LG 32LG5600 (CHASSIS:LD85D) Service Manual ▷ View online
- 17 -
Does minute
discharge At Module?
Is the LVDC cable
normal?
Is the VAVS on?
Check the LCD Module
Yes
No
YES
Yes
Reconnect the LVDS
cable in P801.
No
Is the IC700(FLI8548)
Output normal?
Replace the VSC.
No
NO
Replace the Power
board
Is the Low/High output
voltage normal except for
stand-by 5V?
NO
4. No Raster
(1) Symptom
1) No OSD and image occur at screen.
2) It maintains the condition where the front LED is green.
2) It maintains the condition where the front LED is green.
(2) Procedure check
5. In case of strange screen display in specific modes
5-1. In case of no OSD display
(1) Symptom
1) LED is green.
2) The minute discharge is continuously accomplished from the module.
2) The minute discharge is continuously accomplished from the module.
(2) Procedure check
Is the LVDS cable
normal ?
Is the VSC Board
normal?
Is the LVDS cable
connected?
Re-insert the Cable.
Yes
No
No
Yes
Does the FIL8548
IC(IC700) operate?
Replace the FIL8548
IC(IC700)
No
Is the Ctrl Board of
Module normal?
Replace the Ctrl B/D.
No
No
Yes
Replace the VSC B/D
Replace the cable.
Yes
- 18 -
5-2. In case there is no display on the screen in specific modes
(1) Symptom
1) There is no screen display from a specific input mode
(RF, AV, Component, RGB, DVI).
(2) Procedure check
1) Check the all input modes have normal display.
2) Check the video(main)/ data(sub), video(main)/ video(sub) have normal
2) Check the video(main)/ data(sub), video(main)/ video(sub) have normal
displays from the PIP mode or DW mode(re-check it/ swap).
(3) In case of an unusual display in RF mode
(4) In case of an unusual display in Component, RGB mode
(5) In case of an unusual display in HDMI mode
(6) In case of an unusual display in SCART1 mode
Is the Tuner normal?
Is the CXA2069Q normal?
Is the Tuner Cable connected?
Re-insert the cable
Yes
No
No
Yes
Is the FIL8548 normal?
Replace the Tuner.
No
Are the Input voltage, IIC Communication
and CVBS output normal?
Yes
Are the Input voltage, IIC
Communication and HV sync normal?
No
Replace the IC.
No
Are the input voltage, IIC
Communication and HV sync normal?
No
Block A
Replace the IC.
No
Are the R,G,B input and H,V
Sync of the JK1100 normal?
Sync of the JK1100 normal?
Check the input source.
No
Yes
Same as Block A.
Is the SIL9125 (IC1000)
normal?
Yes
Same as Block A.
Are Input voltage, IIC Communication
and HV sync normal?
No
Replace the IC.
No
Is the Video input of the
A/V Jack(JK1200) normal?
Yes
Same as Block A.
Check the input source.
No
- 19 -
(7) In case of an unusual display in SCART2 mode
6. In case of no sound
(1) Symptom
1) LED is Green.
2) Screen display appears but there is no sound.
2) Screen display appears but there is no sound.
(2) Procedure check
Is there no sound for
All input(modes)?
Is there no sound
only for HDMI?
No
Yes
Download
the EDID data
Check the signal after CAX2069
refer to circuit diagram
refer to circuit diagram
No
Is there no sound only
for specific input?
(except HDMI,DTV,RF)
Check the signal before CAX2069
refer to circuit diagram
refer to circuit diagram
No
YES
YES
Is there no sound
only for RF?
Check
the Tuner IN/OUT
No
YES
YES
Is there no sound only
for AV/component/PC
input?
Is the output of
CXA2069 normal?
No
YES
Is the IC1300
operating normally?
Replace the IC1300
(MSP4450)
No
Is the IC1301
operating normally?
Replace the IC1301
(NTP300A)
No
YES
Replace the VSC B/D
YES
No
Replace the CXA2069.
Is the speaker on?
Set on speaker on in
menu.
No
Is the speaker Cable
normal?
