Viewsonic CD4225 User Manual

ViewSonic CD4225

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• The signal cable should be completely connected to the display card/computer.

• The display card should be completely seated in its slot.

• Monitor and computer power should be switched ON.

• Check to make sure that a supported mode has been selected on the display card or system being 

used. (Please consult display card or system manual to change graphics mode.)

• Check the monitor and your display card with respect to compatibility and recommended settings.

• Check the signal cable connector for bent or pushed-in pins.

• If nothing is displayed on the screen when HDCP device is connected, reset the power of the device.

• Unplug the power cord of the monitor from the AC outlet to turn off and reset the monitor.

• Please be aware that LCD technology may experience a phenomenon known as Image Persistence. 

Image Persistence occurs when a residual or “ghost” image of a previous image remains visible on 

the screen. Unlike CRT monitors, LCD monitors’ image persistence is not permanent, but constant 

images being displayed for a long period of time should be avoided. To alleviate image persistence, 

turn off the monitor for as long as the previous image was displayed. For example, if an image was on 

the monitor for one hour and a residual image remains, the monitor should be turned off for one hour 

to erase the image.

As with all personal display devices, VIEWSONIC recommends displaying moving images and using a 

moving screen saver at regular intervals whenever the screen is idle or turning off the monitor when not 

in use.

• Signal cable should be completely attached to the computer.

• Use the OSD controls to focus and adjust display by increasing or decreasing the fine adjustment.

• Check the monitor and your display card with respect to compatibility and recommended signal 

timings.

• If your text is garbled, change the video mode to non-interlace and use 60 Hz refresh rate.

• Check to see if the DVD/HD input connector is selected.

• The power cord should be connected.

• The main power switch should be turned on.

• Make certain the computer is not in a power-saving mode (touch the keyboard or mouse).

• Use the OSD Image Adjust controls to increase or decrease the coarse adjustment.

• Check to make sure that a supported mode has been selected on the display card or system being 

used. (Please consult display card or system manual to change graphics mode.)

• Check to see if speaker cable is properly connected.

• Check to see if mute is activated.

• Check to see if volume is set at minimum.

• Check the Remote Control’s batteries status.

• Check if batteries are inserted correctly.

• Check if the Remote Control is pointing at the monitor’s remote sensor.

Either light vertical or horizontal stripes may appear, depending on the specific display pattern. This is 

no product fault or degradation.