Troubleshooting and tips
When certain characters are ent
ered on the
keyboard, only numerals are written
Abeep sou ndsevery second
Cause Troubleshooting
The virtual numeric keypad of you
r device is
activated, see "
Virtual numeric
keyp ad", Page 16
► Press the ke y c ombination
Fn
+
Num
.
The notebook’s LCD screen remains blank
LCDscreenLCDscreenistoodark
Cause Troubleshooting
Monitor is switched off.
► Press a key or touch the touchpad .
External monitor or television set connected. ► Press the key combination
Fn
+
F10
(switch screen output).
The LCD screen is difficult to
read
LCDscreenLCDscreen
Cause Troubleshooting
Reflected glare ► Turn the notebook or alter the tilt of the LCD
screen.
► Increase the brightness of the screen.
The external monitor remains blank
Monitor
Cause Troubleshooting
Monitor is switched off. ► Switch the external monitor o
n.
Power saving has been activated (monitor is
blank).
► Press any key to continue.
Brightness is set to dark.
► Adjust the brightness of the monitor.
Screen output is set to the no
tebook’s LCD
screen
► Press the key combination
Fn
+
F10
(switch screen output).
The external monito r’s powe
r cable or data
cable is not connected prope
rly.
► Switch off the external mo nitor and the
notebook.
► Check whether the pow er cable is plugged
properly into the external monitor and into
the power socket.
► Check whether the data cable is pro perly
connected to the no tebook and the external
monitor (if it is plugged in with a connector).
► Switch on the external monitor and the
notebook.
48 A26391-K245-Z220-1-7619, edition 1
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