Sharp AL-1622 (serv.man20) Service Manual ▷ View online
AL-1611/AL-1622
TROUBLE CODE LIST
10 – 3
E7
03
Check and
remedy
remedy
Improper connection of the LSU connec-
tor
Check the polygon motor operation with
SIM 25-10.
Check printing with SIM64-1.
Check laser emission of laser emitting
diode.
Check the LSU unit.
Check the MCU PWB.
tor
Check the polygon motor operation with
SIM 25-10.
Check printing with SIM64-1.
Check laser emission of laser emitting
diode.
Check the LSU unit.
Check the MCU PWB.
04
Content
CCD white level trouble
Detail
CCD white reference level which is read
during the copy lamp lighting is abnor-
mal.
during the copy lamp lighting is abnor-
mal.
Cause
Flat cable installation failure to CCD unit
Dirt on the mirror, lens, and reference
white plate
Copy lamp lighting failure
CCD unit installation failure
CCD unit abnormality
MCU PWB abnormality
Dirt on the mirror, lens, and reference
white plate
Copy lamp lighting failure
CCD unit installation failure
CCD unit abnormality
MCU PWB abnormality
Check and remedy Clean the mirror, the
lens, and the reference white plate.
Check the copy lamp (SIM 5-3) ON.
Carriage unit position failure
Check the sub scanning direction distor-
tion adjustment (F rail height).
CCD unit check
MCU PWB check
lens, and the reference white plate.
Check the copy lamp (SIM 5-3) ON.
Carriage unit position failure
Check the sub scanning direction distor-
tion adjustment (F rail height).
CCD unit check
MCU PWB check
05
Content
CCD black level trouble
Detail
CCD black level which is read while the
copy lamp is off is abnormal.
copy lamp is off is abnormal.
Cause
Flat cable installation failure
CCD unit abnormality
MCU PWB abnormality
CCD unit abnormality
MCU PWB abnormality
Check and
remedy
remedy
Check flat cable installation to the CCD
unit.
CCD unit check
MCU PWB check
unit.
CCD unit check
MCU PWB check
F1
06
Content
Shifter motor trouble
Details
The home position is not detected within
1 sec after shifter motor drive.
1 sec after shifter motor drive.
Cause
The shifter home position sensor is
defective.
The shifter motor is defective.
The shifter motor periphery circuit is
defective.
The condition of the MCU PWB JP4 is
wrong.
The assembly of the shifter motor unit is
improper.
defective.
The shifter motor is defective.
The shifter motor periphery circuit is
defective.
The condition of the MCU PWB JP4 is
wrong.
The assembly of the shifter motor unit is
improper.
Check and
remedy
remedy
Check the shifter operation by means of
SIM3-2 and 3.
Check the harnesses and connectors.
Check whether the shifter unit is properly
assembled.
Check whether the condition of the MCU
PWB JP4 is correct.
SIM3-2 and 3.
Check the harnesses and connectors.
Check whether the shifter unit is properly
assembled.
Check whether the condition of the MCU
PWB JP4 is correct.
F2
04
Content
CRUM data read trouble
Detail
Communication error between CRUM
PWB and MCU PWB
PWB and MCU PWB
Cause
CRUM PWB data error
MCU PWB error
MCU PWB EEPROM error
Disconnection between CRUM (toner
cartridge) and MCU PWB
MCU PWB error
MCU PWB EEPROM error
Disconnection between CRUM (toner
cartridge) and MCU PWB
Main
code
code
Sub
code
code
Detail of trouble
F2
04
Check and
remedy
remedy
Replace the toner cartridge.
Replace MCU PWB.
Replace MCU PWB EEPROM
Check and fix connection between
CRUM (toner cartridge) and MCU PWB.
Replace MCU PWB.
Replace MCU PWB EEPROM
Check and fix connection between
CRUM (toner cartridge) and MCU PWB.
F5
02
Content
Copy lamp error
Detail
Copy lamp voltage detection error
Cause
Power unit trouble Copy lamp trouble
Inverter trouble MCU PWB trouble
Inverter trouble MCU PWB trouble
Check and
remedy
remedy
Replace the power unit.
Check the copy lamp ON with SIM 5-3.
Replace the copy lamp.
Replace the inverter.
Replace the MCU PWB.
Check the copy lamp ON with SIM 5-3.
Replace the copy lamp.
Replace the inverter.
Replace the MCU PWB.
