Nortel DMS-100 Series Maintenance Manual page 522

12-174 Star Remote System card replacement procedures
NTTR76
in a STAR
(continued)
12
FSP front panel shown
in the open position
13
297-8353-550 Standard 05.01 March 2001
With the FSP front panel open, locate the NTTR76 talk battery and circuit
breaker cards. Use the following diagram to assist you. Determine the
correct card to remove, based on whether the problem is related to the A or
the B feed or a defective circuit breaker. Note in the following diagram where
the NTTR76 cards are labeled A and B and the unit number they support.
The A relates to the A feed and the B relates to the B feed.
NTTR74
alarm
card
Screw
NTTR75 maintenance
and fuses card
Remove the appropriate NTTR76 card by performing the following steps:
a Disconnect the four cable connectors on the NTTR76 card.
b Remove the cover.
Connectors
Screw
B – unit 1
A – unit 0
Talk battery cable
connector
Connectors
Screw
Screws
1
3
2
2
Screw
NTTR76 talk
battery and
circuit breaker
cards