BDS 580S (serv.man2) - Harman Kardon Audio Service Manual (repair manual). Page 21

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5-9                             Trouble shooting Chart 
IPOD in does not work 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
IPOD in does not 
work 
Go 
Check the DVD mode is 
OK,audio output is ok 
 
No 
Replace the Main board
 
Check whether USB can 
work well on front USB port 
 
Yes 
Replace the USB board   
No 
Yes 
Check the I2S Switch U26
 
Check MCU U21 is 
work well
 
Replace U21
 
No 
Yes 
Check whether the 
CP IC U44 is work 
well
 
Replace U44 
No 
Yes 
Check whether the 
USB Switch U43 is 
work well
 
Yes 
Replace U43 
No 
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