32LW470S (CHASSIS:LD12P) - LG TV Service Manual (repair manual). Page 33

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THERMAL
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.
FE_TS_DATA[1]
FE_TS_DATA[4]
FE_TS_DATA[3]
FE_TS_DATA[6]
FE_TS_DATA[7]
FE_TS_DATA[5]
FE_TS_DATA[2]
FE_TS_DATA[0]
C4408
33pF
OPT
TU_TS_VAL
+3.3V_TU
+3.3V_S2_TU
+5V_TU
R4421
2.2K
BOOSTER
C4413
33pF
S
C4409
0.1uF
S
C4414
0.1uF
16V
S
FE_TS_DATA[0-7]
C4401
0.1uF
16V
OPT
R4419
0
BOOSTER
SCL1_3.3V
TU_RESET
R4423
100K
R4431
1K
OPT
C4405
100pF
50V
S
+3.3V_TU
C4423
100pF
50V
TU_CVBS
R4401
51
S
TW9910_RESET
C4430
0.1uF
16V
R4436
200
C4410
0.1uF
16V
S
TU_TS_CLK
+3.3V_TU
+1.25V_TU
+5V_TU
L4406
BLM18PG121SN1D
BOOSTER
R4432
1K
OPT
C4418
10uF
10V
S
+1.8V_TU
R4429
0
OPT
C4406
100pF
50V
S
R4418
47
R4425
10K
BOOSTER
IC4404
NL17SZ08DFT2G
NONE_T2
3
GND
2
IN_A
4
OUT_Y
1
IN_B
5
VCC
R4403
100
S
R4430
0
C4419
0.1uF
16V
S
+2.5V_TU
+3.3V_TU
Q4402
MMBT3906(NXP) 
S
E
B
C
TU_TS_ERR
C4407
100pF
50V
S
Q4401
MMBT3906(NXP) 
BOOSTER
E
B
C
+2.5V_TU
TS_VAL_ERR
R4426
82
S
Q4404
MMBT3906(NXP) 
E
B
C
LNB_TX
R4439
0
NONE_T2
R4427
10K
BOOSTER
C4420
0.1uF
16V
R4435
200
Q4405
MMBT3906(NXP) 
E
B
C
C4425
0.01uF
50V
BOOSTER
R4422
4.7K
S
C4428
0.1uF
16V
NONE_S
TU_TS_ERR
TU_TS_VAL
TU_SIF
+1.25V_TU
RF_SWITCH_CTL_2
RF_BOOSTER_CTL
R4434
220
Q4403
2SC3052
E
B
C
SDA0_3.3V
R4428
0
NONE_S
+3.3V_S2_LNB
R4424
470
S
C4411
100pF
50V
Non_S
LNB_OUT
C4412
0.1uF
16V
S
TU_RESET_SUB
C4415
100pF
50V
S
+5V_TU
ATV_OUT
R4446
0
NONE_T2
R4402
75
OPT
C4429
10uF
10V
C4424
0.1uF
16V
S2_RESET
R4437
1
+5V_TU
C4402
18pF
50V
+3.3V_S2_DE
SDA1_3.3V
C4403
1000pF
50V
S
C4416
100pF
50V
R4433
220
R4420
100
R4406
2.2K
S
TU_TS_SYNC
+5V_TU
C4404
18pF
50V
R4445
0
T2
SCL0_3.3V
C4427
0.1uF
16V
C4417
0.1uF
16V
Non_S
R4407
0
BOOSTER
R4408
0
S
C4431
0.1uF
16V
OPT
AR4401
47
NON_S
AR4402
47
NON_S
AR4403
47
NON_S
C4439
0.1uF
16V
OPT
TS_VAL_ERR
NIM_TS_CLK
R4414
0
R4413
0
NIM_VAL_ERR
R4415
0
TU_TS_SYNC
TU_TS_CLK
NIM_TS_SYNC
R4438
11K
1%
R4416
20K
1%
+3.3V_TU
R4411
10K
IC4403
AP2132MP-2.5TRG1
EAN61387601
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
POWER_ON/OFF2_1
C4434
1uF
OPT
R4417
11K
1%
C4453
10uF
16V
C4432
10uF
16V
+1.25V_TU
R4412
10K
OPT
+5V_Normal
0.1uF
C4438
OPT
C4445
0.1uF
16V
L4408
MLB-201209-0120P-N2
S
+5V_TU
C4433
0.1uF
16V
C4452
0.1uF
S
C4441
0.1uF
16V
C4447
10uF
10V
S
L4404
MLB-201209-0120P-N2
S
C4443
0.1uF
OPT
C4440
22uF
16V
+3.3V_S2_DE
C4442
0.1uF
16V
C4444
22uF
16V
C4435
22uF
16V
C4437
0.1uF
16V
S
C4436
10uF
10V
S
+3.3V_Normal
C4448
10uF
10V
S
+3.3V_S2_TU
C4449
0.1uF
16V
L4402
MLB-201209-0120P-N2
R4410
1
S
+3.3V_TU
L4403
MLB-201209-0120P-N2
S
+3.3V_TU
+5V_Normal
C4450
0.1uF
S
C4451
0.1uF
S
+3.3V_TU
+1.8V_TU
+3.3V_S2_LNB
C4446
10uF
10V
S
IF_AGC
IF_P
RF_SWITCH_CTL
IF_N
R4447
0
S
R4448
0
S
L4409
