ViewSonic CDE7500 CDE7500 User Guide English - Page 31

5. Trouble Shooting Symptom The screen does not display anything; there is no sound, and the indicator does not come on Pictures shown on the product have dotted line or stripe interference Pictures are colorless The product has no accompanying sound The Display does not display anything, and gives a prompt indicating no signal input; the red indicator blinks Pictures shown on the Display are offset, do not cover the entire screen, go beyond the screen, or are blurred Short remote control distance, malfunction of remote control Possible Cause Looseness of power plug, power connection failure Signal interference caused by automobile, neon light, electric hair dryer, etc. Color saturation is set too low 1. Volume is set too low 2. Sound is muted Looseness or removal of the signal connection cable 1. Improper adjustment 2. Wrong display mode 1. The remote receiver of the product is blocked by some object 2. Battery level of the remote control is low Solution Check if the power cord is properly connected Do not use electric hair dryer near the product; adjust the antenna orientation to reduce interference Enter "Picture" settings to increase the color saturation 1. Adjust the volume to a proper level 2. Press the "MUTE" key on the remote control to unmute the product Check if the signal connection cable is loosened or has come off; if so, reconnect it 1. Use the auto adjustment function 2. Enter "Screen Adjustment" to adjust the horizontal or vertical position 3. Use the recommended mode 1. Move the object to avoid blocking the remote receiver 2. Replace the battery A link cannot be accessed via the browser 1. Wrong network parameter configuration 2. Improper network connection 3. Network service is not activated 1. Ask the network administrator for available network IP addresses and other parameters 2. Check if the network connection cable is properly connected 3. Consult the network service provider 23