Sony BDP-S790 Service Manual ▷ View online
9-5
BDP-S790
FR-317 IF board flow chart
Does symptom improve when replace
FR-317
board?
Reconnect FFC, if symtoms
donot improve, replace
FFC
donot improve, replace
FFC
Does FFC disconnected
CN702
or broken
from
Yes
No
Is there voltage of about 3.3V at pin
5,6
of
CN201
without pressin
g
the ke
y
s?
Check IC1302 (MB board)
Yes
Check the potential voltage CN201
pin5,6 change from +3.3V to near 0V
when pressing the power button.
pin5,6 change from +3.3V to near 0V
when pressing the power button.
Disconnected FFC or
TS-160
board
replace
Reconnect FFC, if symtoms
do not improve, replace
FFC
do not improve, replace
FFC
Does harness disconnected
CN201
or broken
from
Yes
No
Check pattern and IC201 might be broken
Yes
POWER does not operate
No
No
No
CHECK IC1302(MB board)
TS-160 board
Video section flowchart
Reproduced video does not appear right
Is the FL display/LED display correct?
No
To Main flowchart
Is the drive operating properly?
No
To Drive flowchart
Check the input power
No
IC101 pin V22 & T27 : 3.3V
Is a video signal output from
IC101
?
No
Check the writing from IC101
To Power (System) flowchart
Pin U27 : VDACX_OUT
Yes
Yes
Yes
Yes
9-6
BDP-S790
No
No
No
No
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
Yes
No
Yes
No
Yes
No
Yes
TS-161 Board Flowchart
No
Yes
Yes
9-7
BDP-S790
Rem
ote control does not o
perate
Check of +3.3V voltage at IC701 pin1?
No
(M
B board)
No
To Power supply flow chart
Y
es
No
Check
FFC disconnected from
CN702 or broken?
Y
es
Check of appearance waveform during
pressing remote control at IC701 pin2
No
Y
es
Check of +3.3V voltage at CN1305 pin 2?
Check of +3.3V voltage at CN702 pin 2?
No
Replace FFC
If symptoms do not improve,
Change FR board
Check of appearance waveform during
pressing remote control at CN1305
pin1 (MB board)
Y
es
Y
es
Change FR Board
No
Check
of appearance waveform
during pressing remote control
at CN702 pin1
No
Replace IC701
If symptoms do not improve,
Change FR board
Check pattern along SIRCS line
If symptom do not improve,
Change FR board
Check
FFC disconnected from
CN702 or broken?
No
Reconnect
FFC
If symptoms do not improve,
Change FFC
Y
es
Y
es
Change FR Board
Y
es
Check pattern around IC701
If symptom do not improve,
Change FR board
CHECK IC1302 (MB board)
9-8
Opti
cal
Bl
ock Uni
t (
B
U) I
O
P check fl
ow
(z
z)
~
[B
ef
ore BU Rep
lace
m
]t
n
e
m
m
e
c
al
p
e
R
B
M/
B
M/
U
B
r
et
f
A[
~
~
)
y
y(
w
w
ol
F
et
et
i
r
W
at
W
at
a
D
P
O
P
O
)
U
B(
ti
n
U
k
k
c
ol
B
l
a
ci
t
p
O
O
]t
n
e
BD
P-S790
ca
n
p
la
y
th
e
BD-d
is
c
BLX-104
lay
t
h
e
DVD
/CD-d
is
c
Ch
ec
k
Dri
v
e Pow
e
r
Su
pp
ly
Ch
ec
k
PS3
0
1
, PS3
0
2
Repl
ac
e P
S
w
h
e
n
open
Ch
e
c
k
/
r
eplac
e t
h
e F
F
C c
able,
t
h
en
c
h
ec
k
BD
P-
S790
oper
at
es
n
or
m
all
y
OPT-007
F
F
C
c
a
ble
(1
-83
9
-58
5
-1
1)
SPD-007
FF
C
c
able (
1
-8
3
9
-5
82-
1
1
)
C
h
e
c
k th
e
Op
ti
ca
l
Bl
o
c
k U
n
it
(BU
)
b
y
s
e
rvi
c
e
m
o
d
e
.
(Fl
o
w
c
h
a
rt
z
z
)
BU
IOP
is OK?
