Read LG 32LH7000 / 32LH7020 / 32LH7030 (CHASSIS:LD91D) 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.
TUNER_CVBS_IF_P
47
R132
0.
1u
F
C132
+5V_TUNER
IF_AGC
A_1.2V
0.1uF
C114
+1.8V_TUNER
47
R138
0.
1u
F
C123
0.1uF
16V
C102
+1.8V_TUNER
0.1uF
C121
100
R151
10
R106
OPT
2SC3052
Q102
E
B
C
C_+3.3V
0.1uF
16V
C110
FE_TS_VAL
FE_VOUT
FE_TS_SERIAL
0.1uF 16V
C156
10uF
16V
C106
0.1uF
50V
C149
4.7K
R150
0.1uF
50V
C147
0.
1u
F
C127
0.1uF
C134
1000pF
C116
18pF
50V
C142
TUNER_CVBS_IF_P
56pF
5%
C109
TU_RESET
+3.3V_TUNER
+1.8V_TUNER
A_3.3V
+5V_TUNER
0.1uF
16V
C151
FE_AGC_SPEED_CTL
100
R147
+1.2V
+5V_TUNER
20.25MHz
X102
100
R148
NL17SZ08DFT2G
IC105
3
2
4
15
100uF
16V
C148
F E
_ D
E M
O D
_ S
D A
0.1uF
C120
+1.8V_TUNER
100uF
16V
C146
C_+3.3V
0.1uF
16V
C139
AZ1117H-1.2TRE1
IC103
ADJ/GND
OUT
IN
+3.3V_TUNER
470
R109
FE_TS_DATA[0-7]
10
R104
TUNER_SIF_IF_N
1:C9
0.
1u
F
C128
+3.3V_TUNER
+3.3V_TUNER
+1.2V
MBW3216-501TF
L101
0.1uF
C158
F E
_ D
E M
O D
_ S
C L
0.
1u
F
C126
CVBS_SCART_OUT
4.99K
1 %
R118
C_+3.3V
18pF
50V
C143
D_3.3V
0.
1u
F
C129
P_+12V
0.1uF
16V
C103
T U
_ R
E S
E T
1000pF
C122
47
R139
0.1uF
C137
+1.2V
FE_TS_ERR
A_1.2V
FE_TS_DATA_CLK
1000pF
50V
C167
FE_TS_VAL
47
R131
FE_TS_ERR
TUNER_SIF_IF_N
6.8K
R152
+5V_TUNER
A_3.3V
FE_TUNER_SDA
0.1uF
C138
FE_RESET
15K
R108
IF_AGC
0.1uF
C159
0.1uF
C136
47K
R107
100
R130
0.1uF
16V
C130
FE_TUNER_SCL
47uF
16V
C107
100
R129
+3.3V_TUNER
FE_TS_SYNC
GND
+3.3V_TUNER
0.027uF
C163
47
R137
D_3.3V
0.1uF
C117
FE_RESET
0.1uF
16V
C131
FE_TS_VAL_ERR
47
R149
1000pF
50V
C166
47
R143
4.7K
R144
R144
4.7K
R145
OPT
4.7K
R146
OPT
0.1uF
16V
C154
0.1uF
16V
C157
0.1uF
16V
C164
0.1uF
16V
C168
0.1uF
16V
C170
0.1uF
16V
C172
0.1uF
16V
C171
0.1uF
16V
C173
0.1uF
16V
C169
0.1uF
16V
C174
0.1uF
16V
C104
0
R158
390
R121
390
R122
680
R153
680
R154
4.7K
OPT
R159
4.7K
OPT
R160
+5V_TUNER
10pF
50V
C176
C_+3.3V
SC1_VIDEO_MUTE
0
R115
RT1P141C-T112
Q101
1
2
3
2SC3052
Q104
0.1uF
16V
C105
2K
R114
CVBS_SCART_OUT
390
R178
0.1uF
16V
C179
+5V_TUNER
C_+3.3V
0.1uF
16V
C181
0.1uF
16V
C180
+3.3V_TUNER
0.1uF
16V
C182
0.1uF
16V
C183
0.
1u
F
C135
47
R133
47
R134
47
R135
47
R136
47
R140
47
R142
47
R141
0.1uF
16V
C165
0.1uF
C119
1K
R155
6.8pF
50V
C177
39pF
5%
C112
6.
8p
F
OPT
C144
0.
1u
F
C124
0.
1u
F
C125
0.