Check the Speaker
Cable.
No
Yes
Is the Video input of the
A/V Jack(KJ1201) normal?
Yes
Same as Block A.
Check the input source.
No
- 20 -
BLOCK DIAGRAM
HDM
I3
HDM
I3
Co
m
m
o
n
In
te
rf
a
c
e
LV
D
S
3
1
P
AV
1
AV
AV
1
DT
V
O
u
t
MN
T
O
u
t
DT
V
O
u
t
MN
T
O
u
t
RG
B
RG
B
PC
AU
D
IO
PC
AU
D
IO
ST
i7
1
0
x
M
P
E
G
D
e
c
ode
r
1.
2V
2.
5V
3.
3V
5V
8V
F
L
I8
54
8H
-L
F
(C
O
R
T
E
Z
P
lu
s
)
Di
g
it
a
l V
id
e
o
Pr
o
c
e
s
s
o
r
1.
8
V
2.
5V
3.
3
V
HD
M
I2
HD
M
I2
HD
M
I
S/
W
(3
:
1
)
3
.3
V
3
.3
V
Po
w
e
r
ST
5
V
ST
5
V
1
2
VV
6V
1
R
L
C
X
A
2069Q
AUDI
O
/
V
IDE
O
SW
9V
M
S
P
4
450K
So
u
n
d
Pr
o
c
e
s
s
o
r
9V
5V
NTP
3
0
0
0
A
Au
d
io
I
C
16VV
Buf
fer
3.3
V
3.3
V
V
L
R
Y/C
V
L
R
Y/C
C
o
m
pon
e
n
t
Y
Pb
Pr
L R
C
o
m
pon
e
n
t
C
o
m
pon
e
n
t
Y
Pb
Pr
L R
R
F
IN
R
R
F
IN
1.
8
V
1.
8
V
3.
3
V
3.
3
V
5V5V
D/
A
Unity
Tu
n
e
r
T
D
F
V
-G
135
D
S/
PD
IF
S/
PD
IF
F E_
T S_
D at
a
TS
_
D
ATA
C I_
T S_
D at
a
R
G
B
, 2
4
b
it
(
S
D
, H
D
)
CV
B
S
,
DT
V
L/
R
OU
T
TM
D
S
CE
C(
1
/
2
)
COM
PY/
Pb/P
r
PCR
/G
/B/H
V_
SYN
C
SCA
RT
R/G/B/F
B
I2S
SID
EA
/V
S IF
/A
M _A
U D
IO
C O
M P
&P
CR
/LI
N
A V
R /L
O UT
T V
R /L
O UT
TV
R
/
L
O
U
T
S C
A R
TV
,R
/LIN
D TV
/M
N T
V ,R
/L
O UT
T U
_ M
A IN
T V_
V O
U T
V,
Y
/
C
L/
R
M AIN
_ V/
Y /C
O UT
R EC
8
12v
LV D
S
So
u
n
d
Si
g
n
a
l
V
ide
o
S
ign
a
l
So
u
n
d
Vi
d
e
o
Si
g
n
a
l
RX
/
T
D
S
ig
n
a
l
Et
c
. Si
g
n
a
l
V
ide
o
S
ign
a
l
&
Si
g
n
a
l
Hs
y
n
c
,
V
s
yn
c
,
D
E
HD
M
I1
HD
M
I1
1
.8
V
1
.8
V
HD
M
I
RX
(2
:
1
)
CE
C
R G
B ,2
4bi
t
TM
D
S
3
, C
E
C
TMD
S
I2
S
_
H
D
MI
H sy
n c,
V sy
n c,
D E
74
L
C
X
1
5
3.3
V
74
L
C
X
7
3.3
V
I2
S
_
D
T
V
I2
S
SPD
IF
_O
UT
3
.3
V
3
.3
V
1
.8
V
1
.8
V
CE
C
TMD
S
CL
K
_
D
T
V
CL
K
_
H
D
M
I
Click on the first or last page to see other 32LG5600 (CHASSIS:LD85D) service manuals if exist.