Sharp MX-M850 (serv.man38) Service Manual ▷ View online
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 25
L4-15
Fusing front PG control error
L4-29
HDD cooling fan motor trouble
L4-30
Controller fan motor trouble
L4-31
Machine heat exhaust fan 1 trouble
L4-32
Power cooling fan 1 / 2 trouble
L4-34
Polygon cooling fan trouble
L4-36
Toner suction fan trouble
L4-38
Reverse transport cooling fan trouble
Detail
FPGHP is not changed over during the initializing
operation of the fusing front PG motor
operation of the fusing front PG motor
Section
PCU
Cause
Fusing front PG motor trouble.
FPGHP sensor trouble.
PCU PWB trouble.
Harness connection trouble between the PCU PWB and
the fusing front PG motor.
Harness connection trouble between the PCU PWB and
the FPGHP.
FPGHP sensor trouble.
PCU PWB trouble.
Harness connection trouble between the PCU PWB and
the fusing front PG motor.
Harness connection trouble between the PCU PWB and
the FPGHP.
Check &
Remedy
Remedy
Use Sim. 6-1 to check the operation of the fusing front
PG motor.
Use Sim. 30-1 to check the FPGHP sensor.
Check the harness and the connector between the PCU
PWB and the fusing front PG motor.
Check the harness and the connector between the PCU
PWB and the FPGHP.
PG motor.
Use Sim. 30-1 to check the FPGHP sensor.
Check the harness and the connector between the PCU
PWB and the fusing front PG motor.
Check the harness and the connector between the PCU
PWB and the FPGHP.
Detail
The motor lock signal is detected during rotation of the
HDD fan motor.
HDD fan motor.
Section
ICU
Cause
Fan motor trouble.
Harness connection trouble between the controller
PWB and the fan motor.
Control circuit trouble.
Harness connection trouble between the controller
PWB and the fan motor.
Control circuit trouble.
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the
controller PWB and the fan motor.
Check the harness and the connector between the
controller PWB and the fan motor.
Detail
The motor lock signal is detected during rotation of the
controller fan motor.
The motor lock signal is detected during rotation of the
HDD fan motor.
controller fan motor.
The motor lock signal is detected during rotation of the
HDD fan motor.
Section
ICU
Cause
Fan motor trouble.
Harness connection trouble between the controller.
PWB and the fan motor.
Control circuit trouble.
Harness connection trouble between the controller.
PWB and the fan motor.
Control circuit trouble.
Check &
Remedy
Remedy
Check the fan motor operation with Sim. 6-2.
Check connection of the harness and the connector
between the controller PWB and the fan motor.
Check connection of the harness and the connector
between the controller PWB and the fan motor.
Detail
The lock signal is detected during operation of the
machine heat exhaust fan.
machine heat exhaust fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during operation of the
power cooling fan
power cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during the operation of the
polygon cooling fan.
polygon cooling fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during operation of the toner
suction fan.
suction fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Detail
The lock signal is detected during operation of the
reverse transport cooling fan.
reverse transport cooling fan.
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB.
Replace the fan motor.
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 26
L4-39
Reverse cooling fan trouble
L4-40
Ozone exhaust fan 1 trouble
L4-41
Ozone exhaust fan 2 trouble
L4-43
Paper cooling fan trouble
L4-46
Development cooling fan 1 trouble
L4-47
Power cooling fan 3 trouble
L4-48
ADU section paper cooling fan 1
trouble
trouble
L4-49
ADU section paper cooling fan 2
trouble
trouble
Detail
The lock signal is detected during operation of the
reverse cooling fan
reverse cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
ozone exhaust fan
ozone exhaust fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
ozone exhaust fan
ozone exhaust fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
paper cooling fan
paper cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
developing cooling fan
developing cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
power cooling fan
power cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the ADU
section paper cooling fan
section paper cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the ADU
section paper cooling fan
section paper cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 27
L4-50
Process cooling fan 1 trouble
L4-51
Process cooling fan 2 trouble
L4-52
Process cooling fan 3 trouble
L4-53
Process cooling fan 4 trouble
L4-54
PS cooling fan trouble
L4-55
Process cooling fan trouble
L6-10
Polygon motor trouble
L8-01
NO full wave signal
L8-05
No full wave signal (PCU detection)
Detail
The lock signal is detected during operation of the
process cooling fan
process cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
process cooling fan
process cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
process cooling fan
process cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
process cooling fan
process cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the PS
cooling fan
cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
The lock signal is detected during operation of the
process cooling fan
process cooling fan
Section
PCU
Cause
Harness connection trouble between the PCU PWB and
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
the fan motor.
