Nortel DMS 100 Series Maintenance Manual page 281

Put on a wrist strap.
5 Remove the two fuses in the fan power control module.
At the rear panel of the cabinet
6 Remove the NTRX54 circuit card as shown in the following figures.
a
b
7 Note the wire color and location of the connector cables to facilitate
connection.
8 Use the connector removal tool to disconnect the power connectors to the
circuit card manually. Work from the bottom of the MSP shelf to the top of the
MSP shelf. Manually disconnect the smaller black power connectors located
below the larger blue power connector. Manually disconnect the large blue
DMS-100 Family Remote Switching Center Multi-Access Maintenance Manual XPM11 and up
DANGER
Risk of injury from high energy levels, equipment damage
Take these precautions when you remove or insert a card:
1. Do not apply direct pressure to the components.
2. Do not force the cards in the slots.
DANGER
Heat damage
Do not leave this card out of service for more than 30 min. A
large amount of damage the whole cabinet can occur if
cooling does not occur for more than 30 min.
Open the rear doors of the cabinet. Locate the circuit card. The circuit
card is in slots 19 and 20.
Loosen the four screws. Slide the access plate sideways to remove the
access plate.
NTRX54BA
o
o
o
o
Access
Plate
RSC-M card replacement procedures
in an RSC-M/MSP
6-129
NTRX54
(continued)