Nortel DMS-100 Series Maintenance Manual page 338

7-132 Card replacement procedures
NTMX77
SMS
(continued)
At the MAP terminal
9
10
At the frame
11
12
13
297-8231-550 Standard 09.01 August 1998
Busy the inactive SMS unit by typing
>BSY UNIT unit_no
and pressing the Enter key.
where
unit_no is the number of the faulty SMS unit
Set the unit to the ROM level by typing
>PMRESET UNIT unit_no NORUN
and pressing the Enter key.
where
unit_no is the number of the faulty SMS unit
WARNING
Static electricity damage
Before removing any cards, put on a wrist strap and
connect it to the wrist strap grounding point on the left
side of the frame supervisory panel of the SMS. This
protects the equipment against damage caused by
static electricity. When removing or inserting a card,
do not apply direct pressure to the components and do
not force the cards into the slots.
Put on a wrist strap.
Unseat the NT6X41 card.
CAUTION
Service disruption
If the replacement MX77 card you are installing has
dip switch S1, ensure dip switch S1 is in the XPM
position. If switch S1 is not in the XPM position, the
active unit will go out-of-service, thereby interrupting
call processing.
Remove the NTMX77 card as shown in the following figures.