Read Sharp MX-6240N / MX-7040N (serv.man26) Service Manual online
MX-7040N TROUBLESHOOTING 7 – 37
H2-04
Non-contact thermistor lower main
compensation thermistor open
(TH_LM1_AD1)
H2-05
Non-contact thermistor upper sub
compensation thermistor open
(TH_US1_AD1)
H2-06
Upper edge section thermistor open
(TH_US2)
H2-07
Lower edge section thermistor open
(TH_LM2)
H3-00
Fusing section high temperature
trouble (TH_UM)
H3-01
Fusing section high temperature
trouble (TH_LM)
H3-02
Fusing section high temperature
trouble (TH_US)
Trouble content
The thermistor is open.
Detail
PCU
Cause
Thermistor trouble
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Check & Remedy
Check connection of the harness and the connector
from the thermistor to the control PWB.
from the thermistor to the control PWB.
Trouble content
The thermistor is open.
Detail
PCU
Cause
Thermistor trouble
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Check & Remedy
Check connection of the harness and the connector
from the thermistor to the control PWB.
from the thermistor to the control PWB.
Trouble content
The thermistor is open.
Detail
PCU
Cause
Thermistor trouble
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Check & Remedy
Check connection of the harness and the connector
from the thermistor to the control PWB.
from the thermistor to the control PWB.
Trouble content
The thermistor is open.
Detail
PCU
Cause
Thermistor trouble
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Control PWB trouble
Fusing section connector connection trouble
AC power trouble
Fusing unit not installed.
Check & Remedy
Check connection of the harness and the connector
from the thermistor to the control PWB.
from the thermistor to the control PWB.
Trouble content
Detail
PCU
Cause
The fusing temperature exceeds the specified level.
Thermistor trouble
PCU PWB trouble
Thermistor connector and harness connection trouble
HL control PWB trouble
Thermistor trouble
PCU PWB trouble
Thermistor connector and harness connection trouble
HL control PWB trouble
Check & Remedy
Use SIM44-14 to check the state of the thermistor.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the thermistor connector and the
harness.
Replace the HL control PWB.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the thermistor connector and the
harness.
Replace the HL control PWB.
Trouble content
Detail
PCU
Cause
The fusing temperature exceeds the specified level.
Thermistor trouble
PCU PWB trouble
Thermistor connector and harness connection trouble
HL control PWB trouble
Thermistor trouble
PCU PWB trouble
Thermistor connector and harness connection trouble
HL control PWB trouble
Check & Remedy
Use SIM44-14 to check the state of the thermistor.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the thermistor connector and the
harness.
Replace the HL control PWB.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the thermistor connector and the
harness.
Replace the HL control PWB.
Trouble content
Detail
PCU
Cause
The fusing temperature exceeds the specified level.
Thermistor trouble
PCU PWB trouble
Thermistor connector and harness connection trouble
HL control PWB trouble
Thermistor trouble
PCU PWB trouble
Thermistor connector and harness connection trouble
HL control PWB trouble
Check & Remedy
Use SIM44-14 to check the state of the thermistor.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the thermistor connector and the
harness.
Replace the HL control PWB.
Use SIM5-2 to check the flashing operation of the
heater lamp.
Use SIM14 to cancel the trouble.
Replace the thermistor.
Replace the PCU PWB.
Check connection of the thermistor connector and the
harness.
Replace the HL control PWB.
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