Panasonic Toughbook 53 Operating Instructions - Page 24

Troubleshooting Useful Information Getting Started Troubleshooting (Basic) „ Display No display. The screen is dark. z The external display is selected. Press Fn + F3 or + P to switch the display. Wait until the display has been switched completely before pressing Fn + F3 or + P again. z When using an external display, • Check the cable connection. • Turn on the display. • Check the settings of external display. z The display is turned off by the power-saving function. To resume, do not press the direct selection keys, but press any other key like Ctrl. z The computer entered sleep or hibernation by the power-saving function. To resume, press the power switch. z The screen is darker when the AC adaptor is not connected. Press Fn + F2 and adjust the brightness. As you increase the brightness, battery consumption increases. You can separately set the brightness for when the AC adaptor is connected and when not connected. z Press Fn + F8 to turn off the concealed mode. The screen is disordered. During Simultaneous display, one of the screens becomes disordered. z Changing the number of display colors and resolution may affect the screen. Restart the computer. z Connecting/disconnecting an external display may affect the screen. Restart the computer. z Resuming from sleep or hibernation may affect the screen of the external display. Restart the computer. z When using the Extended Desktop, use the same display colors for the external display as those used by the LCD. If you continue to experience problems, try changing the display. Right-click on the desktop, and click [Graphics Properties...] - [Display]. z Simultaneous display cannot be used until Windows startup is complete (during Setup Utility, etc.). The external display does not work normally. z If the external display does not support the power saving function, it may not work normally when the computer enters the power saving mode. Turn off the external display. „ Touch Pad / Touchscreen (only for model with touchscreen) The cursor does not work. Cannot input using the touch pad. Cannot input using the touchscreen. Cannot point the correct position using the included stylus. z When using the external mouse, connect it correctly. z Restart the computer using the keyboard. Press and press Î twice, and press Ï to select [Restart] and press Enter. z If the computer does not respond to keyboard commands, read "No response" (Î page 25). z Set [Touch Pad] to [Enabled] in the [Main] menu of the Setup Utility. z The drivers for some mice may disable the touch pad. Check your mouse's operat- ing instructions. z Set [Touchscreen Mode] to [Auto] or [Tablet] in the [Main] menu of the Setup Utility. z Perform the touchscreen calibration (Î page 15). Appendix 24