Message Cause and SolutionSub-Camera is notconnected.Check the connection.• A cable or cord is not properly connected.→ Check that all cables to the KX-VC500 are connected properly.(Page 52)• The sub video camera is not turned on.→ Turn on the sub video camera.Sub-Camera source is notcompatible.• A cable or cord is not properly connected.→ Check that all cables to the KX-VC500 are connected properly.(Page 15)• The signal input from the sub video camera is invalid.→ A valid signal cannot be received from the connected sub video camera.Contact your dealer.Check the display resolution. • The computer’s display resolution or refresh rate is incompatible withthe KX-VC500.→ Set your computer’s resolution and refresh rate to a setting compatiblewith the KX-VC500. (Page 49)This IP Address is already inuse.• On the network you are using, another device is already using the IPaddress you have input for the KX-VC500.→ Make sure that all devices on the network have unique IP addressesassigned.Cooling Fan Malfunction.Please turn off the systemand call for service.• The CPU cooling fan within the device has stopped.→ Quickly turn off the power. Contact your dealer.Check main camera settingSet the main cameraHDMI output to 1080i.If [#] is pressed, the systementers safe mode after restart.• A standard definition (640 ´ 480p, 720 ´ 480p) video camera signal hasbeen detected.→ Change the video camera’s resolution to HD (1920 ´ 1080i).Note• If you enter Safe Mode during a video conference call, the call willbe disconnected.Check main camera settingSet camera operatingfrequency to nHz.If [#] is pressed, the systementers safe mode after restart.Note• The field frequencysetting of theKX-VC500 (50 or 60)is represented by n.• A video camera with a different field frequency to the KX-VC500 hasbeen detected.→ Use a video camera with the same field frequency as the KX-VC500.Note• If you enter Safe Mode during a video conference call, the call willbe disconnected.User Manual 95Additional Information