Sharp AR-M236 Service Manual page 99

Trouble
code
Main Sub
code code
20 Content Main heater lamp abnormally low
H4
temperature detection
Details The setup temperature (about –25°C: Sim
43-1-1) is not reached within the specified
time (about 32sec) from turning on the
power ON SW.
(When the temperature falls below 140°C
in the standby mode.)
Cause Main heater thermistor defect
Main heater lamp failure
Main thermostat failure
Control PWB failure
Check Check the main heater lamp blinking with
and SIM 5-2.
remedy When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
When the lamp does not light:
Check for disconnection of the heater
lamp and thermostat.
Check the interlock switch.
Check the power PWB and the MCU PWB
lamp control circuit.
Clear the display of self-diagnostics with
SIM 14.
21 Content Sub heater lamp abnormally low
temperature detection
Details The setup temperature (about –25°C: Sim
43-1-1) is not reached within the specified
time (about 32sec) from turning on the
power ON SW.
(When the temperature falls below 140°C
in the standby mode.)
Cause Sub heater thermistor defect
Sub heater lamp failure
Sub thermostat failure
Control PWB failure
Check Check the sub heater lamp blinking with
and SIM 5-2-2.
remedy When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
When the lamp does not light:
Check for disconnection of the heater
lamp and thermostat.
Check the interlock switch.
Check the power PWB and the MCU PWB
lamp control circuit.
Clear the display of self-diagnostics with
SIM 14.
H5 01 Content 10 continuous POD1, POD2 or PPD2 JAM
Details POD1, POD2, PPD2 JAM was detected
10 continuous times from turning on the
power ON.
Cause The fusing JAM is not completely
removed. (Jam paper remains.)
POD1, POD2, PPD2 sensor breakdown or
harness connection trouble
Fusing unit installation failure
Check Check for jam paper in the fusing section.
and (paper winding, etc.)
remedy Check fusing unit installation.
Check the POD1, POD2 or PPD2 sensor.
Clear the trouble with SIM 14.
Details of trouble
AR-M236/M276/M237/M277 TROUBLE CODE LIST 9 - 8
Trouble
code
Main Sub
code code
L1 00 Content Scanner feed trouble
Details Scanner feed is not completed within the
specified time.
Cause Mirror unit defect
Scanner wire disconnection
Origin detection sensor error
Mirror motor harness abnormality
Check Check the scanning operation with SIM 1-
and 1.
remedy Mirror base feed trouble
Check for disconnection of the scanner
wire.
Check the harness and connector
between the mirror motor and the MCU
PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror feeds:
Check the mirror home position sensor
with SiM 1-2.
L3 00 Content Scanner return trouble
Details Scanner return is not completed within the
specified time.
"When OC copying with the mirror at the
home position, the mirror is not in the
home position. "
Cause Mirror unit defect
The scanner wire is disconnected.
Origin detection sensor error
Mirror motor harness abnormality
Check Check the scanning operation with SIM 1-
and 1.
remedy Mirror base return trouble
Check for disconnection of the scanner
wire.
Check the harness and connector
between the mirror motor and the MCU
PWB.
Replace the mirror unit.
Replace the MCU PWB.
When the mirror feeds:
Check the mirror home position sensor
with SiM 1-2.
L4 01 Content Main motor trouble
Details The main motor does not rotate.
The motor lock signal is detected for 1sec
or more after the main motor rotates.
The motor lock signal is detected for 1sec
during rotation of the main motor.
Cause Main motor defect
Main motor connection, harness trouble or
disconnection
MCU PWB failure
Check Check the main motor operation with SIM
and 25-1.
remedy Check connection of the main motor
harness and connector.
Replace the main motor.
Replace the MCU PWB.
Details of trouble