Verifying The Power Supply Status; Determining The Status Of A Fan - Brocade Communications Systems VDX 8770-4 Hardware Installation Manual

Use the following table to interpret the power supply LED patterns and to determine the recommended action for each pattern.
The LED patterns may temporarily change during POST and other diagnostic tests.
The Brocade VDX 8770-4 can have up to four power supplies. Be sure to check each module.
TABLE 13 Power supply LED descriptions
LED purpose
AC OK
DC OK
ALM

Verifying the power supply status

You can check the power supply status by entering the show environment power command. Use the following table to interpret the
command output. You can also use the show system command.
TABLE 14 Output for show environment power command
Output
OK
absent
unknown
predicting failure
faulty
For absent or faulty indications, if the power supply is not improperly seated, contact yor Brocade supplier to order replacement parts.
You may also want to do this if the indication is predicting failure.

Determining the status of a fan

Complete the following steps to determine the status of a fan.
1. Locate the LED indicators on the fan. The LED patterns may temporarily change during POST and other diagnostic tests.
The Brocade VDX 8770-4 has up to two fans. Be sure to check each module.
98
Color
No light (LED is off)
Steady green
No light (LED is off)
Steady green
No light (LED is off)
Steady amber
Status
Power supply does not have
incoming AC power.
Power supply has incoming AC
power.
The DC output is not in the
acceptable range.
The DC output is in the acceptable
range.
The power supply has not failed.
The power supply has failed.
Explanation
Power supply is functioning correctly.
Power supply is not present. Could also be improperly seated.
Unknown power supply unit installed.
Power supply is present but predicting failure.
Power supply is present but faulty (no power cable, power switch turned
off, fuse blown, or other internal error). Could also be improperly seated.
System Monitoring
Recommended action
If using AC power, ensure that the
power supply is firmly seated, the
AC power source is live, and the
power cable is connected.
No action required.
Ensure that the power supply is
firmly seated.
No action required.
No action required.
Replace the power supply.
Brocade VDX 8770-4 Hardware Installation Guide
53-1002563-10