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
5-79Critical Reliability
5
Remove Module Control Carriers A and B
1. Remove the TDM/LAN cable from between the “A” and “B” c arriers. See
Figure 5-23. This cable will be reused .
2. Disconnect 1 end of the TDM/LAN c able (between the “A” and “D”
carriers) from the “A” carrie r. Leave the othe r end connected to the “ D”
carrier, and move the cab le into a position so that it will not interfere with
removing the “A” c arrier.
NOTE:
Note the position of the TDM/LAN cable b efore disconnecting .
3. Disconnect 1 end of the TDM/LAN c able (between the “B” and “C”
carriers) from the “B” carrie r. Leave the othe r end connected to the “ C”
carrier, and move the cab le into a position so that it will not interfere with
removing the “B” c arrier.
!CAUTION:

When removing the TDM/LAN cables from a previously up graded

carrier, be careful that none of the shor t pieces of shrink tubing c ome

off the 4 corner pins of the p in-field block. Otherwise, when th e new

equipment is connec ted, -48 volts could s hort to ground.

4. Remove and retain the 8 ground straps from b etween the “A” and “ B”
carriers. See Figure 5-24.
5. Disconnect 1 end of the 8 ground straps from between the “A” and “D”
carriers. These straps will reconnec t to the new “A” carrier.
6. Disconnect 1 end of the 8 ground straps from between the “B” and “C”
carriers. These straps will reconnec t to the new “B” carrier.
7. Disconnect the “P1” (small 9-pin) connector and the “P2” (large 38-pin)
connector from the “A” carrier. See Figure 5-25. Move the cables into a
position where they will not interfere with removing the c arrier.
8. Slide the latch up, and d isconnect the “P1” (smal l 9-pin) connector from
the “B” carrier. Move the c able into a position where it will not interfere with
removing the carrier.
9. Disconnect and remove the ICC c ables. See Figure 5-23. They will not be
reused.
10. Remove the fan trim plate by pulling it straight off.
11. Clean or replace the air filter (403326820) if necessary.
12. In front of carrier, remove the 4 screws (top 2 first) holding the “B” carrier
to the cabinet frame. Use a long -handle screwdriver or 5/16-inc h socket
with a 10-inch extension.
13. Behind the carrier, remove the 2 sc rews holding the “B” carrier’s rear
connector panel to the c abinet frame.