Sony RMT-B119A - Remote Control Troubleshooting

9-7
BDP-BX39/S390
Remote control does not operate
Check of +3.3V voltage at IC710 pin1?
No
(MB board)
No
To Power supply flow chart
Yes
No
Check FFC disconnected from CN701 or broken?
Yes
Check of appearance waveform during
pressing remote control at IC710 pin2
No
Yes
Check of +3.3V voltage at CN1002 pin 3? Check of +3.3V voltage at CN701 pin 2?
No
Replace FFC If symptoms do not improve,
Change FR board
Check of appearance waveform during
pressing remote control at CN1002 pin3 (MB board)
Yes
Yes
Change FR Board
No
Check of appearance waveform during pressing remote control at CN701 pin3
No
Replace IC710
If symptoms do not improve,
Change FR board
Check pattern along SIRCS line
If symptom do not improve, Change FR board
Check FFC disconnected from CN701 or broken?
No
Reconnect
FFC
If symptoms do not improve, Change FFC
Yes
Yes
Change FR Board
Yes
Check pattern around IC710
If symptom do not improve, Change FR board
CHECK IC101