Harman Kardon HK BDS 270

Trouble shooting Chart
5.1/2.1 channel no audio output
Reconnect well
check the system weather is
ear mode or not, pull out the
4pin cable XS601 from FB to
AM board XP806
Replace the FB board
Yes
No
Go
Check the 10pin/4pin cable is
connect well from AM to JC
board
5.1/2.1 channel no audio
out
p
ut
Yes
Replace the AM board
No
Check +32V at XP702 on
AM board is OK
Yes
Refer to Power supply board
Check XP701 is short
to GND
No
Replace the AM board
Yes
No
harman/kardon
BDS 270 + 570 Service Manual
Page 40 of 90