20
7.2. Troubleshooting
Symptom
Possible cause
Solution
No display
1.
The power cord has been disconnected.
2.
The main power switch on the back of
the monitor is not turned on.
3.
The selected input is not connected.
4. The monitor is in the standby mode.
1.
Plug the power cord.
2.
Make sure the power switch is turned
on.
3. Link signals to the monitor.
The monitor cannot display the booting
process of the PC.
1.
The input signals exceed the mode
supported by the monitor.
2. The HDMI wakeup function of the
monitor is not enabled.
1.
Make sure the input signals are within
the range of the mode supported by the
monitor.
2. Enable the HDMI wakeup function of the
monitor, Advanced→Boot Wake→HDMI
Wake→On.
The monitor receives interference or
noise can be heard..
This is caused by the surrounding electrical
devices or fluorescent light.
Move the monitor to other positions to
check if the interference is reduced.
Abnormal color
The signal wire is not correctly connected.
Make sure the signal wire is firmly
connected to the rear of the monitor.
The display is twisted, and there are
abnormal patterns.
1. The signal wire is not correctly
connected.
2. The input signal is beyond the capability
of the monitor.
1. Make sure the signal wire is firmly
connected.
2. Check if the video signal source is
beyond the range of the monitor. Please
check the specification of the monitor
against its specifications.
The displayed picture does not cover the
whole screen.
1.
The aspect ratio is incorrect.
2. The scanning mode may be incorrectly
set in Underscan.
3. If the picture size exceeds the screen
size, the scanning mode may need to be
set to be Underscan.
Use the aspect ratio in the screen menu
or the self-set zooming function to tune
the geometric shape of the screen and the
clock frequency parameter.
There is sound, but no picture.
The input source signal wire is incorrectly
connected.
Make sure video input and voice input are
both correctly connected.
There is picture, but no sound.
1.
The input source signal wire is
incorrectly connected.
2. The volume is minimized.
3.
{Mute} has been enabled.
4.
The external loudspeaker is not
connected.
1. Make sure video input and voice input
are both correctly connected.
2. Use [ ] or [ ] button to adjust the
volume.
3. Use [
] button to disable Mute.
4. Connect the external loudspeaker and
adjust the volume to a proper level.
Some picture elements are dim.
Some pixels on the screen may be not
activated.
This monitor is made by very high precision
technology. However, sometimes, some
pixels on the monitor may still be not
displayed. This is not a failure.
There is picture retention on the monitor
display after the monitor is powered
off. (Examples of motionless pictures
include: icon, video game, computer
image, and pictures displayed in 4:3
standard mode.)
Too long display of the motionless picture
Never display the motionless picture
for a long time, or the monitor will have
permanent picture retention.
