Panasonic PANASYNC TX-D7F21 - Manual (Page 21)

Trouble Shooting
For safety, please observe the following points.
• When trouble occurs, turn the power OFF 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 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.
• Do not put 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.
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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
There is no display.
AC power cord/plug
Power switch
signal cable
The power saving function might
have acted (if so the pilot LED
will be yellow).
Plug the power cord into the outlet correctly.
Press the power switch.
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.
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The image is too large or too
small, or it is displaced from
the correct position.
The mode is not registered. Perform the desired settings and then save them
by waiting 20 seconds or pressing the Q] “Exir key.
The display color is abnormal.
(Example) The color is
uneven or off-color.
The image distortion and or
tilt is large.
Is there something that produces
a magnetic field nearby?
(Examples) Television monitor,
another computer display unit,
speaker, etc.; was the orienta­
tion of the monitor perhaps
changed while It was in use?
Remove the source of the magnetic field.
Perform degaussing (See Page 12).
Make sure your cable is correct.
Connect the signal connector correctly.
Try a different orientation.
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The background of the image
is bright.
The background of the image
is colored.
The character gets partially
distorted.
The image is dark.
Check the signals from the
computer.
Sync - on - Green video signal? The Display unit does not work correctly with
Sync - on - Green video signal.
Change to a video card with HA/ separate or H/V
composite signals.
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Characters cannot be seen
clearly: the image is too dark.
Is the image signal level correctly
adjusted?
Is the brightness or contrast
adjustment turned all the way
down?
Check the video signal level from the computer
and adjust it in the correct direction (See Page 12,
Video Level).
Adjust the brightness and contrast (See Page 9).
The screen size and position
do not change. Is the input synchronization signal
within the operating range?
Check the video output mode from the computer,
and select a mode within the display unit operating
range.
For details, please read the Operation Manual of
the hardware you are using.
The front panel keys fail to
operate. Are 2 or more keys being
operated at the same time? Operate only one key at a time.
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