: Feb. 9 2004
1
AR-M550/M620/M700 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 29
Main
code
Sub
code
Title
Fusing section high temperature
trouble
H3 00/
HL1
Phenomenon Display Lamp
Message
01/
HL2
Details
Fusing section high
temperature trouble
The fusing temperature
exceeds 241.5°C. (An
input voltage of 0.35V or
less is detected.)
When fusing temperature
control is started and a
temperature of 242°C is
detected 3 times
continuously in sampling
of 300 (450) msec
interval. (Except for
Japan)
02/
HL3
Section Engine
Operation
mode
Note
Case 1 Trouble
position/
Cause
Thermistor trouble
Control PWB trouble
Improper connection of
the fusing section
connector
AC power trouble
Remedy Use SIM 5-2 to check
flashing of the heater
lamp.
When the lamp flashes
normally.
• Check the thermistor
and the harness.
• Check the thermistor
input circuit on the
control PWB.
When the lamp keeps
ON.
• Check the AC PWB
and the lamp control
circuit on the control
PWB.
Use SIM 14 to cancel the
trouble
Note
1
Main
code
Sub
code
Title
Fusing section low temperature
trouble
H4 00/
HL1
Phenomenon Display Lamp
Message
01/
HL2
Details Fusing section low
temperature trouble
The set temperature is
not reached within the
specified time (normally 4
min) after turning on the
power relay.
The heater lamp does not
turn off in 4 min after
starting warming up.
02/
HL3
After completion of
warming up, when the
temperature below (*) is
detected 5 times
continuously during
sampling in the interval of
300(450) msec (EX
JAPAN):
* H4-02/HL3: 80°C (Fixed
level)
This temperature is -50°C
lower than the
temperature control level
of H4-00/HL1, H4-01/
HL2.
Section Engine
Operation
mode
Note
Case 1 Trouble
position/
Cause
Thermistor trouble
Heater lamp trouble
Control PWB trouble
Thermostat trouble
AC power trouble
Interlock switch
Remedy Use SIM 5-2 to check
flashing of the heater
lamp.
When the lamp flashes
normally.
• Check the thermistor
and the harness.
• Check the thermistor
input circuit on the
control PWB.
When the lamp does not
turn on.
• Check for
disconnection of the
heater lamp or the
thermostat.
• Check the interlock
switch.
• Check the AC PWB
and the lamp control
circuit on the control
PWB.
Use SIM 14 to cancel the
trouble
Note
1
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