Brother HL-4140CN Service Manual page 87

■ Error code 84
Jam Rear
Open the Back Cover and remove the jammed paper.
Paper jam at the rear section of the printer.
<User Check>
- Check if the paper is jammed. If jammed, remove it.
Step
1 Foreign object around paper
eject
2 Coming off of back flapper ASSY
3 Paper eject actuator
malfunction
4 Harness connection failure of
paper eject motor
5 Paper eject sensor PCB ASSY
failure
6 Paper eject motor failure
7 Paper eject ASSY failure
8 Engine PCB failure
9 Main PCB failure
Cause
2-56
Remedy
Remove the foreign object.
Re-assemble the back flapper ASSY.
Re-assemble the paper eject actuator.
Check the harness connection of the
paper eject motor and reconnect it.
Check the sensor performance following
the procedure described in
32". If any problem occurs, replace the
paper eject sensor PCB ASSY.
Replace the paper eject motor.
Replace the paper eject ASSY.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
"Function code
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