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Confidential
Error code 0506
The center thermistor of the fuser unit detected a temperature fall greater than the specified
value within the specified time.
Print Unable 05
Turn the power off and then back on again.
<User Check>
• Turn OFF the power switch. After several seconds, turn ON the power again and check
that this error is reset.
Step Cause Remedy
1
Connection failure of the center
or side thermistor harness of the
fuser unit
Reconnect the center or side thermistor
harness of the fuser unit.
2
Connection failure of the fuser
unit heater harness
Reconnect the fuser unit heater harness.
3
Connection failure of the eject
sensor PCB flat cable
Reconnect the eject sensor PCB flat cable.
4
Connection failure of the LVPS
harness
Reconnect the LVPS harness.
5
Eject sensor PCB failure Replace the eject sensor PCB ASSY.
6
Fuser unit failure Replace the fuser unit.
7
Low-voltage power supply PCB
failure
Replace the low-voltage power supply PCB
ASSY.
8
Main PCB failure Replace the main PCB ASSY.
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