Read Sharp AR-M700 (serv.man28) Service Manual online
: Feb. 9 2004
1
AR-M550/M620/M700 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 29
Main
code
code
Sub
code
Title
Fusing section high temperature
trouble
trouble
H3
00/
HL1
Phenomenon
Display
Lamp
Message
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)
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
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Thermistor trouble
Control PWB trouble
Improper connection of
the fusing section
connector
AC power 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
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.
control PWB.
When the lamp keeps
ON.
• Check the AC PWB
ON.
• Check the AC PWB
and the lamp control
circuit on the control
PWB.
circuit on the control
PWB.
Use SIM 14 to cancel the
trouble
trouble
Note
1
Main
code
code
Sub
code
Title
Fusing section low temperature
trouble
trouble
H4
00/
HL1
Phenomenon
Display
Lamp
Message
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.
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.
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
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Thermistor trouble
Heater lamp trouble
Control PWB trouble
Thermostat trouble
AC power trouble
Interlock switch
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
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.
control PWB.
When the lamp does not
turn on.
• Check for
turn on.
• Check for
disconnection of the
heater lamp or the
thermostat.
heater lamp or the
thermostat.
• Check the interlock
switch.
• Check the AC PWB
and the lamp control
circuit on the control
PWB.
circuit on the control
PWB.
Use SIM 14 to cancel the
trouble
trouble
Note
1
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