DOWNLOAD LG 47LK950S (CHASSIS:LD12P) Service Manual ↓ Size: 5 MB | Pages: 43 in PDF or view online for FREE

Model
47LK950S (CHASSIS:LD12P)
Pages
43
Size
5 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
47lk950s-chassis-ld12p.pdf
Date

LG 47LK950S (CHASSIS:LD12P) Service Manual ▷ View online

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
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.
Q4508
2SC3052
OPT
E
B
C
TP4501
D4502
5.5V
C4519
33pF
R4508
75
1%
SC_DET/COMP2_DET
C4514
560pF
50V
R4528
2K
2SC3052
Q4503
R4504
5.6K
SC_B/COMP2_Pb
C4532
180pF
50V
OPT
C4510
10uF
16V
SCART1_Lout_P
R4513
10K
DTV/MNT_R_OUT
L4504
BLM18PG121SN1D
R4516
33K
SCART1_Lout_N
SCART_MUTE
DTV/MNT_V_OUT
SC/COMP2_R_IN
IC4502
NLASB3157DFT2G
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
C4528
0.1uF
16V
R4515
1K
R4538
10K
OPT
L
4
5
0
1
B
L
M
1
8
P
G
1
2
1
S
N
1
D
R4507
75
1%
REC_8
+12V
C4513
100uF
16V
+3.5V_ST
C4505
560pF
50V
R4517
33K
R4502
5.6K
R4519
10K
INCM_VID_SC
R4503
5.6K
SC_RE1
C4523
47uF
16V
SC_G/COMP2_Y
R4511
75
1%
D4512
30V
OPT
SC_R/COMP2_Pr
SCART1_Rout_N
R4529
2K
D4509
5.6V
OPT
R4526
47K
+12V
L4505
BLM18PG121SN1D
D4504
5.5V
SCART1_Rout_P
R4531
10K
C4507
47pF
50V
D4505
5.5V
DTV/MNT_R_OUT
C4531
180pF
50V
OPT
R4510
470K
C4501
0.1uF
50V
R4536
1K
OPT
C4520
33pF
DTV/MNT_L_OUT
SC/COMP2_L_IN
DTV/MNT_L_OUT
Q4502
2SC3052
E
B
C
REC_8
Q4501
MMBT3906(NXP) 
E
B
C
SC_CVBS_IN
C4515
560pF
50V
DTV_ATV_SELECT
SC_ID
Q4505
RT1P141C-T112
1
2
3
D4506
30V
OPT
ATV_OUT
Q4506
2SC3052
OPT
E
B
C
R4537
1K
OPT
R4505
75
1%
R4514
1K
D4503
5.5V
R4535
4.7K
OPT
C4508
10uF
16V
C4526
0.1uF
50V
Q4507
2SC3052
OPT
E
B
C
D4501
5.5V
D4511
5.6V
R4532
36
C4506
560pF
50V
2SC3052
Q4504
+12V
C4521
4700pF
C4511
6800pF
50V
C4518
0.1uF
L4506
C4517
1000pF
50V
D4508
5.6V
OPT
R4520
390
R4523
180
R4501
5.6K
R4509
470K
JK4501
PSC008-01
1
AUDIO_R_OUT
2
AUDIO_R_IN
3
AUDIO_L_OUT
4
AUDIO_GND
5
B_GND
6
AUDIO_L_IN
7
B_OUT
8
ID
9
G_GND
10
D2B_IN
11
G_OUT
12
D2B_OUT
13
R_GND
14
RGB_GND
15
R_OUT
16
RGB_IO
17
SYNC_GND1
18
SYNC_GND2
19
SYNC_OUT
20
SYNC_IN
21
COM_GND
22
AV_DET
D4507
5.6V
OPT
IC4501
LM324D
3
IN1+
2
IN1-
4
VCC
1
OUT1
6
IN2-
5
IN2+
7
OUT2
8
OUT3
9
IN3-
10
IN3+
11
VEE/GND
12
IN4+
13
IN4-
14
OUT4
R4533
75
1%
+3.3V_Normal
DTV/MNT_R_OUT
