Read LG 42LV375H-ZA (CHASSIS:LD03X) Service Manual online
TU_SIF
003:A3
0 . 1 u F
16V
C2724
FE_TS_DATA[0-7]
045:X12
+3.3V_TU
ISA1530AC1
Q2701
E
B
C
+3.3V_TU
AZ2940D-2.5TRE1
IC2700
2
GND
3
VOUT
1
VIN
1
R2744
+1.2V_TU
100
R2721
2SC3052
Q2703
E
B
C
SCL0_3.3V
0 0 1 : I 4
0 . 1 u F
16V
C2721
0
OPT
R2700
+3.3V_NORMAL
TU_CVBS
003:A3
0
R2720
ISA1530AC1
Q2704
E
B
C
FE_TS_VAL
027:AH22
4.7K
R2743
33
R2726
10uF
10V
10V
OPT
C2709
100
R2729
18pF
50V
50V
C2712
0 . 1 u F
16V
16V
C2701
0 . 1 u F
16V
C2706
0 . 1 u F
16V
16V
OPT
C2708
FE_TS_SYNC
0 0 2 : D 1 ; 0 4 5 : X 5
22pF
50V
50V
C2713
+3.3V_TU
0
R2738
10uF
10V
10V
C2723
100K
R2723
2.2K
R2740
BLM18PG121SN1D
L2701
100
R2728
0 . 0 1 u F
25V
25V
C2718
ISA1530AC1
Q2702
E
B
C
0
OPT
R2722
FE_TS_SERIAL
002:D1
100pF
50V
50V
C2700
0
R2725
0 . 1 u F
16V
C2719
SDA0_3.3V
0 0 1 : I 4
100pF
50V
50V
C2704
0 . 1 u F
16V
16V
C2703
+5V_TU
2SC3052
OPT
Q2700
E
B
C
TUNER_RESET 001:G5
+5V_TU
0 . 1 u F
16V
C2707
0 . 1 u F
16V
C2710
82
R2749
+3.3V_TU
22pF
50V
50V
C2711
0 . 1 u F
16V
C2702
0 . 1 u F
16V
C2725
0
R2701
33
R2727
100pF
50V
50V
C2705
BLM18PG121SN1D
L2700
10K
OPT
R2724
+5V_TU
FE_TS_DATA_CLK 002:D1;045:X5
10K
R2742
+5V_TU
IF_AGC_SEL
0 0 1 : F 2
0 . 1 u F
16V
16V
C2726
0 . 1 u F
16V
C2722
18pF
50V
50V
C2714
+5V_TU
RF_SWITCH_CTL
0 0 1 : F 2
0
OPT
R2754
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.
+5V_NORMAL
ATV_OUT
0 4 1 : I 7
+5V_TU
ISA1530AC1
Q2705
E
B
C
0 . 1 u F
50V
50V
C2720
100pF
50V
50V
C2716
0
R2719
10K
R2732
1/10W
10
1%
R2718
CIC21J501NE
L2703
MP2212DN
IC2701
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
POWER_ON/OFF2_2
0 1 5 : E 7 ; 0 1 5 : I 6 ; 0 0 7 : Q 1 7 ; 0 8 9 : A I 2 4
1uF
10V
C2717
CIC21J501NE
L2702
+3.3V_TU
+1.2V_TU
200
R2739
200
R2702
200
R2712
200
R2741
470
R2746
+2.5V_TUA
+2.5V_TUA
TDFR-G135D
HORIZONTAL_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
TDFR-G155D
TU2701-*1
VERTICAL_NIM
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
0 . 1 u F
16V
C2733
1/8W
75K
1%
R2713
22K
1%
R2731
0 . 1 u F
16V
C2734
10K
R2745
LNA2_CTL/BOSTER_CTL
0 0 1 : F 2
18K
1%
R2756
TDFR-G055D
EU_VERTICAL_NIM_T2
TU2701-*2
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
FE_TS_ERR
47
R2757
47
R2709
47
R2704
47
R2710
47
R2717
47
R2705
47
R2716
47
R2711
47
R2707
47
R2703
47
R2706
47
R2708
0 . 1 u F
C2731
+3.3V_TU
FE_TS_VAL_ERR
NL17SZ08DFT2G
IC2702
3
2
4
1
5
47
R2758
FE_TS_ERR
FE_TS_VAL
0 . 1 u F
16V
C2736
SDA2_3.3V
SCL2_3.3V
22uF
16V
C2728
22uF
16V
16V
C2715
22uF
16V
16V
C2735
22uF
16V
C2730
22uF
16V
C2729
22uF
16V
C2727
TDFR-G135D(C)
TU2701-*3
HORIZONTAL_NIM_EMS
1
NC_1
2
BST_CNTL
3
+B1[5V]
4
NC_2[RF_AGC]
5
NC_3
6
SCLT
7
SDAT
8
NC_4
9
S I F
10
NC_5
11
VIDEO
12
GND
13
+ B 2 [ 1 . 2 V ]
14
+ B 3 [ 3 . 3 V ]
15
RESET
16
+ B 4 [ 2 . 5 V ]
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
NR8040T220M
22uH
L2704
FE_TS_DATA[5]
FE_TS_DATA[3]
FE_TS_DATA[4]
FE_TS_DATA[6]
FE_TS_DATA[1]
FE_TS_DATA[7]
FE_TS_DATA[2]
FE_TS_DATA[0]
close to TUNER
60mA
close to TUNER
C l o s e t o t h e t u n e r
OPTION : RF AGC
$ 0 . 1 1
CAN H-NIM/NIM TUNER for EU
200mA
C l o s e t o I C
R2
3A
R1
V o u t = 0 . 8 * ( 1 + R 1 / R 2 )
27
Chameleon(EU_GP2_BCM3556)
2 0 1 0 . 1 2 . 2 0
TUNER
xxLV375H-ZA
r ( F u l l N i m )
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