Casio PX-780 Service Manual page 20

4-15. IrDA NG
Check if the inspection
tools operate normally
No
4-16. 8pin I/F NG
Check the connection
of CN13.
NG
Connector is loosely
connected.
4-17. Bluetooth NG
Check the connection
of CN2.
NG
Connector is loosely
connected.
Yes
MAIN PCB is defective.
HA-B61IO is defective.
PC setting is incorrect.
OK
Replace SIP FPC,
check again.
No
OK
MAIN PCB is defective.
OK
SIF FPC is defective.
MAIN PCB is defective.
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