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Maintenance and Troubleshootin
g
Connect correctly.
Ad
j
ust the volume.
Remo
ve obstacle between
con
trast settin
g
.
Note：Althou
g
h bri
g
ht spots or dark spot may appear on the screen ,this is a
uniqu
e characteristic of liquid crystal displays,and it does not constitute or imply
a machine defect.
Symptom
Possible cause Remedy
The
power is
not turned on
The main power switch is not
tur
ned on.
The power cord is
disconnected.
Tu
rn on the main power
switch.
Plug the power cord into
an AC power outlet
No video
The
input is not correctly
connected.
No signal input.
No
open lens cover.
Se
lect the appropriate input
source.
Remove the lens cover.
No audio
The projector is not correctly
conn
ected.
The volume is set to minimum.
Mute is turned on.
Check audio cable connect
correctly.
Press the MUTE button.
No remote
function
No
battery.
Remote signal be obstructed
Check battery of remote
controller.
projector and remote
controller.
Colors are
pale
Color density and color
matching are not correctly
ad
justed.
Color lose.
Adj
ust the RGB setting.
Check VGA cable.
Abnormal
brightness
& contrast
Brightness and contrast are
no
t correctly adjusted.
The lamp is nearing the end
of its service life.
Adjust the brightness and
Replace with a new lamp.
Video
is
blur
red
Focus or RGB phase is out of
ad
justment.
Adjust the focus and phase.
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