Nortel DMS-100 Series Replacement Procedures page 536

1-504 XPM card replacement procedures
NT2X70
in an SMA-MVI-20
15
16
17
18
19
20
At the MAP terminal
21
297-8021-547 Standard 14.02 May 2001
(continued)
Unseat but do not remove the NT6X69 Message Interface card and the
NT6X80 PCM Loss Addition card using the common unseating a card
procedure in this document.
Power down the unit by setting the ON/OFF switch on the power converter
faceplate slots 25 through 27 to the OFF position.
Both the converter FAIL LED and FRAME FAIL lamps on the frame
supervisory panel (FSP) turn ON. An audible alarm may sound.
If an alarm does sound, silence it by typing
>SIL
and pressing the Enter key.
Perform the common replacing a card procedure in this document.
Power up the power converter in the inactive SMA unit as follows:
a Ensure the power converter (NT2X70) is inserted. A major audible alarm
may sound. This alarm is silenced when power is restored to the
converter.
b Set the power switch on the power converter faceplate to the ON position.
Press the RESET button while setting the circuit breaker to the ON position.
Both the converter FAIL LED and FRAME FAIL lamps on the FSP turn OFF.
Reseat the NT6X69 Message Interface card and the NT6X80 PCM Loss
Addition card using the common reseating a card procedure in this document.
Use the following information to determine the next step.
If you were directed here from
alarm clearing procedures
other
Load the inactive SMA unit by typing
>LOADPM UNIT unit_no
and pressing the Enter key.
where
unit_no
is the number of the SMA unit busied in step 13
If load
passes
fails
Do
step 24
step 21
Do
step 22
step 27