US Blaster USB 3001 Owner's Manual page 5

USB 3001 - 3002 - 3003
Class-D Power amplifiers
16. Run Indicator
This LED will light up when amplifier work properly, it will flash or shut down when the amplifier is in
self-testing or malfunctions.
17. Alarm Indicator
When this LED light up, the amplifier may in self-test mode (when power up)or malfuction.
Shut down the amplifier immediately can find the reason before power up
amplifier again.
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