2-5. Backup Battery Replacement
2-6. DC Fan Motor Replacement
2-5. Backup Battery Replacement2-6. DC Fan Motor Replacement
RAM backup battery (BT1) is mounted on the CPU-94w
board. Replace the battery with the following as shown inFor your safety, turn off the power and unplug the power
the part list.plug from the outlet before starting the replacement.
Backup battery : Nickel-cadmium battery
SpecificationsModelGB50H
Replacement
Voltage 3.6 V
1. Remove the top plate. (Refer to O2-1. Removal of
Capacity 50 mAh
Cabinet�.)
Sony Part No. : 1-528-202-11
2. Remove the two screws, then take out the DC fan
cover.
m
3. Disconnect the connector (CN2) on the DUS-971
Y The battery is guaranteed for the life of three years under
board.
normal condition of usage. Replace the battery within
4. Replace and attach the DC fan in the reverse order of
three years. If the battery runs down, turning off the
steps 1 to 3.
power stops the function of internal clock.
m
Y When the optional BKDS-RS1690 is not mounted,
Y Install the DC fan in position the air blowing to rear.
battery replacement deletes the crosspoint data.
Y Hold the cable by the harness clamper to keep the cable
(For details on data setting, refer to the supplied Installa-
away from the DC fan.
tion Manual for software.)
Air flow
Replacement
DUS-971 board
1. Turn off the power.
CN2
Rotative
2. Pull out the CPU-94 board.
direction
3. Replace the battery (BT1) on the CPU-94 board.of Fan
mDC fan
Y Set the polarity (+) of the battery to the polarity (+) of
the board at soldering.DC Fan cover
Y Nickel-Cadmium batteries are recyclable.
You can help preserve our environment by returning
your unwanted batteries to your nearest Sony Service
Center or Factory Service Center for collection, recy-
cling or proper disposal.
B 4X30
Note : some areas, the disposal of nickel-cadmium batteriesIn
in household or business trash may be prohibit.
SF80 FAN MOTOR
5V DC 500mAMATSUSHITA
CPU-94 board (A SIDE)
BT1
BT1
4. After Battery Replacement
Y When the optional BKDS-RS1690 is mounted, execute
OG: UPDATE BACKUP CONTROLLER� from the
primary station control terminal.
Y When the optional BKDS-RS1690 is not mounted,
execute OT: SET CLOCK� from the primary station
control terminal.
(For more details, refer to O5-1. Setting Items of the
Primary Station� in the Installation Manual.)
2-4(E)BVS-A3232 |
ACEC
