Nortel DMS-100 Series Maintenance Manual page 304

11-38 Star Remote System alarm clearing procedures
PM STAR
major
(continued)
22
23
24
25
26
297-8353-550 Standard 05.01 March 2001
Determine which fuse is blown.
Note: The line drawer fuses are grouped and labeled as +5 V, +15 V, and
-48 V and are numbered from 1to 18. The line drawers are numbered from
1 to 18. Any +5 V, +15 V, or -48 V fuse in position 1 is associated with line
drawer 1 and any fuse in position 2 is associated with line drawer 2, and
so forth.
If the blown fuse is any one of
+5 V fuse
+15 V or -48 V fuse
ABS fuse
Remove the blown fuse and its associated fuse. For example, if the blown
fuse is a -48 V fuse in position 17, then remove the +15 V fuse in position 17
also.
Get a replacement fuse with the same voltage and amperage as the blown
fuse.
DANGER
Risk of fire
For continued protection against risk of fire, replace the
blown fuse with a fuse of the same type, rating (color code),
and manufacturer.
If you replaced a +15 V or -48 V fuse, insert the +15V fuse, then the -48V fuse.
If the fuse
blows again
does not blow
The card list identifies the cards most likely to have faults. Replace the cards
one at a time in the order listed as directed below:
If last card on list has
not been replaced
been replaced
Do
Remove the blown fuse and go
to step 24
step 23
Remove the blown fuse and go
to step 24
Do
step 27
step 29
Do
step 28
step 27