DOWNLOAD LG 32LN52XX / 32LN520B (CHASSIS:LD36M) Service Manual ↓ Size: 8.68 MB | Pages: 75 in PDF or view online for FREE

Model
32LN52XX 32LN520B (CHASSIS:LD36M)
Pages
75
Size
8.68 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32ln52xx-32ln520b-chassis-ld36m.pdf
Date

LG 32LN52XX / 32LN520B (CHASSIS:LD36M) Service Manual ▷ View online

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.
REAR_JACK_EU_OS_ERRC_LN52
2013/03/07
66
NC4_S7LRM
JK2801
PSC008-01
EU
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
C2817
0.1uF
50V
EU
R2804
470K
R2813
10K
EU
SC1_G+/COMP1_Y+
SC1/COMP1_L_IN
R2805
470K
SCART1_Rout
R2817
3.9K
EU
R2857
220K
EU
R2819
12K
EU
IC2801
AZ4580MTR-E1 
EU
3
IN1+
2
IN1-
4
VEE
1
OUT1
5
IN2+
6
IN2-
7
OUT2
8
VCC
R2808
10K
EU
R2868
10K
EU
C2823
33pF
EU
R2864
470K
OPT
R2814
15K
EU
R2869
10K
EU
SCART1_MUTE
SC1_ID
D2814
20V
ESD_SCART
R2812
10K
EU
SC1_FB
R2815
22
EU
DTV/MNT_L_OUT
D2808
5.6V
ESD_SCART
+3.5V_ST
R2803
75
R2807
75
EU
R2862
5.6K
EU
D2811
20V
ESD_SCART
R2858
220K
EU
R2810
1K
EU
D2815
5.6V
ESD_SCART
DTV/MNT_L_OUT
R2816
75
EU
R2861
2.2K
EU
R2818
12K
EU
D2810
20V
ESD_SCART
DTV/MNT_R_OUT
D2817
5.6V
ESD_SCART
SCART1_Lout
D2819
5.6V
ESD_SCART
R2811
75
EU
R2802
75
D2812
20V
ESD_SCART
+12V
C2820
330pF
EU
D2816
20V
ESD_SCART
SC1_R+/COMP1_Pr+
D2818
5.6V
ESD_SCART
R2867
33K
EU
R2860
2.2K
EU
R2863
5.6K
EU
DTV/MNT_L_OUT
C2819
330pF
EU
SC1/COMP1_R_IN
+3.3V_Normal
AV_CVBS_DET
R2866
33K
EU
R2806
75
DTV/MNT_R_OUT
C2821
10uF
16V
EU
R2865
470K
OPT
D2813
20V
ESD_SCART
C2822
10uF
16V
EU
DTV/MNT_R_OUT
SC1/COMP1_DET
C2824
33pF
EU
SC1_B+/COMP1_Pb+
4.7uF
C2810
EU
C2811
0.1uF
EU
DTV/MNT_VOUT
C2809
0.1uF
EU
+3.3V_Normal
SC1_SOG_IN
C2801
47pF
50V
EU
SC1_CVBS_IN
0
R2801
EU
C2816
0.1uF
SCART_MUTE
R2840
2K
SCART_MUTE
R2839
2K
SCART_MUTE
R2844
10K
SCART_MUTE
Q2804
MMBT3906(NXP) 
SCART_MUTE
1
2
3
MMBT3904(NXP)
Q2803
SCART_MUTE
MMBT3904(NXP)
Q2802
SCART_MUTE
IC2802
MM1756DURE
EU
3
BIAS
2
GND
4
OUT
1
IN
6
VCC
5
PS
C2825
1000pF
50V
OPT
C2826
1000pF
50V
OPT
D2826
ZENER
ESD_SCART
D2827
ZENER
ESD_SCART
FULL SCART
CLOSE TO MSTAR
SCART AMP
[SCART AUDIO MUTE]
FULL SCART
CLOSE TO MSTAR
COMPONENT & AV NOT USE TP(LN52)
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.
