LG 42LK450 Service Manual page 52

CN_2INPUT_H_LG3911
TU3701
TU3702
TDFR-C036D
TDTJ-S001D
DVB_1INPUT_H_LGIT close to TUNER
ANT_PWR[OPT] RF_S/W_CNTL
1 1
BST_CNTL BST_CNTL
2 2
+B +B1[+5V]
3 3
NC[RF_AGC] NC[RF_AGC]
4 4
AS NC_1
5 5
SCL SCLT
6 6
SDA SDAT
7 7
NC[IF_TP] NC_2
8 8
SIF SIF
9 9
NC NC_3
10 10
VIDEO VIDEO
11 11
GND GND
12 12
1.2V +B2[1.2V]
13 13
3.3V +B3[3.3V]
14 14
RESET RESET
15 15
IF_AGC_CNTL NC_4
16 16
DIF_1 SCL
17 17
DIF_2 SDA
R3701
18 18
FULL_NIM
ERR
19
19
SYNC
20
SHIELD
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
TUNER MULTI-OPTION 26
GP3_ATSC_1INPUT_H_SANYO
TU3702-*3 D4
UDA55AL
27
TU3702-*1
TDVJ-H101F
D5
28
ANT_PWR[OPT] NC_1
1
1
BST_CNTL
2 NC_2
2
+B D6
3 +B[+5V]
3
29
NC[RF_AGC] NC[RF_AGC]
4 4
AS
5 AS
5 D7
SCL
6 SCL
6
30
SDA SDA
7 7
31
NC(IF_TP) NC(IF_TP)
8
8
SIF
9 SIF
9
NC
10 NC_3
10
VIDEO VIDEO
11 11
GND
12 GND
12 SHIELD
1.2V
13 +1.2V
13
3.3V
+3.3V
14 14
RESET RESET
15 15
IF_AGC_CNTL
16 IF_AGC_CNTL
16
DIF_1
17 DIF_1
17
DIF_2 DIF_2
18 18
19
19
SHIELD
SHIELD
GP3_ATSC_1INPUT_H_LGIT
GP2R_AU_1INPUT_H_LGIT
TU3702-*4
RF_S/W_CTL TDTJ-S101D
1
BST_CTL
2
ANT_PWR
+B1[5V] 1
3
NC_1[RF_AGC] NC_1
4 2
NC_2 +B1[5V]
3
5
RF_AGC
SCLT 4
6
MOPLL_AS
SDAT 5
7
NC_3 SCL
8 6
SDA
SIF 7
9
NC_2
NC_4 8
10
SIF
VIDEO
11 9
GND NC_3
10
12
VIDEO
+B2[1.2V] 11
13
GND
+B3[3.3V] 12
14
RESET +B2[1.2V]
15 13
+B3[3.3V]
IF/AGC 14
16
RESET
DIF_1[N] 15
17
IF_AGC
DIF_2[P]
18 16
DIF_1[N]
17
19 DIF_2[P]
18
SHIELD
19
TU3702-*2 SHIELD
TDTR-T036F
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.
GP2R_LARGE_TUNER
RF_SWITCH_CTL
Pull-up can't be applied
because of MODEL_OPT_2
close to TUNER
OPT
R3762 0
CONTROL_ATTEN
+5V_TU
R3705 0
C3731
C3701
RF_SW_OPT C3728
10uF
0.1uF
C3704 0.1uF
C3703 10V
16V
16V
0.1uF OPT
100pF
16V
OPT
50V
C
Q3704 B
2SC3052
R3707 0 OPT
E
OPT
C3706
0.1uF
16V
close to TUNER
C3702
0.1uF 16V
+3.3V_TU
+1.2V/+1.8V_TU
CN
C3708
C3707
C3739
0.1uF
100pF
10uF
16V
FULL_NIM 50V
6.3V
C3737 C3738 C3705
100uF
100pF 0.1uF
16V
50V 16V
close to the tuner pin, add,09029
FULL_NIM
R3702 100
100
close to IF line
HALF_NIM
R3760 0
R3761 0
HALF_NIM
Close to the tuner
FULL_NIM R3724
R3730
FULL_NIM
R3731
FULL_NIM
FULL_NIM_CHINA
R3725
FULL_NIM
R3727
FULL_NIM
R3728
FULL_NIM
R3729
FULL_NIM
R3726
FULL_NIM R3721
FULL_NIM
R3722
FULL_NIM_CHINA
R3723
Close to the CI Slot
R3706
FULL_NIM_BR
+5V_TU
L3701
BOOSTER_OPT
BLM18PG121SN1D
BOOSTER_OPT
R3734
0
Q3701
BOOSTER_OPT
ISA1530AC1
E
B
C
BOOSTER_OPT
C3709
0.01uF
25V
BOOSTER_OPT
OPTION : RF AGC
GPIO must be added.
