Sony BDP-S485 Service Manual ▷ View online
IF
co
n
Secti
o
n
F
lo
w
Ch
art(2/
2)
C
he
c
k o
f
IF
c
on
res
e
t
in
p
u
t
p
or
t
Is
t
h
e v
ol
tage of
IC
1
2
0
3
"H"(3.3V
)?
No
Is
there
a pro
b
le
m w
ith
th
e
mo
u
n
tin
g
c
o
n
d
itio
n
o
f
R121
2
,
C122
1
or R1208
?
Ye
s
Yes
P
c
o
n
t ou
tput port
c
h
ec
k
Check
of
each pow
e
r suppl
y cont
rol
port
wh
e
n
t
h
e
p
o
we
r i
s
ON
* Correspond
ing
ou
tput
IC120
3
pi
n15 PCO
N
T1
IC
1203 pi
n 17PCO
NT
2
IC12
03 pi
n
2
1
P
CO
NT
3
IC12
0
3
p
in
2
3
P
C
ON
T
_
C
O
R
E
IC1203
pi
n
2
4 AT
A
_PCONT1
S
W3
.3V
a
nd SAT
A
_
1.
2VA
out
p
ut
CO
RE
_
1
.1V ou
tput
DDR2_
1
.8
V
s
ys
tem
o
u
tp
u
t
DCSW
5V
FE
_
SW
5V
N
o
C
h
e
c
k
fo
r
sh
o
rt
s
at ea
c
h por
t
N
o
A
ll
th
e
ports g
o
"
H
"
wi
th
in 2
to
1
0
ms
, b
u
t
soon go
"L
"
N
o
Do t
h
e
s
ym
pt
oms
improv
e
a
ft
er checki
n
g
th
e
s
ol
d
e
rin
g
and
pat
tern
of
IC
1
2
0
3
?
No
Pow
e
r sup
p
ly
out
p
u
t c
he
c
k
Ch
e
ck t
h
e out
p
u
t o
f th
e
corr
e
s
p
o
n
di
ng
vo
lta
g
e
SW3.
3V
Sh
or
t circ
u
it
o
p
erati
o
n
ch
eck
No
To
P
ow
er Supp
ly (
S
ys
te
m
) f
lo
w
ch
art
N
o
Wh
e
n
IC120
3
p
in
15
PC
O
NT
1
h
as gone
"
H",
is
t
h
e SW
3.
3V v
ol
tage o
u
tp
u
t?
Ye
s
Rep
lace
IC
1
2
0
3
or repl
ace t
h
e M
B
board
Y
e
s
Ch
eck SY
S
_
R
S
T s
ig
na
l o
ut
put
Is
IC
1
2
0
3
p
in
5
1
"H"(3.3V)?
T
he m
o
un
ting condi
tion
o
f
R
1156
are OK?
N
o
Rep
la
ce
IC
1
2
0
3
a
nd the M
B
boa
rd
Ye
s
Ch
eck
the
c
om
m
u
ni
ca
ti
on
w
ith the h
o
s
t
C
P
U
(SY
S
CO
N_
R
EQ
si
gnal
ch
e
ck
)
Do cy
cl
ical
"H"
an
d
"L
" commu
n
ica
tio
n
wa
v
e
fo
rms
com
e
to
IC
1
2
03 pi
n
3
0
?
N
o
Is
t
he
re a
prob
lem
w
ith
t
he
m
o
u
n
ting
c
o
n
d
ito
n
o
f
R12
62
?
No
D
o
t
he
sy
m
pt
oms
improv
e
af
te
r
repl
a
ci
n
g
IC
1
0
1
?
No
Ye
s
Ch
eck th
e
c
om
m
u
nic
a
tion w
ith the
h
o
s
t
CPU
(Seri
al
co
m
mu
n
ic
a
tion
si
g
n
al
c
h
e
c
k
)
Do c
ycl
ic
a
l "H"
an
d
"L
" com
m
uni
c
at
io
n
w
a
ve
fo
rms
come
to
IC
1
2
03 pi
n4
7
,
p
in
48
and pi
n
49?
