Sony NWZ-W273BLUE - Manual (Page 24)

Do not leave your Walkman connected for extended periods of time to a laptop computer that
is not connected to AC power. Leaving the Walkman connected may discharge the
computer’s battery.
Disconnect your Walkman from the computer before you turn on, restart, wake up from the
sleep mode, or shut down the computer.
Heat may build up in your Walkman while charging. This is not a malfunction.
When you use your Walkman for the first time, or if you have not used the Walkman for a
long time, recharge it fully (until the OPR lamp turns off).
When you use your Walkman for the first time, or if you have not used the Walkman for a
long time, it may take a few minutes to be recognized by the computer, even if charging has
already started (the OPR lamp lights up in red). Check that the computer recognizes the
Walkman after you have connected it to the computer for about 5 minutes.
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