2012/11/28
Adapter_HDMI_R2_LN52
67
NC4_S7LRM
CK-_HDMI2
R829
100
+5V_Normal
DDC_SDA_2
D801
ESD_HDMI
R830
100
D812
ESD_HDMI
D809
ESD_HDMI
D1+_HDMI2
HDMI_CEC
D804
MMBD6100
A
2
C
A
1
D2+_HDMI2
DDC_SCL_2
D1-_HDMI2
R806
10K
CK+_HDMI2
R811
100
D0-_HDMI2
HPD2
D811
ESD_HDMI
DDC_SCL_2
DDC_SDA_2
R804
10K
D820-*1
IP4283CZ10-TBA
ESD_HDMI_NXP
3
GND_1
2
TMDS_CH1+
4
TMDS_CH2-
1
TMDS_CH1-
5
TMDS_CH2+
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4
JK801
EAG59023302
14
NC
13
CE_REMOTE
5
D1_GND
20
SHIELD
GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
R802
1K
R812
2.7K
D810
ESD_HDMI
D821-*1
IP4283CZ10-TBA
ESD_HDMI_NXP
3
GND_1
2
TMDS_CH1+
4
TMDS_CH2-
1
TMDS_CH1-
5
TMDS_CH2+
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4
D820
RCLAMP0524PA
ESD_HDMI_SEMTECH
1
8
2
7
3
6
4
5
9
10
D2-_HDMI2
HDMI_CEC
D0+_HDMI2
HDMI_ARC
R805
0
HDMI1_ARC
R803
1.8K
5V_HDMI_2
D821
RCLAMP0524PA
ESD_HDMI_SEMTECH
1
8
2
7
3
6
4
5
9
10
R813
2.7K
CEC_REMOTE_S7
R801
3.3K
5V_DET_HDMI_2
D808
ESD_HDMI
D813
ESD_HDMI
Q801
MMBT3904(NXP)
E
B
C
5V_HDMI_2
MHL_CD_SENSE
MHL_OCP_EN
/VBUS_EN
AVDD5V_MHL
5V_DET_HDMI_4
/MHL_OCP_DET
VA803
ESD_HDMI
DDC_SDA_1
CK+_HDMI1
VA804
ESD_HDMI
HPD1
R809
10K
D800-*1
IP4283CZ10-TBA
ESD_HDMI_NXP
3
GND_1
2
TMDS_CH1+
4
TMDS_CH2-
1
TMDS_CH1-
5
TMDS_CH2+
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4
VA800
ESD_HDMI
VA806
ESD_HDMI
R807
1.8K
R808
3.3K
HDMI_CEC
VA801
ESD_HDMI
D2-_HDMI1
D1-_HDMI1
D2+_HDMI1
R814
100
5V_HDMI_1
CK-_HDMI1
D800
RCLAMP0524PA
ESD_HDMI_SEMTECH
1
8
2
7
3
6
4
5
9
10
5V_DET_HDMI_1
D0-_HDMI1
D802-*2
IP4283CZ10-TBA
ESD_HDMI_NXP
3
GND_1
2
TMDS_CH1+
4
TMDS_CH2-
1
TMDS_CH1-
5
TMDS_CH2+
6
NC_1
7
NC_2
8
GND_2
9
NC_3
10
NC_4
R800
1K
D0+_HDMI1
VA802
ESD_HDMI
D1+_HDMI1
D802
RCLAMP0524PA
ESD_HDMI_SEMTECH
1
8
2
7
3
6
4
5
9
10
Q800
MMBT3904(NXP)
E
B
C
R810
10K
R815
100
JK800
EAG59023302
14
NC
13
CE_REMOTE
5
D1_GND
20
SHIELD
GND
12
CK-
11
CK_GND
2
D2_GND
19
HP_DET
18
5V
10
CK+
4
D1+
1
D2+
17
GND
9
D0-
8
D0_GND
3
D2-
16
DDC_DATA
7
D0+
6
D1-
15
DDC_CLK
DDC_SCL_1
R817
2.7K
D803
MMBD6100
A
2
C
A
1
+5V_Normal
DDC_SDA_1
5V_HDMI_1
R818
2.7K
DDC_SCL_1
HDMI_1(ARC)
HDMI(REAR 2 Without MHL)
CEC
EU NOT USED TP (LN52_ERRC)
SIDE HDMI DELETE
MHL DELETE
HDMI_2
THERMAL
THERMAL
THERMAL
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.
