Unit installation

AR-C330 SELF DIAG MESSAGE AND TROUBLESHOOTING 10 - 48
H2 3 Case 1 Trouble
position/
cause
Fusing main temperature
sensor (lower) (Thermistor)
output line open trouble
Remedy (Check) Bad connection
between the fusing main
temperature sensor (lower)
(Thermistor) and the PCU
SUB PWB
(Repair) Check connection
of the fusing main
temperature sensor (lower)
(Thermistor) and the PCU
SUB PWB. / Power Source-
ON
(After-work) Repair or
replace the harness and
connector between the
fusing main temperature
sensor (lower) (Thermistor)
and the PCU SUB PWB.
Case 2 Trouble
position/
cause
PCU SUB PWB trouble
Remedy (Check) Check the PCU
SUB PWB fusing
temperature sensor circuit.
(Repair) PCU SUB PWB
replacement / Power
Source-ON
(After-work)
Main
code
Sub
code
Title
Fusing section high temperature
trouble (THS1)
H3 0 Phenomena Display Lamp
Message
Detail The fusing temperature
rises above 220°C. (The
temperature sensor
(Thermistor) voltage of
0.85V or less is detected.)
Section Fusing
Operation
mode
All modes
Note
Case 1 Trouble
position/
cause
Temperature sensor
(Thermistor) trouble
Remedy (Check) Check for dirt on
the temperature sensor
(Thermistor).
(Repair) Clean or replace
the temperature sensor
(Thermistor). / SIM 14
(After-work)
Case 2 Trouble
position/
cause
PCU SUB PWB trouble
Remedy (Check) Check the PCU
SUB PWB fusing
temperature sensor circuit.
(Repair) PCU SUB PWB
replacement / SIM 14
(After-work)
Main
code
Sub
code
Title
Fusing sub temperature sensor
(lower) (Thermistor) open / Fusing
unit not-installed (THS4)
H3 0 Case 3 Trouble
position/
cause
Heater lamp control PWB
(AC SUB PWB) trouble
Remedy (Check) Check the
operation of the heater
lamp. (SIM 5-2)
(Repair) Replace the heater
lamp control PWB (AC SUB
PWB). / SIM 14
(After-work)
Main
code
Sub
code
Title
Fusing section high temperature
trouble (THS2)
H3 1 Phenomena Display Lamp
H3 1
Message
Detail The fusing temperature
rises above 220°C. (The
temperature sensor
(Thermistor) voltage of
0.85V or less is detected.)
Section Fusing
Operation
mode
All modes
Note
Case 1 Trouble
position/
cause
Temperature sensor
(Thermistor) trouble
Remedy (Check) Check for dirt on
the temperature sensor
(Thermistor).
(Repair) Clean or replace
the temperature sensor
(Thermistor). / SIM 14
(After-work)
Case 2 Trouble
position/
cause
PCU SUB PWB trouble
Remedy (Check) Check the PCU
SUB PWB fusing
temperature sensor circuit.
(Repair) PCU SUB PWB
replacement / SIM 14
(After-work)
Case 3 Trouble
position/
cause
Heater lamp control PWB
(AC SUB PWB) trouble
Remedy (Check) Check the
operation of the heater
lamp. (SIM 5-2)
(Repair) Replace the heater
lamp control PWB (AC SUB
PWB). / SIM 14
(After-work)
Main
code
Sub
code
Title
Fusing section high temperature
trouble (THS1)