PCU PWB trouble. Fan motor trouble.
The fan is not rotating due to other trouble.
(Power is not supplied to the fan motor.)
Check &
Remedy
Remedy
Use Sim. 6-2 to check the operation of the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Check the harness and the connector between the PCU
PWB and the fan motor.
Replace the PCU PWB. Replace the fan motor.
Detail
It is judged that the lock signal of the LSU polygon
motor is not outputted.
When the lock signal is checked 7sec after starting the
polygon motor rotation, it is judged that the polygon
motor does not rotate normally.
motor is not outputted.
When the lock signal is checked 7sec after starting the
polygon motor rotation, it is judged that the polygon
motor does not rotate normally.
Section
PCU
Cause
Disconnection or breakage of the LSU connector or the
harness inside the LSU.
Polygon motor trouble. LSU PWB trouble.
harness inside the LSU.
Polygon motor trouble. LSU PWB trouble.
Check &
Remedy
Remedy
Check the polygon motor operation with Sim. 61-1.
Check connection of the harness and the connector.
If the trouble still remains, replace the LSUcnt PWB or
replace the LSU PWB.
Check connection of the harness and the connector.
If the trouble still remains, replace the LSUcnt PWB or
replace the LSU PWB.
Detail
No full wave signal is detected
Section
ICU / P-CON
Cause
PCU PWB trouble.
Power unit trouble.
Harness trouble.
Power unit trouble.
Harness trouble.
Check &
Remedy
Remedy
Replace the PCU PWB. Replace the power unit.
Check connection of the connector and the harness.
Check connection of the connector and the harness.
Detail
The full wave signal is not detected (PCU detection)
Section
PCU
Cause
Disconnection or breakage of the connector to the PCU
PWB or the harness in the power unit.
PCU PWB trouble. Power unit trouble.
PWB or the harness in the power unit.
PCU PWB trouble. Power unit trouble.
Check &
Remedy
Remedy
Check connection of the harness and the connector.
Replace the PCU PWB. Replace the power unit.
Replace the PCU PWB. Replace the power unit.
MX-M1100 SELF DIAG AND TROUBLE CODE 8 – 28
L8-20
Power controller communication
trouble
trouble
U1-01
Battery abnormality
U2-00
EEPROM read / write error (ICU)
U2-05
HDD / SRAM Flash / EEPROM
discrepancy
discrepancy
U2-10
SRAM user authentication index
check sum error
check sum error
U2-11
Counter check sum error (ICU)
U2-22
SRAM memory check sum error (MFP)
U2-23
SRAM memory individual data check
sum error (MFP)
sum error (MFP)
U2-24
SRAM memory user authentication
counter check sum error
counter check sum error
U2-25
Flash memory user authentication
counter check sum error
counter check sum error
Detail
Communication establishment error / framing / parity/
protocol error
protocol error
Section
ICU
Cause
Connection trouble of the connector between the
mother board and the MFPC PWB.
MFPC PWB mother board connector pin breakage.
mother board and the MFPC PWB.
MFPC PWB mother board connector pin breakage.
Check &
Remedy
Remedy
Check connection of the connector between the mother
board and the MFPC PWB.
Check grounding of the machine.
board and the MFPC PWB.
Check grounding of the machine.
Detail
Backup SRAM battery voltage fall
Section
ICU
Cause
Battery life.
Battery circuit abnormality.
Battery circuit abnormality.
Check &
Remedy
Remedy
Check that the battery voltage is about 2.5V or above.
Detail
Read / write from / to the EEPROM device is failed
Section
ICU
Cause
EEPROM device trouble.
