RAID Xanadu User Manual page 46

(5) BBU FAULT LED
Illuminated: 1) Indicates that a fault has occurred in the extended BBU.
2) The BBU FAULT LED also illuminates when the BBU cable described in
(6) is not connected normally to the body of the DAC unit.
Blinking: The BBU FAULT LED blinks when the battery exchange period is up. (Please
exchange the BBU within the prescribed interval.)
(6) BBU OUT connector
The BBU OUT connector is the output connector of the BBU. Connect the accompanying
BBU cable between the BBU-IN pin on the DAC unit and this terminal.
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