Remote Does Not Operate - Sony BDP-S485 Service Manual

Remote control does not operate
Check of +3.3V voltage at IC701 pin1?
Yes
Check of appearance waveform during
pressing remote control at IC701 pin2
Yes
Check of appearance waveform during
pressing remote control at CN1204
pin5(MB board)
Yes
To IFcon section flowchart
No
Check of +3.3V voltage at CN1204 pin11?
(MB board)
Yes
Check of +3.3V voltage at CN702 pin11?
Yes
Check pattern around IC701
If symptom do not improve,
Change FR board
No
Replace IC701
If symptoms do not improve,
Change FR board
Check of appearance wavefoam
No
during pressing remote control
at CN702 pin5
Yes
Check pattern along SIRCS line
If symptom do not improve,
Change FR board
No
To Power supply flow chart
No
Check FFC disconnected from
CN702 or broken?
Yes
Replace FFC
If symptoms do not improve,
Change FR board
No
Check FFC disconnected from
CN702 or broken?
Yes
FFC
Reconnect
If symptoms do not improve,
Change FFC
No
Change FR Board
No
Change FR Board