Harman Kardon HK BDS 270

Trouble shooting Chart
Tuner FM does not work
Tuner FM does not work
Go
Check the DVD mode is
OK,audio output is ok
Yes
Check Tuner module
pin5 supply voltage is
+3.3V
Replace the AM board
No
Check AM boa rd tuner volt age supply
circuit.
No
Change the Tuner module
No
Check Tuner module
pin6,pin7,pin8,I2S output
Yes
Yes
Check the U202
74LV541 PIN20
VDD+3.3V,
No
Yes
Replace U202 74LV541
Check the m ain board U202
power supply circuit
harman/kardon
BDS 270 + 570 Service Manual
Page 42 of 90