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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
5-47High Reliability
5
Disconnect Cables
1. With the cable retainer in front of you and the part number visible (4B or
4C), locate the slot that is almost vertical. This slot is adjacent to the part
number. Insert a #2 flat blade screwdriver into the slot and twist. The
retainer will snap open easily. Remove the cable.
2. Disconnect the cables associated with the carrier to be removed.
3. Remove the rear doors from the cabinet.
4. Remove all of the rear panels. Two different types of screws hold the
panels to the cabinet. Remove the #10 screws with a screwdriver or a
1/4-inch socket. Remove the #12 screws with a screwdriver or a 5/16-inch
socket.)
Remove Circuit Packs from Module Control
Carrier A
1. To ensure that power units in the “A” carrier are properly replaced, label
each power unit with its slot number.
2. Disconnect the power cords from the power units in the “A” carrier.
3. Remove all circuit packs and power units from carrier “A.” Store the circuit
packs in the static-proof packaging.
4. Remove the circuit pack blanks from the empty slots.
5. Remove the front trim plate from the “A” carrier by pulling it straight off.
Remove CURL from Module Control Carrier A
Remove the CFY1 current limiter (CURL) from the pin-field block marked “CURL”
on the “A” carrier. The CURL will be reused in the Release 8 EPN.
NOTE:
Verify that the CURL meets the minimum usable vintage requirements.
Remove Module Control Carrier A
NOTE:
Note the position of each TDM/LAN cables before disconnecting.
1. Disconnect both TDM/LAN cables from the “A” carrier. See
Figure 5-10
.
Leave the other end connected to the “C” carrier.
!
CAUTION:
When removing the TDM/LAN cables from a previously upgraded
carrier, be careful that none of the short pieces of shrink tubing come
off the 4 corner pins of the pin-field block. Otherwise, when the new
equipment is connected, -48 volts could short to ground.