Sony NWZ-W274S - Manual (Page 74)

removing it to/from the USB cradle for several times.
The battery is charged in an ambient temperature out of the range of 5 °C
(41 ºF) to 35 °C (95 ºF).
Charge the battery in an ambient temperature of 5 °C (41 ºF) to 35 °C
(95 ºF).
[Details]
Your computer is not on.
Turn on the computer.
Your computer has entered Sleep or Hibernation mode.
Cancel the computer’s Sleep or Hibernation mode.
If the symptom that you encountered does not apply to those listed above,
press the RESET button of your Walkman
[Details] and reconnect it to the
computer by using the USB cradle.
You have not used your Walkman for more than a year.
Depending on the conditions under which your Walkman is used, the
battery may have been deteriorated. Consult your nearest Sony dealer.
Your Walkman takes a long time to start.
It may take time to start if many files or folders are stored. While starting,
your Walkman emits a startup sound.
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