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Removal and replacement procedures 57
4.
If the existing cache is connected to a battery, observe the BBWC Status LED ("Battery pack LEDs" on
page 85).
o If the LED is flashing every 2 seconds, data is still trapped in the cache. Restore system power, and
then repeat the previous steps.
o If the LED is not illuminated, disconnect the battery cable from the cache.
5. Disconnect the cable.
6. Remove the SPI board (on page 30).
7. Open the cache slot latches.
8. Remove the cache module.
To replace the component, reverse the removal procedure.
Removing the BBWC battery pack
CAUTION: After the server is powered down, wait 15 seconds and then check the amber LED
before unplugging the cable from the cache module. If the amber LED blinks after 15 seconds, do
not remove the cable from the cache module. The cache module is backing up data, and data is
lost if the cable is detached.
CAUTION: Do not detach the cable that connects the battery pack to the cache module.
Detaching the cable causes any unsaved data in the cache module to be lost.
To remove the component:
1. Power down the server (on page 26).
2. Extend the server from the rack (on page 26).
3. Remove the access panel (on page 28).
4. If the existing cache is connected to a battery, observe the BBWC Status LED ("Battery pack LEDs" on
page 85).
o If the LED is flashing every 2 seconds, data is still trapped in the cache. Restore system power, and
then repeat the previous steps.