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AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 33

Main 
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Phenomenon

Display

Lamp
Message

Details

The copy inhibit 
command is received 
from the RIC (host). (By 
PPC communication 
standards.)

Section

Controller

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Judged by the host.

Remedy

Notification to the host

Note 

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Phenomenon

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Message

Details

FAX battery abnormality
FAX backup SRAM 
battery voltage fall

Section

FAX

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Battery life

Remedy

Check that the battery 
voltage is about 2.5V or 
above.

Note 

Case 2

Trouble 
position/
Cause

Battery circuit trouble

Remedy

Check the battery circuit.

Note 

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Phenomenon

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Lamp

Message

Details

RTC read error 
(combined use as FAX, 
on MFP control PWB)
The read value from the 
RTC on the MFP control 
PWB is abnormal such as 
“EE”h.

Section

Controller

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

RTC circuit trouble

Remedy

Make the time setup 
again with the key 
operation and check that 
the time advances 
normally.
Check the RTC circuit.

Note 

Case 2

Trouble 
position/
Cause

Battery voltage fall

Remedy

Check that the battery 
voltage is about 2.5V or 
above.

Note 

Case 3

Trouble 
position/
Cause

Battery circuit trouble

Remedy

Check the battery circuit.

Note 

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Phenomenon

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Lamp

Message

Details

EEPROM write error

Section

Controller

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble

Remedy

Check that the EEPROM 
is properly installed.
In the simulation to 
prevent against delete of 
the counter data/
adjustment values, write 
down the counter/
adjustment values.

Note 

Case 2

Trouble 
position/
Cause

Insertion of EEPROM 
which is not initialized

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

MFP control PWB 
EEPROM access circuit 
trouble

Remedy

Replace the MFP control 
PWB.

Note 

Main 
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AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 34

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Counter data area check 
sum error

Section

Controller

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble

Remedy

Check that the EEPROM 
is properly installed.
In the simulation to 
prevent against delete of 
the counter data/
adjustment values, write 
down the counter/
adjustment values.

Note 

Case 2

Trouble 
position/
Cause

Control circuit runaway 
due to noises

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

MFP control PWB 
EEPROM access circuit 
trouble

Remedy

Replace the MFP control 
PWB.

Note 

Main 
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Sub 

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Title

Phenomenon

Display

Lamp

Message

Details

Adjustment value data 
area check sum error

Section

Controller

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble

Remedy

Check that the EEPROM 
is properly installed.
In the simulation to 
prevent against delete of 
the counter data/
adjustment values, write 
down the counter/
adjustment values.

Note 

Case 2

Trouble 
position/
Cause

Control circuit runaway 
due to noises

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

MFP control PWB 
EEPROM access circuit 
trouble

Remedy

Replace the MFP control 
PWB.

Note 

Main 
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Sub 

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Phenomenon

Display

Lamp
Message

Details

MFPC section SRAM 
memory check sum error
SRAM check sum error 
when turning on the 
power.
(If this error occurs, 
initialize the one-touch 
dial and the FAX soft 
switches.)

Section

Controller

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

SRAM trouble

Remedy

Initialize the 
communication 
management table 
registered in the SRAM 
and the FAX soft switch.
Since the registered data 
are deleted, register the 
data again.

Note 

Case 2

Trouble 
position/
Cause

Control circuit runaway 
due to noises

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

MFP control PWB 
EEPROM access circuit 
trouble

Remedy

Replace the MFP control 
PWB.

Note 

AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 35

Main 
code

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Phenomenon

Display

Lamp
Message

Details

Check sum error for every 
individual data in SRAM 
of the MFPC section 
when turning on the 
power
(If this error occurs, 
initialize the data related 
to the check sum error. 
(Communication 
management table, 
sender’s information, etc.)

Section

Controller

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

SRAM trouble

Remedy

Automatically initialize the 
data related to the check 
sum error by turning OFF/
ON the power.
Since the registered data 
are deleted, register the 
data again.

Note 

Case 2

Trouble 
position/
Cause

Control circuit runaway 
due to noises

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

MFP control PWB 
EEPROM access circuit 
trouble

Remedy

Replace the MFP control 
PWB.

Note 

Main 
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Sub 

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Title

Phenomenon

Display

Lamp
Message

Details

Check sum error for 
every individual data in 
HDD of the MFPC section 
when turning on the 
power
(If this error occurs, 
initialize the data related 
to the check sum error. 
(One-touch, group, 
program, etc.)

Section

Controller

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

HDD write/read error

Remedy

Automatically initialize the 
data related to the check 
sum error by turning OFF/
ON the power.
Since the registered data 
are deleted, register the 
data again.

Note 

Case 2

Trouble 
position/
Cause

Control circuit runaway 
due to noises

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

MFP control PWB HDD 
access circuit trouble

Remedy

Replace the HDD.
Replace the MFP control 
PWB.

Note 

AR-M550/M620/M700  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 36

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Phenomenon

Display

Lamp
Message

Details

EEPROM red/write error 
(Scanner)
EEPROM communication 
trouble (NACK detection) 
Retry 3 times

Section

Scanner

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble

Remedy

Check that the EEPROM 
is properly installed.
In the simulation to 
prevent against delete of 
the counter data/
adjustment values, write 
down the counter/
adjustment values.

Note 

Case 2

Trouble 
position/
Cause

Insertion of EEPROM 
which is not initialized

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

Scanner PWB EEPROM 
access circuit trouble

Remedy

Replace the scanner 
PWB.

Note 

Main 
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Phenomenon

Display

Lamp
Message

Details

Memory check sum error 
(Scanner)
When counter data sum 
error is detected.

Section

Scanner

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble

Remedy

Check that the EEPROM 
is properly installed.
In the simulation to 
prevent against delete of 
the counter data/
adjustment values, write 
down the counter/
adjustment values.

Note 

Case 2

Trouble 
position/
Cause

Control circuit runaway 
due to noises

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

Scanner PWB EEPROM 
access circuit trouble

Remedy

Replace the scanner 
PWB.

Note 

Main 
code

Sub 

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Title

Phenomenon

Display

Lamp

Message

Details

EEPROM read/write error 
(PCU)
EEPROM communication 
trouble (NACK detection) 
Retry 3 times

Section

Engine

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

EEPROM trouble

Remedy

Check that the EEPROM 
is properly installed.
In the simulation to 
prevent against delete of 
the counter data/
adjustment values, write 
down the counter/
adjustment values.

Note 

Case 2

Trouble 
position/
Cause

Insertion of EEPROM 
which is not initialized

Remedy

Use SIM 16 to cancel the 
U2 trouble.

Note 

Case 3

Trouble 
position/
Cause

PCU PWB EEPROM 
access circuit trouble

Remedy

Replace the PCU PWB.

Note 

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