Repl
ac
e t
h
e O
p
tic
a
lB
lo
c
k
U
n
it
(BU
)
Op
ti
ca
l Bl
o
c
k
U
n
it
(BU
)
re
p
la
c
e
(F
lo
wc
ha
rt
yy)
O
K
Op
tic
al
B
loc
k
or
B
U
no
p
roble
m
DVD:
HLX-513
CD:
HLX
-A1
NO
Y
E
S
NO
YES
YE
S
NO
NO
YES
NO
YES
In
si
d
e
*Se
rvi
c
e
Mo
d
e
M
enu
Sel
ec
t[
8]
D
riv
e
In
si
d
e
*D
riv
e
Se
le
c
t [
7
]
O
P Ch
ec
k
M
e
nu
In
s
ide
*OP
Ch
e
c
k M
en
u
Sel
ec
t[
2
]d
IO
Pt
h
en
pr
e
s
s'
E
N
TE
R
'
Sp
ec
if
ic
a
tio
n
d
IO
P
B
D
:6
m
A
DVD
, C
D
: 9
m
A
IO
P
o
u
t of
sp
e
c
if
ic
a
ti
o
n ne
e
d
B
U
repl
ac
em
en
t
Op
ti
ca
l B
lo
c
k
Un
it
(
BU)
replac
e
(Fl
o
w
c
h
a
rt
y
y
)
A
CP
ow
er
O
FF
NO
YE
S
Rem
ov
e
th
e
d
e
fec
tiv
e B
U
f
rom
Loadi
n
g
As
s
y
an
d
als
o
rem
ov
e
B
U
i
n
su
la
to
r (4
p
c
s)
Un
pac
k
n
ew
B
U
an
d
tak
e
O
P Dat
a
Ba
rc
ode
ph
ot
o by
c
am
er
a
Asse
m
b
le
BU
w
ith
I
n
su
la
to
rs to
L
o
a
d
in
g
As
s
y (
ti
g
ht
e
n
s
c
re
w
wi
th
2
kgf)
D
e
co
d
e
th
e
OP
D
a
ta
Ba
rc
ode ph
ot
o
u
s
ing
BDPRdec.exe
an
d s
av
e
th
e
te
st d
a
ta
to
USB m
e
m
o
ry
(F
il
e Nam
e:
Bu
Dat
a.
tx
t)
En
ter
S
e
rv
ic
e
M
ode an
d in
s
e
rt
USB
me
mo
ry
to
U
S
B
c
o
nne
c
to
r
Se
le
c
t
[8]
Dr
ive
-->
S
e
lec
t [
1
]
Dr
iv
e O
P
dat
a
W
rit
e
Pres
s
EN
TE
R
Af
ter
F
in
is
h
in
g
R
e
W
ri
te
OP
d
a
ta
--
>T
u
rn
AC
P
ow
er
O
FF
A
n
d
co
n
fi
rm d
IOP
b
y
se
le
ct [7
]
OP C
h
e
c
k
M
e
n
u
to
ve
ri
fy
IOP
in
sp
e
c
if
ic
a
ti
o
n
IOP i
n
s
p
ec
if
ic
at
io
n
-
->
T
u
rn
A
C
P
ow
e
r
OFF
T
u
rn
Pow
e
r
O
N
an
d
c
h
ec
k
pla
y
bac
k
per
for
m
an
c
e u
s
in
g
B
D
,
DV
D an
d CD
BLX-104
DVD:
HLX-513
CD
:
H
L
X
-A1
T
he fol
lo
w
ing c
a
ses n
e
ed OP
D
ata W
ri
te:
(1) Repl
ace
BU (M
B
is
ori
gi
nal
)
(2)
R
epl
ace M
B
(BU
is
ori
gi
nal
)
(3)
R
e
p
la
ce b
o
th
B
U and M
B
JI
G requi
rement
Di
gi
tal
c
amera (w
ith
ma
cr
o mode
)
Barc
o
d
ed
e
c
oder
(BDPRdec.exe)
instal
led i
n j
ig
PC
's
(j
ig
p
urp
o
se
)
USB memory
ESD free w
ork
b
e
nch
Drive
flowchart
-+
-+
BDP-S790
Q303 Pin 6: 12V
IC307 Pin 1: 5V
Select Mode : 1 or 2
:
n
oit
a
n
al
p
x
E
t
e
s
V
V
D
B
:
1
e
d
o
M
0
9
7
S/
0
9
3
S/
0
9
1
S/
9
3
X
B-
P
D
B
:
2
e
d
o
M
BD
P-S790
ca
n
p
Enter
Ser
vi
c
e
M
o
de
AC Power ON
Press [Display]--> [0]-->[2]-->[1]-->[SUBTITLE]
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