Yamaha PJP-10UR Quick Start Manual page 10

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Functions of the LEDs
Microphone LEDs
2
1
Normal: 124 light up
Microphone muted: 124 blink
Waiting for firmware update: All blink
During firmware update: 13 and 24 blink
alternately
Firmware update error: Off
Speaker LED
Normal: Lights up
Speakers muted: Blinks
Maximum volume: Blinks 5 times
Waiting for firmware update: Blinks
During firmware update: Off
Firmware update error: Off
10 English
Information LED
3
4
Normal: Off
Waiting for firmware update: Blinks in red
During firmware update: Off
Firmware update error: Blinks in red