LG 50PK550 Service Manual page 32
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+3.3V_TU
/FE_RESET
C1141
READY
0.1uF
R1142
16V
10
(TUNER RESET GPIO OPTION)
TU_RESET
XC5000_RESET
10
R1127
TUNER RESET
: ACTIVE LOW (SOFT RESET)
+1.8V_TU
KCN-ET-5-0094
JK1101
L1111
C1134 1000pF
C1126 39pF
0603CS-6N8XGLW
2%
C1120
56pF
1
2
6.8nH
C1109 0.1uF
RCLAMP0502B
D1101
C1
A
C1146
120pF
C2
+1.8V_TU
To separate chassis ground
R1166
0
R1174
0
R1182
0
R1167
0
R1175
0
R1183
0
R1168
0
R1176
0
R1184
0
R1169
0
R1177
0
R1185
0
R1170
0
R1178
0
R1171
0
R1179
0
R1172
0
R1180
0
R1173
0
R1181
0
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.
Copyright © 2010 LG Electronics Inc. All rights reserved.
Only for training and service purposes
16V
0.1uF
C1147
C1159
0.1uF
16V
0.1uF
C1164
+1.8V_TU
+3.3V_TU
+3.3V_TU
C1165
0.1uF
VDDA_1
GND_8
1
36
IN1
SDA
2
35
GND_1
SCL
3
34
C1108
C1121
IN2
VDDD_2
18pF
4
33
IC1104
GND_2
EXTREF
0.1uF
5
32
L1114
EXTCHOKE
XC5000
X1
6
31
X1102
820nH
GND_3
GND_7
2%
7
30
1008CS-821XGLC
VDDA_2
X2
31.875MHz
8
29
C1167
0.1uF
VDDA_3
ADDRSEL
9
28
C1173
18pF
C1158 0.1uF
VDDC_1
DDI2
10
27
C1151
GND_4
VDDC_5
11
26
C1171
0.1uF
VDDC_2
DDI1
12
25
0.1uF
+1.8V_TU
+3.3V_TU
L1101
MLB-201209-0120P-N2
C1119
0.1uF
C1176
0.1uF
16V
R1130
1K
C1133
0.1uF
16V
+5V
C1106
R1122
0.1uF
390
16V
E
R1135
680
Q1103
ISA1530AC1
B
L1105
MLF1608A2R7J
2.7uH
5%
C1161
C
6.8pF
50V
+5V
R1159
390
E
Q1108
ISA1530AC1
B
C
+5V
R1101
390
E
R1112
680
Q1102
ISA1530AC1
B
L1110
MLF1608A2R7J
C1104
2.7uH
5%
C
6.8pF
50V
+3.3V_TU
R1155
100
SDA1
R1150
100
SCL1
C1131
C1152
18pF
18pF
50V
50V
TU_SLEEP_MODE
ACTIVE HIGH
L1102
SAM2333
READY
IF_AGC
Place the Buffer close to Tuner
TUNER_SIF
C1183
0.1uF
16V
TUNER_IF_N
+3.3V_TU
C1185
C1180
68uF
0.1uF
10V
16V
FHD
C1168
0.1uF
16V
TUNER_CVBS
+5V
C1184
R1157
0.1uF
390
16V
TUNER_IF_P
E
Q1109
ISA1530AC1
B
C
+3.3V_TU_CE
READY
R1105
47K
+1.8V_TU_CE
+3.3V_TU_CE
+3.3V_TU_CE
VSS_1
1
VDD_1
2
VSS_2
3
CLK1
4
SCL1
DATA1
5
SDA1
+1.8V_TU_CE
IRQ
IC1100
6
CVDD_1
7
CE6355
VSS_3
8
RESET
9
/FE_RESET
R1103
SLEEP
0
10
STATUS
11
SADD4
4.7K
12
R1100
READY
VDD_2
13
VSS_4
14
SADD3
15
SADD2
16
+1.8V_TU_CE
R1104
10K
READY
R1109
100K
X1100
20.48MHz
C1122
C1127
27pF
27pF
50V
50V
08.10.06 CHANGE LOAD CAP 22pF -> 27pF
C1186
C1187
0.1uF
0.1uF
16V
16V
+3.3V_TU
16V
16V
16V
16V
0.1uF
0.1uF
0.1uF
0.1uF
C1105
C1107
C1111
C1113
+1.8V_TU_CE
+1.8V_TU
L1100
MLB-201209-0120P-N2
C1101
C1100
C1102
C1110
C1112
0.1uF
10uF
0.1uF
10uF
0.1uF
16V
6.3V
16V
6.3V
16V
MSD3368EV Platform
IF_AGC
C1140
0.1uF
R1118
16V
0
C1142
1000pF
R1119
50V
22K
+3.3V_TU_CE
MOVAL
48
MOSTRT
47
R1117
1K
VSS_9
46
+3.3V_TU_CE
VDD_4
45
SMTEST
44
GPP3
43
AGC1
42
AGC2/GPP2
41
+1.8V_TU_CE
VSS_8
40
CVDD_4
39
VSS_7
38
CVDD_3
37
R1115
DATA2/GPP1
36
10K
CLK2/GPP0
35
R1116
+3.3V_TU_CE
10K
RFLEV
34
VDD_3
33
C1128
0.1uF
50V
C1135
C1139
0.1uF
0.1uF
16V
16V
+3.3V_TU_CE
L1103
MLB-201209-0120P-N2
16V
16V
16V
16V
C1130
0.1uF
0.1uF
0.1uF
0.1uF
10uF
C1137
C1144
C1149
C1150
6.3V
C1125
C1143
C1114
C1132
C1145
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
16V
16V
16V
16V
16V
TUNER
10
10
LGE Internal Use Only
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