LG 42LG350H (CHASSIS:LD85F) Service Manual ▷ View online
- 21 -
Replace the “Clock display” item from
No to Yes.
No to Yes.
Check the Clock ass’y.
No
Check the current time establishment
on “Time” item of user menu.
on “Time” item of user menu.
No
Check the clock cable.
No
Re-solder or replace the defect part.
No
Yes
Check the
“Clock Display” item on
SVC Menu.
Yes
Check the “Time” item
on user Menu.
Yes
Is the clock cable
normal?
No
Check I2C line &
output of IC1303
output of IC1303
Replace the LED clock.
No
Yes
Check the LED clock.
13. Don’t operate Front clock
- Direct user setting
- 22 -
- Change the “Clock display” item
from No to Yes.
- Change the “PR. for TTX Clock”
item from No to Yes.
from No to Yes.
- Change the “PR. for TTX Clock”
item from No to Yes.
Check the Clock ass’y.
No
Check the clock cable.
No
Re-solder or replace the defect part.
No
Yes
Check the
“Clock Display” item on
SVC Menu.
Yes
Is the clock cable
normal?
No
Check I2C line &
output of IC1303
output of IC1303
Replace the LED clock.
No
Yes
Check the LED clock.
- Setting that use TTX information
- 23 -
Check the RJP & Replace the RJP.
Replace the “RJP” item from
No to Yes.
No to Yes.
No
Check the supply Power.
No
Check the I2C line of IC103.
No
Yes
Check the “RJP” item
on SVC Menu.
Yes
Is the supply
12V power of RJP good.
(JK1300_Pin1)
No
Is the I2C
communication good.
(IC103)
14. Don’t operate RJP
Check the Buzzer(BU1300) &
Replace the Buzzer.
Replace the Buzzer.
Check the current time establishment
on “Time” item of user menu.
on “Time” item of user menu.
No
Set to the alarm time.
No
Re-solder or replace the defect part.
No
Yes
Check the “Time” item
on user Menu.
Yes
Push to alarm key
in user remote control.
No
Check input &
output of IC1300
15. Don’t operate Buzzer
- 24 -
BLOCK DIAGRAM
LV
D
S
L
G
E
7
363C
(I
C
1
0
0
)
S
T
M
A
V
340
(I
C
700)
NTP3
0
0
0
A
(I
C
1
00
0)
SP
(
R
)
SP
(
L
)
5V
_
A
N
T
_
M
N
T
EEP
R
O
M
KI
A
7
4
2
7
(I
C
1
04)
I2
C
_
D
_
T
U
/
I2
C
_
A
_
T
U
KE
Y
1
/
2
TV Tuner
TV Tuner
B
OOS
T
E
R
SI
F
TV
_
C
V
B
S
SC
1
_
R
/
G
/
B
DS
U
B
_
R
/
G
/
B
R/
G
/B
PC
_
L
/
R
_
IN
COM
P
_
Y
/
P
b
/
P
r
C
O
M
P
_L
/
R
_I
N
D
S
U
B
_H
/
V
_S
Y
N
C
M
A
X
3
232
(I
C
702)
DD
C/
UA
R
T-T
x
/
R
x
HD
M
I
Sw
it
c
h
(I
C
902)
EEP
R
O
M
HD
M
I_
I2C
DD
C
_
I2
C
*
2
CE
C
TM
D
S
*
2
US
B
_
D
M
/
D
P
5V
_
H
D
M
I
TU
_
T
S_
D
A
TA
IIS
MUT
E
LE
D
_
G/
R
&
IR
DT
V
/
T
V
_
V
OU
T
SC
1
_
L
/
R
_
IN
SC
1
_
C
V
B
S
_
IN
L
C
D
F
H
D
Pa
n
e
l
RES
E
T
I2
C
I/
O
E
x
p
a
n
d
e
r
(I
C
1
0
3
)
I2
C_
A
_
T
U
T S_Serial
74L
V
C
54
1A
(I
C
800)
DDR Memory
32MB*2(IC300, 301)
EEP
R
O
M
Sid e_V/ L/ R
IR
&
C
o
n
tr
o
l
B/
D
24C
512
(I
C
1
05)
HP
D*
2
74L
X
1G
14C
(I
C
1300)
Bu
z
z
e
r
(B
U
1
300)
PW
M
LE
D
C
lo
c
k
B/
D
P
IC
16F
819
(I
C
1303)
I2
C
T
P
A
3124D
2
(I
C
1
001)
E
X
T_
SPK
(J
K
600)
IR
_
O
U
T
(T
o
R
S
2
3
2
J
A
C
K
)
S
1
4925
(Q
1205)
5V
o
r 12V
O
U
T
(T
o
R
S
2
3
2
J
A
C
K
)
On
/
O
ff
J
L
C
1
562
(I
C
103)
I2
C
Co
n
tro
l 4
b
it
RJ
4
5
(J
K
1
3
0
0
)
: H
o
te
l
F
u
n
c
ti
o
n
S/
PD
IF
(J
K
7
0
5
)
Ex
t.
Vo
l
C
tr
l
(J
K
1301)
Au
d
io
Ou
t.
(J
K
7
0
2
)
Flash Memory
8MB*2(IC106, 107)
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