Instruction Manual

FRESNL DE ENIT
If a problem occurs
UI 770 | 13
If the problem persists, please contact your local Sennheiser
Communications agent for assistance. Never repair or attempt to
repair the units as this will invalidate the warranty.
The other party
cannot hear you
Make sure that the mute button is in ”up”
position.
No connection
to the PC
Make sure that the cables are connected
correctly.
Increase the volume on your PC.
Your PC and the UI 770 are not compatibel.
Please contact your dealer.
Your voice can
hardly be heard
Make sure that the headset microphone is
positioned at the corner of your mouth.
Make sure that the volume of the headset
microphone is sufficient.
Make sure that the UI 770 is correctly
adjusted to your telephone.
The speaker
volume varies
Your telephone does not meet standard
requirements. Please contact your dealer.
The battery may be low.
Replace the battery
For possible solutions to problems, please refer to the
FAQ on our website at www.sennheiser.com > “Products” >
“Universal Interface”.
Problem What to do
UI_770_EN.fm Seite 13 Freitag, 15. Januar 2016 11:11 11