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Confidential
Error code 6F
The center thermistor or the side thermistor of the fuser unit detected a temperature error.
Error code 70
This error does not usually occur in the normal use. The conceivable causes are noise
around the installation site, fluctuation of the power supply voltage, and failures in the
software.
An unidentified error occurred.
Print Unable 6F
Turn the power off and then back on again.
Step Cause Remedy
1
Connection failure of the fuser
unit harness
Reconnect the fuser unit harness.
2 Fuser unit failure Replace the fuser unit.
3
Low voltage power supply PCB
failure
Replace the low voltage power supply PCB
ASSY.
4 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.
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<User Check>
• Turn OFF the power switch, and turn it ON again after a while.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.
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