Sony NEX-5T - Manual (Page 83)

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The power turns off suddenly.
• When the camera or battery pack is too hot, the camera displays a warning
message and turns off automatically to protect the camera.
• If you do not operate the camera for given period of time, the camera turns to
power saving mode. To cancel the power save, operate the camera by means
such as pressing the shutter button halfway down.
The charge lamp on the camera flashes when charging the battery
pack.
• You can only use an NP-FW50 battery pack. Make sure that the battery is
NP-FW50.
• If you charge a battery pack that has not been used for a long time, the charge
lamp may flash.
• The charge lamp flashes in two ways, fast (about 0.3-second intervals) or
slow (about 1.3-second intervals). If the charge lamp is flashing fast, remove
the battery pack and reattach the same battery pack securely, or disconnect
and reconnect the USB cable. If the charge lamp flashes fast again, it
suggests that there is something wrong with the battery pack, AC Adaptor
(supplied), or USB cable. Slow flashing indicates that charging is suspended
because the ambient temperature is outside the suitable range for charging
the battery pack. Charging will resume and the charge lamp will be lit when
the ambient temperature returns to within the suitable temperature. The
optimal temperature for charging the battery pack is between 10 °C and
30 °C (50 °F and 86 °F).
The battery has not been charged even if the charge lamp has
turned off.
• This phenomenon occurs when you use the camera in an extremely hot or
cold location. The optimal temperature for charging the battery pack is
between 10 °C and 30 °C (50 °F and 86 °F).
The battery pack is not charged.
• When the battery pack is not charged (the charge lamp does not light) even if
you follow the proper charging procedure, remove the battery pack and re-
insert the same battery pack securely, or disconnect and reconnect the USB
cable.