ViewSonic SD-Z225 SD-Z225 User Guide M Region (English) - Page 21
Troubleshooting
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Troubleshooting No power • Make sure power button (or switch) is ON. • Make sure A/C or DC power cord is securely connected to the Zero Client Monitor. • 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 Zero Client Monitor is tightly 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 Zero Client Monitor, tightly secure it to the Zero Client Monitor. • 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 Zero Client Monitor to another computer. • If you have an older graphics card, contact ViewSonic® for a non-DDC adapter. Control buttons do not work • Press only one button at a time. 15