F9
00
Content
Communication trouble between MCU
and printer PWB (MCU detection)
and printer PWB (MCU detection)
Detail
Communication establishment error,
framing error, parity error, protocol error
framing error, parity error, protocol error
Cause
Bad connection of printer PWB connec-
tor
Defective harness between printer PWB
and MCU PWB.
Motherboard connector pin breakage
Printer PWB ROM error, data error
tor
Defective harness between printer PWB
and MCU PWB.
Motherboard connector pin breakage
Printer PWB ROM error, data error
Check and
remedy
remedy
Check connector/harness of printer PWB
and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.
and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.
10
Content
Printer PWB trouble
Detail
Communication trouble between MCU
and printer PWB
and printer PWB
Cause
Bad connection of printer PWB connec-
tor
Defective harness between printer PWB
and MCU PWB.
Motherboard connector pin breakage
Printer PWB ROM error, data error
tor
Defective harness between printer PWB
and MCU PWB.
Motherboard connector pin breakage
Printer PWB ROM error, data error
Check and
remedy
remedy
Check connector/harness of printer PWB
and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.
and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.
80
Content
Printer PWB communication trouble
(Protocol)
(Protocol)
Detail
Communication trouble between MCU
and printer PWB (Protocol error)
and printer PWB (Protocol error)
Cause
Bad connection of printer PWB connec-
tor
Defective harness between printer PWB
and MCU PWB.
Motherboard connector pin breakage
Printer PWB ROM error, data error
tor
Defective harness between printer PWB
and MCU PWB.
Motherboard connector pin breakage
Printer PWB ROM error, data error
Check and
remedy
remedy
Check connector/harness of printer PWB
and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.
and MCU PWB.
Check grounding of the machine.
Check printer PWB ROM.
81
Content
Printer PWB communication trouble
(Parity)
(Parity)
Details
Communication trouble between MCU
and printer PWB (Parity error)
and printer PWB (Parity error)
Cause
Printer PWB connector disconnection
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Main
code
code
Sub
code
code
Detail of trouble
AL-1611/AL-1622
TROUBLE CODE LIST
10 – 4
F9
81
Check and
remedy
remedy
Check the connectors and harness of
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
82
Content
Printer PWB communication trouble
(Overrun)
(Overrun)
Details
Communication trouble between MCU
and printeu PWB (Overrun error)
and printeu PWB (Overrun error)
Cause
Printer PWB connector disconnection
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Check and
remedy
remedy
Check the connectors and harness of
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
84
Content
Printer PWB communication trouble
(Framing)
(Framing)
Details
Communication trouble between MCU
and printer PWB (Framing error)
and printer PWB (Framing error)
Cause
Printer PWB connector disconnection
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Check and
remedy
remedy
Check the connectors and harness of
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
88
Content
Printer PWB communication trouble
(Time-out)
(Time-out)
Details
Communication trouble between MCU
and printeu PWB (Time-out error)
and printeu PWB (Time-out error)
Cause
Printer PWB connector disconnection
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage.
Printer PWB ROM defect, data failure
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage.
Printer PWB ROM defect, data failure
Check and
remedy
remedy
Check the connectors and harness of
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
H2
00
Content
Thermistor open detection
Detail
Fusing thermistor open
Cause
Thermistor defect
MCU PWB defect
Fusing section connector contact failure
Power supply failure
Fusing unit not installed
MCU PWB defect
Fusing section connector contact failure
Power supply failure
Fusing unit not installed
Check and
remedy
remedy
Check the harness and the connector of
the thermistor and the MCU.
Clear the self diag display with SIM 14.
the thermistor and the MCU.
Clear the self diag display with SIM 14.
H3
00
Content
Heat roller abnormally high temperature
Detail
Fusing temperature of 220 ~ 240°C.
Cause
Thermistor defect
MCU PWB defect
Fusing connector connection failure
Power supply failure
MCU PWB defect
Fusing connector connection failure
Power supply failure
Main
code
code
Sub
code
code
Detail of trouble
H3
00
Check and
remedy
remedy
Check the heater lamp blinking with SIM
5-2.
When the lamp blinks normally:
5-2.
When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
Check the MCU PWB thermistor input
circuit.
When the lamp lights up instead of blink-
ing:
Check the lamp control circuit of the
power supply PWB and the MCU PWB.
Check the lamp control circuit of the
power supply PWB and the MCU PWB.
Clear the trouble with SIM 14.
