AURA STUDIO - Harman Kardon Audio Service Manual (repair manual). Page 9

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  Trouble shooting Chart 
5-3
 
 
BT cannot work 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
BT can not work 
Go 
No 
Replace the antenna
 
Check the connection fo BT antenna   
Replace the BT module   
Check the power supply of the BT(3.3V) 
Replace the U2 
Yes 
No 
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