Brother MFC-9840CDW, DCP-9045CDN Ghost, Horizontal lines, Downward fogging of solid color

Downward fogging of solid color

User Check

- Toner may be empty. Replace the toner cartridge with a new one.

Step	Cause	Check	Result	Remedy
1	Transfer HVPS	Is the problem solved after	Yes	Replace the transfer
	PCB failure	replacing the transfer		HVPS PCB ASSY.
		HVPS PCB ASSY?
2	Charge HVPS	Is the problem solved	Yes	Replace the charge
	PCB failure	after replacing the charge		HVPS PCB ASSY.
		HVPS PCB ASSY?
3	Engine PCB	Is the problem solved	Yes	Replace the engine PCB
	failure	after replacing the engine		ASSY.
		PCB ASSY?

Horizontal lines

User Check

- The paper tray ground terminal provided in the machine body may be dirty. Clean the contact with a dry cloth.

Step	Cause	Check	Result	Remedy
1	Dirt on charged	Are the electrodes on the	Yes	Clean both electrodes
	electrode	drum unit and machine
		body dirty?
2	Paper tray ground	Is the paper tray ground	Yes	Correct bending of
	terminal provided	terminal bent, which is		paper tray ground
	in machine body	provided in the machine		terminal.
		body?

Ghost

User Check

-Check the machine’s environment, conditions such as high humidity may cause this situation to occur.

-Check that the appropriate media type is selected in the printer driver.

- Replace the drum unit with a new one.

Step	Cause	Check	Result	Remedy
1	Transfer HVPS	Is the problem solved after	Yes	Replace the transfer
	PCB failure	replacing the transfer		HVPS PCB ASSY.
		HVPS PCB ASSY?
2	Charge HVPS	Is the problem solved	Yes	Replace the charge
	PCB failure	after replacing the charge		HVPS PCB ASSY.
		HVPS PCB ASSY?
3	Engine PCB	Is the problem solved	Yes	Replace the engine PCB
	failure	after replacing the engine		ASSY.
		PCB ASSY?

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