LG 37LB1D-UB, Руководство по обслуживанию

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C
h
eck A
n
ten
n
a
C
a
ble
C
h
eck A
T
SC/
N
TS
C
/OO
B
T
u
n
e
r(
T
U1300
),
5V
,
IF
o
u
t
C
h
eck LG
D
T
3703
(I
C1305
)
in
put
s
po
w
e
r pin
s
,
Os
c(2
5Mhz), I
F
p
in
C
h
eck C
P
L
D
(I
C305
)
In
pu
ts
C
L
K
, SO
P,
Va
lid
, E
rr
o
r,
Da
ta
C
h
eck LG
D
T
3703
(I
C1305
)
Outp
uts
C
L
K,
S
O
P,
V
a
li
d,
Err
o
r,
Dat
a
C
h
eck H
D
2.4
(L
G
D
T1102F
) In
pu
t
C
L
K
, SO
P,
Va
lid
, E
rr
o
r,
Da
ta
C
h
eck PO
D C
o
n
tr
o
ll
e
r
L
G
DT3502
B
(I
C
1200
)
C
h
eck PV
R
S
oc
(L
G
D
T1304
)
DTV
C
h
eck C
P
L
D
(I
C305
)
o
u
tp
u
ts
C
L
K
, SO
P,
Va
lid
, E
rr
o
r,
Da
ta
CA
D
T
V
C
h
eck C
P
L
D
(I
C305
)
In
pu
ts
C
L
K
, SO
P,
Va
lid
, E
rr
o
r,
Da
ta
C
h
eck C
P
L
D
(I
C305
)
In
pu
ts
C
L
K
, SO
P,
Va
lid
, E
rr
o
r,
Da
ta
NG
C
h
eck C
P
L
D
(I
C305
)O
u
tp
u
ts
C
L
K
, SO
P,
Va
lid
, E
rr
o
r,
Da
ta
3 :
_
C
h
eck LGD
T
3703
(I
C1305
) i
n
p
u
ts
po
w
e
r pi
ns
,
Osc
(25
M
h
z
),
I
F
p
in
Si
g
n
a
l
4 :
_
C
h
eck
LG
DT
3703
(I
C
1305
)
O
u
tp
u
ts
5
: _
I
n
case
o
f D
T
V
C
h
eck
CPL
D
(I
C
305
) I
n
pu
ts
(C
L
K
,
SOP,
Val
id
, E
rr
o
r,
Da
ta)
_ Si
g
n
al
S
h
ap
e is
same
(a
b
o
v
e
)
6 :
_
In
case o
f
C
A
D
T
V C
h
eck
PO
D
C
o
n
tro
lle
r
_ Si
g
n
al
S
h
ap
e is
same
(a
b
o
v
e
)
7.
_Check
CPLD(
IC305)
Inputs
(CLK,
S
O
P, V
a
lid, Er
ror, Dat
a)
8.
_
C
h
eck
P
V
RS
o
c
(L
G
D
T1304
)
9
._
Ch
e
c
k
C
P
L
D
(IC3
0
5
)Outputs
(CLK,
S
O
P,
V
a
lid
,
Error
, D
a
ta
)
10._ Check HD2.4(
L
G
DT1102F)
Input
(
C
LK, S
O
P
,
V
a
lid, E
rror, Data)
..... ..... ..... ..... ..... ..... .....
TPCLK
TPSOP
TPVALID
nTPERR
TPDATA[7:0]
byte0(47h)
byte1
byte2
byte187
Seems to noise
1 : _Check Antenna cable(RF switch, Tuners...) 2 : _Check Tuners Vcc and IF out
•
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