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-94 board.w
Replace the battery with the following as shown in the part list.For your safety, turn off the power and unplug the power
Backup battery : Nickel-cadmium batteryplug from the outlet before starting the replacement.
SpecificationsModelGB50H
Voltage 3.6 V
Replacement
Capacity 50 mAh
1. Remove the top plate. (Refer to O2-1. Removal of
Sony Part No. : 1-528-202-11
Cabinet�.)
2. Remove the two screws, then take out the DC fan
m
cover.
Y The battery is guaranteed for the life of three years under
3. Disconnect the connector (CN2) on the DUS-971
normal condition of usage. Replace the battery within
board.
three years. If the battery runs down, turning off the
4. Replace and attach the DC fan in the reverse order of
power stops the function of internal clock.
steps 1 to 3.
Y When the optional BKDS-RS1690 is not mounted,
m
battery replacement deletes the crosspoint data.
Y Install the DC fan in position the air blowing to rear.
(For details on data setting, refer to the supplied Installa-
Y Hold the cable by the harness clamper to keep the cable
tion Manual for software.)
away from the DC fan.
Replacement
Air flow
1. Turn off the power.DUS-971 board
2. Pull out the CPU-94 board.
CN2
Rotative
3. Replace the battery (BT1) on the CPU-94 board.
direction
m
of Fan
Y Set the polarity (+) of the battery to the polarity (+) ofDC fan
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.
Note : some areas, the disposal of nickel-cadmium batteriesIn
B 4X30
in household or business trash may be prohibit.
CPU-94 board (A SIDE)SF80 FAN MOTOR5V DC 500mAMATSUSHITA
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-V3232 |
ACEC