Adapter Power
2013/04/17
68
NC4_S7LRM
Q407
MMBT3904(NXP)
E
B
C
R491
0
C448
3300pF
50V
IC407
AP7173-SPG-13 HF(DIODES)
3
VCC
2
PG
4
EN
1
IN
5
GND
6
SS
7
FB
8
OUT
9
[EP]
C422
0.1uF
16V
OPT
R441
75K
1/16W
1%
C424
330pF
50V
IC403
TPS54319TRE
1
VIN_1
3
GND_1
7
COMP
9
SS/TR
10
PH_1
11
PH_2
12
PH_3
13
BOOT
14
PWRGD
15
EN
16
VIN_3
5
AGND
8
RT/CLK
6
VSENSE
4
GND_2
2
VIN_2
17
EP[GND]
Q403
AO3435
FET_2.5V_AOS
G
D
S
+3.3V_Normal
PANEL_VCC
Q409
AO3407A
G
D
S
R402
300
RESET_IC_SOC_RESET
R457
4.3K
1/16W
1%
R417
4.7K
OPT
+1.5V_DDR
R432
330K
R462
10K
R430
10K
C440
0.1uF
16V
Q400
MMBT3904(NXP)
E
B
C
C417-*1
10uF
10V
CAP_10uF_X7R
R489
10K
+3.5V_ST
R439
33K
R453
27K
1%
R445
2.2K
C447
0.33uF
16V
R443
10K
+12V
+3.5V_ST
R461
10K
OPT
R440
5.6K
R488
100K
C403-*1
10uF
10V
CAP_10uF_X7R
R428
10K
C411
0.1uF
16V
C426
100pF
50V
OPT
R410
100K
C441
0.1uF
16V
C413
0.047uF
25V
L403
BLM18PG121SN1D
C444
0.1uF
16V
+3.3V_Normal
Q403-*1
DMP2130L
FET_2.5V_DIODE
G
D
S
IC408
NCP803SN293
PWR_DET_ON_SEMI
1
GND
3
VCC
2
RESET
560pF
C467
50V
R414
10K
+12V
+5V_Normal
POWER_ON/OFF_1
+1.10V_VDDC
POWER_DET
RL_ON
C420
22uF
16V
IC408-*1
APX803D29
PWR_DET_ON_DIODES
1
GND
3
VCC
2
RESET
+3.3V_Normal
R454
11K 1%
R456
4.7K
1/16W
1%
+3.5V_ST
+3.3V_Normal
USB1_CTL
R438
22K
R433
10K
R436
15K
+3.5V_ST
C425
0.1uF
16V
PANEL_CTL
+5V_USB
R434
10K
R409
2K
1%
+3.5V_ST
POWER_DET_RESET
USB1_OCD
R463
10K
RESET_IC_SOC_RESET
+3.3V_Normal
L420
BLM18PG121SN1D
+5V_Normal
+2.5V_Normal
C474
0.1uF
R405
5.6K
C419
4.7uF 10V
C488
3300pF
R442
30K
1/16W
1%
C405
10uF
16V
C410
3300pF
50V
C439
100pF
50V
R407
5.6K
C421
22uF
16V
OPT
R452
33K
1%
C476
0.1uF
16V
L406
3.6uH
L415
3.6uH
C403
10uF
10V
CAP_10uF_X5R
85C
C417
10uF
10V
CAP_10uF_X5R
85C
R402-*1
100
+3.5V_SOC_RESET
IC401
TPS65281RGV 
3
ROSC
2
COMP
4
RLIM
1
SS
5
EN_SW
6
FAULT
7
AGND
8
SW_OUT
9
SW_IN
10
FB
11
LX
12
BST
13
PGND
14
VIN
15
V7V
16
EN
17
[EP]
IC402
TJ1118S-2.5
1
GND
2
OUT
3
IN
C437
22uF
10V
C430
10uF
10V
10uF
C461
10V
C423
2.2uF
10V
C453
22uF
10V
C456
22uF
10V
C443
