Brother HL-S7000DN Service Manual page 92

■ Error code 3801
Print Unable 38
Turn the power off and then back on again.
Error occurred in the external temperature sensor.
Error code 3802
Print Unable 38
Turn the power off and then back on again.
Error occurred in the external humidity sensor.
Step
1 External temperature/humidity
sensor harness connection
failure
2 Engine PCB failure
■ Error code 3A00
Print Unable 3A
Turn the power off and then back on again.
Communication error occurred between the engine and control on the main PCB.
Step
1 Main firmware or engine
firmware is old
2 Harness connection failure
between main PCB and engine
PCB
3 Engine PCB failure
4 Main PCB failure
■ Error code 3B00
Print Unable 3B
Turn the power off and then back on again.
Error occurred when main PCB ASSY is accessing to DRAM.
Step
1 Main PCB failure
Cause
Cause
Cause
2-64
Remedy
Reconnect the external tempareture/
humidity sensor harness.
Replace the engine PCB ASSY.
Remedy
Update the main firmware or engine
firmware.
Reconnect the harness between main
PCB and engine PCB.
Replace the engine PCB ASSY.
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
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