Check
Is the potential of pin 3 of Q709 5.8V?
No
Check the 5.8V line of the FR board.
Yes
Is the potential of the base of Q709
around 5V?
Yes
Is the collector voltage of Q708 about
0V?
No
Is the voltage of the base of Q708 at
3.3V?
No
Is pin 6 of CN701 at 3.3V?
No
Replace FFC, and Check pattaern
near IC1403 of MB board. Replace
IC1403 or MB board if NG.
To Drive flowchart
BU Adjustment Flow [yy] ~ After
BU/MB Replacement ~
No Yes Yes Yes
Replace Q709 Replace Q709 Replace Q708 Replace the FR board
Remote control does not operate
Symptom improve when replacing FR
board?
No
Are there signals to pin 17 of MB
board CN1404?
No
Replace FFC
Yes Yes
Are there signals to IC1403 pin 24?
No
Check MB pattern near IC1403
Yes
To IFcon section flowchart
Is there output of about 3.3V for
potential of CN701 pin 17?
No
Replace IC701 and check FR board
pattern
Yes
Disconnected flexible harness
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