Removal And Replacement Of Power Supplies And Fans; Removing And Replacing A Power Supply And Fan Assembly; Determining The Status Of A Power Supply And Fan Assembly - HP SN6000B Hardware Reference Manual

4 Removal and replacement of power supplies and fans

The power supply and fan assembly is the only FRU in the switch. You do not need special tools
to remove and replace this FRU. The switch will continue to operate during the FRU replacement
if you follow the procedures in this chapter. Replacing a power supply and fan assembly takes
less than two minutes.
CAUTION:
certifications. There are no user-serviceable parts inside the power supply and fan assembly. The
cooling system relies on pressurized air, so do not leave either of the power supply and fan assembly
slots empty longer than two minutes when the switch is operating. If a power supply and fan
assembly fails, leave the power supply and fan assembly in the switch until it can be replaced.
The power supply and fan assembly must be operational to ensure redundancy.

Removing and replacing a power supply and fan assembly

The fans are fixed inside the combined power supply and fan FRU to provide the airflow needed
to cool the switch. Each FRU contains two fans. The system software measures and sets fan speed
through the tachometer interface.
The two power supply and fan assembly FRUs are hot-swappable if replaced one at a time. They
are identical and fit into either slot.
Figure 16 (page 33)
HP B-series Fabric OS identifies the assemblies from right to left as assemblies 1 and 2. (The actual
appearance of the switch may differ slightly from this illustration, but the locations are correct.)
Figure 16 Power supply and fan assemblies
1. Power supply/fan assembly #2

Determining the status of a power supply and fan assembly

Use one of the following methods to determine the status of the power supply and fan assembly:
Check the power supply and fan assembly status LED next to the AC power switch (see
Figure 15 (page
In Web Tools, click the Power Status icon.
Enter the psshow command at the prompt to display the power supply and fan assembly
status:
br6510:admin> psshow
nl
nl
Power Supply #1 is OK
nl
V10529, TQ2H0000030 ,60-0300031-01,X2, ,SP640
nl
,2X,TQ2H0000
nl
Disassembling any part of the power supply voids the part warranty and regulatory
shows the power supply and fan assemblies on the nonport side of the switch.
30)).
2. Power supply/fan assembly #1
Removing and replacing a power supply and fan assembly 33