Sharp AR-M550N - Page 391

AR-M550/M620/M700 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 36
Main
code
Sub
code
Title
EEPROM red/write error (Scanner)
U2 80 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
Memory check sum error (Scanner)
U2 81 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
U2 81 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
EEPROM read/write error (PCU)
U2 90 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
Memory check sum error (Scanner)