10uF
16V
C472
22uF
10V
D402
5V
OPT
D405
5V
+24V_ADAPTER
+3.5V_ST
C427
0.01uF
50V
R426
12K
Q405
AO3407A
G
D
S
+24V
POWER_ON/OFF_1
R427
10K
C429
0.01uF
50V
C418
2.2uF
50V
R425
10K
Q404
MMBT3904(NXP)
E
B
C
R424
10K
OPT
+24V_ADAPTER
L407
4.7uH
C414
150pF
50V
C436
0.1uF
16V
C408
0.01uF
50V
R419
10K
C401
10uF
35V
D401
40V
B540C
L404
BLM18PG121SN1D
C406
0.1uF
50V
C449
0.1uF
16V
IC404
RT8289GSP 
3
NC_2
2
NC_1
4
FB
1
BOOT
5
EN
6
GND
7
VIN
8
SW
9
[EP]GND
+24V_ADAPTER
+12V
+24V_LED_DRIVER
R408
11K
1%
R415
100K 1%
L405
6.8uH
C433
47pF
50V
IC400
TPS54331D
3
EN
2
VIN
4
SS/TR
1
BOOT
5
VSENSE
6
COMP
7
GND
8
PH
C442
4700pF
50V
C435
22uF
10V
C402
0.1uF
50V
D400
40V
C400
10uF
35V
R420
20K
C450
1000pF
50V
OPT
C409
0.01uF
50V
C431
0.1uF
16V
L400
BLM18PG121SN1D
+24V_ADAPTER
C446
0.1uF
16V
+3.5V_ST
+3.3V_Normal
R444
10K
WLED_ENABLE
Q410
MMBT3904(NXP)
E
B
C
R446
10K
R437
1K
INV_CTL
R400
330K
R412
68K
R413
16K
1%
C428
10uF
35V
R493
100
L410
BLM18PG121SN1D
POWER_ON/OFF_1
R421
180K
1%
R423
56K
1%
L401
CB2012PK501T
L413
CB2012PK501T
L412
UBW2012-121F
L421
UBW2012-121F
+24V_ADAPTER
+12V
R450
2.7K
1%
PD_+12V
R496
1.2K
1%
PD_+12V
C490
22uF
10V
D406
5V
OPT
C491
22uF
10V
R494
27K
1%
PD_+24V_ADAPTER
R495
5.1K
1%
PD_+24V_ADAPTER
D403
2.5V
OPT
D404
2.5V
OPT
JK400
KJA-DC-1-0032
1
2
2
4
4
C434
22uF
16V
C432
22uF
16V
C445
10uF
16V
+12V -> PANEL_VCC
+3.3V_Normal -> +2.5V_Normal
+3.5V_ST -> +1.10V_VDDC S7LRM core
CHANGE TO
16V/X5R
R1
PD_+12V --> 3.69V
CHANGE TO
10UF/10V/X5R
+3.5V_ST -> +3.3V_Normal
CHANGE TO
10UF/10V/X5R
Vout=0.8*(1+R1/R2)=1.5319
+12V -> +5V_Normal & +5V_USB
+3.5V_ST -> +1.5V_DDR
R2
Vout=0.827*(1+R1/R2)=1.1578V
R2
Power_DET
R1
R1
PD_+24V_ADAPTER --> 3.81V
Vout=0.8*(1+R1/R2)=5.236V
R2
1.5A
L13 Adapter POWER BLOCK
AO3407A Vgs : 10.8V(24V input)
AMP_VCC
+24V_AMP_VCC
+24V_ADAPTER -> +12V
+24V_ADAPTER -> +3.5V_ST
5A
Vout=1.222*(1+R1/R2)=12.33V
R1
R2
3A
3A
R2
Vout=0.8*(1+R1/R2)=3.37V
3A
R1
1A
INV_CTL
ADAPTER JACK
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.
