Brother HL-L9300CDW Service Manual page 111

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Paper jam at the LT paper tray unit
< 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 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 105 g/m
- Fan the stack of paper well and reinsert the papers into the paper tray.
- Replace the toner cartridge with a new one.
- Replace the drum unit with a new one.
Step
1 Foreign object around each
paper tray
2 Foreign object around paper path
of paper tray 1
3 T1/LT paper dust cleaning roller
installation failure
4 Registration front actuator
coming off
5 Connection failure of the
registration front/rear sensor
PCB harness
6 Connection failure of the LT
registration sensor PCB harness
7 Connection failure of the LT relay
PCB harness
8 LT relay PCB failure
9 Fuser drive gear Z25 damaged
10 Main motor failure
11 Paper feed unit failure
12 Fuser unit damaged
13 Main PCB failure
Cause
2-91
2
.
Remedy
Remove the foreign object.
Remove the foreign object.
Re-assemble the T1/LT paper dust
cleaning roller.
Re-assemble the registration front
actuator.
Reconnect the registration front/rear
sensor PCB harness.
Reconnect the LT registration sensor PCB
harness.
Reconnect the LT relay PCB harness.
Replace the LT relay PCB ASSY.
Replace the fuser drive gear Z25.
Replace the process drive unit.
Replace the paper feed unit.
Replace the fuser unit.
Replace the main PCB ASSY.
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