Brother HL-4140CN Service Manual page 93

■ Error code 8E
Registration
Registration failed. Press Go, and try again.
Error in the adjustment of inter-color position alignment result when implementing it.
<User Check>
- Check if there is a scratch, dirt or the like on the belt unit. If there is, replace the belt unit
with a new one.
Step
1 Harness connection failure of the
registration mark L PCB ASSY or
registration mark R PCB ASSY
2 Registration mark sensor holder
ASSY failure
3 Main PCB failure
■ Error code 8F
Registration
Registration failed. See Troubleshooting chapter in User's Guide.
Detection of abnormal value of registration sensor sensitivity when implementing adjustment
of inter-color position alignment.
This error does not usually occur in the normal use. The conceivable causes are noise around
the installation site, fluctuation of the power supply voltage, and failures in the software.
<User Check>
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Main PCB failure
Cause
Cause
2-62
Remedy
Check the harness connection of the
registration mark sensor holder ASSY and
reconnect it.
Replace the registration mark sensor
holder ASSY.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
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