Brother HL-4140CN Service Manual page 119

■ Paper fails to be supplied from the MP tray (Error code 27, etc)
<User Check>
- Check if the Tray Use setting is fixed to other tray.
- Check if the paper is loaded into the MP tray correctly.
- Check if the thickness of the paper is 60 to 163 g/m
Step
1 Operation failure of the actuator
of the MP paper empty sensor
2 Harness connection failure of
PF drive motor
3 MP paper pick-up roller worn out
4 MP paper empty sensor failure
5 MP sector solenoid failure
6 PF drive motor failure
7 Engine PCB failure
8 Main PCB failure
Cause
2-88
2
.
Remedy
Uninstall and reinstall the actuator of the
MP paper empty sensor.
Check the harness connection of the
PF drive motor and reconnect it.
Replace the MP paper feeding kit.
Replace the MP paper empty/registration
front sensor PCB ASSY.
Replace the MP sector solenoid.
Replace the PF plate ASSY.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
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