![](/images/new-backgrounds/1272378/272378419x1.webp)
Troubleshooting
USB Sleep and Charge function
For more information and settings, please refer to the USB Sleep and Charge function section in Chapter 7, HW Setup.
Problem | Procedure |
I cannot use the "USB | The setting of "USB Sleep and Charge function" |
Sleep and Charge | may be [Disabled]. Change the setting to |
function". | [Enabled]. |
|
|
| 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. |
| ■ Change a mode setting of [Enabled]. |
| ■ Turn OFF the computer while external |
| devices are connected. |
| ■ Connect external devices after turning OFF of |
| the computer. |
| If this function can not be still used, change the |
| setting to [Disabled] and stop using this function. |
|
|
The battery depletes | When "USB Sleep and Charge function" is set to |
quickly even when I | [Enabled], USB bus power (DC5V) will be |
turned OFF the | supplied to the external device connected to the |
power of the | compatible port. If external device is connected |
computer. | 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]. |
| Instead use an USB port that does not have the |
| USB Sleep and Charge |
| ( ). |
|
|
User’s Manual |