Brother HL-4140CN Service Manual page 58

■ Error code 24
Print Unable 24
Turn the power off and then back on again.
Internal temperature sensor error.
Step
1 Harness connection failure of
internal temperature sensor
2 Internal temperature sensor
failure
3 Main PCB failure
■ Error code 25
Print Unable 25
Turn the power off and then back on again.
Develop drive motor error.
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
■ Error code 26
Print Unable 26
Turn the power off and then back on again.
Belt drive motor error.
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
Cause
2-27
Remedy
Check the harness connection of internal
temperature and reconnect it.
Replace the internal temperature sensor.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
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