ASR 5000 Installation Guide ▄
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Chapter 17
Replacing a Power Filter Unit
Up to two -48 VDC Power Filter Unit (PFU) assemblies can be installed in the ASR 5000 chassis. Two PFUs provide
load-balancing and redundancy. The PFUs are located in the lower-rear of the chassis.
This chapter provides instructions for replacing a PFU in the event of failure. It includes the following sections:
Determining that a PFU has Failed
Installing the Replacement PFU
What to do with the Failed PFU
Caution:
Although a single PFU can provide power for a fully loaded chassis, it is strongly recommended that
two PFUs always remain installed for load-balancing and redundancy.
Caution:
During installation, maintenance, and/or removal, wear a grounding wrist strap to avoid ESD damage
to the components. Failure to do so could result in damage to sensitive electronic components and potentially void your
warranty.
Summary of Contents for ASR 5000 Series
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