Brother 09055CDN Service Manual page 79

■ Error code 28
Print Unable 28
Turn the power off and then back on again.
Drum drive motor error.
<User Check>
- If paper or any other foreign object is affixed to the exposure roller of the drum, remove it.
Step
1 Harness connection failure of
drum drive motor
2 Drum drive motor failure
3 Engine PCB failure
4 Low-voltage power supply PCB
failure
5 Main PCB failure
■ Error code 29
Print Unable 29
Turn the power off and then back on again.
Paper eject motor error.
<User Check>
- Turn OFF the power switch, and turn it ON again after a while.
Step
1 Harness connection failure of
paper eject motor
2 Paper eject motor failure
3 Engine PCB failure
4 Low-voltage power supply PCB
failure
5 Main PCB failure
Cause
Cause
2-40
Remedy
Check the harness connection of the
drum drive motor and reconnect it.
Replace the drum drive motor.
Replace the engine PCB ASSY.
Replace the low-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Remedy
Check the harness connection of the
paper eject motor and reconnect it.
Replace the paper eject motor.
Replace the engine PCB ASSY.
Replace the low-voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
Confidential