Sony HANDYCAM HDR-CX150 User Manual page 5

On the drop sensor (HDR-XR150)
To protect the internal hard disk from shock
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by dropping, the camcorder has a drop sensor
function (p. 79). When a drop occurs, or
under a non-gravity condition, the block noise
made when this function is activated by the
camcorder may also be recorded. If the drop
sensor catches a drop repeatedly, recording/
playback may be stopped.
Note on using the camcorder at high
altitudes (HDR-XR150)
Do not turn on the camcorder in a low-pressure
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area, where the altitude is more than 5,000
meters (16,000 feet). Doing so may damage the
internal hard disk drive of your camcorder.
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