Brother HL-4040CN Service Manual page 32

Error code 35
Print Unable 35
Turn the power off and then back on again.
NVRAM failure on Engine PCB
Step
1
Engine PCB failure
Error code 36
Print Unable 36
Turn the power off and then back on again.
Transfer HVPS PCB failure
Step
1 Harness connection failure of
transfer HVPS PCB ASSY
2 Transfer HVPS PCB ASSY
failure
3 Engine PCB failure
Error code 37
Print Unable 37
Turn the power off and then back on again.
Belt unit temperature sensor failure
Step
1 Belt unit temperature sensor
harness connection failure
2 Transfer HVPS PCB unit
failure
3 Engine PCB failure
Cause
Replace the engine PCB ASSY.
Cause
Check the two harness connections between the
transfer HVPS PCB and registration relay PCB,
and the two ones between the registration relay
PCB and engine PCB. Then reconnect them.
Replace the transfer HVPS PCB ASSY.
Replace the engine PCB ASSY.
Cause
Check the harness connection between the belt
unit temperature sensor and registration relay
PCB, and the one between the registration relay
PCB and engine PCB. Then reconnect them.
Replace the transfer HVPS PCB unit.
Replace the engine PCB ASSY.
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Remedy
Remedy
Remedy
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