R4521
390
R4541
12K
OPT
R4506
75
1%
SC_RE2
R4518
10K
C4525
0.1uF
50V
R4527
15K
C4512
6800pF
50V
C4522
4700pF
DTV/MNT_L_OUT
+5V_Normal
D4510
5.6V
OPT
R4524
470
R4530
10K
R4525
1K
C4524
1uF
10V
C4516
1000pF
50V
D4513
30V
BAT54_SUZHO
OPT
R4534
10K
R4545
10K
R4547
10K
R4546
1K
Q4509
2SC3052
E
B
C
+3.3V_Normal
SC_FB
+3.3V_Normal
Q4510
2SC3052
E
B
C
C4535
27pF
50V
L4509
CM2012FR27KT
C4537
27pF
50V
C4533
27pF
50V
L4510
CM2012FR27KT
C4536
27pF
50V
L4508
CM2012FR27KT
C4534
27pF
50V
C4538
27pF
50V
R4548
1K
R4549
0
R4550
10
C4539
100pF
50V
R4522
9.1K
C4540
1uF
C4541
1uF
R4551
22
R4552
22
R4512
75
1%
R4553
0
1/10W
5%
CLOSE TO SOC
Selece = High ==> A = B1
[SCART AUDIO MUTE]
1ST : EBK61012701, 2ND : EBK58172301
CLOSE TO soc
Full Scart
CLOSE TO JACK
Q4502,Q4503
Q4504,Q4506
Q4507,Q4508
DUAL COMPONENT
Rf
D4513
[SCART PIN 8]
1ST : 0TRIH80004A, 2ND : EBK61012501, 3RD : 0TR102009AM
Gain=1+Rf/Rg
1ST : T-BAT54_SUZHO, 2ND : 0DSON00138A
Selece = Low  ==> A = B0
Q4501
Rg
Q4505
1ST : 0TRIY80001A  2ND : 0TR387500AA
AUD_OUT >> EU/CHINA_HOTEL_OPT
CLOSE TO SOC
CLOSE TO SOC
BCM35230
LV7 EU SCART
45
50
FOR EMI
CLOSE TO JUNCTION
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.
D4604
100V
1N4148W
OPT
Q4601
2SC3052
E
B
C
C4624
0.01uF
50V
OPT
0.1uF
C4620
50V
SPK_L-
AUD_LRCK
C4616
22000pF
50V
L4601
MLB-201209-0120P-N2
R4614
12
C4615
1000pF
50V
0.1uF
C4619
50V
SPK_L-
C4612
0.1uF
16V
0.1uF
C4601
50V
C4610
10uF
10V
OPT
R4618
4.7K
R4615
12
C4611
10uF
10V
OPT
R4606
100
SPK_R-
C4623
10uF
35V
R4609
12
+24V
R4619
4.7K
C4604
1000pF
50V
C4622
10uF
35V
SPK_R+
C4603
100pF
50V
+3.3V_Normal
C4634
0.47uF
50V
AUD_SCK
R4602
10K
R4607
3.3
OPT
C4609
33pF
50V
SPK_R-
P4601
WAFER-ANGLE
1
2
3
4
0.1uF
C4637
50V
SPK_R+
+24V_AMP
R4613
12
0.1uF
C4639
50V
R4610
12
C4633
1uF
25V
C4632
390pF
50V
R4611
12
+24V_AMP
D4601
100V
1N4148W
OPT
0.1uF
C4602
50V
SDA3_3.3V
C4630
390pF
50V
AUD_MASTER_CLK
0.1uF
C4618
50V
SPK_L+
C4625
22000pF
50V
C4631
390pF
50V
R4612
12
AMP_MUTE
0.1uF
C4608
16V
R4605
3.3K
0.1uF
C4621
50V
D4602
100V
1N4148W
OPT
L4602
BLM18PG121SN1D
C4605
1000pF
50V
C4626
22000pF
50V
R4604
100
0.1uF
C4614
16V
C4627
1uF
25V
SCL3_3.3V
+24V_AMP
0.1uF
C4638
50V
C4629
390pF
50V
AUD_LRCH
R4601
10K
C4628
1uF
25V
SPK_L+
C4617
22000pF
50V
AMP_RESET_N
