Panasonic Toughbook CF-29LCQGCBM Reference Manual

Also see for Toughbook CF-29LCQGCBM: User guide Operating instructions User guide Specifications Software guide

123Dealing with Problems (Advanced) 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 destination 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 timebefore pressing Fn+F3 again.z Press Fn+F2 and adjust the LCD brightness.The power has not been turned off, butafter a certain period of time, there isno displayz Has the computer been set to the power-saving mode? To resume operation ofyour computer from the condition the power of the display is off (for energyconservation purposes), press any key unrelated to the direct triggering of aselection, like Ctrl.z To save power, your computer may have automatically entered the standbymode (power indicator blinks green) or hibernation mode (power indicator turnsoff). In such cases, slide the power switch.When the battery pack is used, thescreen is darker than when the ACadaptor is connectedz Press Fn+F2 and adjust the LCD brightness. Note, however, that when theLCD brightness is increased, the battery running time will become shorter. TheLCD brightness can be set to separate levels for when the AC adaptor isconnected and when it is disconnected.The LCD brightness changes anumber of times when the AC adaptoris disconnectedz Intel(R) Display Power Saving Technology (Î page 37) is active and automati-cally changes the LCD brightness.Image colors are not reproduced asexpected when displayingphotographs or other imagesz We recommend removing the check mark from [Intel(R) Display Power SavingTechnology]. (Î page 37)An afterimage appears (e.g., green,red, and blue dots remain on thedisplay) or there are dots notdisplaying the correct colorsz If an image is displayed for a prolonged period of time, an afterimage mayappear. This is not a malfunction. The afterimage will disappear when adifferent screen is displayed.z High-precision and advanced technologies are necessary in the production ofcolor liquid crystal displays (color LCDs). Therefore, if 0.002% or less of thepicture elements either fail to light or remain constantly lit (that is, more than99.998% of elements are functioning properly), no defect is considered to exist.