SRS-XB402M | Help Guide | About the indicators

Turns off	The speaker has completed charging, or the charger such as the supplied AC adaptor is not connected.
Lights up	The speaker is being charged.
Flashes slowly	The built-in battery is running at less than 10% and needs to be charged.
Flashes 3 times and turns off	If you turned on the speaker, but it turns off after the indicator flashes 3 times, the built-in rechargeable battery does not have any power remaining. Charge the speaker.

The speaker that is in use can be charged if it is connected to an AC outlet via the supplied AC adaptor. In this case, it may take longer to charge the built-in battery depending on the conditions of use. Therefore, it is recommended to turn off the speaker when charging.
When you use the speaker at a loud volume for a long time, the built-in battery may run low even if the speaker is connected to an AC outlet. As a result, sound becomes low. This is not a malfunction. Turn off the speaker and charge the built-in battery sufficiently.
In an extremely cold or hot environment, charging stops for safety. If charging takes a long time, it also makes charging of the speaker stop. To resolve these issues, disconnect the supplied AC adaptor or a USB AC adaptor (commercially available) from the speaker and connect it within an operating temperature between 5 ℃ and 35 ℃ (41 °F and 95 °F). Then, charge the built-in battery again.

Turns off	The speaker is turned off.
Lights up (green)	The speaker is turned on. The Sound Mode is set to STANDARD.
Lights up (white)	The speaker is turned on. The EXTRA BASS mode or LIVE SOUND mode is set. When you purchase, the EXTRA BASS is set.
Flashes (white or green)
	Each time you press the – (volume) button or the + (volume) button, the indicator flashes once.
	When you operate the – (volume) button or the + (volume) button and the volume is set at the lowest (0) or highest (50) level, the indicator flashes 3 times.
	When the built-in battery is running at less than 10%, the indicator flashes slowly (in green or white). Charge the speaker.
	If you turned on the speaker, but it turns off after the indicator flashes 3 times (in green or in white), the built-in rechargeable battery does not have any power remaining. Charge the speaker.
	The speaker is being initialized.

Turns off	The built-in microphones are turned on.
Lights up (red)	The built-in microphones are turned off.

Lights up

The speaker is connected to a BLUETOOTH device.

Flashes quickly

The speaker enters the pairing mode.

Turns off	No connection information is found.
Lights up (green)	The speaker is connected to the network in the 5 GHz or 2.4 GHz band.
Lights up (orange)	The speaker is connected to the network only in the 2.4 GHz band.
Flashes (green)	The speaker is switching from Wi-Fi 5 GHz: OFF mode to Wi-Fi 5 GHz: ON mode.
Flashes (orange)	The speaker is switching from Wi-Fi 5 GHz: ON mode to Wi-Fi 5 GHz: OFF mode.
Flashes 3 times (white)	The software has completed updating.

Lights up	The LIVE SOUND mode is set.
Turns off	The STANDARD mode (EXTRA BASS effects and LIVE SOUND effects are off) or EXTRA BASS mode is set.

Flash (blue)
Flash (blue)	When each one of the four indicators flashes subsequently from left to right, the speaker is installing the software.
All light up (green)	The speaker is being initialized.