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Confidential
■ Error code 6F
Fuser unit error.
(The center and side thermistors detect extremely high temperature.) (Detection of hardware.)
■ Error code 70
Fuser develop motor error.
<User Check>
- Open the fuser cover to check if paper is wound around the fuser unit.
- Replace the toner cartridges except the black toner cartridge.
Print Unable 6F
Turn the power off and then back on again.
Step Cause Remedy
1 Fuser unit connector connection
failure
Reconnect the connector of the fuser unit.
2 Fuser unit failure Replace the fuser unit.
3 Low-voltage power supply PCB
failure
Replace the low-voltage power supply PCB
ASSY.
4 Paper eject sensor PCB failure Replace the paper eject sensor PCB
ASSY.
5 Main PCB failure Replace the main PCB ASSY.
Print Unable 70
Turn the power off and then back on again.
Step Cause Remedy
1 Harness connection failure of
fuser develop motor
Check the harness connection of the
fuser develop motor and reconnect it.
2 Fuser develop motor failure Replace the fuser develop motor ASSY.
3 Engine PCB failure Replace the engine PCB ASSY.
4 Low-voltage power supply PCB
failure
Replace the low-voltage power supply
PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.
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