H4
00
Content
Heat roller abnormally low temperature
Detail
When the temperature does not reach
155°C within 55 sec after turning on the
power, or when it falls under 145°C dur-
ing printing, or when it falls under 100°C
during pre-heating.
155°C within 55 sec after turning on the
power, or when it falls under 145°C dur-
ing printing, or when it falls under 100°C
during pre-heating.
Cause
Thermistor failure
Heater lamp failure
MCU PWB failure
Thermostat failure
Power supply failure
Interlock switch failure
Heater lamp failure
MCU PWB failure
Thermostat failure
Power supply failure
Interlock switch failure
Check and
remedy
remedy
Check blinking of the heater lamp with
SIM 5-2.
SIM 5-2.
When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
Check the MCU PWB thermistor input
circuit.
When the lamp does not light:
Check for heater lamp disconnection or
thermostat disconnection.
Check the interlock switch.
Check the power supply PWB and
MCU PWB lamp control circuit.
thermostat disconnection.
Check the interlock switch.
Check the power supply PWB and
MCU PWB lamp control circuit.
Clear the trouble with SIM 14.
L1
00
Content
Mirror base feed trouble
Detail
The mirror home position (MHPS) does
not turn off though the feed operation is
completed during mirror initial operation
after turning on the power.
The mirror home position (MHPS) does
not turn off during shading operation.
The mirror home position (MHPS) does
not turn on when the mirror base is
returned for the specified time after copy
feed is started and SPF scanning posi-
tion shift is performed.
not turn off though the feed operation is
completed during mirror initial operation
after turning on the power.
The mirror home position (MHPS) does
not turn off during shading operation.
The mirror home position (MHPS) does
not turn on when the mirror base is
returned for the specified time after copy
feed is started and SPF scanning posi-
tion shift is performed.
Cause
Mirror unit defect
Mirror home position sensor defect
MCU PWB defect Scanner wire discon-
nection
Mirror home position sensor defect
MCU PWB defect Scanner wire discon-
nection
Check and
remedy
remedy
Check the scanning operation with SIM
1-1.
1-1.
L3
00
Content
Mirror base return trouble
Detail
The mirror home position (MHPS) does
not turn on though the mirror base
returning is completed during mirror ini-
tial operation after turning on the power.
The mirror home position does not turn
on when the mirror is returned to the
home position during shading.
The mirror home position (MHPS) does
not turn on when the mirror base return-
ing is completed for the specified time
(about 6 sec) after copy return start.
not turn on though the mirror base
returning is completed during mirror ini-
tial operation after turning on the power.
The mirror home position does not turn
on when the mirror is returned to the
home position during shading.
The mirror home position (MHPS) does
not turn on when the mirror base return-
ing is completed for the specified time
(about 6 sec) after copy return start.
Main
code
code
Sub
code
code
Detail of trouble
AL-1611/AL-1622
TROUBLE CODE LIST
10 – 5
L3
00
Cause
Mirror unit
Mirror home position sensor defect
MCU PWB defect Scanner wire discon-
nection
Mirror home position sensor defect
MCU PWB defect Scanner wire discon-
nection
Check and
remedy
remedy
Check the scanning operation with SIM
1-1.
1-1.
L4
01
Content
Main motor lock
Detail
The main motor encoder pulse is not
detected for 400msec.
detected for 400msec.
Cause
Main motor defect
Harness disconnection between the
MCU PWB and the main motor.
Control circuit failure
Harness disconnection between the
MCU PWB and the main motor.
Control circuit failure
Check and
remedy
remedy
Check the main motor operation with
SIM 25-1.
Check the harness and the connector
between the MCU PWB and the main
motor.
SIM 25-1.
Check the harness and the connector
between the MCU PWB and the main
motor.
10
Content
Job separator motor trouble
Details
When the home is not detected within
2.5 sec after the job separator tray starts
to move upwards.
2.5 sec after the job separator tray starts
to move upwards.
Cause
The job separator upper limit detection
sensor is defective.
The job separator motor is defective.
The job separator motor periphery circuit
is defective. The condition of the MCU
PWB JP5 is wrong.
sensor is defective.
The job separator motor is defective.
The job separator motor periphery circuit
is defective. The condition of the MCU
PWB JP5 is wrong.
Check and
countermea-
sure
countermea-
sure
Check the job separator operation by
means of SIM3-2 and 4.
Check the harnesses and connectors.
Check whether the condition of the MCU
PWB JP5 is correct.
means of SIM3-2 and 4.
