Operation Manual

34
E
Troubleshooting
If you are experiencing any problem with your display, before
calling for service, please review the following troubleshooting
tips.
There is no picture or sound.
• Is the power cord disconnected? (See page 13.)
• Is the main power switch off? (See page 17.)
• Is the monitor in standby mode (the power LED illuminating
in orange)? (See page 17.)
• Make sure correct input mode is selected. (See page 19.)
• If any external equipment is connected, make sure the
equipment is operating (playing back).
Remote control does not work.
• Are the batteries inserted with polarity (+,-) aligned? (See
page 15.)
• Are the batteries exhausted?
• Point the remote control unit toward the monitor’s remote
control sensor. (See page 15.)
• Is the remote control operation in MONITOR LOCK of
OTHERS menu enabled? (See page 28.)
Sound from left and right speakers is reversed.
Sound is heard from only one side.
• Are audio cables connected properly? (See page 12.)
There is a picture but no sound.
• Is the sound muted? (See page 18.)
• Make sure the volume is not set to minimum. (See page
18.)
• Are audio cables connected properly?
• When AUDIO OUTPUT is set to VARIABLE2 in the AUDIO
menu, the speaker is muted. Check the setting. (See page
26.)
Unstable video.
• The signal may be incompatible. (See pages 38 and 39.)
The video from the HDMI input terminal does not appear
properly.
• Is the HDMI cable HDMI standard compliant? The monitor
will not work with cables that are not standard compliant.
• Is the input signal compatible with this monitor? (See pages
38 and 39.)
The video from DisplayPort input terminal does not
appear correctly.
• Is the input signal compatible with this monitor? (See page
38.)
• Is the DisplayPort cable DisplayPort standard compliant?
The monitor will not work with cables that are not standard
compliant.
The video from D-sub input terminal does not appear
correctly.
•
Is the input signal compatible with this monitor? (See page 38.)
Video color is strange.
• Is the PICTURE menu setting correct? You can execute
RESET to return to the factory default settings.
(See page
25.)
Control buttons do not work.
There is no picture.
• Load noises from outside may be interfering with normal
operation. Turn off the main power and turn it on after
waiting at least 5 seconds, and then check the operation.
(See page 17.)
• Turn on the monitor rst before turning on the computer or
playback device.
The input mode changes automatically.
• When the NO SIGNAL AUTO INPUT SEL. is ON and no
signal is present in a selected input mode, the monitor
automatically changes the selected mode to a mode where
a video signal is present.
The input mode may change in the following cases:
- When a computer is in standby mode.
- When video play is stopped with a playback device.
The touch panel does not respond.
• Is the USB cable connected properly?
• Use only the supplied USB cable. If the commercially
available USB cable is used, the touch panel may not
operate correctly.
If you want to position the monitor further away than the
USB cable will allow, extend the cable using a USB cable
with a repeater.
• When USB PORT SELECTION is OPTION, the touch panel
cannot be used with the computer that is connected to this
monitor.
The response of the touch panel is slow.
Some parts of the screen do not respond.
A different place is touched.
• Is the screen exposed to direct sunlight or other strong
light? The touch panel uses infrared rays and thus may not
operate correctly.
• Is there an obstacle between the infrared transmitter/
receiver and the touch pen or your nger? An obstacle will
prevent correct operation. If your ngers or a sleeve are too
close to the screen, correct operation will not be possible.
• Is the infrared transmitter/receiver dirty? Gently wipe off
any dirt with a soft cloth.
•
If the touch panel is touched with a small tip less than about
1/16 inch (2 mm) x 1/16 inch (2 mm), the touch may not be
detected by infrared and correct operation will not take place.
• When starting your computer or connecting the USB cable,
do not touch the touch panel. If you touch the touch panel,
this may be detected as an element failure in the infrared
transmitter/receiver and incorrect operation will result.