Sony BDP-S790 Service Manual ▷ View online
Fan f
low
chart
FAN
ER
R
dis
play
appears on t
he VFD
Ent
er t
he Serv
ice Mode and t
urn on t
he f
an
from t
he I
Fc
on menu
Is
the v
olt
age of
C
N
1701 pin2 on t
he order
of
10V?
No
D
isc
onnect
the harness
from t
he f
an t
hat
is
ins
ert
ed in C
N
1701 and t
ake t
he voltage
No
Is
the v
oltage of
IC
1701 pin2 on t
he order of
3.3V?
No
Is
the c
onnect
ion bet
ween I
C
1701 pin2 and
IC
1302 pin58 broken? Als
o c
hec
k w
het
her
se
Y
se
Y
se
Y
Is
the f
an roat
ing?
No
.)
10
71
CI(
ylp
pu
sr
ew
op
naf
eht
dn
uor
a
kc
eh
C
naf
eht
ec
alp
e
R
Yes
Is
FanStat
e of
the Serv
ice Mode sc
reen set
to
O
N
?
No
D
is
connect
the harness
fr
om t
he f
an t
hat
is
insert
ed in C
N
1701 and short
pins 1 and 2
together.
D
oes FanStat
e of
the Serv
ice Mode s
creen
go ON
?
No
Is
the connect
ion bet
ween
IC
1701 pin2 and
IC
1302 pin58 broken?
Also check w
hether t
he trac
e is
bridged w
ith
the adj
ac
ent
one.
se
Y
se
Y
C
heck
w
het
her s
omet
hing is c
aught in t
he
fan blades.
If
there is not
hing t
here,
replac
e
R
eplac
e t
he f
an.
9-9
BDP-S790
the t
rac
e is
bridged w
ith
the adj
ac
ent
one.
Et
hernet f
low
chart
C
annot
connec
t
w
ith
t
he
net
w
ork,
cannot
update through the network
Is
t
he LAN
cable plugged in properly
?
No
Plug in t
he LA
Nc
able
fi
rm
ly
Yes
Yes
Is
t
he LED
o
f t
he hub rout
er lit
?
(LI
N
K LED
)
No
Is p
o
w
er
s
upplied
t
o t
he
M
B
board?
No
To Pow
er Supply
(Syst
em) f
low
c
hart
Yes
Yes
R
eplac
e
th
e
MB board.
Are
the
ne
tw
ork settings of the
m
enu
c
orre
c
t?
No
Make the
c
orre
c
t
ne
tw
ork s
et
tings.
Yes
R
eplac
e t
he MB board
9-10
BDP-S790
WLAN flowchart
9-11
BDP- S790
Is
the
un
it
connect
ed to the Ne
tw
o
rk
correctl
y?
C
onne
ct
the un
it
to
the
net
w
io
rk
by
“X
MB” – “
S
etup” – “
N
etwor
k
Sett
ing” – “
Inter
net
Sett
ings” – “
W
ir
eless Setup(builtt-
in)
”
T
u
rn o
ff
then
tu
rn
on
w
ith
se
rv
ice
m
o
de
Is hard
ware
inform
atio
n of
W
L
AN m
o
d
u
le
appea
red
on
the scr
e
en?
Check as
follow
[1
] D
iag
M
enu
Category
:
Wirel
e
ssLAN Test
(1
)S
how
WLA
N
H
w
Info
No(*1)
Is
c
a
bl
e b
e
twe
e
n
Hu
b
a
n
d
MB
w
ire
d c
o
rrec
tly?
Corre
ct th
e
w
iring b
et
w
een
WLA
N
modul
e
a
nd
MB
Rep
la
c
e
the W
L
A
N
mod
u
le
(R
F
part
o
f t
he
WLA
N
m
od
u
le
seems
t
o
be
d
efe
cti
v
e
)
View
network
status by
“XMB”
–
“S
e
tu
p”
–
“Ne
twork
S
et
ti
n
g”
–
“I
n
tern
e
t
S
e
ttin
gs
” –
“Vie
w
Net
work
St
a
tus”
Fini
s
h
Is the
unit connected to the Network
correctl
y?
Fin
ish
a
) Re
place
t
h
e
ca
ble
or
b) If the
c
abl
e
is
alr
e
ad
y
re
p
laced
, re
place
t
h
e
WL
A
N
modul
e
T
u
rn on
w
ith
no
rm
a
l
m
o
de
Cannot connect with the wireless network
No
No
No
Yes
Yes
Yes
Yes
USB (Fron
t)
Dev
ice Flow
USB dev
ice
is not reco
g
n
iz
ed
Insert the USB dev
ice again.
Is
i
t
recogniz
ed when the
powe
ri
s
turned
O
FF
and t
hen
O
N again
?
No
Is
5
V
pre
s
en
ta
t
CN702
(FR-317)
board
) pin10,11?
No
Is
5
V
pres
e
nt
at
CN1305
(MB
board)
Pin 10 or pin 11?
No
Is
6V present at
IC
6
02 pin8
(M
B
board)
?
No
Power suppl
y
IC301 (MB board
)
defective
e
Y
s
Y
s
e
Y
s
e
Y
s
e
Poor contact
o
f the U
S
B d
e
vi
c
e
Def
e
ctiv
e FFC bet
we
en the FR
boar
d
an
d
t
he
MB
board.
Does replac
ing I
C
602(MB board)
improv
e the symptoms?
No
Repla
c
e t
he M
B
board
Y
es
Repl
ac
e the FFC bet
we
en th
e
MB
board
an
d
t
he
IF
boar
d
.
Do
the
sy
mp
toms
im
pro
ve
?
N
o
Repla
c
e
the
MB board
2
0
6
CI(
.
M
B
board)
de
fec
tiv
e
Ye
s
Def
e
ctiv
e
FFC betwe
en
t
he
IF
boar
d
and t
he
MB
boa
rd
9-12E
BDP- S790
USB (Rear) Dev
ice Flow
US
B
d
e
vi
c
e
is
n
o
t
reco
g
niz
ed
Inser
t t
he
US
B
de
vi
ce
aga
in
.
Is
it
recog
ni
z
e
d wh
e
n
th
e powe
ri
s
tu
rned OFF
and
th
e
n
O
N again
?
No
Is
5V pres
e
nt
a
t CN
601
pi
n1
(MB-151
board
)?
N
o
Is
6V present at
IC601 pin8
(MB
board)
No
Power
supply IC301 (MB Board)
defective
Poor contac
t of
t
he USB dev
ice
Does replac
ing I
C
601(MB board)
improv
e
the sym
p
tom
s?
No
Repla
c
e the MB
board
Ye
s
IC
601(M
B
board)
def
ectiv
e
Ye
s
Ye
s
Repl
ace
t
h
e
M
B
board
Ye
s
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