EEPROM device connection trouble.
Device access error due to noises
EEPROM device connection trouble.
Device access error due to noises
Check &
Remedy
Remedy
Replace the EEPROM device.
Check installation of the EEPROM device.
Replace the ICU PWB.
Check installation of the EEPROM device.
Replace the ICU PWB.
Detail
The HDD or the SRAM which differs from what was
installed before turning off the power is installed
installed before turning off the power is installed
Section
ICU
Cause
HDD replacement or SRAM replacement
Check &
Remedy
Remedy
Initialize the authentication information with Sim. 16.
Import the backup (export data by device cloning) if any.
Import the backup (export data by device cloning) if any.
Detail
User index information (user authentication basic data)
check sum error on the SRAM
check sum error on the SRAM
Section
ICU
Cause
SRAM trouble.
Control circuit malfunction.
ISU PWB SRAM access circuit trouble.
Control circuit malfunction.
ISU PWB SRAM access circuit trouble.
Check &
Remedy
Remedy
Use Sim. 16 to develop the user index information save
data from the HDD to the SRAM.
data from the HDD to the SRAM.
Detail
A check sum error of the counter information on the
EEPROM occurs
EEPROM occurs
Section
ICU
Cause
EEPROM device trouble.
EEPROM device contact trouble.
Device access error due to noises.
EEPROM device contact trouble.
Device access error due to noises.
Check &
Remedy
Remedy
Cancel the U2 trouble.
Detail
MFP PWB SRAM memory check sum error
Section
ICU / FAX
Cause
SRAM trouble.
Control circuit malfunction due to noises.
MFP PWB SRAM access circuit trouble.
Control circuit malfunction due to noises.
MFP PWB SRAM access circuit trouble.
Check &
Remedy
Remedy
Initialize the communication management table
registered in the SRAM and the FAX soft switch setting.
Since the registered contents are deleted, register the
deleted contents again.
Use Sim. 16 to cancel the U2 trouble.
Replace the MFP PWB.
registered in the SRAM and the FAX soft switch setting.
Since the registered contents are deleted, register the
deleted contents again.
Use Sim. 16 to cancel the U2 trouble.
Replace the MFP PWB.
Detail
MFP PWB SRAM memory individual data check sum
error (communication management table, sender
registration data, etc.)
error (communication management table, sender
registration data, etc.)
Section
ICU
Cause
SRAM trouble.
Control circuit malfunction due to noises.
MFP PWB SRAM access circuit trouble.
Control circuit malfunction due to noises.
MFP PWB SRAM access circuit trouble.
Check &
Remedy
Remedy
Turn OFF / ON the power to initialize the data related to
the content of check sum error.
Since the registered content is deleted, register the
deleted content again.
All the SRAM contents are set to 0 (default) in
production.
In this case, it is not treated as the U2-22 trouble, but
the SRAM contents are initialized by the software.
(The default values of the software are set.)
Use Sim. 16 to cancel the U2 trouble.
Replace the MFP PWB.
the content of check sum error.
Since the registered content is deleted, register the
deleted content again.
All the SRAM contents are set to 0 (default) in
production.
In this case, it is not treated as the U2-22 trouble, but
the SRAM contents are initialized by the software.
(The default values of the software are set.)
Use Sim. 16 to cancel the U2 trouble.
Replace the MFP PWB.
Detail
SRAM user counter check sum error
Section
ICU
Cause
SRAM trouble.
Control circuit malfunction due to noises.
ICU PWB SRAM access circuit trouble.
Control circuit malfunction due to noises.
ICU PWB SRAM access circuit trouble.
Check &
Remedy
Remedy
Recheck the check sum of the user counter with Sim.16
and save the normal sum value.
and save the normal sum value.
Detail
Flash use counter check sum error
Section
ICU
Cause
Flash trouble.
Control circuit malfunction due to noises.
ICU PWB Flash access circuit malfunction.
Control circuit malfunction due to noises.
ICU PWB Flash access circuit malfunction.
Check &
Remedy
Remedy
Recalculate the user counter check sum with Sim.16,
and save the normal sum value.
and save the normal sum value.
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