Harman Kardon HK BDS 270

Trouble shooting Chart
AUX in does not work
AUX in does not
work
Go
Check the D VD mode is
OK,audio output is ok
No
Replace the AM board
Check the AM board U 18
AK5367 PIN2,PIN3,
PIN4,PIN5 L/R signal input
Yes
Check the main board
R301,R302,R303,R304
No
Yes
Replace U18 AK5367
Check U18 AK5367
is broken.
Check the U202 74LV541
No
Yes
check the U18
AK5367
PIN30,VDD+5V,
Check the main board U18
power supply circuit
No
Yes
harman/kardon
BDS 270 + 570 Service Manual
Page 43 of 90