Nortel Meridian 1 Replacement Manual page 121

Note: Check the orientation of the connector. Looking at it from the rear
of the card cage, the upper left corner pin should be empty (no wire) and
the lower right corner pin should have a wire installed. The green wire
should be up.
Installing equipment
1 Set the backplane jumpers in the card cage for Core/Network 0 and
Core/Network 1 in Options 61C and 81C, and Core/Network Module in
Option 51C. The jumpers are located on the backplane, along the bottom
of the front side (the side facing into the card cage assembly):
a For Core/Network 0, verify that the jumper between card slots 14
and 15 is closed.
b For Core/Network 1, verify that the jumper between card slots 14
and 15 is open.
If the Core/Network Module jumpers are set incorrectly, the system
will not load and operate correctly.
2 Reposition the EMI shield (it looks like a brass grill) in the base of the
module. Tape over the front mounting tabs to hold the shield in position.
The tape will be removed later.
Replacing equipment
CAUTION
Page 121 of 362
Hardware replacement