Nortel DMS-100 Series Maintenance Manual page 271

7
Insert the replacement fuse.
If the fuse
blows again
does not blow
8 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 0 to 17. The line drawers are numbered from
1 to 18. Any +5 V, +15 V, or -48 V fuse in position 0 is associated with line
drawer 1 and any fuse in position 1 is associated with line drawer 2, and
so forth.
If the blown fuse is any one of
+5 V fuses
+15 V or -48 V fuses
ringing fuses
9 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
as well.
10 Get a replacement fuse with the same voltage and amperage as the blown
fuse.
11
Star Remote System alarm clearing procedures
SRHE frame major
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.
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.
DMS-100 Family NA100 Star Remote System XPM15 and up
Do
step 68
step 63
Do
step 12
step 9
step 12
11-5
Ext FSP
(continued)