LG 22LV2500 Service Manual page 26

GP4R_GLOBAL_TUNER_BLOCK
TU3702 TU3701
TDTJ-S001D TDFR-C036D
DVB_1INPUT_H_LGIT CN_2INPUT_H_LG3911
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
18 18
ERR
19
19
SYNC
20
SHIELD
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
26
TUNER MULTI-OPTION D4
27
D5
28
TU3702-*4 D6
TDTJ-S101D
29
RF_S/W_CTL
1
ANT_PWR
BST_CTL 1
2 D7
NC_1
+B1[5V] 2
3 30
+B1[5V]
3
NC_1[RF_AGC]
4 31
RF_AGC
NC_2 4
5
MOPLL_AS
SCLT 5
6
SCL
SDAT 6
7
SDA
NC_3 7
8
NC_2
SIF 8
9 SHIELD
SIF
NC_4 9
10
NC_3
VIDEO 10
11
VIDEO
GND 11
12 GND
+B2[1.2V] 12
13
+B2[1.2V]
+B3[3.3V] 13
14
+B3[3.3V]
RESET 14
15
RESET
IF/AGC 15
16
IF_AGC
DIF_1[N] 16
17
DIF_1[N]
17
DIF_2[P]
18
DIF_2[P]
18
19
19
SHIELD
SHIELD
TU3702-*2
TDTR-T036F
TU3702-*3
UDA55AL
TU3702-*1
TDVJ-H101F
ANT_PWR[OPT] NC_1
1 1
BST_CNTL NC_2
2 2
+B +B[+5V]
3 3
NC[RF_AGC] NC[RF_AGC]
4 4
AS AS
5 5
SCL SCL
6 6
SDA SDA
7 7
NC(IF_TP) NC(IF_TP)
8 8
SIF SIF
9 9
NC NC_3
10 10
VIDEO VIDEO
11 11
GND GND
12 12
1.2V +1.2V
13 13
3.3V +3.3V
14 14
RESET RESET
15 15
IF_AGC_CNTL IF_AGC_CNTL
16 16
DIF_1 DIF_1
17 17
DIF_2 DIF_2
18 18
19 19
SHIELD SHIELD
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.
RF_SWITCH_CTL
Pull-up can't be applied
because of MODEL_OPT_2
+5V_TU
close to TUNER
R3705 0
C3701
RF_SW_OPT C3728
0.1uF
C3704 0.1uF
C3703
16V
16V
0.1uF
100pF
16V
OPT
50V
Q3704
2SC3052
R3707 0 OPT
OPT
C3706
0.1uF
16V
C3702 close to TUNER
0.1uF 16V
+3.3V_TU
+1.2V/+1.8V_TU C3708
CN C3707
0.1uF
100pF
C3739
16V
50V
10uF
FULL_NIM
6.3V
C3737 C3738
C3705
100pF 0.1uF 100uF
50V 16V 16V
close to the tuner pin, add,09029
FULL_NIM
R3702 100
R3701 100
close to IF line
FULL_NIM
HALF_NIM
R3760 0
R3761 0
HALF_NIM
Close to the tuner
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM_CHINA
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM_CHINA
Close to the CI Slot
FULL_NIM_BR
+5V_TU
C3709
0.01uF
25V
BOOSTER_OPT
GPIO must be added.
OPTION : RF AGC
C3731
10uF
10V
OPT
TU_IIC_NON_ATSC_SANYO
C
R3754
B 10K
FE_AGC_SPEED_CTL +3.3V_TU
R3740-*1
IF_AGC_SEL
1K
OPT
E
TU_IIC_ATSC_SANYO
R3740
1.2K
33
R3735
TU_I2C_NON_FILTER
33 R3736
TU_I2C_NON_FILTER TU_I2C_NON_FILTER
C3713
C3711
C3742
18pF
TU_I2C_NON_FILTER C3743
18pF 20pF
50V
50V 50V 20pF
50V
TU_I2C_FILTER TU_I2C_FILTER
C3711-*1
C3713-*1
+3.3V_TU
20pF 20pF
50V 50V
TU_I2C_FILTER TU_I2C_FILTER
R3733 TU_I2C_FILTER
TU_I2C_FILTER
R3732 100K
R3736-*1
100 R3735-*1
TUNER_RESET
C3710 MLG1005SR27JT
MLG1005SR27JT
0.1uF
16V
R3704 100
IF_AGC_MAIN
HALF_NIM
should be guarded by ground
C3716
0.1uF
16V
C3712
22pF
50V
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
R3724
0
FE_TS_SYNC FE_TS_DATA[0-7]
R3730
0
FE_TS_VAL_ERR
R3731
0
FE_TS_CLK
R3725
0
FE_TS_DATA[0]
R3727
0
FE_TS_DATA[1]
