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6. Installing/Removing the Shared
Resource Units
This procedure explains how to install shared resource units (SRUs). It assumes that
the SRUs have been inspected for damage according to the procedure 'Unpacking
the Shared Resource Units', in Part 3, and also that the cabinets have been installed
but not yet powered up.
Power supply units should be installed first. With systems equipped with cabinets
NT4G13FA or later, Loft Power Supplies are used. Earlier versions of the cabinet
(such as NT4G13DA) use the NT4G19EA Power Supply. The NT4G19FA Power
Supply is available as a backup to the Loft Power Supplies or as an upgrade to
systems using the NT4G19EA.
For the Loft Power Supply, use the procedure 'Installing the Loft Power Supply'
below. For the NT4G19EA Power Supply, first install the capacitor interlock as
described in 'Installing the Capacitor Interlocks' below. The NT4G19FA Power
Supply is installed the same way as any other SRU, with no special procedures.
Refer to Fig. 6-1 for a view of the four SRU sizes and the SRU features.
TOOLS:
1
1
1/4-inch nutdriver (for Loft Power Supplies and Analog Link cards)
Medium Phillips screwdriver (for installing capacitor interlocks).
Practice 450-1011-201
5
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