Yamaha YVC-1000 User Manual page 6

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Indicator status for each button
The status of the product is indicated by the indicator color and the light up/flash mode for each button.
Button type
Power button ( )
Volume + and - buttons
( )
Tuning fork button ( )
Bluetooth button ( )
5
Button status
Lit (Red)
Lit (Green)
Lit (Orange)
Flash (Orange)
Flash (Red)
Not lit
Lit (Green)
Flash (Green)
Not lit
Lit (Green)
Lit (Orange)
Flash (Orange)
High-speed flash (Orange)
Not lit
Lit (Green)
Flash (Blue)
High-speed flash (Blue)
Lit (Blue)
Status of the product
Standby
Power-on
Firmware error
Firmware being updated
Hardware error
Operation disabled
Speaker volume adjustable
Speaker selectable
Speaker muted
Operation disabled
Acoustic conditions good
Acoustic conditions bad
Automatic audio tuning being performed
Automatic audio tuning has been ended abnormally
Acoustic conditions bad (in normal mode)
Operation disabled
Bluetooth unconnected
Bluetooth connectable
Bluetooth pairing enabled
Bluetooth connected