R4608
12
D4603
100V
1N4148W
OPT
+3.5V_ST
0.1uF
C4636
50V
0.1uF
C4613
16V
C4606
10uF
10V
OPT
C4607
33pF
50V
C4635
0.47uF
50V
R4616
4.7K
R4603
100
R4617
4.7K
L4605
10.0uH
L4606
10.0uH
L4603
10.0uH
L4604
10.0uH
IC4601
NTP-7400L
1
AGND_PLL
2
AVDD_PLL
3
DVDD_PLL
4
LF
5
DGND_PLL
6
GND_1
7
DGND
8
DVDD
9
SDATA
10
WCK
11
BCK
12
SDA
13
SCL
14
/FAULT
15
MONITOR0
16
MONITOR1
17
MONITOR2
18
BST2B
19
PGND2B
20
OUT2B_1
21
OUT2B_2
22
PVDD2_1
23
PVDD2_2
24
PVDD2_3
25
OUT2A_1
26
OUT2A_2
27
PGND2A
28
BST2A
29
VDR2
30
GND_2
31
VCC_5
32
VDR1
33
BST1B
34
PGND1B
35
OUT1B_1
36
OUT1B_2
37
PVDD1_1
38
PVDD1_2
39
PVDD1_3
40
OUT1A_1
41
OUT1A_2
42
PGND1A
43
BST1A
44
/RESET
45
AD
46
GND_IO
47
CLK_I
48
VDD_IO
49
[EP]
C4640
10uF
10V
SPEAKER_L
1ST : 0TRIY80001A  2ND : 0TR387500AA
SPEAKER_R
Q4601
DUAL COMPONENT
BCM35230
LV7 EU AMP
46
50
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.
R4702
10K
1%
S/T_SDA
R4707
1.5K
C4701
0.1uF
D4707
5.6V
CDS3C05HDMI1
EEPROM_SDA
C4702
0.1uF
16V
OPT
R4708
1.5K
D4702
5.6V
AMOTECH
+3.5V_ST
D4701
5.6V
AMOTECH
+3.5V_ST
C4704
0.1uF
16V
OPT
D4704
5.6V
CDS3C05HDMI1
L4701
BLM18PG121SN1D
KEY2
LED_B/LG_LOGO
C4705
1000pF
50V
L4702
BLM18PG121SN1D
R4706
100
C4708
100pF
50V
P4702
12507WR-12L
IR_12PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
R4705
100
D4705
5.6V
AMOTECH
P4701
12507WR-15L
IR_15PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
D4703
5.6V
CDS3C05HDMI1
S/T_SCL
R4701
10K
1%
R4704
100
R4703
100
D4706
5.6V
CDS3C05HDMI1
LED_R/BUZZ
KEY1
EEPROM_SCL
+3.3V_Normal
R4710
100
R4711
100
C4703
0.1uF
IR
R4722
47K
COMMERCIAL
R4716
47K
COMMERCIAL
R4718
0
OPT
+3.5V_ST
+3.5V_ST
Q4701
2SC3052
COMMERCIAL
E
B
C
R4720
10K
COMMERCIAL_EU
Q4703
2SC3052
COMMERCIAL_EU
E
B
C
IR_OUT
R4713
10K
COMMERCIAL
Q4704
2SC3052
COMMERCIAL
E
B
C
R4714
47K
COMMERCIAL
+3.5V_ST
Q4702
2SC3052
COMMERCIAL
E
B
C
R4709
0
R4721
47K
COMMERCIAL
R4719
47K
COMMERCIAL
R4715
22
COMMERCIAL
+3.5V_ST
+3.5V_ST
R4717
3.3K
OPT
R4712
47K
COMMERCIAL
C4709
0.1uF
16V
OPT
C4710
0.1uF
16V
OPT
1ST : EAH42720601, 2ND : EAH60994401
D4703,D4704
D4705,D4706
DUAL COMPONENT
IR & KEY
BCM35230
LV7 EU IR
47
50
COMMERCIAL
Page of 43
Display

Click on the first or last page to see other 47LK950S (CHASSIS:LD12P) service manuals if exist.