Harman Kardon HK BDS 270

Trouble shooting Chart
IPOD in does not work
IPOD in does not
work
Go
Check the D VD mode is
OK,audio output is ok
No
Replace the AM board
Check whether bad so lder
exists on pins of BRIDGE
Ⅲ connector
Yes
Correct connection
No
Yes
Check the U18 AK5367 and
U202 7 4LV541
Check U719,U720
input and output
signal is ok
Replace U719, U720
No
Yes
Check whether the
remote can c ontrol
the IPOD unit
Replace U721 or re place the
AM board
No
Yes
Check whether the
remote can c ontrol
the IPOD unit
Yes
Check the IPOD po wer supply
IC U723 LM7808
No
harman/kardon
BDS 270 + 570 Service Manual
Page 44 of 90