unit and those of the machine.
2	Dirt on the exposure drum	Perform drum cleaning.
3	Scratch or dirt on the fuser unit	Replace the fuser unit.
4	High-voltage power supply PCB failure	Replace the high-voltage power supply PCB ASSY.

Ghost

User Check

• Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem.
• Check whether appropriate paper type is selected on the driver.
• Select “Improve Toner Fixing” in the driver.
• Replace the drum unit with a new one.
• Replace the toner cartridge with a new one.

Step	Cause	Remedy
1	Scratch or dirt on the fuser unit, or conductive leaf spring deformation	Replace the fuser unit.
2	High-voltage power supply PCB failure	Replace the high-voltage power supply PCB ASSY.

Fogging

User Check

• Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem.
• Check if the acid paper is not used.
• This problem may disappear after printing multiple sheets of paper.
• Replace the toner cartridge with a new one.
• Replace the drum unit with a new one.

Step	Cause	Remedy
1	Dirt on the electrodes of the toner cartridge and those of the machine	Clean the electrodes of the toner cartridge.
2	New toner sensor PCB failure	Replace the new toner sensor PCB ASSY.
3	High-voltage power supply PCB failure	Replace the high-voltage power supply PCB ASSY.
4	Main PCB failure	Replace the main PCB ASSY.

Note:
This problem tends to occur when the life of the drum unit or toner cartridge is expiring.