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Section 1
Service Overview
1-1. Backup Battery ReplacementReplacement Procedures
A RAM backup battery is mounted on the BKSI-2040n
(CPU-190 board).There is a possibility that the backup RAM data will be
Be sure to replace with the specified battery as shownlost when the battery is replaced.
below.As for the storing the RAM data, refer to the manual
supplied with software (BSS-100, etc.) which is installed
Part Name : Lithium battery (CR-2450)in the BKSI-2040.
Part No.: 1-528-229-31
1. Turn the SIU-80 power off, and remove the front panel
The battery is guaranteed for ten years on usually use.and shield plate.
Check the voltage with the voltmeter, and replace the(Refer to the Installation Manual supplied with SIU-
battery with the new one when the voltage is 2.4 V or less80.)
(normal voltage is 3 V).2. Remove the CPU-190 board (BKSI-2040) from the
front slot of SIU-80.
3. Remove the screws (+PTTWH 3´6) and shield plate
Voltage Check
from the board.
Test Points4. Remove the battery soldered on the board, being
Y Positive (+) pole of batterycareful not to touch any conductive parts other than the
Y Checker chip (E2)battery.
5. Check the polarity of the new battery and solder the
battery onto the board.
Voltmeter
wwwwwfor battery
Y Never charge, short-circuit, disassemble, deform, heat or
dispose of in fire.
Battery (BT1)Y Replace with the same model or an equivalent stipulated
H
�O+� terminalby the manufacturer.
G
+
Y Firmly cover the O+� and O�� poles with insulating tape
during disposal to avoid them coming into contact with
A
any metallic objects or other batteries.
CPU-190 board
Checker chip
cccccfor battery
(E2)O�� terminal
Y Ensure that the batteries are installed with the O+� and
O�� poles connected to the correct terminals.
1. Contact the O+� terminal of the voltmeter to the O��
pole of the battery, and O�� terminal of the voltmeter
to the checker chip.
2. Check the voltage and replace the battery with the new
one when the voltage is 2.4 V or less.
BKSI-20401-1(E) |
ACEC
