Panasonic PanaFlat LC40 - Manuel (Page 23)

Trouble Shooting
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 high voltage inside, so touching them can cause an electrical
shock. Leave inspection, adjustment and cleaning of the interior to your dealer.
o 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.
1 íT‘w^
If trouble occurs in the display unit, perform the followina checks and take the
indicated action; if the trouble persists, please consult with your dealer.
Symptom Check Action
Power Indicator LED.
There is no display.
The pilot LED does not
go on.
power cord/plug
power switch
AC adapter
signal cable
The power saving function
might have acted (if so the LED
will be yellow),
contrast, brightness, backlight
power switch
Plug the power cord into the outlet correctly.
Press the power switch.(Until the LED lights)
Connect the signal cable correctly.
Release the power saving function by operating the
mouse or keyboard.
For additional details please read the Operation
Manual of the hardware you are using.
Adjust the contrast, brightness and backlight correctly.
Press the power switch one more time.{Until the
LED put out lights)
The mode is not registered.
The mode is not specified.
The image is too large or
too small, or it is displaced
from the cored position.
Part of the image is
missing._____________
Perform the desired settings and then save them by
waiting 20 seconds or pressing the “MENU" key.
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 the V. FiNETUNE
(Vertical stripe), H. FINETUNE
(Horizontal stripe or noise)
adjustments
1024 X 768 mode only.
Liquid Crystal panel
Perform the adjustment until the stripe patterns are
not distinguishable. (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
x768.
Temporary screen bum-in occurs if the same image
is displayed on the LCD for a tong period of time. Do
not operate the display for approximately one
day and do not turn the power on.________________
on m
Characters cannot be
seen clearly.
The image is too dark.
V. FINETUNE (Vertical stripe),
H. FINETUNE (Horizontal
stripe) adjustments
Is the image signal level
correctly adjusted?
Is the brightness or contrast
adjustment turned all the way
down?
Perform the adjustment until the stripe patterns are
not distinguishable.
Check the video signal level from the computer and
adjust it in the correct direction.
Adjust the brightness and contrast.
SELF-TEST function
Signal cable
The image scrolls
continuously.
Press the MENU key to check the SELF-TEST
screen. Is either one of the numeric values for fH or
fV displayed in red? The input signal frequency
exceeds the specified range of this unit. Read the
operation manual of the computer and change the
display mode.
Connect the signal cable correctly.
The screen size and
position do not change
The front panel keys
fail to operate.
Is the input synchronization signal
within the operating range?
Are 2 or more buttons being
operated at the same time?
Check the video output mode from the computer,
and select a mode within the display unit operating
range.
For details, please read the Operating Instructions
of the hardware you are using.
Operate only one button at a time.
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