Panasonic Toughbook CF-51ECCDBBM Operating Instructions Manual

Also see for Toughbook CF-51ECCDBBM: User guide Operating instructions

25 TroubleshootingWhen the previous item isnot the causez Press F9 in the Setup Utility. This will restore the Setup Utility’s settings to theirdefault values (except the password settings).z Try removing all peripheral devices.z Check a disk error using the following procedure.A Display [Local Disk (C:) Properties].Select [Local Disk(C:)] with the right button in [start] - [My Computer],and select [Properties].B Select [Tools] - [Check Now].C Select [Start] after selecting required items in [Check disk options].z At startup, hold down F8 when [Panasonic] boot screen disappears*1 , and releaseyour finger when the Windows Advanced Option Menu is displayed. Start the com-puter in Safe Mode, and confirm the details of the error.*1 When [Password on boot] is set to [Enable], [Enter Password] appears after the [Panasonic]boot screen disappears. Hold down F8 soon after inputting the password and pressingEnter. DisplayNo display after powering on z When there is no display to an external display,• Check your cable connection to the external display.• Confirm your display is powered on.• Check the settings for your external display.z The display destination may be set to the external display.Try changing the display by pressing Fn + F3.If you want to switch the display destination repeatedly by pressing Fn + F3, makesure that the display destination has switched completely each time before pressingFn + F3 again.z When displaying only through an external display, if the computer is shut down byusing the standby or hibernation function, there will be no display on the LCD unlessthe external display is connected when operations are resumed. In this case, con-nect the external display or press Fn + F3.z Press Fn+F2 and adjust the brightness.The power has not beenturned off, but after a certainperiod of time, there is nodisplayz Has the computer been set to the power-saving mode?To resume operation of your computer from the condition the power of the display isoff (for energy conservation purposes), press any key unrelated to the direct trigger-ing of a selection, like Ctrl.z To save power, your computer may have automatically entered the standby mode(power indicator blinks green) or hibernation mode (power indicator turns off). Insuch cases, press the power switch.When the battery pack isused, the screen is darkerthan when the AC adaptor isconnectedz Press Fn + F2 and adjust the brightness. Note, however, that when the brightnessis increased, the battery running time will become shorter.Brightness can be set to separate levels for when the AC adaptor is connected andwhen it is disconnected.The cursor cannot be con-trolled properlyz If you are using an external mouse, ensure that the external mouse has been con-nected correctly.z Restart the computer by using the keyboard (Press , U, and select [Restart] withR).z If the computer does not respond to keyboard commands, read “No response”(Î page 27).An afterimage appears(e.g., green, red, and bluedots remain on the display)or there are dots not dis-playing the correct colorsz If an image is displayed for a prolonged period of time, an afterimage may appear.This is not a malfunction. The afterimage will disappear when a different screen isdisplayed.z High-precision and advanced technologies are necessary in the production of colorliquid crystal displays (color LCDs). Therefore, if 0.002% or less of the picture ele-ments either fail to light or remain constantly lit (that is, more than 99.998% of ele-ments are functioning properly), no defect is considered to exist. Starting Up