nized
Insert he USB device again.
Is it recognized when the power is
turned OFF and then ON again?
No
Is 5V present at CN201(IF-170
board) pin1?
No
Is 5V present at
IC601
(MB board) Pin 5 ?
No
Is 6V present at C601pin8
(MB board)?
No
Power supply IC310 (MB board -
defective
Yes Yes Yes Yes
Poor contact of he USB device
Defective FFC between the IF
board and the MB board.
Does replacing IC601(MB board)
improve the symptoms?
No Replace the MB board
Yes
Replace he FFC between th
e
MB boar
d and he IF board.
Do the symptoms improve?
No Replace he MB board. IC602(MB board) defective
Yes
Defective FFC between the IF
board and the MB board
9-16E
BDP-BX58/S480/S483/S580