2-15 (E)
MAV-70
B401 (CR2025) on the SY-253 Board Replacement
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The battery B401 (CR2025) backs up the database of file.
Replace this battery within 24 hours after the SY-253
board is pulled out from the slot.
If 24 hours or more have passed, the backup data will be
lost.
Replacement part
Obtain a commercial lithium battery.
Part name :
Lithium battery
Specifications : Model
CR2025
Voltage
3 V
Capacity
120 mAH
Removal procedures
1.
Remove the SY-253 board. (Refer to the Section 2-5-
9.)
2.
Remove the battery.
Installation procedures
1.
Install a new battery on the SY-253 board.
At this time, put the lithium battery with the “+”
terminal side up.
2.
Insert the SY-253 board in its original slot.
Setting after replacement
It is not necessary to set after battery replacement.
2-4. Replacement of Main Parts
H
G
F
E
D
C
B
A
1
2
3
4
5
6
7
8
B401
CR2025
Raise the battery
while pushing in.
