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SAMSUNG DCS 70
INSTALLATION MANUAL
CAUTION. The legs of the hybrids are fragile and the
hybrids should be inserted and removed from the cards
gently. Do not bend or straighten the legs since this could
NOTE : AUTOGUARD ON THE 3TRK, 4TRK24 & 6TRK(D70&24) CARDS
The 3TRK, 4TRK24, 6TRK24 and 6TRKD70 cards check for battery on the exchange lines
before making an outgoing call. A display station will display 'Out of Service' and give NU
tone if the exchange line seized for the outgoing call has less than 6mA line current. The
KSU will automatically retest every 200 seconds any line that has been placed out of service.
The line cannot be seized for an outgoing call by another station until it has been brought
back into service.
An incoming call, powering down the system or waiting 200 seconds will bring the line into
service.
DCS 70 POWER SUPPLY & FUSING
The DCS 70 system is shipped with the power supply already fitted to the system. The
power supply includes four fuses (Figure 4-3) which should be checked if there is a suspected
power supply problem.
To remove the PSU cover to check the fuses, turn the system off at the GPO and the system
ON/OFF switch and remove the four screws fixing the power supply cover (Refer to Figure
4-4). Disconnect the cables in connectors 1 and 2, taking care not to strain any of the wiring
or connectors and remove the power supply cover. Ensure that any replacement fuse is the
same type and value as the one being replaced. (250VAC 3.15 amp for the active and neutral
mains input and 250 VAC 2 amp for the -55VDC output and Battery input)
The DCS 70 employs fuses in both the mains ACTIVE and
NEUTRAL legs. Turn OFF the switch on the KSU and at the GPO
prior to any work on the system power supply.
POWERING UP THE SYSTEM
During the initial installation, disconnect the cables to the SDF.
Verify that the MEM card battery switch is OFF.
Power the system on and check that the green LEDS for AC and DC (above the ON/OFF
switch) on the power supply come on. The LEDs will light steady to confirm the presence of
power. If the AC LED is off and the DC LED is on this indicates the system is operating off
external batteries.
Check that the RUN LED on the MEM card flashes 10s after power on. Set the BACK UP
switch on the MEM card to ON.
cause them to fracture.
WARNING
Page 4-8
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10
January, 2000
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