Nortel DMS-100 Series Maintenance Manual page 340

7-134 Card replacement procedures
NTMX77
SMS
(continued)
14
15
297-8231-550 Standard 09.01 August 1998
WARNING
Possible loss of P-side nodes
Monitor the LEDs on the faceplate of the replacement
NTMX77 when installing.
1. The INSV and ESA LEDs may come ON and must
go OFF in less than 4 seconds.
2. The ACT LCD may come ON and light for less
than 1 second. If the ACT LED remains ON for more
than 1 second, immediately remove the NTMX77 card
and return to step 13 c. with a new NTMX77 card. If
the NTMX77 card is allowed to remain with both
units having an active processor, this is a condition of
dual activity, which will result in the loss of P-side
nodes. If the switches are set correctly reject the
faulty card.
Open the locking levers on the replacement card. Align the card with the slots
in the shelf and gently slide the card into the shelf.
Seat and lock the card.
a. Using your fingers or thumbs, push on the upper and lower edges of the
faceplate to ensure the card is fully seated in the shelf.