DEFINITY Enterprise Communications Server Release 8.2
Upgrades and Additions for R8r
555-233-115 Issue 1
April 2000
Multicarrier G2 Universal Module to R8r EPN
5-51High Reliability
5
Unpack and Inspect Expansion Control Carrier
1. Inspect the new J58890AF Expansion Control Carrier for any d amage.
Also verify that the backplane pins are not bent.
2. Place the expansion control carrie r on the floor so that the rear of the
carrier faces up.
3. Install the CFY1 current limiter (CURL) on the “A” carrier to the p in-field
block marked “ CURL.” Install the CURL with the components on the left.
4. At the rear connector panel, d etermine which connec tors will have a cable
attached, and install a 4B cable retainer on each of these c onnectors.
Install New Expansion Control Carrier A
1. Install the carrier in position “ A” by aligning the plastic alignment tip s on
the top rear of the carrier with the screw h oles in the cabinet. These
alignment tips supp ort the carrier while installing the screws. Ensure that
the power cords are prop erly placed in the slots at the s ides of the carrier.
2. Fasten the carrier into position with the 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 turning

them counterclockwise 1 tur n before tightening them to avoid

stripping the threads out of the framework.

3. Behind the carrier, replac e the 2 screws saved from the removal of the old
carrier.
4. Connect the “P2” and “ P1” cables to the “A” carrier. See Figure 5-12.
Snap the connector lock into place to ensure the connec tion is properly
made.
5. Connect the “P1” cab le to the “C” carrier. Snap t he connector lock into
place to ensure the connec tion is properly made.
6. Connect the 8 ground strap s from the “D” carrier to the new “ A” carrier
See Figure 5-11. These straps were left connected to the “D” carrier.
7. Connect the 8 ground strap s from the “C” carrier to the new “ A” carrier.
These straps were left connected to the “C” carrier.
8. For an AC-powered system, install the 2 new carrier ground straps. One
strap connects g round point “1” to the A-carrier frame (right side), and the
other connects ground point “8” to the A-c arrier frame (left side).
NOTE:
DC-powered carriers d o not use these carrier ground strap s.