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Digital Music Player
NW-E393/E394/E395
Notes on charging the battery
The charging time differs depending on the battery usage conditions.
If the battery life is reduced to about half of its normal life even if sufficiently charged, it
has probably worn out. Please contact your nearest Sony dealer.
If you charge your Walkman when it has not been used for a long period of time, your
computer may not recognize it, or the Walkman may not respond. Charge the Walkman
for about 10 minutes, after which it should start operating normally again.
When the ambient temperature exceeds the recommended range, is displayed on
the screen and charging is forcibly stopped. Charge the battery in an ambient
temperature between 5 °C to 35 °C (41 ºF to 95 ºF).
The number of times the battery can be recharged from complete discharge is
approximately 500 times. This number may vary depending on the conditions under
which you use your Walkman.
To prevent battery deterioration, charge the battery at least once every six months or
every year.
Charging is not guaranteed with homebuilt or modified computers.
Operation with a USB port extended with a USB hub is only guaranteed when a self-
powered USB hub that carries an authorized logo is used.
Do not leave your Walkman connected for an extended period of time to a laptop
computer that is not connected to an AC power supply. Doing so may discharge the
computer’s battery.
Help Guide
How to Use
97
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