Harman Kardon BDS 270 Service Manual ▷ View online
Trouble shooting Chart
COAX/OPTICAL does not work
COAX/OPTICAL
does not work
does not work
Go
Check the D VD mode is
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.
Check the U202 74LV541
No
Yes
Check
U714
PIN3,PIN22 +3.3V
Yes
Check
the
main boar
d
U714power supply circuit
No
harman/kardon
BDS 270 + 570 Service Manual
Page 45 of 90
Trouble shooting Chart
Fan can not rotate
Ihdmi input does not output
Ihdmi input does not output
FAN can not rotate
Check the voltage
of FAN
Go
Check the F AN
power supply circuit
No
OK
Replace a new fan
HDMI input does
not output
not output
Go
Check the D VD mode is
OK,HDMI output is ok
OK,HDMI output is ok
No
Replace the MA board
Yes
Replace U4 ADV7622
check connector is HDMI IN OUT
IN 1，AND SET HDMI INOUT IN 1
INPUT,
IN 1，AND SET HDMI INOUT IN 1
INPUT,
Correct connection
No
OK
OK
harman/kardon
BDS 270 + 570 Service Manual
Page 46 of 90
Trouble shooting Chart
Line out does not output
Line out does
not output
not output
Go
Check the D VD mode is
OK,audio output is ok
OK,audio output is ok
No
Replace the AM board
Yes
Replace P4 RCA
check BDSX70 is
working
Yes
harman/kardon
BDS 270 + 570 Service Manual
Page 47 of 90
harman/kardon
BDS 270 + 570 Service Manual
Page 48 of 90
PLEASE NOTE THAT TOP COVER ASSEMBLY INCLUDES 29,30 AND 1, ASSEMBLED TO ONE.
TOP COVER ASSY, BLACK, FOR BDS 270+570: 08-BDSXT1-001.
TOP COVER ASSY, WHITE, FOR BDS 270+570: 08-BDSXT1-004.
TOP COVER ASSY, BLACK, FOR BDS 270+570: 08-BDSXT1-001.
TOP COVER ASSY, WHITE, FOR BDS 270+570: 08-BDSXT1-004.
Click on the first or last page to see other BDS 270 service manuals if exist.