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10
Troubleshooting
Building Technologies
Fire Safety & Security Products
Problem
No image on display
screen
"Going to sleep"
message on screen
Display image is not
centered, too small or
too large in PC mode
Vertical or horizontal
noise is present in the
picture
Can see picture but no
sound is audible
Troubleshooting
1. Check that the power cord of the monitor has been
connected securely into wall outlet or grounded
extension cable or strip.
2. Power switch should be in the ON position and LED
is lit.
3. Check that the Brightness and/or the Contrast of the
display have not been turned down to minimum
levels [
11] .
1. Check that the signal cable is completely connected
to the video card/computer.
2. Check that the video card is completely seated in its
slot and the computer is switched on.
1. Press the Auto button (in DVI mode) or adjust
picture settings [
11] .
1. Press the Auto button or adjust Frequency and
Phase in the OSD menu [
1. Make sure that audio inputs are connected properly.
2. Check to see whether the volume is turned down
[
12] .
Troubleshooting
14] .
15
CMTC1713_1913 User Manual
19/12/2008
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