Nortel Meridian 1 Hardware Replacement Manual page 134

Page 134 of 250
553-3001-520 Standard 17.00 January 2002
Replacing equipment
d. Disconnect the frame ground (green) wire from the frame ground
post.
CAUTION
Service Interruption
Do not disconnect the main power connectors (large
orange connectors) at the top and bottom of the
module.
12 Pull the card cage all the way out of the module.
Note: For AC-powered systems, after the card cage is out of the
module you must remove the MPDU and reinstall it on the replacement
card cage. The screw-heads for the MPDU are in the wall of the power
supply slot.
13 Remove the floating power connector (the black connector) on the rear
of the card cage. Using the same mounting screws and nuts, attach the
connector to the new card cage.
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
14 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.
CAUTION
System Failure
If the Core/Network Module jumpers are set
incorrectly, the system will not load and operate
correctly.