Read Sony BDP-BX110 / BDP-BX310 / BDP-S1100 / BDP-S3100 Service Manual online
BDP-S1100/BX110/S3100/BX310
6-11
6-10. USB (Front) Device Flow
USB device is not recognized
Insert the USB device again.
Is it recognized when the power is
turned OFF and then ON again?
Is it recognized when the power is
turned OFF and then ON again?
No
Is 5V present at CN201
(FR-1001)
board
) pin1?
No
Is 5V present at
CN303
(MB board) Pin 10 or pin 11?
No
Is 5V present at
IC370 pin1
(MB board)?
No
Power supply IC370 (MB board -
defective
defective
Ye
s
Y
s
e
Y
Yes
s
e
Poor contact of the USB device
Defective FFC between the IF
board and the MB board.
board and the MB board.
Does replacing IC370(MB board)
improve the symptoms?
improve the symptoms?
No
Replace the MB board
Yes
Replace the FFC between the
MB board and the IF board.
Do the symptoms improve?
MB board and the IF board.
Do the symptoms improve?
No
Replace the MB board
IC370
(
.
MB board) defective
Yes
Defective FFC between the IF
board and the MB board
board and the MB board
E
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