Sony BDP-BX18, Руководство по обслуживанию, Страница: 87 / 105

9-3
Pow
er
(Sy
s
tem
)
F
low
AC
I
N
C
hec
k
t
he
out
put
v
olt
ages
f
rom
t
he
pow
er
s
upply
bloc
k
.
C
N
201
pin
1:
+12V
(U
N
SW
12V)
C
N
201
pin
2:
+12V
(U
N
SW
12V)
C
N
201
pin
3:
+12V
(F
E_U
N
SW
12V)
- -
N
o
Yes
C
hec
k
t
he
fus
es
H
av
e
any
of
t
he
below
f
us
es
blow
n?
N
o
M
B
board:
PS301,
PS302
Yes
C
hec
k
t
he
follow
ing
pow
er
c
ont
rol
s
ignals
w
hile
the
pow
er
is
ON
PC
ON
T
_C
OR
E:
M
B
board
R
327
PC
ON
T
2
:
M
B
board
R1236
PC
ON
T
3:
M
B
board
R
305,
R
307,
R
309,
R
343
AT
A_PC
ON
T
:
M
B
board
R
376
Yes
C
hec
k
t
he
v
olt
ages
bas
ed
on
the
s
c
hem
at
ic
diagram
N
o
Volt
age
lines
t
hat
are
not
out
put
are
s
hort
ed
to
GN
D
N
o
F
ailure
of
pow
er
s
upply
I
C
->
R
eplac
e
the
IC
R
eplac
e
the
M
B
board
if
t
here
is
no improvement
C
he
c
k
t
hat
t
he
harness
has
been
ins
ert
ed
properly.
I
f
there
is
no
problem
,
replac
e
the
pow
er
s
upply
bloc
k
.
R
e
pl
ac
e
blo
w
n
fu
se
s
R
e
pl
ac
e
t
h
e
MB
bo
ard
if
the
re
is
n
o
impr
o
ve
m
e
n
t
BDP-BX18/S185/S186