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Troubleshooting
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VTM-D15/A 15" MultiMedia Touch Panel Systems
Warning Messages and their Meanings
Use these messages to address panel issues.
Warnings and Messages
Cannot Display this Input Signal Check that the video resolution and frequency range are within
that specified for the display. Refer to the VTM-D15/A and VTM-
D15/AB Specifications section on page 3 for more details.
No Signal Input No signal inputs are detected from either the VGA-In or Video-In
connectors.
• Check that the power switch of your computer or video source is
in the “ON” position.
• Check that the video signal cable is properly connected.
• Ensure that no pins are bent in on the video input connector.
Main Control Menu Locked The main control menu (On Screen Display menu) is locked to
avoid unwanted adjustment.
• Press the AUTO button on the front of the panel for 15 seconds
to unlock the main control menu.
No Video Signal from VGA-In No signal input is detected from the VGA-In connector.
• Check that the power switch of your computer is in the “ON”
position.
• Check that the VGA cable is properly connected to the VGA-IN
connector.
• Ensure that no pins are bent in on the video input connector.
Wait for Automatic Adjustment The display is detecting the input signal and then automatically
adjusting the display parameters accordingly.
• It takes around 5 seconds to finish the whole process.
• Run the auto adjustment by pressing every time you change the
resolution or refresh rate.
Use 1024 x 768 for best performance The current resolution of the video signal is not 1024 x 768.
The performance of this display is optimized for a resolution of
1024 x 768.
Set the incoming signal to those parameters.