Brother HL-L8250CDN Service Manual page 70

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Error code 3801
Print Unable 38
Turn the power off and then back on again.
Temperature error occurred in the external temperature/humidity sensor.
Error code 3802
Print Unable 38
Turn the power off and then back on again.
Humidity error occurred in the external temperature/humidity sensor.
Step
1 Connection failure of the
high-voltage power supply PCB
harness
2 External temperature/humidity
sensor failure
3 Main PCB failure
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Error code 3A00
Print Unable 3A
Turn the power off and then back on again.
Error occurred in the communication between the controller in the main PCB and engine.
Step
1 Main PCB failure
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Error code 4000
Drum End Soon
-
Number of the drum unit rotations reaches the upper limit soon.
Error code 4200
Replace Drum
-
Number of the drum unit rotations has reached the upper limit. (Printing is not stopped.)
< User Check >
- Prepare a new drum unit.
Step
1 Main PCB failure if the error code
remains after replacing with a
new drum unit and resetting the
drum counter
Cause
Cause
Cause
2-47
Remedy
Reconnect the high-voltage power supply
PCB harness.
Replace the high-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
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