Brother MFC7880DN

User Check

• Check that the paper is set in the paper tray correctly.
• Flip over the paper in the paper tray or rotate the paper 180°.
• Adjust the paper guide according to the paper size.
• Check that there is not too much paper set in the paper tray.
• Check that the thickness of the paper is 60 to 105 g/m2.
• Flip through the paper and reset it in the paper tray.
• Replace the toner cartridge with a new one.
• Replace the drum unit with a new one.

Step	Cause	Remedy
1	Foreign object around the paper tray	Remove the foreign object.
2	Paper dust cleaning roller attachment failure	Reattach the paper dust cleaning roller.
3	Registration front actuator coming off	Reattach the registration front actuator.
4	Connection failure of the registration front/rear sensor PCB harness	Reconnect the registration front/rear sensor PCB harness.
5	Connection failure of the registration clutch harness	Reconnect the registration clutch harness.
6	Connection failure of the HVPS flat cable	Reconnect the HVPS flat cable.
7	HVPS flat cable breakage	Replace the HVPS flat cable.
8	Registration front sensor failure	Replace the registration front/rear actuator holder ASSY.
9	Registration clutch failure	Replace the registration clutch.
10	Main motor failure	Replace the main motor.
11	High-voltage power supply PCB failure	Replace the high-voltage power supply PCB ASSY.
12	Damaged gears in the paper feeding system	Replace the main frame L ASSY.
13	Damaged fuser unit	Replace the fuser unit.
14	Main PCB failure	Replace the main PCB ASSY.