Nortel Meridian 1 Hardware Replacement Manual page 204

Page 204 of 250
553-3001-520 Standard 17.00 January 2002
Replacing equipment
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.
CAUTION
Service Interruption
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.
4 Reconnect cables, plugs, and wires from the rear of the module to the
backplane: