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APPENDIX
6.2 Troubleshooting
Problem Possible Cause and Solution
No picture.
LED indicator is OFF.
Check if the LCD display is turned ON.
Check if the power cord is properly connected to the LCD display.
Check if the power cord is plugged into the power outlet.
LED indicator is
AMBER.
Check if the computer is turned ON.
Check if the computer is in standby mode, move the mouse or press
any key to wake up the computer.
Image position is incorrect. Adjust the H. POSITION and V. POSITION values. See IMAGE
SETTING on page 27 (for VGA source) or page 28 (for video signals).
The displayed texts are
blurry.
For VGA input, touch
on the keypad to auto-adjust the display.
Adjust the IMAGE SETTING (see page 28).
The OSD menu can’t be
called out.
The OSD is locked; unlock the OSD (see page 14).
Red, blue, green, white
dots appear on screen.
There are millions of micro transistors inside the LCD display. It is
normal for a few transistors to be damaged and to produce spots. This
is acceptable and is not considered a failure.
No audio output. Check if the volume is set to 0 (see page 14 or 37).
Check if AUDIO is set to OFF (see page 37).
For VGA or DVI input, check the audio setting of the computer.
Nothing happens when I
press
.
SOURCE DETECT setting is set to AUTO. To manually select the input
source signal, set SOURCE DETECT to MANUAL (see page 38).
PIP mode does not work. The main and sub input source signals are not compatible to be
displayed together in PIP mode. Check the PIP Compatibility Table for
details (see page 34).
Cannot adjust Backlight
setting.
AUTO BRIGHTNESS setting is ON, disable AUTO BRIGHTNESS (see
page 40).
The displayed picture looks
distorted.
Adjust the aspect ratio (see page 15 or 31).
Dew formed on or inside
the LCD display.
This normally happens when the LCD display is moved a cold room to
a hot room temperature. Do not turn ON the LCD display, wait for the
dew condensation to disappear.
46


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