Backup Battery Replacement - Sony MAV-70 Manual

2-4. Replacement of Main Parts

2-4-6. Backup Battery Replacement

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Observe the following cautions. If not, bursting, ignition, and heating may occur in the battery.
. Do not charge, short, disassemble, deform, and heat the battery or put it in a fire.
. Replace the battery with the same type one or one specified by the manufacturer.
. Attach a tape to the plus + and minus _ terminals for insulation so that they do not touch other metals
or batteries when throwing the battery away.
c
Observe the following caution. If not, bursting and liquid leakage may occur in the battery.
. Set the polarity + of the battery toward the polarity + printing on the board.
The SY-253 board and PU-102 board have lithium batteries for data backup.
Board Ref.No. Item
Name
SY-253 B401 CR2025
B302 M4T28-BR12SH1
PU-102 B301 M4Z28-BR00SH1
*1 : The batteries of the MAV-70 are not consumed during the power to the board turned on. Therefore, this replacement cycle of the
battery indicates the period at which the power to the board is not turned on.
2-14 (E)
Battery-backed IC Stored data
IC406, 407, 414, 415, Database of
421, 422, 432, 433 file
IC302 Various setting
parameters of
the menus
IC301 Error information
of HDD
Recommended
Replacement Cycle *1
Three years
Ten years
Ten years
MAV-70