Sony LMT-300, Service Manual

Page: 55 / 92

3-9 (E)
LMT-300
3-4-3. Backup Battery
The lithium battery for backup is attached to the CN-3058 board of this unit.
If the battery is running low, the ALARM indicator (D112) on the DP-455 board is lit to notice the prob-
lem. (Refer to Section 1-4-2.) Check this before replacing the battery.
Board Ref. No. Product name Board backup Saved data
CN-3058 BT100 CR-2450 PU-131 Data such as HDD information
BT101 CR-2450 SSP-27/27A/27B System data
The battery will not be drained much while the power is supplied to the board, but it is recommended that you replace the battery every
fi ve years.
Replacement part
Purchase a commercially-available battery.
Type name :
Lithium battery
Battery speci fi cations : Product name CR-2450 (
!
1-528-229-61)
Voltage 3 V
Capacity 550 mAH
w
The battery may result in explosion, fi re or heat if the following precautions are not observed:
.
Do not charge, short, disassemble, deform, heat or throw it into a fi re.
.
Use the same type of battery or its equivalent as that speci fi ed by the manufacturer of the machine.
.
Before discarding the battery, stick tape over the positive and negative terminals to prevent them touch-
ing other metal or batteries.
c
The battery may result in explosion or liquid leakage if the following precaution is not observed :
.
Carefully connect the battery with the correct positive and negative polarities.