Check the harnesses and connectors.
Check whether the condition of the MCU
PWB JP5 is correct.
L6
10
Content
Polygon motor lock
Detail
The lock signal (the specified rotation
speed signal) is not supplied within the
specified time (about 6 sec) after starting
the polygon motor rotation.
speed signal) is not supplied within the
specified time (about 6 sec) after starting
the polygon motor rotation.
Cause
LSU connector disconnection or harness
disconnection in the LSU.
disconnection in the LSU.
Check and
remedy
remedy
Check the operation of the polygon
motor with SIM 25-10.
Check the harness and the connector
connection. LSU replacement
motor with SIM 25-10.
Check the harness and the connector
connection. LSU replacement
L8
01
Content
Zero cross pulse (FW) trouble
Detail
Zero cross pulse width is shifted by 55Hz
m
10% or more.
Cause
MCU PWB defect Power supply unit
breakdown
breakdown
Check and
remedy
remedy
Check the harness and the connector.
MCU PWB replacement Power supply
unit replacement
MCU PWB replacement Power supply
unit replacement
U2
04
Content
EEPROM serial communication error
Detail
Error in communication with EEPROM
Cause
EEPROM failure
Installation of uninitialized EEPROM
MCU PWB EERPOM access circuit fail-
ure
Installation of uninitialized EEPROM
MCU PWB EERPOM access circuit fail-
ure
Check and
remedy
remedy
Check that the EEPROM is properly set.
To prevent against loss of counter/
adjustment values, record the values
with simulation.
U2 trouble cancel with SIM 16 MCU
PWB replacement
To prevent against loss of counter/
adjustment values, record the values
with simulation.
U2 trouble cancel with SIM 16 MCU
PWB replacement
Main
code
code
Sub
code
code
Detail of trouble
U2
11
Content
Counter check sum error
Detail
Counter check sum value stored in the
EEPROM is abnormal.
EEPROM is abnormal.
Cause
EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access circuit
defect
Control circuit hung up by noises
MCU PWB EEPROM access circuit
defect
Check and
remedy
remedy
Check that the EEPROM is properly set.
To prevent against loss of counter/
adjustment values, record the values
with simulation.
U2 trouble cancel with SIM 16 MCU
PWB replacement
To prevent against loss of counter/
adjustment values, record the values
with simulation.
U2 trouble cancel with SIM 16 MCU
PWB replacement
12
Content
Adjustment value check sum error
(EEPROM)
(EEPROM)
Detail
Adjustment value data area check sum
error
error
Cause
EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access circuit fail-
ure
Control circuit hung up by noises
MCU PWB EEPROM access circuit fail-
ure
Check and
remedy
remedy
Check that the EEPROM is properly set.
To prevent against loss of counter/
adjustment values, record the values
with simulation.
U2 trouble cancel with SIM 16 MCU
PWB replacement
To prevent against loss of counter/
adjustment values, record the values
with simulation.
U2 trouble cancel with SIM 16 MCU
PWB replacement
40
Content
CRUM communication error
Detail
Toner cartridge CRUM data read error
Cause
A toner cartridge of a different destina-
tion is installed.
EEPROM trouble
Check the destination setup.
Toner cartridge CRUM PWB trouble
MCU PWB trouble
CRUM connector disconnection
tion is installed.
EEPROM trouble
Check the destination setup.
Toner cartridge CRUM PWB trouble
MCU PWB trouble
CRUM connector disconnection
Check and
remedy
remedy
Install a specified toner cartridge.
Check the SIM 26-6 setup.
Replace the EEPROM. Replace the
toner cartridge.
Replace the MCU PWB.
Check connection of the CRUM connec-
tor.
Execute SIM 16.
Check the SIM 26-6 setup.
Replace the EEPROM. Replace the
toner cartridge.
Replace the MCU PWB.
Check connection of the CRUM connec-
tor.
Execute SIM 16.
U3
29
Content
Mirror base home position error
Detail
Home position is not detected when
starting mirror base shift.
starting mirror base shift.
Cause
Mirror unit defect
Mirror home position sensor defect
MCU PWB decfect
Scanner wire disconnection
Mirror home position sensor defect
MCU PWB decfect
Scanner wire disconnection
Check and
remedy
remedy
Check the scanning operation with SIM
1-1.
1-1.
