Nortel DMS-100 Series Maintenance Manual page 329

14 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 SMS unit (0 or 1)
15 Set the PM 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
At the equipment frame
16
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.
WARNING
Equipment damage
Take the following precautions when removing or
inserting a card:
1. Do not apply direct pressure to the components.
2. Do not force the cards into the slots.
Put on a wrist strap.
17 Unseat the NT6X41 card.
18
Unseat the NTMX77 card.
19 Using a slot screwdriver, loosen the screws from the two brackets that secure
the NTMX71 card to the backplane in slot 19. Keep the screws in place on the
backplane.
DMS-100 Family SMS Maintenance Manual XPM10 and up
Card replacement procedures 7-123
SMS
NTMX71
(continued)