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AR-BC320 TROUBLESHOOTING 11 - 23
Main
code
Sub
code
Title
RTC read trouble
U1
02
Display
Lamp/Message
Phenomenon Detail
Abnormal value is read
from the RTC on the ICU
PWB.
Section
—
Case 1
Cause
RTC circuit abnormality
Check &
Remedy
Set the time again with the
key operation, and check
that time advances
properly.
Check the RTC circuit.
Main
code
Sub
code
Title
EEPROM read/write error (ICU
detection)
U2
00
Display
Lamp/Message
Phenomenon Detail
EEPROM version error
EEPROM write error
Section
—
Case 1
Cause
EEPROM trouble.
EEPROM is not initialized.
Check &
Remedy
1. Check that the
EEPROM is properly
set.
2. Use SIM 16 to cancel
the error.
Case 2
Cause
ICU PWB EEPROM
access circuit trouble
Check &
Remedy
1. To prevent against
deletion of the counter
data and the adjustment
data, record them with
the simulation. (When a
printer option is
installed, use SIM 22-1
to record the counter
data and the adjustment
data.)
2. Replace the ICU PWB.
3. Use SIM 16 to cancel
the error.
Main
code
Sub
code
Title
EEPROM check sum error (ICU
detection)
U2
11
Display
Lamp/Message
Phenomenon Detail
EEPROM (ICU) check sum
error
Section
—
Case 1
Cause
EEPROM trouble
Check &
Remedy
1. Check that the
EEPROM is properly
set.
2. Use SIM 16 to cancel
the error.
Case 2
Cause
Control circuit freeze by
noises.
ICU PWB EEPROM
access circuit trouble.
Check &
Remedy
1. To prevent against
deletion of the counter
data and the adjustment
data, record them with
the simulation. (When a
printer option is
installed, use SIM 22-1
to record the counter
data and the adjustment
data.)
2. Replace the ICU PWB.
3. Use SIM 16 to cancel
the error.
Main
code
Sub
code
Title
Production No. data discrepancy
U2
30
Display
Lamp/Message
Phenomenon Detail
The production No.
recorded in the PCU differs
from that recorded in the
ICU.
Section
—
Case 1
Cause
EEPROM is not
exchanged when replacing
the PCU/ICU PWB.
Check &
Remedy
Check that the EEPROM is
properly installed. When
replacement, check that
the EEPROM before
replacement is inserted to
the board after
replacement.
Summary of Contents for AR-BC320
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