Panasonic Toughbook CF-M34 Series Operating Instructions Manual

Also see for CF-M34 Series: Supplementary instructions Operating instructions Reference manual Supplementary instructions Reference manual

Contents

22 TroubleshootingDealing with Problems (Summary)No display after powering onThe power has not beenturned off, but after a cer-tain period of time, there isno displayThe cursor cannot be con-trolledAn afterimage appears (e.g.,green, red, and blue dotsremain on the display) orthere are dots not display-ing the correct colors.The external display nolonger displays properlyThe screen becomes disor-deredResolution or the number ofcolors of the display changesDuring simultaneous dis-play*, the screen of the ex-ternal display becomes dis-orderedWhen setting the screensaver,an error may occur during aresume operationWhen 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 changing the display by pressing Fn + F3 .When displaying only through an external display, if the computer is shut down by usingthe standby or hibernation function, there may be no display on the LCD unless theexternal display is connected when operations are resumed. In this case, connect theexternal 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 display is off(for energy conservation purposes), press any key unrelated to the direct triggering of aselection, like Shift .To save power, your computer may have automatically entered the standby or hiberna-tion mode. ( “Computing On the Road”) Press the power switch.Did you repeatedly and continuously press Fn + F3 ?Before holding down Fn + F3 continuously, make sure the active display has beencompletely switched.Restart the computer by using the keyboard (e.g., ).If an image is displayed for a prolonged period of time, an afterimage may appear. Thisis not a malfunction. The afterimage will disappear when a different screen is displayed.High-precision and advanced technologies are necessary in the production of color liquidcrystal displays (color LCDs). Therefore, if 0.002% or less of the picture elements eitherfail to light or remain constantly lit (that is, more than 99.998% of elements are function-ing properly), no defect is considered to exist.When an external display not compatible with the power saving mode is used with thecomputer, the external display may no longer display properly when the computer enters thecondition the power of the display is OFF (for energy conservation purposes). In suchcases, turn off the power to the external display.Changing the number of colors of the display may affect the screen. Restart the computer.After the display destination of the screen is switched with Fn + F3 , the resolution ornumber of colors of the display may change. Set the display again.Try changing the display by pressing Fn + F3 .If you continue to experience problems, try changing the display in the following menu.Windows 2000 : [Start] - [Settings] - [Control Panel] - [Intel ® Graphics Technology].Windows XP : [Start] -[Control Panel] - [Appearance and Themes] - [Display] - [Set-tings] - [Advanced] - [Intel ® Graphics Technology].When the computer enters the standby or hibernation mode while the screensaver is run-ning, an error may occur during a resume operation. In such cases, turn off the screensaveror try changing the pattern of the screensaver.Display* To display the same screen on both the internal LCD and external display:Simultaneous display = Intel (R) Dual Display Clone in [Intel (R) Extreme Graphics Controller Properties]The computer may not start up from your LAN, even if [LAN] is set prior to other devices inthe Setup Utility.When this problem occurs, start up Windows by one of the following procedures.• Press Esc while [Press F2 to enter SETUP] is displayed, and then select [LAN] fromthe Boot First Menu.• Press F12 while [Press F2 to enter SETUP] is displayed.Starting UpThe computer cannot startup from a LAN