Sony Walkman NWZ-E343 Operation Manual page 18

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Preparing the Player
Note
 If you charge the player when it has not been used for a long period, your computer may
not recognize the player or nothing may appear on the display. Charge the player for
about 5 minutes, and it starts operating properly.
 Charge the battery in an ambient temperature of between 5 ºC to 35 ºC (41 ºF to 95 ºF).
If you try to charge the battery in an ambient temperature outside this range, the battery
indicator may blink, and charging cannot be performed.
 The number of times the battery can be recharged before it is used up is approximately
500 times. This number may vary, depending on the conditions under which you use the
player.
 The battery indicator on the display is only an estimate. For example, one section of
black in the indicator will not always indicate exactly one-fourth of the battery's charge.
 [Do not disconnect.] appears in the display while the computer accesses the player. Do
not disconnect the supplied USB cable while [Do not disconnect.] appears or data being
transferred may be damaged.
 The control buttons on the player become inoperative while it is connected to a
computer.
 If you do not intend to use the player for over half a year, charge the battery at least once
during this time to maintain battery performance.
 Some USB devices connected to the computer may interfere with proper operation of
the player.
 We do not guarantee battery recharging using a personally assembled/modified
computer.
 If the computer enters a power saving mode, such as the Sleep or Hibernation mode,
while the player is connected via the USB cable, the player's battery will not be charged.
Instead, the player continues to draw power from the battery, discharging it.
 Do not leave the player connected for extended periods to a laptop computer that is not
connected to AC power, since the player may discharge the computer's battery.
 While the player is connected to a computer, do not turn on, restart, wake up from sleep
mode, or shut down the computer. These operations may cause the player to
malfunction. Disconnect the player from the computer before performing these
operations.
 Heat may build up in the player while charging. This is not malfunction.