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Troubleshooting
The following table shows conventional problems and the corresponding solutions. Inform yourself first of all using this table
before you contact our hotline or service department.
If the information provided for troubleshooting does not bring about success, switch OFF the unit via the
mains switch and pull the mains plug out of the plug outlet.
Do not attempt to repair the unit yourself and under no circumstances should you remove the rear cover
from the set.
DEFECT
POSSIBLE CAUSE
No picture and no sound,
D Mains switch in position "0" (OFF).
although the mains plug is
D Mains plug of unit is not inserted into the
inserted and the unit is
switched on.
D Defective mains cable .
Screen dark.
D Contrast setting too low.
D No input signal, wrong input selected.
Weak or excessive
D Colour not correctly set.
colours.
D Connection cable not correctly
The picture is cut off or the
D Picture position not correctly set.
picture is not centred.
The picture is too large or
D Picture format set wrongly.
too small.
The remote control is not
D The batteries are flat.
working.
D There is an obstruction between the
D The remote control is located
The displayed picture is
D The picture quality is not set correctly.
too dark.
The picture is displayed,
D The sound is switched to mute.
but there is no sound.
D Set volume to minimum.
Individual letters are not
displayed (PC mode).
Horizontal stripes with TV
D Signal source is set up before the
or video signals.
D Screening of the video cable is insuffi-
To reset all settings to their original status, use the menu option
32
All manuals and user guides at all-guides.com
plug receptacle.
connected.
remote control and the sensor.
outside of its operating range.
display.
cient.
<Setup ⇒ OSD ⇒ Reset to factory defaults>!
POSSIBLE REMEDY
D Shift mains switch to position "I".
D Insert the mains cable plug into the plug
receptacle.
D Call the service hotline.
D Set the brightness and/or contrast correctly
(see menu option <Picture>).
D Check the connection cable; assign correct
input to source.
D Set the colour under the menu option
<Picture>.
D Connect the cable correctly.
D Correct the picture position.
Use the auto setup function.
D Repeatedly press the button [FORMAT],
until the picture is displayed as a full screen.
D Insert the new batteries.
D Remove the obstruction between the remote
control and the sensor.
D Operate the remote control within the speci-
fied range.
D Correct the picture brightness and contrast
under the menu option <Picture>.
D Press the
button on the remote control.
D Increase the volume.
D Set the phase position under the menu option
<Setup ⇒ PC ⇒ Phase>.
D Check the setting for the picture width.
D Perform <Setup ⇒ PC ⇒ Auto Setup>.
D Always place the signal sources on the side
of or behind the display.
D Use only a high-grade signal cable with a
high screening attenuation.
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