Nortel DMS-100 Series Maintenance Manual page 277

17 Remove the blown fuse and the associated fuse. For example, if the blown
fuse is fuse number 06, remove fuse number 11.
18 Obtain a replacement fuse with the same voltage and amperage as the blown
fuse.
19 Use the following table to determine which drawer in the shelf below the fuse
panel is associated with the blown fuse.
Fuse number
01, 06, 11
02, 07, 12
03, 08, 13
04, 09, 14
05, 10, 15
Note: The RA and RB fuses supply ringing voltage to all five drawers in
the shelf. Array 0 houses drawers 0-4 and array 1 houses drawers 5-9.
20
Pull out the line drawer you identified in step 19.
Note: When you replace a blown RA or RB fuse, begin with the drawer to
the far left.
21
OPM alarm clearing procedures
OPM cabinet major
Drawer number
Array 0
0 (far left)
1
2
3
4
CAUTION
Loss of service
Make sure to perform this procedure during periods of low
traffic.
DANGER
Personal injury
Use caution when you handle the line card. The line feed
resistor can be hot.
DMS-100 Family OPM Maintenance Manual XPM14 and up
7-57
Ext FSP
(continued)
Drawer number
Array 1
5 (far left)
6
7
8
9