1001 Board Fl Owchart - Sony BDP-S1100 Service Manual

6-5. FR-1001 Board fl owchart
No
Does symptom improve when replace
FR-1001 board?
Yes
Which row of keys do not operate?
STOP buttons -> Key1 does not operate
Key3 does not operate
OPEN/CLOSE button ->
PLAY button -> Key2 does not operate
POWER button -> Key0 does not operate
Reference: Relationship of Buttons and Voltages
Input KEY0 KEY1 KEY2
(S700) (S701) (S702)
2.90-3.30 Key_OFF Key_OFF Key_OFF
POWER PLAY
0.00-0.40
STOP
Key0 does not operate
Is there voltage of about 3.3V at pin 8 No
of CN701 without pressing the keys?
Yes
Check the potential voltage CN701
No
pin8 change from +3.3V to near 0V
when pressing the stop button.
Yes
Pattern and S700 might be broken
No
Does FFC disconnected
from
CN701 or broken
Yes
Reconnect FFC, if symtoms
donot improve,
FFC NG
KEY3
(S703)
Key_OFF
OPEN/CLOSE
No
Does harness disconnected
Check IC101 (P188)
from
CN701 or broken
Yes
Reconnect FFC, if symtoms
do not improve, replace
FFC
FR-1001 board NG
Key1 does not operate
CHECK IC101
Is there voltage of about 3.3V at pin
of CN701 without pressing the keys?
Yes
Check the potential voltage CN701
pin 7 change from +3.3V to near 0V
when pressing the stop button.
Yes
Pattern and S701 might be broken
Key2 does not operate
Is there voltage of about 3.3V at pin
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.
Yes
Pattern and S702 might be broken
Key3 does not operate
Is there voltage of about 3.3V at pin
of CN701 without pressing the keys?
Yes
Check the potential voltage CN701
pin4 change from +3.3V to near 0V
when pressing the stop button.
Yes
Pattern and S703 might be broken
6-6
BDP-S1100/BX110/S3100/BX310
7 No No
Does FFC disconnected
from
CN701 or broken
Yes
Reconnect FFC, if symtoms
do not improve,
FFC NG
No
FR-1001 board NG
5 No
No
Does FFC disconnected
from
CN701 or broken
Yes
Reconnect FFC, if symtoms
do not improve,
FFC NG
No
FR-1001 board NG
4 No
Does harness disconnected No
from
CN701 or broken
Yes
Reconnect FFC, if symtoms
do not improve,
FFC NG
No
FR-1001 board NG
Check IC101,
P190
Check IC101,
P191
Check IC101,
P189