Nortel DMS-100 Series Maintenance Manual page 298

7-62 Alarm clearing procedures
Ext MSP
major
(continued)
6
7
8
9
297-8211-550 Standard 05.01 August 1999
DANGER
Risk of fire
Replace the fuse with a fuse of the same type, rating
(color code) and manufacturer. This action provides
continued protection against risk of fire.
Remove the blown fuse.
Insert the replacement fuse.
If the fuse
blows (protrudes) again
does not blow
Determine the fuse that is blown.
Note: Fuses 01 to 05 supply +5 V, fuses 06 to 10 supply +15 V, and fuses 11
to 15 supply –48 V.
If the blown fuse is
is 01 to 05
is 06 to 15
is RA or RB
Use the following table to determine which +15 V fuse (06 through 10) is
associated with which –48 V fuse (11 through 15).
–48 V fuse number
11
12
13
14
15
Do
step 84
step 81
Do
step 13
step 9
step 13
+15 V fuse number
06
07
08
09
10