Nortel DMS-100 Series Maintenance Manual page 557

b Open the locking levers on the damaged card and carefully pull the card
towards you until it clears the shelf.
c Make sure that the replacement card has the same PEC and suffix as the
card you just removed. Also make sure that all DIP switches on the
replacement card match settings of the card just removed.
7 Open the locking levers on the replacement card.
a Align the card with the slots in the shelf and carefully slide the card into
the shelf.
OPM card replacement procedures
DMS-100 Family OPM Maintenance Manual XPM14 and up
in an OPM HIE
8-217
NTMX45
(continued)