Read LG 47LEX8-CA / 55LEX8-CA (CHASSIS:LC03P) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Tuner ( Full Nim )
FE_TS_DATA[2]
FE_TS_DATA[5]
FE_TS_DATA[7]
FE_TS_DATA[6]
FE_TS_DATA[4]
FE_TS_DATA[0]
FE_TS_DATA[1]
FE_TS_DATA[3]
R2727
33
R2705
0
Q2701
ISA1530AC1
E
B
C
TU_CVBS
R2729
33
R2740
2.2K
2.2K
IC2700
AZ2940D-2.5TRE1
2
GND
3
VOUT
1
VIN
C2714
18pF
50V
18pF
50V
FE_TS_VAL
TU_SIF
SDA2_3.3V
C2702
0.1uF
16V
FE_TS_ERR
C2734
0.1uF
16V
R2702
200
C2726
0.1uF
16V
0.1uF
16V
C2717
1uF
10V
R2708
0
C2705
100pF
50V
100pF
50V
FE_TS_VAL_ERR
R2736
0
R2704
0
C2712
18pF
50V
18pF
50V
C2736
0.1uF
16V
R2728
33
R2755
10K
10K
Q2702
ISA1530AC1
E
B
C
R2749
82
82
IC2701
MP2212DN
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
IF_AGC_SEL
C2700
100pF
50V
100pF
50V
R2742
10K
+2.5V_TU
+5V_TU
FE_TS_SYNC
C2719
0.1uF
16V
16V
Q2705
ISA1530AC1
E
B
C
C2720
0.1uF
16V
0.1uF
C2731
IC2702
NL17SZ08DFT2G
3
2
4
1
5
SCL2_3.3V
+1.2V_TU
R2709
0
C2704
100pF
50V
100pF
50V
C2711
10pF
50V
10pF
50V
+5V_TU
+3.3V_TU
+5V_NORMAL
LNA2_CTL/BOSTER_CTL
C2701
0.1uF
16V
0.1uF
16V
R2712
200
R2721
100
100
C2729
22uF
10V
+5V_TU
+1.2V_TU
Q2700
2SC3052
OPT
E
B
C
+3.3V_TU
C2721
0.1uF
0.1uF
16V
SDA0_3.3V
+5V_TU
R2719
0
C2728
22uF
10V
+3.3V_TU
R2703
0
RF_SWITCH_CTL
R2726
33
POWER_ON/OFF2_2
C2706
0.1uF
16V
16V
R2738
0
R2732
10K
R2710
0
+3.3V_NORMAL
R2720
0
R2722
0
R2743
4.7K
4.7K
R2741
200
L2700
BLM18PG121SN1D
C2713
10pF
50V
10pF
50V
C2730
22uF
22uF
10V
FE_TS_VAL
R2724
10K
10K
OPT
L2701
BLM18PG121SN1D
R2706
0
C2723
10uF
10V
10uF
10V
R2758
47
47
+5V_TU
R2718
10
1/10W
1%
Q2703
2SC3052
E
B
C
+3.3V_TU
C2725
0.1uF
16V
+3.3V_TU
FE_TS_DATA[0-7]
R2716
0
Q2704
ISA1530AC1
E
B
C
C2724
0.1uF
16V
SCL0_3.3V
FE_TS_DATA_CLK
FE_TS_SERIAL
TUNER_RESET
C2733
0.1uF
16V
R2701
0
C2703
0.1uF
16V
0.1uF
16V
R2739
200
C2716
100pF
50V
50V
R2757
0
R2717
0
R2746
470
R2723
100K
+3.3V_TU
C2707
0.1uF
16V
16V
FE_TS_ERR
C2709
10uF
10V
10uF
10V
OPT
L2703
CIC21J501NE
C2727
22uF
10V
R2707
0
L2702
CIC21J501NE
R2700
0
OPT
+5V_TU
R2754
0
C2715
22uF
22uF
10V
C2710
0.1uF
16V
C2718
0.01uF
25V
0.01uF
25V
+2.5V_TU
ATV_OUT
R2744
1
C2708
0.1uF
16V
16V
OPT
C2722
0.1uF
16V
C2735
22uF
22uF
10V
R2711
0
C2737
4700pF
50V
4700pF
50V
C2738
1000pF
50V
1000pF
50V
ATV_OUT
L2704
3.6uH
3.6uH
NR8040T3R6N
TU2701
TDFR-C155D
1
RF_S/W_CNTL
2
BST_CNTL
3
+B1[+5V]
4
NC[RF_AGC]
5
NC_1
6
SCLT
7
SDAT
8
NC_2
9
SIF
10
NC_3
11
VIDEO
12
GND
13
+B2[1.2V]
14
+B3[3.3V]
15
RESET
16
+B4[2.5V]
17
SCL
18
SDA
19
ERR
20
SYNC
21
VALID
22
MCL
23
D0
24
D1
25
D2
26
D3
27
D4
28
D5
29
D6
30
D7
31
SHIELD
R2713
56K
56K
1/8W
1%
R2731
0
R2756
30K
30K
1%
27
close to TUNER
60mA
Close to the tuner
CAN NIM TUNER for CHINA
200mA
close to TUNER
Close to IC
R2
OPTION : RF AGC
3A
$0.11
R1
Vout=0.8*(1+R1/R2)
TP
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