VarTech Systems VT20A User Manual - page 11
20” Slow Scan User Guide 150-082
-9-
TROUBLESHOOTING
TROUBLESHOOTING
5
Section
In the event that you experience trouble with your Display, check the following items before
contacting Vartech Systems. The most common problems usually involve an incorrectly
configured Video Card or an incorrect connection from the Video Card to the Display. Do not
exceed the maximum refresh rate recommended for the display.
Problem
Troubleshooting Tips
No image on display screen
1. Check that power cord of the Display has been
connected securely into wall outlet or grounded
extension cable or strip.
2. Check that power switch of the Display has been
pressed and LED on front of Display is lit.
3. Check that Video (Signal) Cable from the Display has
been securely and correctly connected to the 15-pin
Video Connector on the rear panel of the Computer.
4. Check that Video Card is firmly seated in card slot of
Computer motherboard.
5. Check that the Brightness and/or the Contrast
adjustments of the Display have not been turned down
to minimum levels.
Picture is small or distorted and
Control Buttons will not correct
1. Check that the video signal being input from the Video
Card falls within the frequency range of the Display.
2. Check that Video (Signal) Cable from the Display has
been securely and correctly connected to the 15-pin
Video Connector on the rear panel of the Computer.
3. If you have used an adapter to convert the 15-pin Video
(Signal) Cable Connector from the Display to fit the
connector on the rear of the Computer, check that the
pin assignment of the adapter matches that of the
15-pin Mini D-Sub pin assignment of the Display.
Colors of image on screen are
abnormal
1. Check that a magnetized item is not nearby.
2. Check that Video (Signal) Cable from the Display has
been securely and correctly connected to the 15-pin
Video Connector on the rear panel of the Computer.
3. If you have used an adapter to convert the 15-pin Video
(Signal) Cable Connector from the Display to fit the
connector on the rear of the Computer, check that the
pin assignment of the adapter matches that of the
15-pin Mini D-Sub pin assignment of the Display.
4. Press and release Degauss button on the Display.
TROUBLESHOOTING GUIDE