Technical data

Brocade VDX 6720 Hardware Reference Manual 31

53-1002084-06

Chapter

FRU Removal and Replacement Procedures

In this chapter

•Before beginning the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

•Replacing a combined FRU in a Brocade VDX 6720-24. . . . . . . . . . . . . . . . 32

•Replacing a power supply FRU in a Brocade VDX 6720-60 . . . . . . . . . . . . . 36

•Replacing a fan assembly in the Brocade VDX 6720-60 . . . . . . . . . . . . . . . 39

•Installing a DC power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Before beginning the installation

The field-replaceable units (FRUs) in the Brocade VDX 6720 switches can be removed and

replaced without special tools. The switches can continue operating during the FRU replacements

if the conditions specified in the procedure are followed. This covers both the AC-DC (AC) and

DC-DC (DC) versions of the combined power supply and fan FRUs in the Brocade VDX 6720-24

switch and the separate power supply and fan FRUs in the Brocade VDX 6720-60 switch.

Refer to “Installing a DC power supply” if you are installing a DC power supply for the first time.

NOTE

Read the “Installation and safety considerations” on page 7 before servicing.

CAUTION

This document describes how to change field-replaceable units (FRUs) for units with either a

port-side air exhaust or a port-side air intake. You must replace a failed FRU with a FRU of the

same type. This applies to both power supplies and fan assemblies.

A new FRU must have the same part number (P/N) as the FRU being replaced. The

manufacturing P/N is located on the top of the FRU.

The P/N ends in either -F (front-to-rear airflow) or -R (rear-to-front airflow). You must use a

replacement FRU that has the same airflow designator with the part number.

If a mismatched power source or fan assembly is installed by mistake, a warning is sent to the

console. The warning messages will be similar to the following:

• For a fan mismatch: [WARNING, Brocade VDX 6720, MISMATCH in FAN Air Flow direction.

Replace FRU with fan air flows in same direction.

• For a power supply or combined power supply and fan mismatch: [WARNING, Brocade VDX

6720, MISMATCH in PSU-FAN FRUS Air Flow direction. Replace PSU with fan air flows in same

direction.