Paradyne COMSPHERE 3000 - Manual (Page 80)

Installation
3-53 3000-A2-GA31-80 December 1994
3. At the front of the carrier, hold the circuit card
vertically, with the latch on its faceplate in the
open position (Figure 3-37). Insert it into the top
and bottom card guides of one of the slots
numbered 1 through 16.
Slide the card into the slot until the power and
network connector seats firmly in the mating
connector on the backplane.
4. Press the latch to secure the circuit card in the
carrier, rotate the circuit pack lock back into the
closed position (refer to Figure 3-16) and tighten
the screw.
The carrier’s power transformer unit performs a
self-test routine. If the power transformer unit
passes the self-test routine, all indicators on the
faceplate light briefly.
If the LEDs on the circuit card do not light after
being installed in the carrier, there may be a
failure in the circuit card or in the carrier’s power
supply. Install the DSU or dial/lease modem in
another working carrier. If it works, or if a second
DSU or dial/lease modem installed in another slot
in the same carrier also does not light, check that
the power cable is properly attached and that the
ac outlet is active. If the power cable is properly
attached, the ac outlet is active, and the DSUs or
dial/lease modems still do not light up, check the
fuses on the power transformer unit (refer to
Figure 3-7). If the fuses are blown, replace the
fuses and determine the cause of the overload. If
the fuses are okay, replace the power transformer
unit.
5. Connect cabling, install ferrite chokes
(Figure 3-36), configure the unit, and perform
verification testing as described in the appropriate
Installation and Operation Manual or
Applications Guide.
To install the TDM (and MCMP) and digital
bridge interface cables:
a. Connect the 60-pin high-density interface
cable connector to the back of the installed
TDM or MCMP circuit card. The mating
connectors clip securely into place and cannot
be pulled free without squeezing the connector
clips together to release the cable.
b. Select the connector labeled Port 2, plug it
into the DTE that will communicate with the
TDM or MCMP circuit card over Port 2, and
use the small screwdriver to engage and
tighten the screws on either side of the
connector. Select the connector labeled Port 3
and attach it to the appropriate DTE as
described for Port 2, and so on, until all five
connectors are attached to DTEs.
If you are using a carrier assembly with an ac power
transformer unit, you must install the ferrite choke
supplied with the carrier assembly onto your ac power
cable. See Step 7 of the Modular Circuit Card Installation
section earlier in this chapter for instructions.