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MX-7000N SELF DIAG AND TROUBLE CODE 8 – 25
H4-00
Fusing section low temperature
trouble (TH_UM_AD2)
trouble (TH_UM_AD2)
H4-01
Fusing section low temperature
trouble (TH_LM)
trouble (TH_LM)
H4-02
Sub thermistor fusing section low
temperature trouble (TH_US)
temperature trouble (TH_US)
H4-04
External heating thermistor fusing
section low temperature trouble
(TH_EX1)
section low temperature trouble
(TH_EX1)
H4-30
Detection thermistor input
abnormality (TH_UM)
abnormality (TH_UM)
H5-01
5 continuous detection of POD1 not-
reached jam
reached jam
Trouble content
The temperature does not reach the specified level
within the specified time after turning on the power
relay.
within the specified time after turning on the power
relay.
Section
PCU
Case 1
Cause
Thermistor trouble, heater lamp trouble, PCU PWB
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
Check and
remedy
remedy
1)
Use SIM5-2 to check blinking of the heater
lamp.
lamp.
2)
If it blinks normally, check the thermistor and
the harness.
Check the PCU PWB thermistor input circuit
section.
the harness.
Check the PCU PWB thermistor input circuit
section.
3)
If it is not lighted, check for the heater lamp
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
4)
Use SIM14 to cancel the trouble.
Trouble content
The temperature does not reach the specified level
within the specified time after turning on the power
relay.
within the specified time after turning on the power
relay.
Section
PCU
Case 1
Cause
Thermistor trouble, heater lamp trouble, PCU PWB
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
Check and
remedy
remedy
1)
Use SIM5-2 to check blinking of the heater
lamp.
lamp.
2)
If it blinks normally, check the thermistor and
the harness.
Check the PCU PWB thermistor input circuit
section.
the harness.
Check the PCU PWB thermistor input circuit
section.
3)
If it is not lighted, check for the heater lamp
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
4)
Use SIM14 to cancel the trouble.
Trouble content
The temperature does not reach the specified level
within the specified time after turning on the power
relay.
within the specified time after turning on the power
relay.
Section
PCU
Case 1
Cause
Thermistor trouble, heater lamp trouble, PCU PWB
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
Check and
remedy
remedy
1)
Use SIM5-2 to check blinking of the heater
lamp.
lamp.
2)
If it blinks normally, check the thermistor and
the harness.
Check the PCU PWB thermistor input circuit
section.
the harness.
Check the PCU PWB thermistor input circuit
section.
3)
If it is not lighted, check for the heater lamp
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
4)
Use SIM14 to cancel the trouble.
Trouble content
When the power relay is turned ON after supplying
power, the set temperature is not reached within
the specified time.
power, the set temperature is not reached within
the specified time.
Section
PCU
Case 1
Cause
Thermistor trouble, heater lamp trouble, PCU PWB
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
trouble, thermostat trouble, AC power source
trouble, interlock switch trouble
Check and
remedy
remedy
1)
Use SIM5-2 to check blinking of the heater
lamp.
lamp.
2)
If it blinks normally, check the thermistor and
the harness.
Check the PCU PWB thermistor input circuit
section.
the harness.
Check the PCU PWB thermistor input circuit
section.
3)
If it is not lighted, check for the heater lamp
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
4)
Use SIM14 to cancel the trouble.
Trouble content
TH_UM_AD1 and TH_UM_AD2 do not exceed the
specified level (50 count with the AD value) within
5 minutes after HL_UM is turned on.
specified level (50 count with the AD value) within
5 minutes after HL_UM is turned on.
Section
PCU
Case 1
Cause
HL_UM does not turn on. Thermistor trouble,
harness trouble, PCU PWB trouble
harness trouble, PCU PWB trouble
Check and
remedy
remedy
1)
Use SIM5-2 to check blinking of the heater
lamp.
lamp.
2)
If it blinks normally, check the thermistor and
the harness.
Check the PCU PWB thermistor input circuit
section.
the harness.
Check the PCU PWB thermistor input circuit
section.
3)
If it is not lighted, check for the heater lamp
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
disconnection and the thermostat breakage.
Check the interlock switch. Check the AC
PWB and the PCU PWB lamp control circuit.
4)
Use SIM14 to cancel the trouble.
Trouble content
5 continuous detection of POD1 not-reached jam
Section
PCU
Case 1
Cause
The fusing jam is not removed completely. (Jam
paper remains.)
paper remains.)
Check and
remedy
remedy
Check the fusing section for jam paper. (winding,
etc.)
etc.)
Case 2
Cause
POD1 sensor trouble or harness connection
trouble
trouble
Check and
remedy
remedy
Check the POD1 sensor harness.
Use SIM14 to cancel the trouble.
Use SIM14 to cancel the trouble.
Case 3
Cause
Fusing unit installation trouble
Check and
remedy
remedy
Check the fusing unit installation.
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