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AR-M550/M620  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 37

Main 
code

Sub 

code

Title

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 
code

Sub 

code

Title

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 

code

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 

Main 
code

Sub 

code

Title

AR-M550/M620  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 38

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Memory check sum error 
(PCU)
When POF data/counter 
data sum error is 
detected.

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

Control circuit runaway 
due to noises

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 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

SPF tray lift-up trouble
Lift-up trouble is detected 
5 times continuously.

Section

Scanner

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

STUD/STLD trouble
STUD does not turn on 
within the specified time.
STLD does not turn off 
within the specified time.

Remedy

Check the harness and 
the connector of the 
STUD and STLD.
Lift-up trouble unit check

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

SPF tray lift-down trouble
STLD does not turn off 
within the specified time.

Section

Scanner

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

STUD/STLD trouble
STUD does not turn on 
within the specified time.
STLD does not turn off 
within the specified time.

Remedy

Check the harness and 
the connector of the 
STUD and STLD.
Lift-up trouble unit check

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

LCC lift motor trouble
• The upper limit sensor 

does not turn on within 
24 sec after the lift 
motor is on.

• No rotation sensor 

signal is detected for 
0.2 sec or longer while 
the lift motor is on.

• The upper limit switch 

is on while the lift motor 
is on.

When the trouble occurs 
3 time continuously that 
the upper limit sensor 
does not turn on.

Section

LCC

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Sensor trouble
LCC control PWB trouble
Gear breakage
Lift motor trouble

Remedy

Use SIM to check the 
sensor detection.
Use SIM to check the lift 
motor operation.
Use SIM 15 to cancel the 
trouble.

Note 

AR-M550/M620  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 39

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

Communication trouble 
with the LCC.
Follows the 
communication protocol 
specifications.
Communication error, 
timing abnormality of the 
communication data and 
the communication signal 
line

Section

LCC

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Improper connection or 
disconnection of the 
connector and the 
harness
Desk control PWB trouble
Control PWB (PCU) 
trouble
Malfunction caused by 
noises

Remedy

Canceled by turning ON/
OFF the power.
Check the connector and 
the harness in the 
communication line.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

LCC transport motor 
trouble
The lock detection signal 
is detected continuously 
for 1sec after delay of 
1sec from start of the 
motor.

Section

LCC

Operation 
mode

Note 

Case 1

Trouble 
position/
Cause

Motor lock
Motor RPM abnormality
Overcurrent to the motor
Desk control PWB trouble

Remedy

Use SIM 4-3 to check the 
transport motor 
operation.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp
Message

Details

LCC 24V power 
abnormality addition
24V power is not supplied 
to the LCC. (the LCC 24V 
power is not detected for 
1 sec or longer after 1 sec 
from power on)

Section

LCC

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Improper connection or 
disconnection of the 
connector and the 
harness

Remedy

Check the connector and 
the harness of the power 
line.

Note 

Case 2

Trouble 
position/
Cause

LCC control PWB trouble
Power unit trouble

Remedy

Check the 24V power 
with the power unit and 
the LCC control PWB.

Note 

Main 
code

Sub 

code

Title

Phenomenon

Display

Lamp

Message

Details

Communication error with 
RIC (By PPC 
communication 
standards)
An error in the 
communication line test 
after turning on the power 
or canceling the 
simulation 

Section

Controller

Operation 
mode
Note 

Case 1

Trouble 
position/
Cause

Improper connection or 
disconnection of the 
connector and the 
harness
RIC control PWB trouble
Control PWB (MFP 
control) trouble
Malfunction caused by 
noises

Remedy

Canceled by turning ON/
OFF the power.
Check the connector and 
the harness in the 
communication line.

Note 

AR-M550/M620  SELF DIAG MESSAGE AND TROUBLESHOOTING  9 - 40

JAM code

Content

JAM detection method

JAM judge time (JAMTST - JAMJD)

JAM detection timer start 

trigger (JAMTST)

JAM judge dedtector 

(JAMJD)

55/62 PPM MODEL 

(335mm/s)

70 PPM MODEL 

(395mm/s)

TRAY1

Tandem tray 1 paper 
feed jam (PFD2 not-
reached)

T1PFC ON

PFD2 ON

1608ms

1516ms

PFD2_NT1

T1PFC ON

PFD2 ON

1608ms

1516ms

PFD2_NM1

PFD2 not-reached jam 
(Multi-stage tray 1 feed 
paper)

VPM ON (When the paper 
lead edge comes to 40mm 
in front of the transport 
roller 13, VPM turns ON.)

PFD2_NM1

541ms

480ms

PFD2_NM2

PFD2 not-reached jam 
(Multi-stage tray 2 feed 
paper)

VPM ON (When the paper 
lead edge comes to 40mm 
in front of the transport 
roller 13, VPM turns ON.)

PFD2_NM2

541ms

480ms

PFD2_NAD

PFD2 not-reached jam 
(ADU re-feed paper)

APPD2 ON

PFD2_NAD

819ms

710ms

PPD_NMF

PPD1 not-reached jam 
(Manual feed tray feed 
paper)

MPRD2 ON

PPD ON

429ms

364ms

PPD_NT1

PPD1 not-reached jam 
(Tandem tray 1 feed 
paper)

PFD2 ON

PPD ON

352ms

298ms

PPD_NT2

PPD1 not-reached jam 
(Tandem tray 2 feed 
paper)

MPRD2 ON

PPD ON

429ms

364ms

PPD_NM1

PPD1 not-reached jam 
(Multi-stage tray 1 feed 
paper)

PFD2 ON

PPD ON

352ms

298ms

PPD_NM2

PPD1 not-reached jam 
(Multi-stage tray 2 feed 
paper)

PFD2 ON

PPD ON

352ms

298ms

PPD_NLC

PPD1 not-reached jam 
(LCC paper feed paper)

MPRD2 ON

PPD ON

429ms

364ms

PPD_NAD

PPD1 not-reached jam 
(ADU re-feed paper)

PFD2 ON

PPD ON

352ms

298ms

POD1_N

POD1 not-reached jam

RRC ON

POD1 ON

943ms

800ms

POD2_N

POD2 not-reached jam

POD1 ON

POD2 ON

429ms

364ms

AINPD_N 
(Saddle)

ADU paper entry sensor 
not-reached jam 

DGS ON (When the paper 
lead edge is transported to 
30mm apart from the 
switchback operation start 
position.)

AINPD ON (Saddle)

435ms

435ms

AINPD_N (Other)

ADU paper entry sensor 
not-reached jam 

DGS ON (When the paper 
lead edge is transported to 
30mm apart from the 
switchback operation start 
position.)

AINPD ON (Other)

318ms

318ms

APPD1_N

ADU transport sensor 1 
not-reached jam

AINPD ON

APPD1ON

292ms

292ms

APPD2_N

ADU transport sensor 2 
not-reached jam

APPD1 ON + 90mm

APPD2 ON

375ms

375ms

DESK1

Multi-stage tray 1 paper 
feed jam (M1PFD not-
reached)

M1PFC ON

M1PFD ON

1531ms

1450ms

M1PFD_N1

M1PFC ON

M1PFD ON

1531ms

1450ms

DESK2

Multi-stage tray 2 paper 
feed jam (M2PFD not-
reached)

M2PFC ON

M2PFD ON

1531ms

1450ms

M1PFD_N2

M1PFD not-reached jam 
(Multi-state2 tray feed 
paper)

M2PFD ON

M1PFD ON

513ms

435ms

M2PFD_N

M2PFC ON

M2PFD ON

1531ms

1450ms