NEC MultiSync LCD1560M - Manuel (Page 18)

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No Video
• If no video is present on the screen, turn the Power button off and on again.
• Make certain the computer is not in a power-saving mode (touch the keyboard or mouse).
Troubleshooting
–continued
No Sound
• Check to see if speaker cable is properly connected.
• Check to see if mute is activated.
• Check to see if volume in OSM is set at minimum.
USB Hub does not operate
• Check to make sure the USB cord is properly connected. Refer to your USB device
User’s Manual.