User`s manual

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1 Power button/indicator ( )

Press to turn the product on. Press and hold the power

button for two or more seconds to enter standby mode.

2 Volume +/- button/indicator ( )

Press to adjust the speaker volume. Hold down the

appropriate button for 0.5 or more seconds to

continuously increase or decrease the volume.

Press both the + and - buttons ( ) simultaneously

for two or more seconds to switch the output device

between the built-in and external speakers. (→ page 28)

3 Volume level indicator

It normally indicates the input level of an incoming

voice. It indicates settings when adjusting the speaker

volume or when selecting an output speaker. (→ page 6)

4 Tuning fork button/indicator ( )

It lights up or flashes orange if there is a problem. If a

problem is indicated, press the tuning fork button ( )

to activate the voice guidance about the detected

problem.

When it is pressed and held for two or more seconds, the

product automatically measures acoustic conditions and

tunes the audio settings to an optimal condition

(automatic audio tuning). (→ page 25)

5 Bluetooth button/indicator ( )

Press to pair or connect with a Bluetooth-based

smartphone or tablet.

If this button is pressed while being connected to a

Bluetooth device, Bluetooth will be disconnected.

6 NFC logo (N-Mark)

Placing an NFC (Near Field Communication)-equipped

Bluetooth compatible smartphone or tablet over this

function allows you to pair or connect it with the

product, or to disconnect it.

7 Built-in speaker

Outputs an incoming voice.

Controls and functions

Control Unit (YVC-CTU1000)

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