Brother DCP-L8400CDN Service Manual page 124

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Paper jam at the MP tray
< User Check >
- Check if the paper is loaded into the MP tray correctly.
- Turn back the paper loaded in the MP tray or change the orientation of the paper by 180°.
- Adjust the paper guide corresponding to the paper size.
- Check if too much paper is loaded in the tray.
- Check if the thickness of the paper is 60 to 163 g/m
- Fan the stack of paper well and reinsert the papers into the paper tray.
Step
1 Foreign object around MP tray
2 MP registration front actuator
coming off
3 Connection failure of the MP
registration front sensor PCB
harness
4 MP paper empty/registration
front sensor failure
5 Main motor failure
6 Paper feed unit failure
7 Fuser unit damaged
8 Main PCB failure
■
Paper jam at the paper feeding section at the center of the machine
< User Check >
- Check if the paper is loaded into each paper tray correctly.
- Turn back the paper loaded in each paper tray or change the orientation of the paper by 180°.
- Adjust each paper guide in accordance with the paper size.
- Check if too much paper is loaded in the tray.
- Check if the thickness of the paper is 60 to 105 g/m
- Fan the stack of paper well and reinsert the papers into each paper tray.
- Check that the belt unit is properly set.
- Replace the drum unit.
- Replace the belt unit.
Step
1 Foreign object inside machine
2 Eject actuator coming off
3 Fuser cover installation failure
4 Connection failure of the eject
sensor PCB harness
5 Eject sensor failure
6 Fuser drive gear Z25 damaged
7 Main motor or process motor
failure
8 Fuser unit failure
9 Main PCB failure
Cause
Remove the foreign object.
Re-assemble the MP registration front
actuator.
Reconnect the MP registration front
sensor PCB harness.
Replace the MP paper empty/registration
front sensor PCB ASSY.
Replace the process drive unit.
Replace the paper feed unit.
Replace the fuser unit.
Replace the main PCB ASSY.
Cause
Remove the foreign object.
Re-assemble the eject actuator.
Re-assemble the fuser cover.
Reconnect the eject sensor PCB harness.
Replace the eject sensor PCB ASSY.
Replace the fuser drive gear Z25.
Replace the process drive unit.
Replace the fuser unit.
Replace the main PCB ASSY.
2-94
2
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Remedy
2
.
Remedy
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