B100

· Check the power adapter. Only connect the power adapter to a power outlet, not to the unit. If the LED on the adapter blinks or does not light up, the adapter is defective.

· Check the power connection.

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· The device did not power on. Check LED and the power connection.

· Check that the proper input source is selected in the rear panel.

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· Check the connections for all devices.

· Insert connection cables all the way in.

· Check the volume of all devices.

· One channel’s positive output and negative output mayb be reversed, please check and correct it.

· The cables may not be connected correctly, check and reconnect them.

· Probably overloaded. Try turning down the volume of the source or turning down the gain on the B100.

· Check to see if the problem is with the source, downstream equipment and cables.

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The indicator blinks A times, after an interval of 1 second, it blinks B times, and after 2 seconds, it blinks again in a cycle. Please determine the A and B values based on the B100 flashing light and find the appropriate treatment below.

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A = 2, B = 2 or A = 2, B = 3

Firmware is abnormal. Unplug the power cable and plug in the USB-C to the FW port on the rear panel to re-upgrade.

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A = 1, B = 1 or A = 1, B = 2

Negative and positive voltage abnormal

· Check the power adapter. Only connect the power adapter to a power outlet, not to the unit. If the LED on the adapter blinks or does not light up, the adapter is   defective.

· Check the power connection.

· If the problem still persists after disconnecting the other devices and restarting it, the unit may be defective. Please contact the store where you purchased it.

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A = 1，B = 3

Amplifier circuit outputs abnormal DC voltage

· After changing the song, turning down the source volume and turning down the gain of the unit, unplug and re-plug the power cable and reboot the unit.

· If the problem still persists after disconnecting the other devices and restarting it, the unit may be defective. Please contact the store where you purchased it.

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A = 1，B = 4

The protection circuit has been activated due to a rise in temperature within this unit. Reboot B100 after the unit cools down. Please put the unit in a place having good ventilation.

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A = 1，B = 5

Too low load impedance or short-circuit load

· Check if the output is short-circuited, the load impedance is too low or the load is short-circuited.

· After changing the song, turning down the source volume and turning down the gain of the unit, unplug and re-plug the power cable and reboot the unit.

· Check if the speaker cables are connected in place. (Note: when connecting the speaker cables, there can be no bare leakage of copper wire touching the metal   enclosure.)

· Check if you have followed the connections as per our instructions in user manual.

· Check if the speaker cables are defective, try with other cables.

· Check if the speakers are defective.

· If the problem still persists after disconnecting the other devices and restarting it, the unit may be defective. Please contact the store where you purchased it.

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For firmware upgrade only.