Nortel DMS-100 Series Maintenance Manual page 419

b Open the locking levers on the card to be replaced and gently pull the
card towards you until it clears the shelf.
c Ensure that the replacement card has the same PEC including suffix, as
the card you just removed.
DMS-100 Family OPM Maintenance Manual XPM14 and up
OPM card replacement procedures
in an OPM RMM
8-79
NT2X90
(continued)