LG 22LD350 Service Manual page 19

LGIT CAN NIM_H/N TUNER for EU & CHINA
TU3701
TU3702
TDFR-C035D
TDTJ-S001D
close to TUNER
EU_TUNER CN_HORIZONTAL_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 R3702
DIF_2 SDA
18 18 R3701
ERR
19
19
SYNC
20
SHIELD
VALID
21
MCL
22
D0
23
D1
24
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
31
CN_VERTICAL_LG3911
TU3701-*1
SHIELD
TDFR-C055D
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
D1
24
D2
25
D3
26
D4
27
D5
28
D6
29
D7
30
31
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
CHINA_OPT
C3728 10uF
0.1uF
C3704
0.1uF 10V
C3703
16V
0.1uF 16V
100pF OPT
16V OPT
50V C
Q3704 B
2SC3052
R3707 0 OPT
E
OPT
close to TUNER
C3702
0.1uF 16V
+3.3V_TU
+1.2V_TU
C3708
C3737 C3738 C7934
C3707
100pF 0.1uF 100uF 0.1uF
100pF
16V
50V 16V 16V
50V
CHINA_OPT
0
EU_OPT
R3704
0 CHINA_OPT
0 CHINA_OPT
close to IF line
EU_OPT
R3760 0
R3761 0
EU_OPT
Close to the tuner
CHINA_OPT R3724
CHINA_OPT R3730
CHINA_OPT R3731
CHINA_OPT R3725
CHINA_OPT R3727
CHINA_OPT R3728
CHINA_OPT R3729
CHINA_OPT R3726
CHINA_OPT R3721
CHINA_OPT R3722
CHINA_OPT R3723
Close to the CI Slot
+5V_TU
L3701 CHINA_OPT
BLM18PG121SN1D
R3734
0
Q3701
ISA1530AC1
E
B
C
CHINA_OPT
C3709
0.01uF
25V
CHINA_OPT
OPTION : RF AGC
R3754
10K
FE_AGC_SPEED_CTL +3.3V_TU
GPIO must be added.
IF_AGC_SEL
OPT
R3740
1.2K R3741
33 R3735
1.2K
33 R3736
C3713
C3711
18pF
18pF
50V
50V
+3.3V_TU
R3733
R3732 100K
100 should be guarded by ground
TUNER_RESET
C3710
0.1uF
16V
R3742
4.7K
CHINA_OPT
R3738 100
CHINA_OPT
R3739 100
CHINA_OPT
C3712 C3714
22pF
22pF
50V
50V
CHINA_OPT CHINA_OPT
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]
0 FE_TS_DATA[2]
0 FE_TS_DATA[3]
0 FE_TS_DATA[4]
0
FE_TS_DATA[5]
0
FE_TS_DATA[6]
0
FE_TS_DATA[7]
CHINA_OPT
R3743
10K
CHINA_OPT
R3737
2.2K
CHINA_OPT
C
R3745
Q3702 B 10K
FE_BOOSTER_CTL
2SC3052
LNA2_CTL
The pull-up/down of LNA2_CTL
E
CHINA_OPT
is depended on MODLE_OPT_1.
GPIO must be added for FE_BOOSTER_CTL
+5V_TU
TU_SCL
090916 de-rating solution
TU_SDA
R3751 R3752
220
220
E
R3749 0
R3750 B Q3703
1K ISA1530AC1
C
OPT
IF_AGC_MAIN
+3.3V_TU
R3744
4.7K
CHINA_OPT
DEMOD_SCL
DEMOD_RESET
DEMOD_SDA
C3716
C3715
22pF 22pF
50V
50V
OPT
OPT
SEMTEK VOUT : 1.248V
BCD VOUT : 1.215V
IC3701
AP2132MP-2.5TRG1 [EP]
+3.3V_TU
R3708
10K
BCD 1 8
PG GND
SEMTEK
R3709
10K SEMTEK
2 7
ADJ
EN
SEMTEK
3 6
R3710
VOUT
10K BCD VIN BCD
C3732
SEMTEK
10uF C3717 4 5
OPT
0.1uF
10V NC
C3734 VCTRL
0.1uF
+5V_Normal
OPT
SEMTEK:Vout=0.8*(1+R1/R2)
C3733
0.1uF
BCD:Vout=0.6*(1+R1/R2)
+5V_General
+5V_TU
L3702
200mA
60mA
BLM18PG121SN1D
C3722 C3724 C3726
0.1uF
22uF 0.1uF
16V
16V 16V
GP2_Saturn7
EU CAN TUNER
+5V_TU
090916 de-rating solution
R3755
470 R3758
82
TU_SIF
E
B ISA1530AC1
R3753 Q3705
C
4.7K
TU_CVBS
IC3701-*1
SC4215ISTRT
+1.2V_TU
1 8
R3747-*1
R3747
39K
BCD
9.1K R2 GND
1% NC_1
5%
SEMTEK
2 7
R3748-*1
R3748
20K
5.1K BCD ADJ
EN
5% R1 1%
3 6
R3756
R3756-*1
VIN VO
0 BCD
20K
5%
C3729 C3730
1%
4 5
10uF
0.1uF NC_2 NC_3
10V
+3.3V_Normal
+3.3V_TU
L3703
BLM18PG121SN1D
C3727
C3723 C3725
0.1uF
0.1uF
10uF
16V
16V
16V
VER 2.0
27