BDS 580S (serv.man2) - Harman Kardon Audio Service Manual (repair manual). Page 20

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5-8                             Trouble shooting Chart 
AUX in does not work 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AUX in does not 
work 
Go 
Check the DVD mode is 
OK,audio output is ok 
 
No 
Replace the Main board
 
Check the Main board 
U203 AK5367 PIN2,PIN3, 
PIN6,PIN7 L/R signal input 
Yes 
Check the main board R221—R224 
and C284,C286,C288,C290 
No 
Yes 
Replace U203  AK5367
 
Check U203 
AK5367 is broken. 
 
Check the U28 
 
 
No 
Yes 
Check the U203 
AK5367 
PIN30,VDD+5V, 
 
Check the main board U203 
power supply circuit 
No 
Yes 
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