FR
Board
flo
wchart
W
hit
e LE
D
does
not
lig
ht
Is
there
vo
lta
ge
of
about
5.8V
at
PS701?
No
Ye
s
Is
there
vo
lta
ge
of
about
3.3V
at
Base
Q7
09
?
No
Ye
s
Ch
ec
k c
on
ne
cti
on
of
FL
D
an
d I
C7
02
.
Replace
IC702
if
OK.
If no
de
fect
, replace
the
FR
board
Is
Pin
3
of
CN
70
2 a
t 6
V?
No
Ye
s
Is
the
potentia
l o
f R730
is
6V?
No
Ye
s
Sy
mptom
impro
ve
w
hen
replace
PS701
No
Ye
s
Is
Pin
6
of
CN702
at
3.3V?
No
Ye
s
Is
the
potentia
l o
f R718
is
3.
3V?
No
Ye
s
Re
pla
ce
R
71
8
Sy
mptom
impro
ve
w
hen
replac
ing
FFC?
No
Sy
mptom
impro
ve
w
hen
replac
ing
FR
Board?
No
Replace
FR
Board.
Sy
mptom
impro
ve
w
hen
replac
ing
FFC
No
Sy
mptom
impro
ve
w
hen
replac
ing
FR
Board?
No
Replace
M
B
Board.
Chec
k pattern
near
IC1503
of
M
B
Board.
Replace
IC1503
or
M
B
Board
if
NG.
Replace
M
B
Board.
Replace
IC702.
If
no
ef
fect
, replace
the
FR
board.
9-11
BDP-BX37/S270/S370/S373/S470
