Harman Kardon BDS 2 (serv.man8) Service Manual ▷ View online
5-7 Trouble shooting Chart
Tuner FM does not work
Tuner FM does not work
Go
Check the DVD mode is
OK,audio output is ok
OK,audio output is ok
Yes
Check Tuner module
pin5 supply voltage is
+3.3V
pin5 supply voltage is
+3.3V
Replace the AM board
No
Check AM board tuner voltage supply
circuit.
No
Change the Tuner module
No
Check Tuner module
pin6,pin7,pin8,I2S output
pin6,pin7,pin8,I2S output
Yes
Yes
Check the U202
74LV541 PIN20
VDD+3.3V,
VDD+3.3V,
No
Yes
Replace U202 74LV541
Check the main board U202
power supply circuit
Harman Kardon
BDS 2 / BDS 5 Service Manual
Page 17 of 66
5-8 Trouble shooting Chart
AUX
IN does not work
AUX in does not
work
Go
Check the DVD mode is
OK,audio output is ok
OK,audio output is ok
No
Replace the AM board
Check the AM board U18
AK5367 PIN2,PIN3,
PIN4,PIN5 L/R signal input
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.
is broken.
Check the U202 74LV541
No
Yes
check the U18
AK5367
PIN30,VDD+5V,
AK5367
PIN30,VDD+5V,
Check the main board U18
power supply circuit
No
Yes
Harman Kardon
BDS 2 / BDS 5 Service Manual
Page 18 of 66
5-9 Trouble shooting Chart
IPOD
IN does not work
IPOD in does not
work
work
Go
Check the DVD mode is
OK,audio output is ok
OK,audio output is ok
No
Replace the AM board
Check whether bad solder
exists on pins of BRIDGE
ċ connector
exists on pins of BRIDGE
ċ connector
Yes
Correct connection
No
Yes
Check the U18 AK5367 and
U202 74LV541
U202 74LV541
Check U719,U720
input and output
signal is ok
input and output
signal is ok
Replace U719, U720
No
Yes
Check whether the
remote can control
the IPOD unit
remote can control
the IPOD unit
Replace U721 or replace the
AM board
No
Yes
Check whether the
remote can control
the IPOD unit
remote can control
the IPOD unit
Yes
Check the IPOD power supply
IC U723 LM7808
No
Harman Kardon
BDS 2 / BDS 5 Service Manual
Page 19 of 66
5-10 Trouble shooting Chart
COAX/OPTICAL does not work
COAX/OPTICAL
does not work
does not work
Go
Check the DVD mode is
OK,audio output is ok
OK,audio output is ok
No
Replace the AM board
Check the coax/optical
RCA connector is ok
Yes
Replace the RCA connector
No
Yes
Replace U714 CS8422
Check U714
CS8422 is broken.
CS8422 is broken.
Check the U202 74LV541
No
Yes
Check U714
PIN3,PIN22 +3.3V
PIN3,PIN22 +3.3V
Yes
Check the main board
U714power supply circuit
No
Harman Kardon
BDS 2 / BDS 5 Service Manual
Page 20 of 66
Click on the first or last page to see other BDS 2 (serv.man8) service manuals if exist.