N
o
Is
t
h
e
re
a pr
o
bl
em w
ith t
h
e mount
ing
c
o
ndi
ton o
f
RB1
2
40,
R12
4
3
a
nd
R124
6
N
o
Repl
ac
e
IC
12
0
3
or
re
p
lac
e t
he
M
B
board
Is
the v
o
ltage
a
t
th
e
"H
"
le
v
el
(3.
3
V)?
SW3.3V and SW5V
1.
2VA and
COR
E
_
1.1V
DAC3.3V, 3
.3V
A
DCDC6V, DCDC4V
FE_
SW
12V nad FE_SW5V
A
B
9-5
IC1203 pi
n2
AT
A_
P
CONT2
Ye
s
Ye
s
Ye
s
Ye
s
Replace IC1203 or replace MB board
BDP-S485
9-6
Audi
o secti
on fl
ow
chart
Audi
o does not sound ri
gh
t
N
o
Vi
deo
is
ou
tp
ut
properl
y
No
To Vi
deo secti
on fl
ow
chart
Y
es
Is the F
L di
spl
ay/LED d
ispl
ay c
or
rec
t?
No
To M
ai
n f
low
char
t
Y
es
Is t
he
dri
ve opera
tin
g prop
er
ly
?
No
To D
ri
ve
fl
ow
ch
ar
t
Yes
Is
ea
ch pow
er
suppl
y supp
lie
d t
o t
he A
U
DIO
B
lock?
N
o
To
P
ow
er Suppl
y (
S
ystem
) fl
ow
chart
I
C
305 pi
n4
: DAC 3.3V
Yes
On
ly
A
na
log 2c
h L/R A
ud
io
a
ffec
ted?
N
o
O
nl
y D
igi
tal
Audi
o (
HD
MI
, Coa
x)
affected?
No
Repl
ace the M
B
board
Yes
Yes
Is t
her
e HDM
I out
put
?
No
R
ep
lace t
he M
B
boar
d
Is
ther
e Co
ax
ia
l out
pu
t?
No
Is there audi
o system
di
gi
tal
si
gnal
in
put t
o
IC903?
IC903 pi
n1: AO
M
C
LK
IC903
pi
n10:
A
OB
CK
No
R
ep
la
ce t
he M
B board
Yes
Ar
e c
ontr
ol
s
ig
na
ls
in
pu
t t
o I
C90
7?
IC903 pin7: MUTE
N
o
Repl
ace the M
B
boar
d
Yes
Is there a pro
ble
m
w
ith
m
ount condi
tio
n of
C932
No
R
ep
la
ce IC903 or rep
lac
e M
B
board
Check output resistor/capasitors
(R922,R903,C918,C946)
BDP-S485
No
R
ep
lace the M
B
boar
d
9-7
Vi
deo
s
ec
ti
on
flo
wc
h
a
rt
R
e
p
ro
d
u
c
ed
v
ideo
do
e
s
no
t a
p
p
ear
ri
gh
t
Ye
s
Is t
h
e
FL
di
s
p
la
y/L
E
D d
is
p
la
y
c
o
rre
ct?
N
o
To M
a
in
f
low
cha
rt
Ye
s
Is
the drive o
p
erating pro
p
erly?
N
o
To
Dri
v
e
fl
ow
c
ha
rt
Y
es
C
he
ck
the i
n
put
po
w
er
No
IC1
0
03
p
in
1
3
:+
5V
Yes
Ar
e v
ideo
si
g
nal
s
i
n
p
ut t
o
IC
1
0
0
3
No
C
h
e
ck t
h
e
w
ri
tti
ng f
rom
I
C
101
Pi
n1
CV
B
S
si
g
na
l
P
in3
Y
s
ignal
Ye
s
A
re c
on
tro
l sig
n
a
ls
in
pu
t to I
C
1
003
?
No
Ch
e
ck
the w
rit
ti
n
g
fr
o
m
I
C1
0
1
IC
1003 pi
n6 and pin7(MU
TE1 & MUTE2)
( +3
.3V)
Y
e
s
Is a
video
sig
n
a
l outpu
t f
rom
IC
1
0
0
3
?
No
Re
p
la
c
e
IC
1
0
03
Y
e
s
Is
a
s
ig
n
a
l
outpu
t
fro
m e
a
c
h
V
id
e
o
outp
ut
c
o
nnec
to
r?
