Brother MFC-9130CW Service Manual page 93

■ Error code 6801
Cooling Down
Wait for a while
The internal temperature sensor detected a temperature higher than the specified value.
<User Check>
- Decrease the room temperature.
- Place the machine away from a heater.
Step
1 Internal temperature sensor
harness connection failure
2 Eject sensor PCB harness
connection failure
3 Eject sensor PCB failure
4 Main PCB failure
■ Error code 6901
Fuser Error
Turn the power off, then on again. Leave the machine for 15 min.
Some fuser unit errors occurred at power-ON or upon recovery from sleep mode.
Error code 6902
Self-Diagnostic
Will Automatically Restart within 15 minutes.
After the error was detected at the fuser unit, power was turned ON again and the error is
being checked. (If power is turned OFF and ON after error code 6901 occurred, this code is
displayed for about 15 minutes.)
Step
1 Each harness connection failure
of the fuser unit
2 Eject sensor PCB harness
connection failure
3 Fuser unit failure
4 Eject sensor PCB failure
5 Low-voltage power supply PCB
failure
6 Main PCB failure
Note:
Turn the power OFF. After checking that the fuser unit has cooled down, turn the power ON
again. After the machine is left as it is for about 10 minutes, this problem may be resolved.
Cause
Cause
2-54
Remedy
Check the internal temperature sensor
harness connection and reconnect it.
Check the eject sensor PCB harness
connection and reconnect it.
Replace the eject sensor PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check each harnesses connection of the
fuser unit and reconnect them.
Check the eject sensor PCB harness
connection and reconnect it.
Replace the fuser unit.
Replace the eject sensor PCB ASSY.
Replace the low-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
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