Troubleshooting (Basic - Panasonic Toughbook CF-F9KWH011M Operating Instructions Manual

Troubleshooting (Basic)

Password
Cannot log on to Windows.
("The user name or password
is incorrect." is displayed.)
Display
When the screen becomes
black for a moment.
No display.
The screen is disordered.
The external display does
not work normally.
Battery
The battery indicator is
lights red.
The battery indicator is
blinking.
26
The user name (account name) includes an "@" mark.
If another user account exists:
Log on to Windows using another user account, and delete the account that
includes "@". Then create a new account.
If no other account exists:
You need to reinstall Windows (
When you set [Intel(R) video driver power saving function] - [Intel(R) Display Power Sav-
ing Technology] of Power Plan Extension Utility to [Enabled], if you do the following oper-
ations, the screen becomes black for a moment, but this is not a malfunction. You can
use it.
• Adjust the brightness of the screen with
• Remove and insert the AC adaptor.
While you are using motion video playback software, benchmark software for graphic, if error
screen is displayed or application software does not function normally, set [Intel(R) video
driver power saving function] - [Intel(R) Display Power Saving Technology] to [Disabled].
When you set [Intel video driver power saving function (Intel(R) Display Power Saving Tech-
nology)] of Power Saving Utility to [Enable], if you do the following operations, the screen
becomes black for a moment, but this is not a malfunction. You can use it.
• Adjust the brightness of the screen with
• Remove and insert the AC adaptor.
While you are using motion video playback software, benchmark software for graphic, if
error screen is displayed or application software does not function normally, set [Intel video
driver power saving function (Intel(R) Display Power Saving Technology)] to [Disable].
The external display is selected. Press
display. Wait until the display has been switched completely before pressing
+ P) again.
(or
The display is turned off by the power-saving function. To resume, do not press the direct
selection keys, but press any other key like
The computer entered
the power-saving function. To resume, slide the power switch.
The screen may become darker. Press
Changing the number of display colors and resolution may affect the screen. Restart the
computer.
The refresh rate of the internal LCD may be 40 hertz. Change the refresh rate of the
internal LCD.
A Right-click on the desktop, and click [Graphics Properties].
B Click [General Settings].
C If [Refresh Rate] of the Notebook is [40 Hz], change to [60 Hz] and click [OK].
If the external display does not support the power saving function, it may not work nor-
mally when the computer enters the power saving mode. Turn off the external display.
The battery level is very low (the charge is approx. 9% or less).
Connect the AC adaptor. You can use the computer when the indicator light is orange. If
you do not have an AC adaptor, save your data and power off your computer. After
replacing the battery pack with a fully charged one, turn your computer on again.
If blinking red:
Quickly save your data and power off your computer. Remove the battery pack and dis-
connect the AC adaptor, then connect them again. If the problem persists, contact your
technical support office. The battery pack or charging circuit may be defective.
If blinking orange:
• Battery cannot be recharged temporarily because the internal temperature of the bat-
tery pack is outside the acceptable temperature range for recharging. Your computer
can be used normally in this state. Once the range requirement is satisfied, charging
begins automatically.
• Software applications and peripheral devices (USB devices, etc.) are consuming too
much power. Exit the software applications currently running, and remove all peripher-
als. Once the range requirement is satisfied, charging begins automatically.
page 22 ).
Fn + F1 / Fn + F2 .
Fn + F1 / Fn + F2 .
Fn + F3 (or
Ctrl .
sleep/ standby or hibernation by
Fn + F2 to make the screen brighter.
+ P) to switch the
Fn + F3