Troubleshooting - ViewSonic VG2235m User Manual

Troubleshooting

No power
• Make sure power button (or switch) is ON.
• Make sure A/C power cord is securely connected to the display.
• Plug another electrical device (like a radio) into the power outlet to verify that the
outlet is supplying proper voltage.
Power is ON but no screen image
• Make sure the video cable supplied with the display is properly secured to the
video output port on the back of the computer. If the other end of the video cable
is not attached permanently to the display, properly secure it to the display.
• Adjust brightness and contrast.
• If you are using an Macintosh older than G3, you need a Macintosh adap
Wrong or abnormal colors
• If any colors (red, green, or blue) are missing, check the video cable to make
sure it is securely connected. Loose or broken pins in the cable connector could
cause an improper connection.
• Connect the display to another computer.
• If you have an older graphics card, contact ViewSonic
Control buttons do not work
• Press only one button at a time.
for a non-DDC adapter.
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