Panasonic U500D user manual USB Sleep and Charge function

	Troubleshooting
USB Sleep and Charge function
Problem	Procedure
I cannot use the	The setting of “USB Sleep and Charge function”
“USB Sleep and	may be [Disabled]. Change the setting to
Charge function”.	[Enabled] in the TOSHIBA USB Sleep and Charge
	utility..
	When there is a current overflow of the external
	device connected to the compatible port, USB
	bus power (DC5V) supply may be stopped for
	safety reasons. When this happens, disconnect
	an external device if some external devices
	are connected. After that, turn the power of the
	computer ON/OFF to restore the function. If this
	function can not be still used even if only one
	external device is connected, stop using the
	external device because its current is over the
	acceptable value of this computer.
	Some external devices may not be able to use the
	“USB Sleep and Charge function”. In this case,
	please try one or more of the following methods.
	n Change a mode setting of [Enabled] by the
	BIOS Setup.
	n Turn OFF the computer while external devices
	are connected.
	n Connect external devices after turning OFF of
	the computer.
	If this function can not be still used, change the
	setting to [Disabled] in the BIOS Setup and stop
	using this function.
The battery depletes	When “USB Sleep and Charge function” is set
quickly even when	to [Enabled] in the BIOS Setup, USB bus power
I turned OFF	(DC5V) will be supplied to the external device
the power of the	connected to the compatible port. If external
computer.	device is connected to the compatible port when
	the AC adaptor is not connected to the computer,
	the battery of the computer will be depleted even
	when the power of the computer is turned OFF.

Connect the AC adaptor to the computer or change the “USB Sleep and Charge function” setting to [Disabled] in the BIOS Setup.

Instead use and USB port that does not have the USB Sleep and Charge function-compatible icon ( ).

User’s Manual 9-15