LG 32LH35FD Service Manual page 22

A
TUNER
7
+5.0V_TU
CTR
1
RF-GAIN_SW
2
C1108
B0[+5V] 10V
3 0.1uF
10uF
50V
C1106
VTU
4 TU_LGIT
TU_LGIT
RF_AGC
5
TU_LGIT
B1[+5V]
6
NC_1
TU1101
6 7
TDYR-H071F SIF
8
VIDEO_OUT
9
NC_2
10
NC_3
11
AIF
12
B2[2.5V]
13
B3[3.3V]
14
B4[1.2V]
15
RESET[SYRSTN]
16
SDA
17
SCL
18
RSEORF
19
SBYTE
20
5
SPBVAL
21
SRDT
22
SRCK
23
24 C1107
22pF
50V
SHIELD
TU_LGIT
4
MAIN & SUB TUNER +5V
3
2
+12.0V
IC1100
AS7809DTRE1
MLB-201209-0120P-N2
INPUT OUTPUT
1 3
2
GND
C1101
C1100
0.1uF 100uF C1102
0.1uF
16V 16V
50V
1
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.
B C
D3.3V
C1116-*1
0.1uF
50V @netLa
0
TU_LGIT
C1116 R1118
2200pF
RF_GAIN1
50V 0
R1117
C1118
2200pF
50V
C1125 C1126 C1130
10uF
0.01uF
TU1102
VA1G5BF8005
RF_SW
1
C1128
GAIN_SW
2
0.01uF
BB
D2.5V
3
B1
4
L1105
AFT
0
5
R1108
SIF C1121 C1123 C1124
6
0.1uF 0.1uF
10uF
VIDEO
C1127
7
0.1uF
B2
8
B3
9
B4
10
RESET R1109
22
11 TUNER_RESETb
3:T26
SDA
22 R1110
12
SDA0_3.3V 3:T26
SCL R1111
22
13 SCL0_3.3V
3:T26
RSEORF
14
SBYTE
22 R1112
15 TU_SYNC
3:T27
SPBVAL
0
16
R1116
SRDT
22 R1113
17
TU_SDATA 3:T27
SRCK
22 R1114
18 TU_SCLK
3:T27
C1109
22pF 19
50V
SHIELD
TU_LGIT
TU_SHARP
10uF C1122
C1110
91pF
50V T U_LGIT
IC1101
KIA78R05F
6
1 2 3 4 5
L1102
MLB-201209-0120P-N2
1K
L1100
R1100
C1112 C1113
C1104 C1105 C1111
C1103
0.33uF 0.1uF 47uF 0.1uF 0.01uF
100uF 16V
16V 50V 50V
50V
16V
D E
RF_SW
RF_GAIN1
+5.0V_TU
L1107
0.1uF
+5.0V_TU
Place close to Pin
L1109
C1131 C1134
22uF 0.1uF
Place close to Pin
D3.3V
L1108
C1132 C1135
0.1uF
10uF
D1.2V A1[RD]
330
C R1130
A2[GN]
L1110
LD1101
SAM2333
C1136 C1138
C1133 ENG
0.1uF
0.1uF
10uF
D3.3V
SAM2333
LD1102
ENG
R1128
A1[RD]
1K
C
A2[GN]
+5.0V_TU
L1111
2012
C1139
R1127
0.01uF
0
OPT
C1137 E
TP9
0.01uF
Q1101
B
2SA1504S
R1125
C
10K
R1122
TU_CVBS_IN 3:T25
56
TP8 TU_CVBS_INCM
3:T25
GND
+5.0V_TU
C1114 C1115 C1120
0.1uF 100uF
4.7uF
16V 16V
10V
OPT
F G H
TU_SIF
3:T25
TU_SIF_INCM
3:T25
BRAZIL DVR DV
I J
2009.01.20
TUNER
5 17