No Paper Is Fed From Manual Feed Slot; Multiple Sheets Of Paper Are Fed - Brother DCP-7080 Service Manual

4.2.2 No paper is fed from manual feed slot

<User Check>
• Check that the paper is set into the deepest part of the manual feed slot.
• Check that multiple sheets of paper are not set in the manual feed slot.
• Check that the thickness of the paper is 60 to 163 g/m
• Check that the paper tray is not set as the pick-up tray.
• Check that the paper tray is closed correctly.
Step
Connection failure of the main
1
motor flat cable
Connection failure of the
2
registration clutch harness
Registration front actuator
3
coming off
Connection failure of the
4 registration front sensor PCB
harness
HVPS flat cable breakage
5
Registration clutch failure
6
Registration front sensor failure Replace the registration front/rear actuator
7
Connection failure of the HVPS
8
flat cable
Main motor failure
9
Damaged fuser unit
10
High-voltage power supply PCB
11
failure
Main PCB failure
12

4.2.3 Multiple sheets of paper are fed

<User Check>
• Check that there is not too much paper set in the paper tray.
• Check that the paper is set in the paper tray correctly.
• Flip over the paper in the paper tray or rotate the paper 180°.
• Check that the thickness of the paper is 60 to 105 g/m
• Flip through the paper and reset it in the paper tray.
Step
Abrasion of the separation pad
1
Cause
Reconnect the main motor flat cable.
Reconnect the registration clutch harness.
Reattach the registration front actuator.
Reconnect the registration front sensor PCB
harness.
Replace the HVPS flat cable.
Replace the registration clutch.
holder ASSY.
Reconnect the HVPS flat cable.
Replace the main motor.
Replace the fuser unit.
Replace the high-voltage power supply PCB
ASSY.
Replace the main PCB ASSY.
Cause
Replace the PF kit.
2-59
2
.
Remedy
2
.
Remedy
Confidential