ViewSonic G800 User Guide - Page 32

Problem... Possible Cause... Image is scrollng or unstable Scanning frequency outside acceptable range? Image is not centered, Horizontal, vertical positioning too small or too large or horizontal, vertical size? Characters appear dark Brightness and contrast at minimum? Color is not pure Build-up of magnetic fields within the monitor? Remedy... Reconfigure the graphics board. Adjust the horizontal, vertical positioning and size controls. Adjust brightness and contrast. Use the degauss function to clear or degauss the magnetic fields. (Page 9) Magnetic object nearby? Reorient object or monitor. Signal connector pin assignments incorrect? Use correct signal connector. Image bounces or has wavy oscillations Signal cable properly connected? Magnetic object nearby? Electric power wiring nearby? Connect signal cable properly. Reorient object or monitor. Your office may have electric power wiring behind the wall. Move the monitor. Image is distorted Is the earth's magnetic field interfering with display? Face monitor east for best image quality. 24 Troubleshooting ViewSonic G800