DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115 Issue 1
April 2000
Adding or Removing Cabinet Hardware
6-114Add a Switch Node Carrier (High or Critical Reliability)
6
Install New Switch Node Carrier D
1. Install the J58890SA switch node carrier in position “D” b y lining up the
plastic alignment tip s on the top rear of the carrier with the sc rew holes in
the cabinet. These alignment tip s will support the c arrier while the screws
are being replaced . Ensure that the power cords are p roperly placed in
the slots at the sides of the carrier.
2. Fasten the carrier into position with 4 self-tap ping screws saved from the
removal of the old carrier.
!CAUTION:

Carefully realign the threads on the self-tap ping screws by t urning

them clockwise 1 turn b efore tightening them to avoid str ipping the

threads out of the framework.
3. Behind the carrier in a “DEFINITY style” cabinet, replace the 2 screws
saved from the removal of the old c arrier.
4. Connect the “P1” (small) con nector to the “D” c arrier. If necessary, to get
enough slack in the cab les, cut the tie wrap hold ing the intercabinet c able
from the upright in the area being installed. Snap the connec tor lock into
place to ensure the connec tion is properly made.
5. Connect the 8 ground strap s from either the “A” carri er or the enhanced
fan unit to the new "D" carrier. See Figure 6-38. These straps were left
connected when the old “D” carrier was removed .
6. Connect the 8 ground strap s from the “E” carrier (if installed ) to the new
“D” carrier. See Figure 6-38. These straps we re left connected to the “ E”
carrier when the old “D” carrier was removed.
7. For a standard AC-powered c ontrol carrier, install the 4 carri er ground
straps. The straps connect g round points G1 and G8 from the top of the
B-carrier backp lane to the B-carrier connec tor panel bracket and ground
points G9 and G16 from the bottom of the B-carrier backp lane to the
B-carrier connector p anel bracket.
For an enhanced carrier, install the 16 c arrier-ground straps . The straps
connect ground p oints G1 through G8 from the top of the B- carrier
backplane to the B-c arrier connector pa nel and ground p oints G9 through
G16 from the bottom of the B-carrier bac kplane to the B-carrier connec tor
panel . Use the 8 screws to conne ct the ground strap s to the connector
panel (see Figure 6-40).
NOTE:
An enhanced carrier is u sed only in an R8r PPN cabinet that uses
either AC power (U.S.) or Global power.
NOTE:
DC-powered cabinets DO NOT use any of the above carrier-ground
straps.