Attention: To prevent damage to the storage subsystem components from
overheating, replace a failed power supply within 10 minutes of removal. If
replacing it will take longer than 10 minutes, stop all I/O activity to the storage
subsystem and turn off the power until you complete the replacement. Do not
remove the failed power supply from the storage enclosure until you:
v Review the replacement procedure in this section.
v Have the replacement power supply and are ready to install it in the enclosure.
(L001)
1. If necessary, use the Storage Manager software to print a storage system
profile.
2. Read the safety information that begins on page “Safety” on page ix and “Best
practices guidelines” on page 8.
3. Did the Recovery Guru direct you to replace a failed power supply?
v Yes: Go to step 4.
v No: Run the Recovery Guru to identify the failed component, and then go
to step 4.
4. Unpack the new dc power supply. Save all packing material in case you have
to return the failed power supply.
5. Turn off the power switch on the new unit.
6. Check the fault LED to locate the failed power supply. If a fault is detected,
the amber fault LED is lit.
7. Ensure that the OK to remove LED is lit. Do not remove the power supply if
the LED is off. For more information about the OK to remove LED, see “OK
to remove LED” on page 105.
Chapter 5. Replacing components 139
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