88
Troubleshooting
Before you call for service, determine the symptoms and make a few simple checks as shown below.
Symptoms
Checks
Picture
Sound
Interference
Noisy Sound
Electrical Appliances
Cars / Motorcycles
Fluorescent light
Normal Picture
No Sound
Volume
(Check whether the mute function has been activated on the remote control.)
No Picture
No Sound
Not plugged into AC outlet
Not switched on
Picture and Brightness/Volume setting
(Check by pressing the power switch or POWER ON or STANDBY button on the remote control.)
No Picture
Normal Sound
If a signal with a non-applicable colour system format, or frequency is input, only the input
terminal indication is displayed.
No Colour
Normal Sound
Colour controls set at minimum level.
Colour system
No remote control operations can be performed.
Check whether the batteries have discharged completely and, if they have not, whether they were
inserted properly.
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cannot be operated by any other remote control.)
A cracking sound is sometimes heard from the unit.
If there is nothing wrong with the picture or sound, this is the sound of the cabinet undergoing
very slight contractions in response to changes in the room temperature. There are no adverse
effects on the performance or other aspects.
The top or bottom of the picture on the screen is cut
off when I use the zoom function.
Adjust the position of the picture on the screen.
Areas at the top and bottom of the screen where
the image is missing appear when I use the zoom
function.
When using a video software program (such as a cinema size program) with a screen wider
than one in the FULL(toggle) mode, blank areas separate from the images are formed at the
top and bottom of the screen.
I can hear sounds coming from inside the unit.
When the power is turned on, a sound of the display panel being driven may be heard: This
is normal and not indicative of malfunctioning.
Parts of the unit become hot.
Even when the temperature of parts of the front, top and rear panels has risen, these
temperature rises will not pose any problems in terms of performance or quality.
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There is no picture displayed or sound output
sometimes.
When HDMI or DVI signals are input to the Display using a selector or distributor, sound
or images may not be output in the normal fashion depending on the selector or distributor
used.
The symptoms may be improved by turning the power off and on again, or by replacing the
selector or distributor.
The RS232C is uncontrollable
Check whether the connection has been made properly.
When controlling the RS232C command on page 15 from the RS232C terminal in the
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The LAN is uncontrollable
Check whether the connection has been made properly.
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using PJLink™ Protocol on page 79.
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such as whether the LAN cable is disconnected or the cable is not shielded.
There is no picture displayed or sound output from
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Check whether the connection has been made properly between the video (output)
equipment and twisted pair cable transmitter and between the twisted pair cable transmitter
and this product.
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This LCD Display uses special image processing. Hence a slight time lag may occur between image and audio, depending on the type of input
signal. However, this is not a malfunction.
