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206 Chapter 9 Replace or Upgrade a Power Supply
P0993133 03
1 If you still have access to the Unified Manager, shut down the system using the Shutdown
command. For details, refer to “Shut down the system software” on page 145. Otherwise, skip
to step 2.
2 Set up the Business Communications Manager for maintenance, as described in “Shut down
the system hardware” on page 146.
3 Disconnect the BCM400 system from the AC power outlet.
4 Remove the standard power supply from the platform base chassis (see Remove a BCM400
standard power supply on page 199). Continue to the next step in this procedure when
complete.
5 Remove the power supply support bracket from the platform base chassis (see Remove a
BCM400 standard power supply on page 199). Continue to the next step in this procedure
when complete.
6 Remove the power supply adapter tab from the support bracket (see Figure 133). Use pliers to
bend and snap the tab away from the support bracket. Make sure you remove only the inner
adapter tab.
Figure 133 Remove the BCM400 power supply adapter tab from the support bracket
7 Remove the knockout plate from the rear of the platform base chassis (see Figure 134).
Figure 134 Remove the power supply knockout bracket
Remove the
inner adapter tab
Remove this bracket to
accommodate redundant
power supply
Rear view