Nortel DMS-100 Series Replacement Procedures page 331

c Make sure the replacement card has the same PEC and PEC suffix, as
the card you removed. Make sure all replacement card DIP switch
settings match settings of the card you removed.
Note: If the NTAX74 circuit card has a DIP switch, set the DIP switch
S1 to the common peripheral module (CPM).
15
Open the locking levers on the replacement card.
a Align the card with the slots in the shelf.
b Carefully slide the card in the shelf.
DMS-100 Family NA100 Card Replacement Procedures Volume 6 of 7 LET0015 and up
XPM card replacement procedures (continued)
in an RSC-S (DS-1) Model B RCC2
DANGER
Possible loss of P-side nodes
When you install the replacement NTAX74, monitor the
LEDs on the faceplate of the NTAX74 for the following
indicators:1. The INSV and ESA LEDs come ON and
remain ON until loading begins.2. The ACT LED can come
ON and light for less than 1 s. If the ACT LED remains ON
for more than 1 s, remove the NTAX74 circuit card and
return to this step. If the NTAX74 circuit card remains with
both units that have an active processor, a condition of dual
activity occurs. This condition causes the loss of P-side
nodes.
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NTAX74
(continued)