FULL_NIM_BR
TU3701-*2
R3728
0 TDFR-B036F
FE_TS_DATA[2]
RF_S/W_CNTL
1
2 BST_CNTL
R3729
0 +B1[5V]
FE_TS_DATA[3] 3
NC_1[RF_AGC]
4
5 NC_2
SCLT
R3726 6
0 FE_TS_DATA[4]
SDAT
7
NC_3
8
SIF
9
R3721 NC_4
0 10
FE_TS_DATA[5]
VIDEO
11
GND
12
+B2[1.2V]
13
R3722
0 +B3[3.3V]
FE_TS_DATA[6] 14
RESET
15
NC_5
16
SCL
R3723 17
SDA
0 FE_TS_DATA[7] 18
ERR
19
SYNC
20
VALID
21
MCL
22
D0
23
D1
24
D2
25
R3706 D3
0 26
D4
27
D5
28
D6
29
30 D7
31
SHIELD
BOOSTER : CHINA OPT
L3701
BOOSTER_OPT
BLM18PG121SN1D
BOOSTER_OPT
R3734 BOOSTER_OPT
R3743
0
10K
Q3701
BOOSTER_OPT
ISA1530AC1
E
R3737
2.2K
B
BOOSTER_OPT
C
R3745
C
BOOSTER_OPT
10K
Q3702 B 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
TU_IIC_NON_ATSC_SANYO
+3.3V_TU +5V_TU
R3741-*1
1K
TU_IIC_ATSC_SANYO +3.3V_BUFFER +5V_BUFFER
R3774 R3775
R3741
0 0
1.2K
TU_SCL
TU_SDA R3751
R3752
220
220
BUFFER
BUFFER
NON_BUFFER
R3773 0
BUFFER E
R3749 0
BUFFER
R3750 B Q3703
1K ISA1530AC1
C
OPT
+3.3V_TU
R3742
R3744
4.7K
4.7K
FULL_NIM
FULL_NIM
DEMOD_SCL
IC3703-*2
AZ1117BH-1.8TRE1
DEMOD_SDA
IN
C3714
3
22pF
1
50V
FULL_NIM
ADJ/GND
HALF_NIM_1.8V
+3.3V_TU
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
CN_2INPUT_H_ALTO
0.1uF
TU3701-*4
16V R3770 10K
TDFR-C236D
FULL_NIM_SEMTEK
RF_S/W_CNTL
1
BST_CNTL
2
+B1[+5V]
3
NC[RF_AGC]
4 R3769 10K
NC_1
5
SCLT +5V_Normal
6 FULL_NIM_BCD
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
20
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
31
SHIELD
+5V_TU
Size change,0929
L3702
MLB-201209-0120P-N2
+5V_TUNER
200mA
C3722
C3719 C3724
22uF 0.1uF 22uF
10V 16V
16V
+5V_TUNER +5V_TUNER +5V_TUNER
location movement,0929
+3.3V_TU +5V_TU
+3.3V_BUFFER +5V_BUFFER
R3776 R3777
0 0
R3755
BUFFER
470
NON_BUFFER R3758
R3772 0 82
TU_SIF
E
BUFFER
ISA1530AC1
B
Q3705
C
R3753 BUFFER
4.7K
TU_CVBS
DEMOD_RESET
This was being applied to the only china demod,
so this has to be deleted in both main and ISDB sheet.
OUT
HALF_NIM_1.8V
2
R3767-*1
0
HALF_NIM_1.2V_BCD
IC3703
R2
AZ1117BH-ADJTRE1
HALF_NIM_1.2V
R3767 +1.2V/+1.8V_TU
10
INPUT ADJ/GND
3 1
2
HALF_NIM_1.2V
OUTPUT
R3768
1.2K
R1
HALF_NIM
R3766 R3703
1
1/10W
C3740 C3741
0.1uF
10uF
IC3701 16V
HALF_NIM
10V
AP2132MP-2.5TRG1 HALF_NIM
[EP]
FULL_NIM_BCD
+1.2V/+1.8V_TU
add,0929
R3748-*1
10K 380mA
PG GND
1 8
FULL_NIM_BCD
FULL_NIM_SEMTEK
R3764
R3748
EN ADJ
2 7 0
1/10W
5.1K
FULL_NIM
R1
VIN VOUT
3 6
VCTRL NC
4 5
C3729
C3730
0.1uF
R3747
16V 10uF
9.1K 10V
FULL_NIM
FULL_NIM
1005
R2
IC3701-*1
SC4215ISTRT
Vo=0.8*(1+R1/R2)
NC_1 GND
1 8
FULL_NIM_SEMTEK
EN ADJ
2 7
VIN VO
3 6
NC_2 NC_3
4 5
+5V_TUNER +3.3V_TU +3.3V_Normal
Size change,0929
L3703
MLB-201209-0120P-N2
60mA
C3726 C3723 C3725 C3715 C3727
0.1uF 22uF 0.1uF 22uF 0.1uF
16V 10V 16V 10V 16V
+5V_TUNER
GP3_S7LR 20110511
TUNER_L 14
150
OPT