Installing The Connector Housings; Converting The Hardware - Nortel Meridian 1 Manual

Installing the connector housings

The connector housings connect cables in the peripheral cabinets to cables
from the option 61C, while also reducing electromagnetic interference (EMI).
Housings are installed on the peripheral cabinet: On cabinets with a top I/O
panel, the housing is installed on top of the cabinet; on cabinets with cover
plates on the cabinet side panel, the housing is installed on the side panel.
Both housings can accommodate six cables. These are the connector housing
kits:
— P0696547 side-mounted connector housing
— P0702380 top-mounted connector housing
Note: For a detailed description of connector housings and installation
procedures, refer to Upgrade engineering (553-3001-150).

Converting the hardware

Continuing with the upgrade will disrupt system operation. Minimal
service can be maintained if a power failure transfer unit (PFTU) is
installed.
Preparing the A system for upgrade
1 Set all shelf circuit breakers to OFF.
2 Set the –48V Cabinet Input circuit breaker on the QBL3 power
distribution box in the CE cabinet to OFF.
3 Set the AC input circuit breaker on the rectifier to OFF.
4 Remove the cable between the QPC33 Tape Interface card and the tape
unit on the CE shelf.
5 Tag and disconnect all cables from the connectors on the QPC45,
QPC139, and QPC50 cards.
6 Remove the tape from the tape unit.
7 Tag and disconnect the cables from the front of all cards on the QSD18
CE shelf, the QSD19 CE shelf, and the QSD2 CE shelf, if equipped.
Upgrade system installation Upgrading to Meridian 1 system options
SL-1 A, M, S, and MS system upgrades
CAUTION
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