Brother MFC7880DN

User Check

• Check that the paper is set in the manual feed slot correctly.
• Flip over the paper in the manual feed slot or rotate the paper 180°.
• Adjust the paper guide according to the paper size.
• Check that multiple sheets of paper are not set.
• Check that the thickness of the paper is 60 to 163 g/m2.

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