Harman Kardon BDS 280S - Troubleshooting Flowcharts

5-1 Trouble shooting Chart
Power on led doesn't work
Power on led doesn't
work
GO
Switch performance
check
OK
Check the cable XP504 is
connect well to Main board
XP6
Change switch
NG
Reconnect the cable
NG
Refer to Power supply board part
NG
Check+5V,+12V,VCC_D
voltage on the power and
Main board
OK
OK
Replace the LED25---LED31
Check the power on led
control circuit is OK
Replace the FB
NG
OK