LG 37LV3500 Service Manual page 30

CN_2INPUT_H_LG3911
TU3701
TU3702
TDTJ-S001D TDFR-C036D
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
18 18
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]
1 NC_1
1
BST_CNTL NC_2
2
2 D6
+B
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)
8 NC(IF_TP)
8
SIF
SIF
9 9
NC
10 NC_3
10
VIDEO
11 VIDEO
11
GND GND
12 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 DIF_1
17 17
DIF_2
18 DIF_2
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
2
4
+B1[5V]
NC_2 3
5
RF_AGC
SCLT
6 4
MOPLL_AS
SDAT 5
7
SCL
NC_3 6
8
SIF SDA
9 7
NC_2
NC_4 8
10
SIF
VIDEO
11 9
NC_3
GND 10
12
VIDEO
+B2[1.2V] 11
13
+B3[3.3V] GND
14 12
+B2[1.2V]
RESET 13
15
+B3[3.3V]
IF/AGC
16 14
DIF_1[N] RESET
15
17
IF_AGC
D I F _ 2 [ P ] 16
18
DIF_1[N]
17
19 D I F _ 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
P u l l - u p c a n ' t b e a p p l i e d
because of MODEL_OPT_2
close to TUNER
OPT
R3762 0
CONTROL_ATTEN
close to TUNER
+5V_TU
R3705 0
C3701
RF_SW_OPT
C3728
0 . 1 u F
C3704
0 . 1 u F
C3703
16V
0 . 1 u F 16V
100pF
16V
OPT
50V
Q3704
2SC3052
R3707 0 OPT
OPT
C3706
0 . 1 u F
16V
close to TUNER
C3702
0 . 1 u F 16V
+3.3V_TU
+1.2V/+1.8V_TU
CN
C3708
C3707
C3739
0 . 1 u F
100pF
10uF
16V
FULL_NIM 50V
6.3V
C3737 C3738 C3705
100pF 0 . 1 u F 100uF
50V 16V 16V
c l o s e t o t h e t u n e r p i n , a d d , 0 9 0 2 9
FULL_NIM
R3702 100
R3701 100
c l o s e t o I F l i n e
FULL_NIM
HALF_NIM
R3760 0
R3761 0
HALF_NIM
C l o s e t o t h e t u n e r
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM_CHINA
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM
FULL_NIM_CHINA
C l o s e t o t h e C I S l o t
+5V_TU
C3709
0 . 0 1 u F
25V
BOOSTER_OPT
OPTION : RF AGC
C3731
10uF
10V
OPT
G P I O m u s t b e a d d e d .
C
R3754 TU_IIC_NON_ATSC_SANYO
B 10K
FE_AGC_SPEED_CTL +3.3V_TU
IF_AGC_SEL
R3740-*1
OPT
1K
E
TU_IIC_ATSC_SANYO
R3740
1.2K
33 R3735
TU_I2C_NON_FILTER
TU_I2C_NON_FILTER
C3713
33 R3736
C3743
18pF TU_I2C_NON_FILTER
20pF
50V
TU_I2C_NON_FILTER C3742
50V
C3711 20pF
TU_I2C_FILTER
18pF
50V
50V
TU_I2C_FILTER
C3711-*1 C3713-*1
20pF 20pF
+3.3V_TU
50V 50V
TU_I2C_FILTER TU_I2C_FILTER
TU_I2C_FILTER
TU_I2C_FILTER
R3735-*1 R3736-*1
R3733
R3732 100K
100
COIL COIL
TUNER_RESET
C3710
0 . 1 u F
16V
0
R3704
IF_AGC_MAIN
HALF_NIM
s h o u l d b e g u a r d e d b y g r o u n d
C3712
22pF
50V
FULL_NIM
IF_N_MSTAR
IF_P_MSTAR
1 . s h o u l d b e g u a r d e d b y g r o u n d
2 . N o v i a o n b o t h o f t h e m
