LG 26LV2500 Service Manual page 35

GP2R_GLOBAL_TUNER_BLOCK for Small Model
CN_2INPUT_H_LG3911
TU3701
TU3702
TDFR-C036D
TDTJ-S001D
close to TUNER
DVB_1INPUT_H_LGIT
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
ERR
19
19
SYNC
20
SHIELD
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
TUNER MULTI-OPTION 26
D4
27
D5
TU3702-*3
28
UDA55AL
D6
29
RF_S/W_CTL
1
NC_1
BST_CTL 1
D7
2 NC_2
2
+B1[5V]
3 +B[+5V] 30
3
NC_1[RF_AGC]
4 31
NC[RF_AGC]
NC_2 4
5
AS
5
SCLT
6 SCL
6
SDAT
7 SDA
NC_3 7
8
NC(IF_TP)
SIF 8
9 SHIELD
SIF
9
NC_4
10 NC_3
10
VIDEO
11
VIDEO
GND 11
12
GND
12
+B2[1.2V]
13 +1.2V
13
+B3[3.3V]
14 +3.3V
RESET 14
15
RESET
IF/AGC 15
16
IF_AGC_CNTL
16
DIF_1[N]
17 DIF_1
17
DIF_2[P]
18
DIF_2
18
19
19
SHIELD
SHIELD
TU3702-*2
TDTR-T036F
TU3702-*1
TDVJ-H101F TU3702-*4
TDTJ-S101D
ANT_PWR[OPT]
1
ANT_PWR
BST_CNTL 1
2
+B NC_1
3 2
NC[RF_AGC] +B1[5V]
3
4
RF_AGC
AS 4
5
MOPLL_AS
SCL
6 5
SDA SCL
7 6
SDA
NC(IF_TP) 7
8
NC_2
SIF 8
9
NC SIF
10 9
VIDEO NC_3
11 10
VIDEO
GND 11
12
GND
1.2V
13 12
3.3V +B2[1.2V]
14 13
+B3[3.3V]
RESET 14
15
RESET
IF_AGC_CNTL 15
16
DIF_1 IF_AGC
17 16
DIF_2 DIF_1[N]
18 17
DIF_2[P]
18
19
SHIELD 19
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
close to TUNER
OPT
R3762 0
CONTROL_ATTEN
+5V_TU
R3705 0
C3731
C3701
RF_SW_OPT C3728
10uF
0.1uF
C3704 0.1uF
10V
16V C3703
16V
0.1uF
100pF
16V
OPT
50V
C
Q3704
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 C3708
CN C3707
0.1uF
100pF
C3739
16V
50V
10uF
FULL_NIM
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
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
R3721
FULL_NIM
FULL_NIM R3722
FULL_NIM_CHINA
R3723
Close to the CI Slot
FULL_NIM_BR R3706
All manuals and user guides at all-guides.com
+5V_TU
L3701
BOOSTER_OPT
R3734
0
Q3701
ISA1530AC1
E
C
BOOSTER_OPT
C3709
0.01uF
25V
BOOSTER_OPT
GPIO must be added.
OPTION : RF AGC
OPT
TU_IIC_NON_ATSC_SANYO
R3754
B 10K
FE_AGC_SPEED_CTL +3.3V_TU
R3740-*1
IF_AGC_SEL
OPT 1K
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 20pF
50V 50V
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
0
R3704
IF_AGC_MAIN
HALF_NIM FULL_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
R3724
0
FE_TS_DATA[0-7]
FE_TS_SYNC
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 FE_TS_DATA[2] TDFR-B036F
RF_S/W_CNTL
1
BST_CNTL
2
R3729
0 FE_TS_DATA[3] 3 +B1[5V]
NC_1[RF_AGC]
4
NC_2
5
SCLT
R3726 6
0 FE_TS_DATA[4] SDAT
7
NC_3
8
SIF
9
NC_4
0 10
FE_TS_DATA[5]
11 VIDEO
GND
12
+B2[1.2V]
13
+B3[3.3V]
0 14
FE_TS_DATA[6]
RESET
15
NC_5
16
SCL
17
0 SDA
FE_TS_DATA[7] 18
19 ERR
SYNC
20
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
0 26
27 D4
D5
28
D6
29
D7
30
31
SHIELD
BOOSTER : CHINA OPT
BOOSTER_OPT
BLM18PG121SN1D
BOOSTER_OPT
R3743
10K
BOOSTER_OPT
R3737
2.2K
B
BOOSTER_OPT
C
R3745
Q3702 10K
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
R3741-*1
1K
TU_IIC_ATSC_SANYO
R3741
1.2K +5V_TU
TU_SCL
TU_SDA
R3751
R3752
220 220
E
R3749 0
R3750 B Q3703
1K ISA1530AC1
C
OPT
+3.3V_TU
R3742 R3744
4.7K
4.7K
FULL_NIM
DEMOD_SCL
DEMOD_SDA
+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 VCTRL
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
200mA
MLB-201209-0120P-N2
C3719
22uF
10V
TUNER_SMALL
+5V_TU
R3755
470 R3758
82
TU_SIF
E
B ISA1530AC1
R3753 Q3705
C
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.
HALF_NIM_1.2V_BCD
IC3703
R2
AZ1117BH-ADJTRE1 HALF_NIM
R3767 +1.2V/+1.8V_TU
10
INPUT ADJ/GND
3 1
2
HALF_NIM
OUTPUT
R3768
1.2K
R1
HALF_NIM
R3766 R3703
1
150
1/10W
OPT
C3740 C3741
0.1uF
10uF
16V
IC3701
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
EN ADJ R3748
0
2 7
1/10W
5.1K
FULL_NIM
R1
VIN VOUT
3 6
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_General
+3.3V_Normal
+3.3V_TU
Size change,0929
L3702 L3703
60mA
MLB-201209-0120P-N2
C3722
C3724 C3726
C3725 C3715 C3727
22uF C3723
0.1uF 0.1uF 0.1uF
0.1uF
16V 22uF 22uF
16V 16V
16V
10V 16V 10V
location movement,0929
Add,0929
GP2R 20101023
25