LG 42LG6000 / 42LG6100 (CHASSIS:LD89F) Service Manual ▷ View online
C
2008
- 17 -
Symptom
1)
No
O
S
D and
image
occu
r on
the
sc
reen
.
2)
It ma
in
ta
ins
the condition
w
ith
the front LED
is wh
ite
.
Check the foll
ow
ings
D
oes
Module
con
trol s
ignal O
K
?
No
Yes
Is t
he I
nv
ert
er
OK
?
Is
Low
/H
igh
vo
ltage
outputs
proper
ly
ex
cep
t s
tand-by
5V?
No
Re
pl
ace the
Power
board.
No
C
heck
the
LCD
Module
Yes
Is
the
LVDS
cabl
e OK
?
Re
connect
the LVDS cab
le
in
P501 or
P502.
No
Yes
Is
the IC100 (F
LI
106X0H
)
Ou
tput nor
mal?
Re
pl
ace the VSC
No
3. No Raster
C
2008
- 18 -
- 19 -
C
2008
2) In case of abnorm
al display on the scr
een in specific mode
Symptom
1)
The sc
reen does not display the
pic
ture from spec
ific
input mode
(R
F,D
T
V, AV,
Component, RGB,
H
D
MI)
.
Check the followings
Is
the input voltage
and CVBS
outpu
t
for t
he t
un
er OK
?
Is
the tuner
OK?
In case of abnormal
display on the screen when RF mode.
Is
the RF cable
connected w
ith
TV
se
t?
C
onnect the
R
F
cab
le.
Re
pl
ace the tuner
.
Is
IC100(FL
I1
06X0H
) OK?
Is t
he IIC communication wav
ef
orm
between the tuner
and IC1
00
O
K
?
Re
pl
ace IC100
(FL
I106X0H)
No
Yes
No
No
No
No
Yes
Block A
In the case of abnormal di
splay on the screen when USB mode.
Is USB
5V
P
ower
OK
?
Yes
No
Re
place IC90
2
Is
USD DP/DM
wav
ef
orm O
K
?
No
Sa
me
as
Block
A
- 20 -
C
2008
In the case of abnormal display on
the screen when
side AV1,2 / AV3 mode.
Sa
me
as
Block
A
In the case of abnormal display
on the screen when Component, RGB mode.
In the case of abnormal displa
y on the screen when
HDMI1,2,3 mode.
Is t
he HDMI
switch
(I
C
200)
O
K
?
Is
the TM
D
S
w
avefo
rm
be
tw
een
the
IC
and HD
MI
jacks
O
K
?
Re
place IC20
0
No
No
Yes
Is
video input o
f the AV
(J
K100,J
K10
1,JK103
) OK?
Yes
No
C
heck
the input source.
Is
R
,G,B inpu
t and
H
/V
sy
nc
of the JK102,P101 OK?
Yes
No
C
heck
the input source.
Sa
me
as
Block
A
Sa
me
as
Block
A
In the case of abnormal disp
lay on the screen when
HDMI4 mode.
Is
the HDMI Jack
(J
K204)
O
K
?
Is
the TM
D
S
w
avefo
rm
be
tw
een
the
IC
and HD
MI
jacks
O
K
?
Re
pl
ace JK204
No
No
Yes
Sa
me
as
Block
A
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