Nortel DMS-100 Series Replacement Procedures page 363

At the equipment frame
10 Hang a sign on the active unit bearing the words: Active unit—Do not touch.
This sign should not be attached by magnets or tape.
At the MAP terminal
11 Observe the MAP display and determine the state of the inactive unit.
If state is
SysB, CBsy, ISTb, or
InSv
ManB
12 Busy the inactive PM unit by typing
>BSY UNIT unit_no
and pressing the Enter key.
where
unit_no
is the number of the inactive SMA unit (0 or 1)
At the equipment frame
13
Unseat but do not remove the NT6X41 Host Link Formatter circuit card, and
the NT6X80 PCM Loss Addition circuit card using the common unseating a
card procedure in this document.
14 Remove the faulty NTAX74 card using the common replacing a card
procedure in this document.
DMS-100 Family NA100 Card Replacement Procedures Volume 6 of 7 LET0015 and up
XPM card replacement procedures (continued)
Do
step 12
step 13
DANGER
Static electricity damage
Before removing any cards, put on a wrist strap and connect
it to the wrist strap grounding point on the frame supervisory
panel (FSP). This protects the equipment against damage
caused by static electricity.
NTAX74
in an SMA
(continued)
1-331