Panasonic PANAFLAT TX-D5L31F - Manual (Page 20)

Trouble Shooting
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For safety, please observe the following points.
• When trouble occurs, disconnect the power plug
immediately and contact your dealer.
If smoke comes out of this unit or a bad odor or strange noise comes out, continuing
to use the unit can cause a fire or electrical shock. Turn the power OFF immediately,
unplug the power cord from the outlet and contact your dealer.
• Absolutely do not attempt to remove the rear cover.
There are parts at hiqh voltage inside, so touching them can cause an electrical
shock. Leave inspection, adjustment and cleaning of the interior to your dealer.
• Do not allow anything inside the casing.
If liquid or a foreign object should get inside accidentally, immediately turn the power
OFF, unplug the power cord from the outlet and contact your dealer. Continuing to
use the unit can cause a fire, electrical shock or breakdown of the unit.
If trouble occurs with the display unit, perform the following checks and take the
indicated action; if the trouble persists, please consult with your dealer.
Symptom Check Action
The LED Power Indicator
does not light (is dark). AC Power cord / plug
Power Switch (Right Side)
Plug the AC power cord into a grounded outlet
correctly.
Press the Power Switch.
There is no image and
LED Power Indicator is
yellow.
Signal cable
Computer (The power saving
function might have operated.)
Contrast, Brightness and
Backlight adjustments.
Connect the Signal Cable correctly.
Release the power saving function
(See "Procedure” Page 16).
Adjust the Contrast, Brightness and Backlight
correctly (See Page 13).
The LED Power Indicator
does not go off (dark).
Power Switch Press the power switch one more time (Right Side)
The image is too large or
too small. It is displaced
from the correct position.
Part of the image is
missing.
The color of part of the
screen is changed.
is not the mode registered?
Is the mode guaranteed?
Use an on-screen function to perform the desired
settings.
Read the computer operation manual and change
the display mode to obtain the specified mode.
There are vertical or
horizontal stripes in the
image.
There is an after-image in
the image.
Perform theV. FINETUNE
(Vertical stripe), H. FINETUNE
(Horizontal stripe) adjustments
(In the1024 X 768 mode).
Liquid Crystal panel When the 1024 x 768 mode is set, perform the
adjustment so the stripe patterns are not
conspicuous.
Change the desktop pattern in modes other than
1024 X 768.
If the same image is displayed on the LCD for a
long period of time, a phenomenon called "burn-
in“ may occur where slight traces of the burned-in
screen pattern can still be observed when other
screen patterns are displayed.
Do not operate the display for approximately one
day and do not turn the power on.
Characters cannot be
seen clearly even after an
adjustment is performed.
M
The outlines of text are
sharp.
M
H. FINETUNE (Horizontal
stripe) adjustments
Does the video clock frequency
of the image signal exceed the
standard level (80 MHz)?
Has the Office mode been set?
Is the video levei correctly
adjusted?
Is the brightness or contrast
adjustment turned all the way
down?
Has the Dynamic or
Entertainment mode been set?
Perform the necessary adjustment untii the
characters dispiayed on the screen do not fiicker.
Lower the vertical frequency of the image signal to
set the video clock frequency to level below the
standard level (80 MHz).
Set the Standard mode.
Check the video signal level from the computer
and adjust it in the correct direction.
Adjust the brightness, backlight and contrast.
(Refer to the computer operation manual of the
computer that is used for further details.)
Set the Standard mode.
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