Nortel DMS-100 Series Maintenance Manual page 513

Screws
Connectors
Screws
FSP front panel shown
in the open position
12
Star Remote System card replacement procedures
Screws
NTTR74
alarm
card
Screws
NTTR75 maintenance
and fuses card
Remove the NTTR75 maintenance and fuses card by performing the
following steps:
a Disconnect the two cable connectors on the NTTR74 alarm card and
note the connector numbers.
b Using a Phillips head screwdriver, unscrew the four Phillips head screws
and remove the lock washers and flat washers that secure the NTTR74
alarms card to the NTTR75. Gently pull with a rocking motion until the
pins on the underside of the alarm card are clear of the connector
between the alarm card and the maintenance and fuses card.
c Carefully remove the alarm card.
DMS-100 Family NA100 Star Remote System XPM15 and up
Connector between alarm
card and maintenance and
fuses card
Screw
Connectors
Screw
Talk battery cable connector
is under ribbon cable to
alarm card
NTTR75
in a STAR
(continued)
NTTR76 talk battery and
circuit breaker cards
12-165