BDP-S2100 - Sony DVD Service Manual (repair manual). Page 62

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BDP-S2100
6-10
6-9. Wifi  fl owchart
Wireless setup fail.
Check SW5V at  Wi
Į Module
pin 4 
To power supply 
Ňow chart
Check usb haness connec
Ɵon 
is OK? 
Wi-Fi Module 
 
NG
Plug in harness properly
NO
NO
YES
YES
Repeat wireless setup
Can establish 
Wi-Fi Connec
Ɵon?
Change MB board
NO
END
START
YES
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?
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
     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.
Does replacing IC370(MB board) 
improve the symptoms?
No
Replace the MB board
 Yes
Replace the FFC between the
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
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