U9
00
Content
Communication trouble between MCU
and OPE (OPE detection)
and OPE (OPE detection)
Detail
Communication setup error, framing,
parity, protocol error
parity, protocol error
Cause
Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
connection
Operation control PWB MCU PWB har-
ness failure
Check and
remedy
remedy
Check the connectors and harness of
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the operation control
PWB.
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the operation control
PWB.
Main
code
code
Sub
code
code
Detail of trouble
AL-1611/AL-1622
TROUBLE CODE LIST
10 – 6
U9
80
Content
Operation control PWB communication
trouble (Protocol)
trouble (Protocol)
Detail
Communication trouble between
MCU and the operation control
PWB (Protocol error)
MCU and the operation control
PWB (Protocol error)
Cause
Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
connection
Operation control PWB MCU PWB har-
ness failure
Check and
remedy
remedy
Check the connectors and harness of
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
81
Content
Operation control PWB communication
trouble (Parity)
trouble (Parity)
Detail
Communication trouble between MCU
and the operation control PWB (Parity
error)
and the operation control PWB (Parity
error)
Cause
Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
connection
Operation control PWB MCU PWB har-
ness failure
Check and
remedy
remedy
Check the connectors and harness of
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
82
Content
Operation control PWB communication
trouble (Overrun)
trouble (Overrun)
Detail
Communication trouble between MCU
and the operation control PWB (Overrun
error)
and the operation control PWB (Overrun
error)
Cause
Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
connection
Operation control PWB MCU PWB har-
ness failure
Check and
remedy
remedy
Check the connectors and harness of
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
84
Content
Operation control PWB communication
trouble (Framing)
trouble (Framing)
Detail
Communication trouble between MCU
and the operation control PWB (Framing
error)
and the operation control PWB (Framing
error)
Cause
Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
connection
Operation control PWB MCU PWB har-
ness failure
Check and
remedy
remedy
Check the connectors and harness of
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
88
Content
Operation control PWB communication
trouble (Time-out)
trouble (Time-out)
Detail
Communication trouble between MCU
and the operation PWB (Time-out error)
and the operation PWB (Time-out error)
Cause
Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
connection
Operation control PWB MCU PWB har-
ness failure
Check and
remedy
remedy
Check the connectors and harness of
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
the operation control PWB and the MCU
PWB.
Check grounding of the machine.
Main
code
code
Sub
code
code
Detail of trouble
U95
Content
Operation control PWB communication
error
error
Detail
Communication error between the oper-
ation control PWB and the MCU PWB
(Detected by the OPE-PWB)
ation control PWB and the MCU PWB
(Detected by the OPE-PWB)
Cause
Disconnection or reverse connection of
the flat cable between the Operation
control PWB and the MCU PWB.
Operation control PWB trouble
MCU PWB trouble
Connector trouble of the operation con-
trol PWB and the MCU PWB
the flat cable between the Operation
control PWB and the MCU PWB.
Operation control PWB trouble
MCU PWB trouble
Connector trouble of the operation con-
trol PWB and the MCU PWB
Check and
remedy
remedy
Check insertion of or replace the flat
cable between the operation control
PWB and the MCU PWB.
Replace the operation control PWB.
Replace the MCU PWB.
Check connection of the connector of the
operation control PWB and the MCU
PWB.
cable between the operation control
PWB and the MCU PWB.
Replace the operation control PWB.
Replace the MCU PWB.
Check connection of the connector of the
operation control PWB and the MCU
PWB.
U99
Content
Operation control PWB communication
error
error
Detail
Communication error between the oper-
ation control PWB and the MCU PWB
(Detected by the OPE-PWB)
ation control PWB and the MCU PWB
(Detected by the OPE-PWB)
Cause
Disconnection or reverse connection of
the flat cable between the Operation
control PWB and the MCU PWB.
Operation control PWB trouble MCU
PWB trouble
Connector trouble of the operation con-
trol PWB and the MCU PWB
the flat cable between the Operation
control PWB and the MCU PWB.
Operation control PWB trouble MCU
PWB trouble
Connector trouble of the operation con-
trol PWB and the MCU PWB
Check and
remedy
remedy
Check insertion of or replace the flat
cable between the operation control
PWB and the MCU PWB.
Replace the operation control PWB.
Replace the MCU PWB.
Check connection of the connector of the
operation control PWB and the MCU
PWB.
cable between the operation control
PWB and the MCU PWB.
Replace the operation control PWB.
Replace the MCU PWB.
Check connection of the connector of the
operation control PWB and the MCU
PWB.
Main
code
code
Sub
code
code
Detail of trouble
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