KX-VC500CX, KX-VCA001X - Panasonic PBX Service Manual (repair manual). Page 16

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16
KX-VC500CX/KX-VCA001X
6.2.
Audio
Problem
Cause and Solution
The other party cannot hear your voice.
• The microphone is muted.
→ Press [MIC Mute] on the remote control, or press the MIC Mute button on 
the Boundary Microphone to unmute the microphone.
• The microphone is being obstructed.
→ During the video conference call, do not block the microphone with your 
hand or other object.
• You are too far from a microphone.
→ Speak close to a microphone.
• More than 5 Boundary Microphones are connected in cascade.
→ Connect no more than 4 Boundary Microphones at a time.
• There may be a problem with your communication lines.
→ If you cannot hear a sound from the compatible set, please check the net-
work connections.
• No sound is heard through the microphone, even when connected to 
the compatible set.
→ Replace the microphone.
The sound cuts out.
• You are too far from a microphone.
→ Speak close to a microphone.
• The microphone or the KX-VC500 is being moved during a video con-
ference call.
→ Do not move the KX-VC500 or the microphone during a video conference 
call.
• The microphone is being obstructed.
→ During the video conference call, do not block the microphone with your 
hand or other object.
• There may be a problem with your communication lines.
→ Sound through the compatible set is cut, please check the network con-
nections.
• Sound from the microphone is cut, even when connected to the com-
patible set.
→ Replace the microphone.
The sound volume is low or cannot be heard 
at all.
• The volume settings of the KX-VC500 are too low.
→ Increase the volume level.
• The other party’s microphone has been muted.
→ Have the other party unmute their microphone.
• The display’s volume settings are too low.
→ Increase the volume level of the display.
You hear audio feedback.
• The microphone is too close to the display or to speakers.
→ Keep microphones at least 1 m (3.3 ft) away from any display or speaker.
• The display’s volume settings are too high.
→ Decrease the volume level of the display.
Sound cuts out or echoes.
• Adjustments to the environment immediately after a video conference 
call has begun may not yet have completed.
→ Immediately after a video conference call has begun, be sure to speak in 
turn with other parties. The KX-VC500 will automatically adjust audiolev-
els so that all parties can easily be heard.
The other party hears noise.
• The Boundary Microphone cable is not properly connected.
→ Make sure that the cable connecting the Boundary Microphone with the 
KX-VC500 is fully and securely inserted on either end.
The orientation of the image and sound do not 
match (the voice of a person on a side of the 
screen comes from the opposite side’s 
speaker, etc.).
• The speakers are not properly positioned.
→ Check that the speakers are properly positioned.
• The speakers of the other party are not properly positioned.
→ Ask the other party to position speakers on either side of the display. If 
the other party places the display at the front of the room and the speak-
ers at the back, the microphone’s left/right spatial direction may be 
reversed, and the orientation of the image and sound will not match.
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