Sony KDL-70X4500 Service Manual ▷ View online
KDL-70X4500 (WB) 2-3
YES
No RE
D LE
D
Bli
n
k
s
NO
5VDC
CN2800 7pin on FBA board
See RED LED BLINKS (Ch
a
rt C)
NO
G8 b
o
ard
(No S
TBY5V)
YES
NO
1
10-2
4
0
VAC
CN
6000 on
F2 board
YES
AC cabl
e or AC in
let
No P
o
wer
(No rel
a
y
cli
c
ks)
YES
Power
k
e
y
does
n’t wo
rk
NO
H1VM board
ACW board
2-3.
NO POWER (Chart B)
KDL-70X4500 (WB) 2-4
2-4.
SET REBOOTS
2-5.
SELF DIAGNOSIS
2-5-1.
RED LED BLINKS TABLE
TV
m
ic
ro (on
ACW board) is
m
oni
tori
ng
if
BE
M
ic
ro & EM
MA (on
FBA
board)
a
re al
ive
or
on abnor
m
a
l status by
watch dog tim
er.
W
hen BEM
o
r EMM
A has not boot up,
T
V
M
try
to r
e-start. W
e
can
see
chassis reboot
at
this
case.
Ch
eck whether
FBA boar
d
is
supplied with
correct
power o
r not.
- FBA boa
rd
- CN 2
8
0
0
12
V power an
d
h
a
rn
es
s
to
G8 board.
- F2
800
, F410
0
,
F41
0
1
, F4
102
, F5
400
, F7
800
, F780
1
co
ndu
cti
o
n.
If
p
o
wer
r
a
il
has no pr
oble
m
,
re
place FBA boar
d
.
Powe
r
Error
(
w
at
ching 12
V rail)
T-CON Error
[CCFL]
Panel Inverter
Error
[LED]
GL
board Error
Panel Temper
atur
e Abn
o
rmal Dete
ction
Audio Abnormal Dete
ction
FAN
Error ->
Not d
e
tect (r
eboo
t operation)
[CCFL]
Pan
el Ba
lancer
Er
ror
[LED-BL]
SPI
Er
ror (Ba
by
lo
n Com
m
u
n
ica
tion
Error)
Contents
Di
spl
a
y
(Se
lf D
ia
g
n
o
s
is m
ode
)
Red LED Blink
Whe
n
sel
f dia
g
no
sis
ha
p
p
en
s,
STBY (RED) LED bli
n
ks a
n
d
the his
to
ry
ca
n be s
een
o
n
di
splay by self
di
ag
no
sis
m
ode.
POW_ERR1
T_C
O
N
BAC
K
LIT
E
PA
NE
LT
EMP
AUD
_PRO
T
FAN_ERR
BA
L
A
NCER
2
5
6
7
8
9
13
KDL-70X4500 (WB) 2-5
NO
2 times
YES
See 1) Power
Error
RED L
E
D
Blinks
NO
9 times
YES
See 6) FA
N Error
NO
5 times
YES
See 2) T-CON Error
NO
6 times
YES
See 3) B
A
CK
L
IG
H
T Error
NO
7 times
YES
See 4) T
E
M
P Error
NO
8 times
YES
See 5) A
UDIO Error
13 times
YES
See 7) B
a
lan
cer Error
2-6.
RED LED BLINKS (Chart C)
KDL-70X4500 (WB) 2-6
1)
Power Error (
R
E
D
2
t
im
e
s
b
li
n
k
)
Th
is in
d
icat
es PO
WER E
rro
r,
Lo
w
B er
ro
r o
f 1
2
V
f
ro
m
G8 b
o
a
rd
. TV Mi
cro
(o
n
ACW b
o
a
rd
)
mo
n
ito
rs p
in79 and pin138 to detect
POW
E
R_E
RR and shuts down chassi
s power
to
Standby st
atus.
TV
Micr
o pin138 Norm
al conditi
on : L
o
w / Err
o
r case : High
TV M
ic
ro pin79 i_lb_err<
0.7V(P
W_ERR_LEV)
- Check 12V at CN 1000 on ACW board.
And F1001 o
n
ACW board has 12V or not.
- Check G8 board.
2)
T-C
O
N
E
rr
o
r (
R
E
D
5
t
im
e
s
b
li
n
k
)
This indi
cat
es T-C
ON RDY signal e
rror fr
om
t
im
ing co
ntr
o
ller
of Panel
m
odule.
BE
m
icr
o pin128 on FBA boar
d
detects
it.
BE
M
icr
o pin128 Norm
al conditi
on : High /
Err
or case : L
ow
Replace
Panel
m
o
dule.
3) B
a
c
k
L
ig
h
t
E
rror (R
E
D
6
t
im
e
s
b
li
n
k
)
This indi
cat
es pan
el powe
r c
ircui
t e
rror such as
inve
rt
er.
BE
m
ic
ro pin 78 on FBA board detec
ts i
t.
BE Mi
cro pin 78 Norm
al
condit
ion :
High /
Error cas
e
:
Low
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