Headphones User Manual
30
Tab 3, 11
Tab 8, 16 Tab 7, 15 Tab 6, 14 Tab 5, 13 Tab 4, 12
EnglishTab2 ,  1 0
TROUBLESHOOTING
Bluetooth
® 
wireless technology
Auto off
Problem What to do
Cannot hear 
communications 
while listening to 
audio from AUX 
input or AUX input 
does not mute with 
incoming 
communications.
• Check headset prioritization settings. Refer to “Multifunction/
Audio priority switch” on page 18.
• Make sure all connections are secure (headset to intercom, AUX 
input to headset).
• Communications audio is not present unless the headset is 
connected to an intercom system.
Problem What to do
No audio to the 
headset while on a 
call.
• Check to make sure the headset and phone are paired, the multi-
function switch is in the top or middle position, and the devices 
are communicating with each other.
• Make sure the phone and headset are in range of the Bluetooth 
wireless technology (no more than 30 feet from each other).
• Make sure the volume of the Bluetooth wireless technology is 
turned up on the control module.
Note: On initial start-up, a 20-second delay may occur before audio 
can be heard.
The headset is not 
pairing with my 
phone.
• Turn the headset off, then on again.
• Follow your phone instructions to remove all devices previously 
paired with your phone.
• Repeat the steps for pairing the headset with your phone. Refer 
to “Pairing the headset with your phone” on page 19.
I cannot answer/end 
a call.
• Make sure your phone is properly paired and connected to the 
headset. Refer to “Making and answering calls” on page 22.
The headset does 
not reconnect to 
my phone when I 
turn it on.
• Make sure the phone has Bluetooth wireless technology enabled. 
• Turn the multifunction switch on to the top or middle positions.
•Press the Bluetooth function button.
Problem What to do
Headset does not 
shut off 
automatically.
• In the battery compartment, make sure Switch #1 is set to ON 
(default).
• Refer to “The operation switches” on page 9 for details on Auto 
Off functionality.
• It may take up to nine (9) minutes for the headset to shut off 
when not in use immediately after initial power up.
00_Cavu.book Page 30 Wednesday, April 25, 2012 10:10 AM










