Read Harman Kardon BDS 280S Service Manual online
5-3 Trouble shooting Chart
Remote control does not work
Remote control
does not work
Go
Check whether the remote
controller’s battery is
exhausted or not.
No
Replace the battery for remote
controller
Check the 24pin FFC cable
from FB to Main board is
connect well
Yes
Reconnect the cable
No
Yes
Replace IR501
Check the IR501 power
supply is OK, IR501 pin3 is
about 3.3V
Check the +3.3V net on front board
No
Yes
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