D6900
1N4148W
IC6900
MAP3202SIRH
3
GATE
2
VCC
4
GND
1
EN
6
RT
5
CS
7
SYNC
8
REF
9
PWMO
10
OVP
11
PWMI
12
COMP
13
FBP
14
FBN
+24V_LED_DRIVER
R6923
1K
R6916
10K
1%
C6901
0.1uF
50V
+12V
PWM_DIM
R6901
10
R6926
100K
R6917
75K
R6921
1K
R6925
1K
D6902
1N4148W
WLED_ENABLE
R6922
OPT
R6907
10K
R6911
22K
1%
32inch_Adapter
C6906
0.47uF
16V
Q6902-*1
STN4NF20L
42inch_Adapter
S
G
D
R6911-*1
12K
1%
42inch_Adapter
R6932
3.9
1%
R6934
3.9
1%
R6930
3.9
1%
R6928
3.9
1%
R6927
4.3
1%
R6931
4.3
1%
R6929
4.3
1%
R6933
4.3
1%
R6915-*1
75K
1%
42_ROW_Adapter
R6915
51K
1%
32_Adapter/42_POLA_Adapter
R6904
430K
1%
Q6900
MMBT2907ALT1G
E
B
C
R6906
150
R6935
0
5%
32_Adapter/42_ROW_Adapter
P6900
1
3
5
7
8
C6902
0.47uF
50V
C6905
1000pF
50V
C6909
1000pF
50V
C6912
1000pF
50V
C6913
1000pF
50V
C6903
1000pF
50V
C6911
0.01uF
50V
R6920
22K
C6914
330pF
50V
T6900
13I-DD01 
32inch_Adapter
2
4
3
1
T6900-*1
13I-DD02
42inch_Adapter
2
4
3
1
Q6901
FDD390N15
G
D
S
Q6902
FDT86106LZ
32inch_Adapter
S
G
D
R6935-*1
20K1%
42_POLA_Adapter
R6900
5.1K
R6902
100K
C6916
10uF
35V
OPT
C6917
10uF
35V
OPT
C6918
10uF
35V
OPT
C6919
10uF
35V
D6903
SF20D600D2
A2
C
A1
R6942
150
R6943
150
R6944
150
R6938
150
R6945
150
R6939
150
R6940
150
R6941
150
R6918
470K
1%
R6919
470K
1%
R6908 1
R6936
1
R6950
1
R6947
1
R6948
1
R6949
1
R6952
1
R6909
1
R6946
1
R6951
1
R6953
1
R6954
1
R6955
1
R6956
1
R6957
1
R6958
1
R6959
1
42inch_Adapter
R6960
1
42inch_Adapter
R6961
1
42inch_Adapter
R6962
1
42inch_Adapter
R6963
1
42inch_Adapter
R6964
1
42inch_Adapter
R6965
1
42inch_Adapter
R6966
1
42inch_Adapter
R6967
1
R6968
1
R6969
1
R6970
1
R6971
1
42inch_Adapter
R6972
1
42inch_Adapter
R6973
150
R6974
150
R6975
150
R6976
150
R6977
150
R6978
150
R6979
150
C6910
0.047uF
350V
OPT
C6907
33uF
160V
32inch_Adapter
NRA
C6908
33uF
160V
32inch_Adapter
NRA
C6920
15uF
250V
42inch_Adapter
NRA
C6907-*1
15uF
250V
42inch_Adapter
C6908-*1
15uF
250V
42inch_Adapter
C6900
470uF
35V
NRA
C6915
470uF
35V
42inch_Adapter
NRA
L6900
BFS3550R2BD8G
L6901
BFS3550R2BD8G
R6903
33
42inch_Adapter
R6905
22
42inch_Adapter
C6924
1000pF
630V
C6925
1000pF
630V
OPT
R6903-*1
47
32inch_Adapter
R6905-*1
10
32inch_Adapter
R6924
15K
42 POLA
13I-DD02
68K->51K
20K
LED-
LED+
32":85V
42":175V
PATTERN WIDTH 10mm
2013/04/04
69
NC4_S7LRM
Adapter LED Driver
T6900
MODEL
Q6902
R6915
R6935
13I-DD01
32 ROW/POLA
FDT86106
51K
0
13I-DD02
42 ROW
75K
0
STN4NF20L
STN4NF20L
300mA
285mA
400mA
R6911
22K
12K
12K
To bo obsolete
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