Read LG 55LEX8-ZA (CHASSIS:LD03S) 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.
33
R2727
ISA1530AC1
Q2701
E
B
C
TU_CVBS
33
R2729
2.2K
R2740
AZ2940D-2.5TRE1
IC2700
2
GND
3
VOUT
1
VIN
18pF
50V
50V
C2714
TU_SIF
NR8040T3R6N
3.6uH
L2704
SDA2_3.3V
0 . 1 u F
16V
C2702
FE_TS_ERR
0 . 1 u F
16V
C2734
200
R2702
0 . 1 u F
16V
16V
C2726
1uF
10V
C2717
100pF
50V
50V
C2705
FE_TS_VAL_ERR
0
R2736
18pF
50V
50V
C2712
0 . 1 u F
16V
C2736
33
R2728
10K
R2755
ISA1530AC1
Q2702
E
B
C
82
R2749
MP2212DN
IC2701
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
IF_AGC_SEL
100pF
50V
50V
C2700
10K
R2742
+2.5V_TU
+5V_TU
0 . 1 u F
16V
C2719
ISA1530AC1
Q2705
E
B
C
0 . 1 u F
16V
16V
C2720
0 . 1 u F
C2731
NL17SZ08DFT2G
IC2702
3
2
4
1
5
SCL2_3.3V
+1.2V_TU
100pF
50V
50V
C2704
10pF
50V
50V
C2711
+5V_TU
+3.3V_TU
+5V_NORMAL
LNA2_CTL/BOSTER_CTL
0 . 1 u F
16V
16V
C2701
200
R2712
100
R2721
22uF
10V
C2729
+5V_TU
+1.2V_TU
2SC3052
OPT
Q2700
E
B
C
+3.3V_TU
0 . 1 u F
16V
C2721
SDA0_3.3V
+5V_TU
0
R2719
22uF
10V
C2728
+3.3V_TU
33
R2726
POWER_ON/OFF2_2
0 . 1 u F
16V
C2706
0
R2738
10K
R2732
22K
1%
R2731
+3.3V_NORMAL
0
R2720
4.7K
R2743
200
R2741
BLM18PG121SN1D
L2700
10pF
50V
50V
C2713
22uF
10V
C2730
FE_TS_VAL
10K
OPT
R2724
BLM18PG121SN1D
L2701
10uF
10V
10V
C2723
47
R2758
+5V_TU
1/10W
10
1%
R2718
2SC3052
Q2703
E
B
C
+3.3V_TU
0 . 1 u F
16V
C2725
+3.3V_TU
ISA1530AC1
Q2704
E
B
C
18K
1%
R2756
0 . 1 u F
16V
C2724
SCL0_3.3V
TUNER_RESET
0 . 1 u F
16V
C2733
0 . 1 u F
16V
16V
C2703
1/8W
75K
1%
R2713
200
R2739
100pF
50V
50V
C2716
470
R2746
100K
R2723
+3.3V_TU
0 . 1 u F
16V
C2707
10uF
10V
10V
OPT
C2709
CIC21J501NE
L2703
CIC21J501NE
L2702
0
OPT
R2700
+5V_TU
22uF
10V
10V
C2715
0 . 1 u F
16V
C2710
0 . 0 1 u F
25V
25V
C2718
+2.5V_TU
ATV_OUT
1
R2744
0 . 1 u F
16V
16V
OPT
C2708
0 . 1 u F
16V
C2722
TDFR-G155D
VERTICAL_NIM
TU2701
1
RF_S/W_CNTL
2
BST_CNTL
3
+B1[5V]
4
NC[RF_AGC]
5
AS
6
SCL[A_DEMOD]
7
SDA[A_DEMOD]
8
NC(IF_TP)
9
S I F
10
NC
11
VIDEO
12
GND
13
1.2V
14
3.3V
15
RESET
16
2.5V
17
SCL[D_DEMOD]
18
SDA[D_DEMOD]
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
22uF
10V
10V
C2737
FE_TS_SERIAL
0
R2725
FE_TS_SYNC
FE_TS_ERR
FE_TS_DATA_CLK
FE_TS_DATA[0-7]
FE_TS_VAL
47
R2710
47
R2716
47
R2757
47
R2706
47
R2711
47
R2703
47
R2705
47
R2709
47
R2708
47
R2717
47
R2704
47
R2707
TDFR-G055D
TU2701-*1
VERTICAL_NIM_T2
1
RF_S/W_CNTL
2
BST_CNTL
3
+B1[5V]
4
NC[RF_AGC]
5
AS
6
SCL[A_DEMOD]
7
SDA[A_DEMOD]
8
NC(IF_TP)
9
S I F
10
NC
11
VIDEO
12
GND
13
1.2V
14
3.3V
15
RESET
16
2.5V
17
SCL[D_DEMOD]
18
SDA[D_DEMOD]
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
10uF
16V
C2727
TC7SZ02FU
VERTICAL_NIM_T2
I C 2 7 0 2 - * 1
3
GND
2
IN_A
4
OUT_Y
1
IN_B
5
VCC
22uF
10V
C2735
FE_TS_DATA[3]
FE_TS_DATA[2]
FE_TS_DATA[4]
FE_TS_DATA[7]
FE_TS_DATA[1]
FE_TS_DATA[6]
FE_TS_DATA[0]
FE_TS_DATA[5]
27
close to TUNER
60mA
CAN H-NIM/NIM TUNER for EU
200mA
close to TUNER
C l o s e t o I C
R2
OPTION : RF AGC
3A
$ 0 . 1 1
R1
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
close to TUNER
C l o s e t o t h e t u n e r
O n l y U s e T 2 f o r C I
r ( F u l l N i m )
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