3 . S i g n a l W i d t h > = 1 2 m i l s
S i g n a l t o S i g n a l W i d t h = 1 2 m i l s
G r o u n d W i d t h > = 2 4 m i l s
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]
R3728 FULL_NIM_BR
0 FE_TS_DATA[2]
TU3701-*2
TDFR-B036F
R3729
0
FE_TS_DATA[3]
1 RF_S/W_CNTL
BST_CNTL
2
+B1[5V]
3
R3726
0 FE_TS_DATA[4] NC_1[RF_AGC]
4
NC_2
5
SCLT
6
SDAT
R3721 7
0
FE_TS_DATA[5] 8 NC_3
SIF
9
NC_4
10
R3722 VIDEO
11
0 FE_TS_DATA[6] GND
12
+B2[1.2V]
13
+B3[3.3V]
14
R3723 15 RESET
0 FE_TS_DATA[7]
NC_5
16
SCL
17
SDA
18
ERR
19
SYNC
20
VALID
21
22 MCL
D0
23
D1
R3706 24
0
D2
25
D3
26
FULL_NIM_BR
D4
27
D5
28
29 D6
D7
30
31
SHIELD
BOOSTER : CHINA OPT
L3701 BOOSTER_OPT
BLM18PG121SN1D
BOOSTER_OPT
BOOSTER_OPT
R3734
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
T h e p u l l - u p / d o w n o f L N A 2 _ C T L
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
FULL_NIM
DEMOD_SCL
+3.3V_TU
DEMOD_SDA
C3714
22pF
50V
FULL_NIM
HALF_NIM_1.2V_DIODES
P l e a s e , c h e c k m u l t i I t e m ! 1 0 / 1 2
R3771
C3717 FULL_NIM_BCD
0 . 1 u F
16V
R3770
FULL_NIM_SEMTEK
R3769
+5V_Normal
FULL_NIM_BCD
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
20
VALID
21
MCL
22
D0
23 200mA
D1
24
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
31
SHIELD
+5V_TU
R3755
470 R3758
82
TU_SIF
E
B ISA1530AC1
R3753 Q3705
C
4.7K
TU_CVBS
DEMOD_RESET
T h i s w a s b e i n g a p p l i e d t o t h e o n l y c h i n a d e m o d ,
s o t h i s h a s t o b e d e l e t e d i n b o t h m a i n a n d I S D B s h e
HALF_NIM_1.2V_BCD
IC3703
R2
AZ1117BH-ADJTRE1 HALF_NIM
R3767
+1.2V/+1.8V_TU
10
INPUT ADJ/GND
3 1
2
IC3703-*1 HALF_NIM
OUTPUT
AP1117EG-13
R3768
1.2K
R1
IN OUT
ADJ/GND
HALF_NIM
R3766
1
1/10W
C3740 C3741
0 . 1 u F 10uF
IC3701 16V
HALF_NIM 10V
AP2132MP-2.5TRG1 HALF_NIM
[ E P ]
FULL_NIM_BCD +1.2V/+1.8V_TU
R3748-*1
10K
PG GND
10K
1 8
FULL_NIM_BCD
FULL_NIM_SEMTEK
R3764
R3748
10K EN ADJ
0
2 7
1/10W
5.1K
FULL_NIM
R1
VIN VOUT
3 6
10K
FULL_NIM FULL_NIM
VCTRL NC
4 5
C3729
C3730
0 . 1 u F
R3747
10uF
16V
9.1K 10V
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_Normal
+5V_TU
+3.3V_TU
S i z e c h a n g e S i z e c h a n g e
L3702
L3703
60mA
MLB-201209-0120P-N2 MLB-201209-0120P-N2
C3722
C3719 C3724 C3726
C3725
22uF C3723
22uF 0 . 1 u F 0 . 1 u F
0 . 1 u F
22uF
16V 16V
10V 16V
10V 16V
l o c a t i o n m o v e m e n t , 0 9 2 9
Add,0929
GP2R 20101023
TUNER_L 14
R3703
150
OPT
380mA
+3.3V_Norm
C3715
C3727
22uF
0 . 1 u F
10V
16V