Nt6D65 And Ntrb34 Core To Network Interface Cards - Nortel Meridian 1 Hardware Replacement Manual

NT6D65 and NTRB34 Core to Network Interface Cards

Use this procedure to replace the Core to Network Interface (CNI) or Core to
Network Interface 3 (CNI-3) card. See Administration (553-3001-311) for a
description of all maintenance commands, and System Messages Guide
(553-3001-411) for interpreting system messages.
CAUTION
Service Interruption
Replacing the CNI card in a nonredundant system,
such as 51C, will disrupt system operation. If
possible, schedule the replacement at the lowest
traffic time (after midnight).
DANGER
Module covers are not hinged; do not let go of the
cover. Lift the cover away from the module and set it
out of your work area.
Before replacing a CNI or CNI-3 card, you can test it in an unused CNI slot (in
case, for example, there is a bent pin on the backplane). If the card works
correctly in the new slot, you can leave it there. To switch slots:
1 The Core associated with the CNI card must be inactive:
— If you need to switch Cores:
LD 135
SCPU
a. Set the NORM/MAINT switch to MAINT on the active CP card.
2 Software disable the CNI card:
DIS CNI c s
****
Replacing equipment
"c" is the CPU (0 or 1), "s" is the card slot (8–12)
exit LD 135
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Hardware Replacement