Ext Fsp Opm Cabinet Major - Nortel DMS-100 Series Maintenance Manual

26 Determine if the drawer has any loose or short-circuited wires.
If the wires
are loose or short-circuited
are not loose or short-circuited, the fuse is a ringing
voltage fuse (RA or RB) and all five drawers in the
shelf are not complete
are not loose or short-circuited, the fuse is a ringing
voltage fuse (RA or RB) and all five drawers in the
shelf are complete
are not loose or short-circuited, the fuse is one of the
line drawer fuses (01 to 15)
27 Reseat all the line cards in the drawer and repeat steps 20 and 21 for the next
drawer.
28 Reseat the line cards one at a time.
29 Determine if the fuse is blown after you reseat each card.
If after you
reseat any line card, the fuse blows again
reseat all of the line cards, the fuse does not blow
30
Remove the line card from the drawer.
31 Obtain a replacement line card. Make sure the replacement card has the
same product engineering code (PEC), including the suffix, as the card
removed.
32 Insert the replacement line card into the drawer.
If you
handle any one of fuses 01 to 05 step 36
OPM alarm clearing procedures
OPM cabinet major
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
Do
step 112
step 27
step 112
step 112
Do
step 30
step 105
Do
7-59
Ext FSP
(continued)