USB
(Front)
Dev
ice
Flow (except BDP-S280)
USB
dev
ice is not reco
g
niz
e
d
In
sert
t
h
e USB
dev
ice again.
Is
it
recogni
zed when
t
h
e power
is
turned OFF and t
h
en ON
again
?
No
Is
5V present at
CN201
(
IF-170
board
) pin1?
No
Is
5V presen
t at
CN1204
(MB
board
) Pin 5 or pin 6?
No
Is
6V present at
C601pin8
(MB
board
)?
No
Power suppl
y I
C
3
1
0
(
M
B
board
-
defective
Ye
s
Ye
s
Ye
s
Ye
s
P
o
or cont
act
of
t
h
e USB
dev
ice
Def
e
ctiv
e FFC between
t
h
e IF
board
and t
h
e MB
board
.
Does replac
ing I
C
601(MB
board
)
improv
e t
h
e sy
mptoms?
No
Repla
ce
t
h
e MB
board
Y
e
s
Replac
e t
h
e FFC bet
ween t
h
e
MB
board
and t
h
e IF board.
Do
the
s
ymp
tom
s i
m
pr
o
ve
?
No
Replac
e the MB board
.
IC
602(MB board
) def
e
ctiv
e
Y
e
s
Def
e
ctiv
e FFC between
t
h
e IF
board
and t
h
e MB
boar
d
9-15E
BDP-BX38/S280/S380/S383
