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Attention: Disassembling any part of the power supply voids the part warranty
and regulatory certifications. There are no user-serviceable parts inside the power
supply and fan assembly. The cooling system relies on pressurized air; if you are
using redundant power supply and fan assemblies, do not leave either of the
power supply and fan assembly slots empty longer than two minutes. If a power
supply and fan assembly fails, leave the power supply and fan assembly in the
switch until it can be replaced. If you are using only one power supply and fan
assembly, be sure that the slot filler panel is in place. If that power supply fails, the
switch will turn off.
Table 7 describes the power supply and fan assembly status LED colors, behaviors,
and actions required, if any.
Determining the need to replace a power supply and fan
assembly
Use one of the following methods to determine the status of the power supplies:
v Check the power supply and fan assembly status LED next to the On/Off switch
v In Web Tools, click the Power Status icon.
v Enter the psShow command at the prompt to display power supply and fan
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SAN24B-5 Installation, Service, and User Guide
Table 7. Power supply and fan assembly status LED behavior
LED color
Description
No light
Power supply and fan assembly is
not receiving power, or is off.
Steady green
Power supply and fan assembly is
operating normally.
Flashing green
Power supply and fan assembly is
(for more than
faulty for one of the following
5 seconds)
reasons:
v The assembly is switched off -
flashing for ~ 5 seconds, then off
v The power cable is disconnected -
flashing for ~ 5 seconds, then off
v The power supply and fan
assembly has failed
Note: When the switch is first
powered on, the power supply and
fan assembly status LED will flash
until POST has completed
(see 3 in Figure 13 on page 33)
assembly status as shown below:
br6505:admin> psshow
Power Supply #1 is OK
Power Supply #2 is absent
br6505:admin>
Alternatively, you can enter the fanShow or chassisShow commands to
determine the status of the power supply and fan assembly:
Action required
Verify that the power supply and
fan assembly is on and seated and
the power cord is connected to a
functioning power source.
No action is required.
Check the power cable connection.
Verify that the assembly is powered
on
Replace the power supply and fan
assembly FRU.
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