Nortel DMS-100 Series Maintenance Manual page 511

5 To offline the STAR containing the faulty card, type
>OFFL PM
and press the Enter key.
At the SRHE frame
6 Disconnect the power from the PDC to the Star Hub.
7 On the FSP front panel, power down the ringing generators, power
converters, line drawers and NTTR73 universal maintenance pack (UMP) in
the control shelf by setting the circuit breakers listed in the following table to
the Off position.
If Circuit breaker label
PS00, Slot 3
PS01, Slot 5
PS10, Slot 20
PS11, Slot 18
Ring 0, Slot 1
Ring 1, Slot 22
Talk A
Talk B
8 Use a fuse puller to remove the following fuses on the FSP front panel
• one -48 V alarm and battery supply (ABS) fuse
• one -48 V LED
• two -48 V to universal maintenance packs (UMP)
• eight ringing voltage to line drawers
• 18 -48 V to line drawers
• 18 +15 V to line drawers
• 18 +5 V to line drawers
Note: Store and group the fuses by size to simplify reinstallation into
the replacement card.
Use the following figure to locate the fuses and breakers and their labels.
Star Remote System card replacement procedures
DoPurpose
NT6X53 power converter in unit 0, slot 3
NT6X53 power converter in unit 0, slot 5
NT6X53 power converter in unit 1, slot 20
NT6X53 power converter in unit 1, slot 18
NTTR60 ringing generator in unit 0, slot 1
NTTR60 ringing generator in unit 1, slot 22
Talk battery A feed to the 9 line drawers 1
- 4, 9 - 13 and UMP cards in unit 0/1, slot
11/13
Talk battery B feed to the 9 line drawers
5 - 8, 14 - 18 and UMP cards in unit 0/1, slot
11/13
DMS-100 Family NA100 Star Remote System XPM15 and up
NTTR75
in a STAR
(continued)
12-163