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254 Troubleshooting: Your Array
Troubleshooting Power Supply/Cooling Fan
Module
CAUTION: Many repairs may only be done by a certified service technician.
You must only perform troubleshooting and simple repairs as authorized in
your product documentation, or as directed by the online or telephone service
and support team. Damage due to servicing that is not authorized by Dell is not
covered by your warranty. Read and follow the safety instructions that came
with the product.
CAUTION: It is recommended that you turn off the host server before turning off
the array to prevent loss of data.
1
Locate the faulty power supply and determine the status of the LEDs.
• If the AC power LED is not lit, check the power cord and power source
into which the power supply is plugged.
• Connect another device to the power source to verify if it is
working.
• Connect the cable to a different power source.
• Replace the power cable.
If the problem is not resolved, see "Getting Help" on page 265.
• If the DC power LED is not lit, verify that the power switch is turned
on. If the power switch is turned on, see step 2.
• If the power supply’s fault indicator is lit, see "Getting Help" on
page 265.
CAUTION: Power supply/cooling fan modules are hot-swappable. The array can
operate on a single power supply; however both modules must be installed to
ensure proper cooling. A single power supply/cooling fan module can be removed
from a powered-on array for a maximum period of 5 minutes. Beyond that time, the
array may automatically shut down to prevent damage.
2
Reseat the power supply by removing and reinstalling it. See "Power Supply
and Cooling Fan Features" on page 29.
NOTE: After installing a power supply, allow several seconds for the array to
recognize the power supply and to determine if it is working properly.
If the problem is not resolved, see "Getting Help" on page 265.
book.book Page 254 Tuesday, September 27, 2011 3:25 PM