N
o
C
he
ck o
ut
pu
t
res
ist
or
s
(
R103
1
,R10
3
0
,R10
2
9,R1032,R1033,R1034,R1035
and
R1
0
28,R1043,R1044,R1045,R1046)
C
he
ck t
h
e
p
in
j
a
ck
b
lo
ck
To
P
o
we
r (
S
yst
e
m)
fl
o
wc
h
a
rt
P
in
14 CV
B
S
s
ig
n
a
l
P
in
1
2 Y
s
ignal
BDP-S485
FL-204 Board flow
ch
a
rt
Pow
e
r button o
n
the main
unit do
es
not w
o
rk
Key
1
does not o
p
erate
Does
sy
mpt
o
m
imp
ro
v
e
when replacing
FL-
2
0
4
board?
No
T
o
IF
con section
Is there v
oltage of about 3.3V at pin
3
o
f
CN702
wi
th
out
p
ressin
g
the ke
ys?
No
To
I
F
c
o
n
s
e
ction
Ye
s
Yes
CN3
3
1
pin 1
to ne
ar 0V
wh
en p
ressing
the
pow
e
r button
N
o
Che
ck pa
tt
ern
and
S
331
Check the potential voltage CN702
pin3 change from +3.3V to near 0V
when pressing the stop button.
Ye
s
IF-172 IF board flow chart
Does sy
mp
tom
imp
ro
v
e
w
hen
replace
IF-
1
7
2
board?
Yes
W
hich
row
of ke
ys do not
op
er
ate?
STO
P
b
ut
to
ns
-
>
Key
1
d
oe
s
no
t oper
a
te
Ref
erence
: Relation
shi
p of B
u
tt
on
s and
V
ol
tages
OPEN/C
L
OSE bu
tton
->
Ke
y2 do
e
s
n
o
t
o
p
er
a
te
P
LA
Y
bu
tton ->
K
ey
3
doe
s not operat
e
Inp
u
t
2.90-3.30
0.00-0.40
K
EY0
K
ey_OFF
P
O
WER
KE
Y
1
Ke
y_
O
FF
STOP
KE
Y
2
Ke
y_OFF
O
P
EN/CL
O
SE
KE
Y
3
Ke
y_
O
FF
PL
A
Y
9-8
Disconnected harness or
FL
-20
3
boa
rd
replace
change fr
o
m 3.3V
migh
t be
b
roken
fl
o
w
chart
R
e
co
n
nec
t
har
ne
s
s
, if symtoms
do not improve, replace
harness
Does harness disconnected
C
N
3
31
o
r b
roken
from
Yes
No
No
T
o I
F
co
n sec
tion
fl
ow
c
h
art
R
e
co
nne
c
t
F
F
C,
if
symptoms
donot improve, replace
FFC
Does FFC disconnected
CN702
or broken
from
Ye
s
No
flow
chart
Dis
connect
ed FFC or
IF-172
board
replace
Reco
nnect FFC, if symtoms
do not improve, replace
FFC
Does FFC disconnected
CN702
or broken
from
Yes
Check pattern and S703
might be broken
Yes
Is there v
oltage of about 3.3V at pin
2
of
CN702
wi
th
o
u
t
p
ressin
g
the ke
ys?
T
o
IF
con section
Yes
Check the potential voltage CN702
pin2 change from +3.3V to near 0V
when pressing the stop button.
flow
chart
Dis
connec
ted FFC or
IF172
board
replace
Reconnect FFC, if symtoms
do not improve, replace
FFC
Does FFC disconnected
CN
70
2
o
r
b
ro
ken
from
Yes
No
Check pattern and S702
might be broken
Yes
Key
2 does not o
p
e
rate
Is there v
oltage of about 3.3V at pin
1
of
CN702
wi
th
o
ut
p
ressin
g
the ke
ys?
T
o
IF
con section
Yes
Check the potential voltage CN702
pin1 change from +3.3V to near 0V
when pressing the stop button.
flow
chart
Di
sconnected FFC or
IF -172
board
replace
Re
c
o
n
nect FFC,
if sym
toms
do not improve, replace
FFC
Does harness disconnected
C
N
7
02
o
r
b
roke
n
from
Yes
No
Check pattern and S
701
migh
t be broken
Yes
Key
3
does not operate
N
o
No
No
BDP-S485
No
No
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