LG 43LX310C Service Manual page 28

SCA , USA , KOREA LITE MODEL TUNER
TU9101
TDJH-H301F
TU_ATSC
+3.3V
1
NC_1
2
DIF_AGC
3
SCL_RF
4
SDA_RF
5
DIF[P]
6
DIF[N]
7
SIF
8
CVBS
9
A1 B1
A1 B1
47
SHIELD
TU9101-*1
TDJH-G301D
TU_AJ_T/C
+3.3V
1
NC_1
2
IF_AGC
3
SCL_RF
4
SDA_RF
5
IF[P]
6
IF[N]
7
SIF
8
CVBS
9
A1 B1
A1 B1
47
SHIELD
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright 2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
TU9100
TDJK-T301F
NON_DVB_T2
+3.3V
1
NC
2
DIF_AGC
3
SCL_RF
4
SDA_RF
5
HALF_NIM/EU_NON_T2
DIF[P]
R9104
6 10
DIF[N]
HALF_NIM/EU_NON_T2
7
R9105
SIF
10
Close to the tuner
8
CVBS
9
HALF_NIM/IF_NON_FILTER_KR
A1 B1
R9104-*1
A1 B1 0
47
HALF_NIM/IF_NON_FILTER_KR
R9105-*1
0
SHIELD
GND seperation
TU_GND_A
C9101
TU_GND_B 1000pF
C9100
630V
1000pF
OPT
630V
TU_GND_B
OPT Close to Tuner
R9108
C9106
0
0.1uF 16V
TU_BUFFER
R9109 TU_BUFFER
0
+3.3V_TU +3.3V_Normal
L9100
UBW2012-121F
C9102 C9103 C9104 C9105
22uF 0.1uF 22uF 0.1uF
10V 16V 10V 16V
TU_3.3V_NON_FILTER
L9101-*1
+3.3V_TU
0
1/8W
5%
TU_3.3V_FILTER
L9101
UBW2012-121F
C9111
C9108
100pF 0.1uF
16V
50V
HALF_NIM/EU_NON_T2
should be guarded by ground
R9110
100
IF_AGC_MAIN
C9107
0.1uF
16V
R9111
HALF_NIM/EU_NON_T2
33
Close to Tuner R9112
C9112 C9113
18pF 18pF
IF_P_MSTAR 50V 50V
IF_N_MSTAR
OPT OPT
C9109 C9110
5pF 5pF
50V 50V
TU_BUFFER
L14_S7LR(M1A)
TUNER_CSA_US
+3.3V_TU
TU_IIC_ATSC_1.8K TU_IIC_ATSC_1.8K
R9114-*1 R9116-*1
1.8K 1.8K
R9114 R9116
1K 1K
TU_IIC_NON_ATSC_1K TU_IIC_NON_ATSC_1K
TU_SCL
33
TU_SDA
OPT OPT
C9114 C9115
20pF 20pF
50V 50V
OPT
R9117
0
+3.3V_TU
TU_BUFFER
R9115 TU_BUFFER
470 R9118
82
TU_SIF
E
Q9100
MMBT3906(NXP)
B
TU_BUFFER
R9113
C
4.7K
TU_BUFFER
+3.3V_TU
TU_BUFFER TU_BUFFER
R9903 R9904
220 220
OPT
R9900
0
TU_CVBS
E
R9901
Q9900
0
MMBT3906(NXP)
B
OPT TU_BUFFER
R9902
C
1K
2014.07.22
14
LGE Internal Use Only