Panasonic Toughbook CF-50 Series Manual

Also see for Touchbook CF-50 Series: Operating instructions Operating instructions Operating instructions Reference manual Operating instructions

59No display after poweringonThe power has not beenturned off, but after a cer-tain period of time, thereis no displayWhen the battery pack isu s e d , t h e s c r e e n i sdarker than when the ACadaptor is connectedThe cursor cannot becontrolled properlyAn afterimage appears(e.g., green, red, and bluedots remain on the dis-play) or there are dots notdisplaying the correctcolorsThe screen becomes dis-orderedDealing with Problems (Advanced)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.Try switching the display by pressing Fn + F3 .If you want to switch the display destination repeatedly by pressing Fn + F3 ,make sure that the display destination has switched completely each time beforepressing Fn + F3 again.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 LCDunless the external display is connected when operations are resumed. In thiscase, connect the external display or press Fn + F3 .Has the computer been set to the power-saving mode?To resume operation of your computer from the condition the power of the displayis off (for energy conservation purposes), press any key unrelated to the directtriggering of a selection, like Ctrl .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.Press Fn + F2 and adjust the brightness. Note, however, that when the bright-ness is 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.If you are using an external mouse, ensure that the external mouse has beenconnected correctly.Restart the computer by using the keyboard (Press , U , and select[Restart] with , then press Enter ).If the computer does not respond to keyboard commands, read “No response”( page 64).If an image is displayed for a prolonged period of time, an afterimage may appear. This isnot a malfunction. The afterimage will disappear when a different screen is displayed.High-precision and advanced technologies are necessary in the production of colorliquid crystal displays (color LCDs). Therefore, if 0.002% or less of the pictureelements either fail to light or remain constantly lit (that is, more than 99.998% ofelements are functioning properly), no defect is considered to exist.Changing the number of colors of the display may affect the screen. Restart the computer.Windows XPWhen using Dualview, use the same display colors for the external display asthose used by the LCD.DisplayWhen the previous itemis not the causePress F9 in the Setup Utility ( page 49). This will restore the Setup Utility’ssettings to their default values (except the password settings).Try removing all peripheral devices.Check a disk error using the following procedure.1 Display [Local Disk (C:) Properties].Windows 2000Select [Local Disk(C:)] with the right button in [My Computer], and select [Properties].Windows XPSelect [Local Disk(C:)] with the right button in [start] - [My Computer], and select [Properties].2 Select [Tools] - [Check Now].3 Select [Start] after selecting required items in [Check disk options].At startup, hold down F8 when [Panasonic] boot screen disappears, andrelease your finger when the Windows Advanced Option Menu is displayed. Startthe computer in Safe Mode, and confirm the details of the error.Starting Up (continued)