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Chapter 29
Replacing Parts
Replacing a DC Power Entry Module
DC Power Entry Modules (PEMs) contain few active components so they should rarely need
replacement. Access is from the back of the node.
To remove a PEM, use the following procedure:
Check the node system voltage by using the Display Power (dsppwr) command. Note which input has
Step 1
failed, A or B. Power Supply A is the unit on the right side facing the rear of the node.
Turn off the primary source of power to the PEM to be replaced.
Step 2
Step 3
Turn off the circuit breaker on the PEM to be replaced.
Remove the two screws holding the conduit box cover (see Figure 29-3). Or, remove the plastic cover
Step 4
plate over the input terminal block.
Remove the power input wiring at the PEM terminal block.
Step 5
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005
Replacing a DC Power Entry Module
Cisco BPX 8600 Series Installation and Configuration
29-5
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Troubleshooting