1u
F
C133
0.1uF
50V
C175
0.1uF
C185
OPT
2200pF
C186
OPT
RF_ATTENUATION
+3.3V_TUNER
XC5000
IC102
1
VDDA_1
2
IN1
3
GND_1
4
IN2
5
GND_2
6
EXTCHOKE
7
GND_3
8
VDDA_2
9
VDDA_3
10
VDDC_1
11
GND_4
12
VDDC_2
13
V D
D C
_ 3
14
V D
D A
_ 4
15
V A
G C
16
VIF
17
V D
D A
_ 5
18
SI
F
19
GND_5
20
V D
D C
_ 4
21
V D
D A
_ 6
22
GND_6
23
V D
D D
_ 1
24
T E
S T
M O
D E
25
DDI1
26
VDDC_5
27
DDI2
28
ADDRSEL
29
X2
30
GND_7
31
X1
32
EXTREF
33
VDDD_2
34
SCL
35
SDA
36
GND_8
37
RESET
38
VI2C
39
V D
D C
_ 6
40
VREF_N
41
VREF_P
42
V D
D C
_ 7
43
V D
D C
_ 8
44
R E
X T
45
V D
D A
_ 7
46
GND_9
47
V D
D C
_ 9
48
V D
D A
_ 8
1008CS-821XGLC
820nH
2%
L106
0603CS-R39XGLW
390nH
2 %
L105
0603CS-R27XGLW
270nH
2 %
L103
820
R181
OPT
22
R182
OPT
ISA1530AC1
Q105
E
B
C
ISA1530AC1
Q106
E
B
C
ISA1530AC1
Q109
E
B
C
ISA1530AC1
Q103
E
B
C
10uF
16V
C160
CIC21J501NE
L108
CIC21J501NE
L109
CIC21J501NE
L110
CIC21J501NE
L116
CIC21J501NE
L113
0.1uF
16V
C161
0.1uF
16V
C162
120pF
5%
C111
4.7K
R180
OPT
0
R183
R183
OPT
0.1uF
C184
OPT
31.875MHz
X101
180
R110
0603CS-6N8XGLW
6.8nH
2%
L115
390
R179
390
R113
MLF1608A2R7J
2.7uH
5
%
L112
MLF1608A2R7J
2.7uH
5
%
L111
KCN-ET-0-0094
JK102
1
2
RCLAMP0502B
D102
18pF
C140
18pF
C141
LQH32MN2R2K23L
2.2uH
L107
15pF
50V
C152
15pF
50V
C155
DRX3913K-XK
IC104
1
I2S_WS
2
VDDL_1
3
VSSL_1
4
GPIO1
5
MSTRT
6
MERR
7
VSSH_1
8
VDDH_1
9
MCLK
10
MVAL
11
MD0
12
MD1
13
MD2
14
MD3
15
VSSL_2
16
VDDL_2
17
VSSH_2
18
V D
D H
_ 2
19
M D
4
20
M D
5
21
M D
6
22
M D
7
23
I2C_SCL1
24
I2C_SDA1
25
VSSH_3
26
V D
D H
_ 3
27
VDDL_3
28
VSSL_3
29
V SY
N C
30
GPIO2
31
S A
W _S
W
32
R S
T N
33
RF_AGC
34
IF_AGC
35
VSSAL_AFE1
36
VDDAL_AFE1
37
VDDAH_AFE1
38
VSSAH_AFE1
39
INN
40
INP
41
VSSAH_CVBS
42
VDDAH_CVBS
43
CVBS
44
SIF
45
VSSAL_AFE2
46
VDDAL_AFE2
47
PDP
48
PDN
49
XI
50
X O
51
VSSAH_OSC
52
V D
D A
H _O
S C
53
V D
D H
_ 4
54
VSSH_4
55
VSSL_4
56
VDDL_4
57
T D
O
58
T M
S
59
T C
K
60
TDI
61
I2C_SDA2
62
I2C_SCL2
63
I2S_CL
64
I2S_DA
+3.3V_TUNER
0
R184
0
R185
OPT
10pF
50V
C150
10pF
50V
C153
BAP70-02
50V
D101
OPT
32.0MHz
X103
DEVELOPE OPT
4
GND_2
1
X-TAL_1
2
GND_1
3
X-TAL_2
FE_TS_DATA[5]
FE_TS_DATA[7]
FE_TS_DATA[4]
FE_TS_DATA[2]
FE_TS_DATA[1]
FE_TS_DATA[6]
FE_TS_DATA[0]
FE_TS_DATA[3]
1 4
Tuner
LH7000 Venus Jack B/D
TUNER RESET
(TUNER RESET GPIO OPTION)
DVB-CI DETECT
: ACTIVE LOW (SOFT RESET)
[SCART1 TV VOUT]
Place the Buffer close to Tuner
(SC1_TV_VOUT_MUTE GPIO OPTION)
EAX58326901(4) PCB revision
Xceive strong channel attenuation solution_ IC102 pin2 p-i-n diode ap
L115
6.8nH=>12 nH =>6.8nH
For Attenuation
BAP70-02
PIN Diode
845 OHM 1%
Active High
for Attenuation at least 3mA
Attenuation Rev(4)
2008.10.6
Rev(6)
C140,141
33pF=>13pF=>15pF=>18pF
Rev(8)
R110
220=>560=>180
R113,179
1.5K=>1.3K=>200=>390
BECAUSE THIS POINT MAKE ATTENUATOR
NEED TO VERY CLOSE TO RF LINE
Rev(5)
C160 MLCC
Rev(5)
C111
150pF->120pF
Rev(9)
C152,155
18pF=>13pF=>15pF
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