Nortel Meridian 1 Manual page 374

Upgrade system installation through x11 release 21

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21 Follow the appropriate step below to turn off power in each

Core/Network module:

With AC power, set the circuit breaker on the MPDU in the module

to OFF (down position).

With DC power, set the switch on the module power supply to OFF

(down position).

22 Label each card that is being transferred to a Core/Network module with

the shelf (0 or 1) and loop (0–31) for the card.

23 On all cards that are being transferred to Core/Network modules, disable

the faceplate switches, disconnect all cables, and remove the cards.

24 Connect all cables to the cards (including the NT8D86 cables from the

I/O panels to the QPC414 Network cards). Enable the faceplate switches.

25 Switch the cables at the PE end:

If NT9J96 cables inside the PE cabinets are not connected, connect

them to the faceplates of the appropriate QPC659 cards.

26 Turn on power to the cabinet:

Set the AC input circuit breaker on the –48V rectifier in the cabinet

Set the CAB INP circuit breaker on the power control shelf in the

cabinet and all other shelf circuit breakers to ON.

27 In the option 61C, verify that all cards are enabled (all ENB/DIS switches

are set to ENB).

28 Follow the appropriate step below to restore power in each

Core/Network module.

Note: If power to both Core/Network modules is restored

simultaneously, the CMDUs should still be synchronized.

For AC-powered systems, simultaneously set the MPDU in both

Core/Network modules to ON (up position).

For DC-powered systems, simultaneously set the switch on the

module power supply in both Core/Network modules to ON (up

Upgrade system installation Upgrading to Meridian 1 system options

SL-1 NT system upgrades

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