BDP-S2200 - Sony DVD Service Manual (repair manual). Page 38

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6-6
BDP-S2200
6-5. FR-1303 Board fl owchart
Does symptom improve when replace 
FR-1303 
 board?
Yes
Which row of keys do not operate?
Reference: Relationship of Buttons and Voltages
OPEN/CLOSE button ->
Key3 does not operate
Input
2.90-3.30
0.00-0.40
KEY0
(S700)
(S703)
Key_OFF
OPEN/CLOSE
KEY3
Key_OFF
Reconnect FFC, if symtoms
donot improve, 
FFC 
NG
Does  FFC disconnected
CN701
or broken
 from 
Yes
No
Is there voltage of about 3.3V at pin
6
of
CN701
 without pressing the keys?
Yes
Check the potential voltage CN701
pin6 change from +3.3V to near 0V
when pressing the stop button.
FR-1303 
board 
NG
Reconnect FFC, if symtoms
do not improve, replace
FFC
Does harness disconnected
CN701
or broken
 from 
Yes
No
No
  Yes
Key0  does not operate
No
No
No
Replace MB board
 button -> 
Key0 does not operate
POWER
Is there voltage of about 3.3V at pin
5
of
CN701
without pressing the keys?
Yes
Check the potential voltage CN701
pin5 change from +3.3V to near 0V
when pressing the stop button.
Reconnect FFC, if symtoms
do not improve, 
FFC 
NG
Does harness disconnected
CN701
or broken
 from 
Yes
No
        Yes
Key3  does not operate
No
POWER
Replace MB board
Replace MB board
FR-1303 
board 
NG
Replace MB board
Replace MB board
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