MX-C250 TROUBLESHOOTING 7 – 11
H2-02
Sub thermister open trouble (TH_US)
H2-03
Compensation thermister open
trouble (TH_UM_AD1)
H3-00
Fusing section high temperature
trouble (TH_UM)
H3-02
Fusing section high temperature
trouble (TH_US)
H4-00
Fusing section low temperature
trouble (TH_UM_AD2)
H5-01
5 times continuous POD1 not-reach
jam
H7-10
Fusing low temperature recovery
trouble (TH_UM_AD2).
Cause
Thermister trouble.
MFPC PWB trouble.
Connection trouble of the connector and the
harness.
Fusing unit not installed.
Check & Remedy
Replace the thermister.
Replace the MFPC PWB.
Harness and connector connection trouble.
Cause
Thermister trouble.
MFPC PWB trouble
Connection trouble of the connector and the
harness.
Fusing unit not installed.
Check & Remedy
Replace the thermister.
Replace the MFPC PWB.
Harness and connector connection trouble.
Cause
The fusing temperature exceeds the specified
level.
Thermister trouble.
MFPC PWB trouble
Connection trouble of the connector and the
harness.
Power unit trouble.
Check & Remedy
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermister.
Replace the MFPC PWB.
Harness and connector connection trouble.
Replace the power unit.
Cause
The fusing temperature exceeds the specified
level.
Thermister trouble.
MFPC PWB trouble
Connection trouble of the connector and the
harness.
Power unit trouble.
Check & Remedy
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermister.
Replace the MFPC PWB.
Harness and connector connection trouble.
Replace the power unit.
Cause
The fusing temperature does not reach the
specified level within the specified time from
turning ON the power relay.
Thermister trouble.
Heater lamp trouble.
MFPC PWB trouble.
Thermostat trouble.
Connector, harness connection trouble.
Power unit trouble.
Interlock switch trouble.
Check & Remedy
Replace the thermister.
Replace the heater lamp.
Replace the MFPC PWB.
Replace the thermostat.
Check connection of the connector and the
harness.
Replace the power unit.
Replace the interlock switch.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Cause
A fusing jam is not canceled completely. (A jam
paper remains.)
POD1 sensor trouble.
Fusing unit installation trouble.
Connector, harness connection trouble.
MFPC PWB trouble
Check & Remedy
Replace the POD1 sensor.
Check the installing position of the fusing unit.
Replace the fusing unit.
Check connection of the connector and the
harness.
Replace the MFPC PWB.
Use SIM14 to cancel the trouble.
Cause
The fusing temperature does not reach the
specified level within the specified time from
stopping a job due to fall in the fusing temperature.
Thermister trouble.
Heater lamp trouble.
MFPC PWB trouble
Thermostat trouble.
Connector, harness connection trouble.
Power unit trouble.
Interlock switch trouble.
Check & Remedy
Replace the thermister.
Replace the heater lamp.
Replace the MFPC PWB.
Replace the thermostat.
Check connection of the connector and the
harness.
Replace the power unit.
Replace the interlock switch.
Use SIM5-2 to check the flashing operation of the
heater lamp.