R3754 TU_IIC_NON_ATSC_SANYO TU_IIC_NON_ATSC_SANYO
10K
FE_AGC_SPEED_CTL +3.3V_TU
IF_AGC_SEL R3740-*1
OPT
1K
TU_IIC_ATSC_SANYO
R3740 TU_IIC_ATSC_SANYO
1.2K R3741
33 R3735
1.2K
TU_I2C_NON_FILTER
TU_I2C_NON_FILTER
C3713
33 R3736
C3743
18pF TU_I2C_NON_FILTER
20pF
TU_I2C_NON_FILTER 50V C3742
50V
C3711
20pF
TU_I2C_FILTER
18pF
50V
50V
TU_I2C_FILTER
C3711-*1 C3713-*1
+3.3V_TU 20pF 20pF
50V 50V
TU_I2C_FILTER TU_I2C_FILTER
TU_I2C_FILTER
TU_I2C_FILTER
R3733 R3735-*1 R3736-*1
R3732 100K
100
COIL COIL
TUNER_RESET
C3710
0.1uF
16V
R3742
0
R3704 4.7K
IF_AGC_MAIN
FULL_NIM
HALF_NIM
should be guarded by ground
C3712 C3714
22pF 22pF
50V
50V
FULL_NIM FULL_NIM
IF_N_MSTAR
IF_P_MSTAR
1. should be guarded by ground
2. No via on both of them
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
0
FE_TS_DATA[0-7]
FE_TS_SYNC
0
FE_TS_VAL_ERR
0
FE_TS_CLK
0
FE_TS_DATA[0]
0
FE_TS_DATA[1]
FULL_NIM_BR
0 FE_TS_DATA[2]
TU3701-*2
TDFR-B036F
0 FE_TS_DATA[3]
RF_S/W_CNTL
1
BST_CNTL
2
+B1[5V]
3
NC_1[RF_AGC]
0 FE_TS_DATA[4] 4
5 NC_2
SCLT
6
SDAT
7
0 NC_3
FE_TS_DATA[5] 8
SIF
9
NC_4
10
VIDEO
11
0
FE_TS_DATA[6] GND
12
13 +B2[1.2V]
+B3[3.3V]
14
RESET
0 15
FE_TS_DATA[7] NC_5
16
SCL
17
SDA
18
ERR
19
SYNC
20
21 VALID
MCL
22
D0
23
D1
24
0
D2
25
D3
26
D4
27
D5
28
29 D6
D7
30
31
SHIELD
BOOSTER : CHINA OPT
BOOSTER_OPT
R3743
10K
R3737
2.2K
BOOSTER_OPT
C
R3745
Q3702 B 10K
FE_BOOSTER_CTL
2SC3052 LNA2_CTL
The pull-up/down of LNA2_CTL
E
BOOSTER_OPT
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
R3753
4.7K
R3741-*1
1K
+5V_TU
TU_SCL
TU_SDA
R3751
R3752
220 220
TU_CVBS
E
R3749 0
B
R3750 Q3703
1K ISA1530AC1
C
OPT
+3.3V_TU
R3744
4.7K
FULL_NIM
DEMOD_SCL
+3.3V_TU
DEMOD_SDA
INPUT
IC3703-*1
AP1117EG-13
IN OUT
ADJ/GND
HALF_NIM_1.2V_DIODES
Please, check multi Item! 10/12
R3771 10K
C3717 FULL_NIM_BCD
0.1uF
16V
R3770 10K
FULL_NIM_SEMTEK
VIN
R3769 10K
VCTRL
+5V_Normal FULL_NIM_BCD
NC_1
VIN
NC_2
CN_2INPUT_H_ALTO
TU3701-*4
TDFR-C236D
RF_S/W_CNTL
1
BST_CNTL
2
+B1[+5V]
3
NC[RF_AGC]
4
NC_1
5
SCLT
6
SDAT
7
NC_2
8
SIF
9
NC_3
10
VIDEO
11
GND
12
+B2[1.2V]
13
+B3[3.3V]
14
RESET
15
NC_4
16
SCL
17
SDA
18
ERR
19
SYNC +5V_TU
20
VALID
21
MCL
22
D0
23 200mA
D1
24
D2
25
D3
26
D4 C3719
27
D5 22uF
28
D6
29 10V
D7
30
31
SHIELD
GP2R
TUNER_L
+5V_TU
R3755
470 R3758
82
TU_SIF
E
B ISA1530AC1
Q3705
C
DEMOD_RESET
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet.
HALF_NIM_1.2V_BCD
IC3703
R2
AZ1117BH-ADJTRE1 HALF_NIM
R3767
+1.2V/+1.8V_TU
10
ADJ/GND
3 1
2
HALF_NIM
OUTPUT
R3768
1.2K
R1
R3703
150
HALF_NIM
OPT
R3766
1
1/10W
C3740 C3741
0.1uF 10uF
IC3701 16V
10V
HALF_NIM
AP2132MP-2.5TRG1 HALF_NIM
[EP]
FULL_NIM_BCD
+1.2V/+1.8V_TU
R3748-*1
10K 380mA
PG GND
1 8
FULL_NIM_BCD
FULL_NIM_SEMTEK
R3764
R3748
EN ADJ
0
2 7
1/10W
5.1K
FULL_NIM
R1
VOUT
3 6
FULL_NIM FULL_NIM
NC
4 5 C3729
C3730
0.1uF
R3747
10uF
16V
9.1K 10V
1005
R2
IC3701-*1
SC4215ISTRT
Vo=0.8*(1+R1/R2)
GND
1 8
FULL_NIM_SEMTEK
EN ADJ
2 7
VO
3 6
NC_3
4 5
+5V_TUNER
+3.3V_Normal
+3.3V_TU
Size change Size change
L3702 L3703
60mA
MLB-201209-0120P-N2 MLB-201209-0120P-N2
C3722 C3715
C3724 C3726
C3725 C3727
22uF C3723 22uF
0.1uF 0.1uF 0.1uF
0.1uF
16V 16V 22uF 10V
16V 16V
10V 16V
location movement,0929
Add,0929
20101023
14