Nortel DMS-100 Series Replacement Procedures page 1031

in an RSC-S (PCM-30) Model B RCO2
14 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.
b Close the locking levers.
15 Power up the inactive RCO2 unit as follows:
a Ensure the power converter (NTMX72) is inserted. A major audible
alarm may sound. This alarm is silenced when power is restored to the
converter.
b If the power converter you replaced is an NTMX72AA, set the POWER
switch to the ON position. Set the POWER switch to RESET when setting
the circuit breaker on the MSP to the ON position.
c If the power converter you replaced is an NTMX72AB, set the circuit
breaker on the MSP to the ON position for the NTMX72AB that was
powered down in step 11.
DMS-100 Family NA100 Card Replacement Procedures Volume 6 of 7 LET0015 and up
XPM card replacement procedures (continued) 1-999
NTMX72
(continued)