Brother HL-3040CN Service Manual page 114

■ Error code FE
-
Detection of incorrect measurement value of density sensor sensitivity calibration
< >
User Check
- Check if the 4-color drum units are properly installed in the product.
Step
1 Belt unit failure
2 Harness connection failure of
registration mark L PCB ASSY
3 Registration mark relay PCB
failure
4 Main PCB failure
5 Registration mark L PCB failure
■ Error code FF
Unusable Device
Remove the Device. Turn the power off and back on again.
Overcurrent error of wireless LAN PCB
Step
1 Wireless LAN PCB failure
2 Main PCB failure
Cause
Cause
3-50
Remedy
Replace the belt unit.
Check the harness connection of the
registration mark L PCB ASSY and
reconnect it.
Replace the registration mark relay PCB
ASSY.
Replace the main PCB ASSY.
Replace the registration sensor holder
ASSY.
Remedy
Replace the wireless LAN PCB ASSY.
Replace the main PCB ASSY.
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