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Upgrade and replacement procedures 66
CAUTION: Electrostatic discharge can damage electronic components. Be sure you are properly
grounded before beginning this procedure.
1. Close all applications, and then power down the server. This procedure flushes all data from the cache.
2. Observe the BBWC Status LED ("Battery pack LEDs" on page 28).
o If the LED is blinking every 2 seconds, data is trapped in the cache. Restore system power, and then
repeat the previous steps in this procedure.
o If the LED is not lit, proceed with the next step.
WARNING: There is a risk of explosion, fire, or personal injury if the battery pack is not properly
handled. Refer to "Battery replacement notice (on page 93)" before installing or removing any
item that contains a battery pack.
3. Remove the controller from the server.
4. Pull the flanges on the battery clip outward (1), and then swivel the clip 180 degrees so that it rests on
the batteries (2).
5. Slide the batteries toward the right edge of the controller, away from the bracket.