IBM SAN256B-6 Installation, Service And User Manual page 197

Procedure
1. Check the LED indicator on the power supply. The LED patterns may temporarily change during
POST and other diagnostic tests. For information on interpreting LED patterns, refer to"Interpreting
power supply LEDs" on page 93. Be sure to check all the power supply modules.
2. Check the power supply status by entering the following commands:
The power supply status displays OK, Absent, or Faulty. If a power supply displays absent or faulty,
contact the device supplier to order replacement parts. Both physically absent or faulty could also be
the result of the power supply not being properly seated or being turned off.
v psShow - Displays the status of each power supply as OK, Absent, or Faulty. If a power supply
displays absent or faulty, contact the device supplier to order replacement parts. Both physically
absent or faulty could also be the result of the power supply not being properly seated or being
turned off.
v sensorShow - Displays current temperature and status of fan and power supply sensors located on
the chassis.
v errDump - Displays all system error log messages.
v errShow - Displays error log messages one at a time.
Example
Refer to "Using monitoring commands" on page 97 and theFabric OS Command Reference for output
examples and additional information on Fabric OS commands.
For more information about error messages, refer to the Fabric OS Message Reference.
Power Supply Assemblies
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