Sony BDP-BX18, Руководство по обслуживанию, Страница: 90 / 105

K
ey
1
does
not
o
per
a
te
Is the
re v
olta
ge
of a
bo
ut 3.3V at p
in
of
CN701
w
it
ho
ut
p
ressin
g
the
ke
ys?
N
o
Y
es
Check th
e potential voltage CN701
pin3 change from +3.3V to near 0V when pressing the stop button.
9-6
BDP-BX18/S185/S186
FR-316 IF board flow chart
Does
s
ympt
om
impr
ov
e
w
hen
replace
FR-316
board?
Ye
s
W
hich r
ow
of ke
ys do no
t o
pe
rate?
S
TOP
b
u
tto
n
s -
>
K
e
y1
d
o
e
s
n
o
t
o
p
e
ra
te
Ref
erence:
Relat
ions
hip
of
B
ut
tons
and V
olt
ages
O
P
E
N
/C
L
O
S
E
b
u
tt
o
n
-
>
K
e
y2
d
o
e
s
n
o
t
o
p
e
ra
te
P
LA
Y
but
ton
->
K
ey
3
does
not
operat
e
Inp
u
t
2.
90-3.
30
0.
00-0.
40
K
EY0
K
ey
_O
FF
P
O
W
E
R
K
EY1
K
ey
_O
FF
S
T
OP
K
EY2
K
ey
_O
FF
O
P
EN/CLO
SE
K
EY3
K
ey
_O
FF
P
LA
Y
R
e
c
o
n
n
e
c
t
F
F
C
,
if
s
y
m
to
m
s
donot improve, replace FFC
Does FFC disconnected
C
N
7
0
2
o
r
b
ro
k
e
n
from
Ye
s
N
o
Dis
connect
ed FFC or
FR-316
b
o
a
rd
replace
R
e
c
o
n
n
e
c
t
F
F
C
,
if
s
y
m
to
m
s
do not improve, replace FFC
Does FFC disconnected
C
N
7
0
1
o
r
b
ro
k
e
n
from
Ye
s
Check IC101, B23
Chec
k
pat
tern
and
S
701
might
be
br
ok
en
Y
es
Is the
re v
olta
ge
of a
bo
ut 3.3V at p
in
2
of
CN701
w
it
ho
ut
p
ressin
g
the
ke
ys?
Y
es
Check th
e potential voltage CN702
pin2 change from +3.3V to near 0V when pressing the stop button.
Dis
connect
ed FFC or
FR
-3
1
6
b
o
a
rd
replace
R
e
c
o
n
n
e
c
t
F
F
C
,
if
s
y
m
to
m
s
do not improve, replace FFC
Does FFC disconnected
C
N
7
0
1
o
r
b
ro
k
e
n
from
Ye
s
N
o
Chec
k
pat
tern
and
S
702
might
be
br
ok
en
Y
es
K
ey
2 does
not
o
per
a
te
Is the
re v
olta
ge
of a
bo
ut 3.3V at p
in
2
of
CN701
w
it
ho
ut
p
ressin
g
the
ke
ys?
Check IC101
Y
es
Check th
e potential voltage CN701
pin2 change from +3.3V to near 0V when pressing the stop button.
Dis
connect
ed FFC or
FR-316
b
o
a
rd
replace
R
e
c
o
n
n
e
c
t
F
F
C
,
if
s
y
m
to
m
s
do not improve, replace FFC
Does harness disconnected
C
N
7
0
1
o
r
b
ro
k
e
n
from
Ye
s
N
o
Chec
k
pat
tern
and
S
701
might
be
br
ok
en
Y
es
K
ey
0 does
not
o
per
a
te
N
o
N
o
N
o
N
o
CHECK IC101
but
ton
->
K
ey
0
does
not
operat
e
POWER
Is the
re v
olta
ge
of a
bo
ut 3.3V at p
in
2
of
CN701
w
it
ho
ut
p
ressin
g
the
ke
ys?
Y
es
Check th
e potential voltage CN702
pin2 change from +3.3V to near 0V when pressing the stop button.
Dis
connect
ed FFC or
FR-316
b
o
a
rd
replace
R
e
c
o
n
n
e
c
t
F
F
C
,
if
s
y
m
to
m
s
do not improve, replace FFC
Does harness disconnected
C
N
7
0
1
o
r
b
ro
k
e
n
from
Ye
s
N
o
Chec
k
pat
tern
and
S
703
might
be
br
ok
en
Y
es
K
ey
3 does
not
o
per
a
te
N
o
Check IC101, A23
N
o
Check IC101, A22