Sony KDL-70X4500 Service Manual ▷ View online
KDL-70X4500 (WB) 2-7
4) T
e
m
p
E
rr
o
r (R
E
D
7
t
im
e
s b
li
n
k
)
This indi
cat
es high
te
m
p
eratu
re
insid
e
chass
is. IC1000 on ACW board Side
is
m
onito
ring
te
m
p
er
ature.
I
C
1000 is contr
o
lled by BE
M
I
2
C.
When it
happens;
- Check chassis
environ
m
ent.
- Check around IC1000 and rep
lace ACW board if t
e
m
p
erature
m
o
n
ito
ring circuit has
proble
m
.
5) A
u
d
io
E
rror (R
E
D
8
t
im
e
s b
li
n
k
)
. .
This indi
cat
es Audio E
rro
r.
(P
rote
ct
ion)
I
t
happens;
- Error of Speake
rs
and Harness.
- Digita
l amp on K2 Board a
re H
igh Te
m
p
e
ratu
re.
Check Voltage
at
CN1002 20pin on ACW boar
d. ( Low =
Nor
m
a
l ,
High=
Error)
If E
rror , Repl
ace
Speaker
or H
a
rnes
s or K2 board.
- Low Voltage
at
IC
1800 [
Au
dio_Vcc(=12V)
, A9V , D3.3V ]
- E
rr
o
r of I
C
1800
Replace
ACW board.
KDL-70X4500 (WB) 2-8
7) B
a
la
n
c
e
r
E
rror (R
E
D
1
3
t
im
e
s b
li
n
k
)
This indi
cat
es Inverter board
erro
r o
f panel
m
odule.
BE
m
icr
o pin163 on FBA boar
d
detects
it.
BE
M
icr
o pin163 Norm
al c
ondition : High / Er
ro
r case : L
o
w
Check h
a
rn
ess connection between
CN 9700,
9701 on CF1 b
o
ard and panel
m
odu
le.
6) F
A
N
E
rr
o
r
(R
E
D
9
t
im
e
s b
li
n
k
)
This indi
cat
es
FAN erro
r.
(exc
ept 40
inch
m
odel
)
BE
m
icr
o pin154 on FBA boar
d
detects
it.
BE
M
icr
o pin154 Norm
al condi
tion : L
ow / Err
o
r case : High
- Check the ha
rnessconnection of FAN.
- Check the Voltag
e at CN1301 on ACW
board. (
Low = Error
, High = No
rm
al
)
Replace
the FAN.
KDL-70X4500 (WB) 2-9
Here
is
t
rouble sho
o
ting flow rela
ted
audio
Aud
io
problem
Only Sp
eak
er ou
t?
YE
S
NO
UI
s
e
tti
ng
corr
ec
t?
Volum
e
, S
P
o
ff/
O
n
HP
L
ink
Analog Ch
a
n
n
e
l
Proble
m ?
Digital Ch
a
n
n
e
l
Proble
m?
HDM
I
Proble
m ?
Se
t c
o
rr
ect
ly
or
re
se
t by
m
e
nu.
Ch
eck
Sp
ea
k
e
r
ACW board
K2
boa
rd
NO
YE
S
NO
NO
Ch
eck
FB
A
b
oard
ACW board K2
boa
rd
Joi
n
t con
n
ecto
r
Ch
eck
ACW board
Ch
eck
FB
A board
ACW board Joi
n
t con
n
ecto
r
YE
S
YE
S
YE
S
NO
Ch
eck
ACW board K2
boa
rd
2-7.
AUDIO PROBLEM (Chart D)
KDL-70X4500 (WB) 2-10
Here
is
t
rouble sho
o
ting flow rela
ted
Video
Vid
e
o
problem
All inp
u
ts
have
pr
oble
m
?
YE
S
NO
Digital
/Analog
Ch
a
n
n
e
l
Proble
m ?
Com
p
onent
Proble
m?
HDM
I
Proble
m ?
Ch
eck
LVD
S
ha
rn
ess
G8/G9 boards
FB
A
b
oard
Pa
n
e
l
Mo
dule
CF1 board
NO
NO
Ch
eck
F
BA board
ACW board
Joi
n
t con
n
ecto
r
Ch
eck
FB
A
b
oard
ACW board
Joi
n
t con
n
ecto
r
Ch
eck
FB
A
b
oard
ACW board
Joi
n
t con
n
ecto
r
YE
S
YE
S
YE
S
NO
NO
Ch
eck
FB
A
b
oard
YE
S
YE
S
Back Light
turn on?
OSD
ap
pear ?
NO
Ch
eck
L
VDS
h
a
rn
ess
FB
A
b
oard
CF1 board
VCB
S
Prob
le
m?
Ch
eck
ACW board
YE
S
2-8.
VIDEO PROBLOM (Chart E)
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