Nortel Meridian 1 Replacement Manual page 203

3 Remove the NT8D22 System Monitor in the rear of the pedestal. (Do not
turn off the blower unit in the front of the pedestal.)
Note: If this is the master system monitor, disconnect the RJ11 cables
before you pull the system monitor out of the pedestal.
If the system monitor is not removed, the system may shut down.
4 Remove all cards from the module:
a Tag and disconnect cables to all faceplate connectors.
b Tag cards so they can be returned to the same slot. Remove cards.
5 Disconnect cables, plugs, and wires from the rear of the module to the
backplane:
a Remove the I/O safety panel by turning the screws on each side. Set
the cover aside.
b Tag and disconnect all cables from the backplane to the interior of
the I/O assembly.
c Tag and disconnect all plugs, wires, and cables to the backplane.
6 Remove the two mounting screws that secure the rear of the card cage to
the module.
7 Remove the front cover plates on both sides of the card cage.
8 Remove the three mounting screws that secure the front of the card cage
to the bottom of the module. Pull the card cage out of the module.
Installing equipment
1 Slide the replacement card cage into position in the module. Install the
mounting screws at the front of the card cage.
2 Replace the front cover plates on both sides of the card cage.
3 Install the mounting screws at the rear of the card cage.
Replacing equipment
CAUTION
Page 203 of 362
Hardware replacement