BLM18PG121SN1D
S
C4454
10uF
16V
OPT
C4455
4700pF
50V
OPT
C4456
100uF
16V
OPT
L4401
MLB-201209-0120P-N2
C4457
10uF
16V
OPT
C4421
62pF
50V
Non_S
C4422
62pF
50V
Non_S
C4458
20pF
50V
Non_S
C4459
20pF
50V
Non_S
L4410
1uH
Non_S
L4411
Non_S
270nH
L4412
Non_S
270nH
L4411-*1
0
S
L4412-*1
0
S
C4460
10uF
6.3V
S
C4461
1000pF
50V
OPT
R4404
22
R4405
22
C4462
10uF
10V S
C4463
0.1uF
16V
OPT
D4401
20V
3.0SMCJ20A(suzhougrande)
S
IC4402
AZ1117BH-1.8TRE1
S
1
ADJ/GND
2
OUT
3
IN
AR4401-*1
33
S
AR4403-*1
33
S
AR4402-*1
33
S
R4418-*1
33
S
TU4401
TDFR-G136D
HORIZONTAL_T
1
NC_1
2
BST_CNTL
3
+B1[5V]
4
NC_2[RF_AGC]
5
NC_3
6
SCLT
7
SDAT
8
NC_4
9
SIF
10
NC_5
11
VIDEO
12
GND
13
+B2[1.2V]
14
+B3[3.3V]
15
RESET
16
+B4[2.5V]
17
SCL
18
SDA
19
ERR
20
SYNC
21
VALID
22
MCL
23
D0
24
D1
25
D2
26
D3
27
D4
28
D5
29
D6
30
D7
31
SHIELD
C4464
22uF
OPT
C4426
0.1uF
S
TU4401-*1
TDFR-G236D
HORIZONTAL_T2
1
NC_1
2
BST_CNTL
3
+B1[5V]
4
NC_2[RF_AGC]
5
NC_3
6
SCLT
7
SDAT
8
NC_4
9
SIF
10
NC_5
11
VIDEO
12
GND
13
+B2[1.2V]
14
+B3[3.3V]
15
RESET
16
+B4[2.5V]
17
SCL
18
SDA
19
ERR
20
SYNC
21
VALID
22
MCL
23
D0
24
D1
25
D2
26
D3
27
D4
28
D5
29
D6
30
D7
31
SHIELD
TU4402
TDFQ-G001D
HORIZONTAL_S
1
NC_1
2
NC_2
3
NC_3
4
S2_TU[3.3V]
5
NC_4
6
TU_SCL
7
TU_SDA
8
T_1.8V
9
T_SIF
10
NC_5
11
T_CVBS
12
GND_1
13
TD_1.2V
14
T_3.3
15
T_TU_RESET
16
NC_6
17
TD_SCL
18
TD_SDA
19
T/C/S2_ERROR
20
T/C/S2_SYNC
21
T/C/S2_VALID
22
T/C/S2_MCL
23
T/C/S2_D0
24
T/C/S2_D1
25
T/C/S2_D2
26
T/C/S2_D3
27
T/C/S2_D4
28
T/C/S2_D5
29
T/C/S2_D6
30
T/C/S2_D7
31
S2_1.25V
39
SHIELD
32
S2_RESET
33
S2_3.3V
34
S2_F22
35
S2_SCL
36
S2_SDA
37
GND_2
38
S2_LNB
R4449
2.2K
S
IC4401
AP2114H-2.5TRG1
GND
VOUT
VIN
T2_CN_F/NIM_BR: use EU_DVB-T2, China F/NIM, BRZIL F/NIM
H/NIM: use H/NIM(H/NIM, DVB-T/C/S2 combo Tuner)
F/NIM
SCART: use Scart Jack
close to Tuner
Surge protectioin
Non_S: not use DVB-T/C/S2 combo Tuner(use H/NIM and F/NIM)
* DVB-T/C/S2 combo Tuner: DVB-T/C is H/NIM, and DVB-S2 is F/NIM
DUAL COMPONENT
Close to the tuner
close to TUNER
Non_S
TC_F/NIM
Option Table
SCART
Non_S
H/NIM & F/NIM & T/C/S2 Combo Tuner
F/NIM: use F/NIM(EU_T/C, EU_DVB-T2, China)
(Eu,Aisa)
RF_SW_CTL: use RF_SWITCH_CTL
H/NIM
DVB-T/C/S2
CN : use China F/NIM
BOOSTER
H/NIM
SCART
ERROR & VALID PIN 
IC4401
EU_BR_F/NIM
H/NIM
F/NIM_T/C
close to TUNER
close to TUNER
TC_F/NIM: use EU_DVB-T/C F/NIM
close to Tuner
Close to Tuner #38 pin
(EU)
EU_BR_F/NIM: use EU_F/NIM and Brazil F/NIM
<EU, China>
close to TUNER
S: use DVB-T/C/S2 combo Tuner
EU_F/NIM
BOOSTER
BOOSTER: use BOOSTER_CTL
SCART
S
OPTION:SCART
RF_SW_CTL
EU_F/NIM: use EU_F/NIM
1ST : T-TJ3940S_XX, 2ND : T-AP2114H_2.5TRG1
BCM35230
LV7 EU TUNER
44
50
Tuner to CI Slot
Vout=0.6*(1+R1/R2)
R2
+1.25V_TU (EU)
R1
Max 1.5A
2A
Max 217mA
close to TUNER
Display
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