LG 42LN549C / 42LP360H (CHASSIS:LB3AC) 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.
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.
/SPI_CS
0
OPT
R304
MMBT3904(NXP)
OPT
Q301
Q301
E
B
C
SPI_SCK
0 . 1 u F
S_FLASH_OS
C301
SPI_SDI
/FLASH_WP
MX25L8006EM2I-12G
S_FLASH_OS_MACRONIX
IC301
3
WP#
2
SO/SIO1
4
GND
1
CS#
5
S I / S I O 0
6
SCLK
7
HOLD#
8
VCC
SPI_SDO
33
S_FLASH_OS
R303
4.7K
OPT
R302
R302
+3.5V_ST
+3.5V_ST
10K
OPT
R301
+3.5V_ST
W25Q80BVSSIG
S_FLASH_OS_WINBOND
IC301-*1
3
%WP[IO2]
2
DO[IO1]
4
GND
1
CS
5
D I [ I O 0 ]
6
CLK
7
HOLD[IO3]
8
VCC
3
S e r i a l F L A S H
S e r i a l F l a s h f o r S P I b o o t _ N O N _ O S a n d O S
LA2AW
2 0 1 2 . 0 9 . 1 1
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.
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.
390pF
50V
C531
0 . 1 u F
50V
50V
C519
10K
R502
NON_LIPS
AUD_MASTER_CLK
10uF
35V
C524
12
R511
0 . 1 u F
50V
50V
C540
AMP_SCL
0 . 1 u F
50V
50V
C520
10uF
10V
OPT
C511
100
R504
12
R508
10.0uH
L505
AUD_LRCH
CIS21J121
L501
10.0uH
L503
0 . 1 u F
50V
C539
10.0uH
L504
12
R509
SPK_R-
+24V_AMP
0 . 1 u F
50V
50V
C522
SPK_R+
100pF
50V
C503
AUD_LRCK
22000pF
50V
50V
C527
3 . 3
OPT
R507
22000pF
50V
C526
0
LIPS_ONLY
R522
1N4148W
100V
OPT
D504
1N4148W
100V
OPT
D501
SPK_L-
33pF
50V
50V
C507
4.7K
R519
AMP_RESET
+24V_AMP
1000pF
50V
C504
WAFER-ANGLE
P501
1
2
3
4
AUD_SCK
THERMAL
NTP-7500L
IC501
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
AGND
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]
0 . 1 u F
16V
C514
12
R514
33pF
50V
50V
C509
MMBT3904(NXP)
Q501
NON_LIPS
E
B
C
10K
R521
10uF
10V
C510
4.7K
R518
+24V_AMP
SPK_L+
12
R515
0 . 1 u F
50V
C501
1uF
25V
25V
C529
10uF
35V
35V
C523
1000pF
50V
C516
BLM18PG121SN1D
L502
10uF
10V
10V
C515
SPK_L-
390pF
50V
C533
390pF
50V
C532
10.0uH
L506
100
R503
POWER_DET
AMP_SDA
0 . 1 u F
50V
50V
C521
1uF
25V
25V
C528
12
R512
10K
R501
NON_LIPS
SPK_R+
1uF
25V
25V
C534
+3.5V_ST
10uF
10V
C506
AMP_MUTE
22000pF
50V
C518
0 . 1 u F
50V
C502
0 . 1 u F
16V
C512
0 . 1 u F
16V
C508
+24V
SPK_L+
+3.3V_Normal
1000pF
50V
C505
1N4148W
100V
OPT
D502
4.7K
R516
100
R506
NON_LIPS
4.7K
R517
390pF
50V
C530
SPK_R-
0 . 1 u F
16V
C513
22000pF
50V
C517
1N4148W
100V
OPT
D503
0 . 4 7 u F
50V
C535
0 . 4 7 u F
50V
C536
0 . 1 u F
50V
C538
0 . 1 u F
50V
C537
3.3K
R505
10K
R520
NON_LIPS
12
R510
12
R513
0 . 0 1 u F
50V
50V
OPT
C525
SPEAKER_L
SPEAKER_R
NTP-7500
Audio amp(NTP-7500)
5
LA2AW
2 0 1 2 . 0 9 . 1 1
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.
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.
1K
RGB_PC
R732
10K
R707
100
R711
DSUB_DET
J P 7 0 8
0 . 1 u F
C706
100
R710
68pF
50V
50V
OPT
C718
5.6V
D702
AV_CVBS_IN
ADMC 5M 02 200L
5.6V
OPT
VA708
VA708
AV_CVBS_DET
AV_COMP_PC_R_IN
68pF
50V
50V
OPT
C720
0 . 1 u F
16V
16V
C711
+3.3V_Normal
12K
R709
5.6V
OPT
VA707
PM_TXD
MMBD6100
RGB_PC
D710
A2
C
A1
1K
R712
5.6V
OPT
D705
AV_COMP_PC_L_IN
+3.3V_Normal
+3.3V_Normal
J P 7 0 9
+3.5V_ST
470K
R702
0 . 1 u F
C703
0 . 3 3 u F
C701
470K
R703
DSUB_HSYNC
0 . 1 u F
16V
NON_CI_CAP_RGB_PC
C724
1K
R705
DSUB_B+
DSUB_VSYNC
ADUC 20S 02 010L
20V
OPT
VA705
DSUB_G+
PM_RXD
P P J 2 3 3 - 0 1
JK701
4A
[YL]O-SPRING
5A
[YL]E-LUG
3A
[YL]CONTACT
4B
[WH]C-LUG
5C
[RD]E-LUG
4C
[RD]O-SPRING
3C
[RD]CONTACT
100pF
50V
50V
C709
ADUC 20S 02 010L
20V
RGB_VARISTOR
VA703
0 . 1 u F
C705
18pF
50V
NON_CI_CAP_RGB_PC
C721
0 . 1 u F
C702
ADUC 20S 02 010L
20V
RGB_VARISTOR
VA702
2.2K
RGB_PC
R723
ADUC 20S 02 010L
20V
RGB_VARISTOR
VA704
RGB_DDC_SDA
120-ohm
L701
CDS3C30GTH
30V
30V
OPT
D704
10K
R704
ADUC 20S 02 010L
20V
OPT
VA701
RGB_DDC_SCL
12K
R708
75
RGB_PC
R718
75
RGB_PC
R719
10K
RGB_PC
R729
220pF
50V
50V
OPT
C710
5.6V
OPT
VA706
75
RGB_PC
R720
2.2K
RGB_PC
R724
330pF
50V
50V
C713
0 . 1 u F
16V
16V
C707
BAP70-02
50V
D707
+3.5V_ST
+5V_Normal
EAN41348201
MAX3232CDR
IC701
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
SPG09-DB-009
JK706
1
2
3
4
5
6
7
8
9
10
0 . 1 u F
C704
330pF
50V
C712
120-ohm
L702
IR_OUT
5.6V
D703
Fiber Optic
JST1223-001
SPDIF-JACK-SOLTEAM
JK702-*1
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
CDS3C30GTH
30V
30V
OPT
D706
10K
R706
DSUB_R+
Fiber Optic
2F01TC1-CLM97-4F
SPDIF-JACK-FOXCONN
JK702
3
VIN
2
VCC
1
GND
4
SHIELD
30V
D701
18pF
50V
NON_CI_CAP_RGB_PC
C723
SPG09-DB-010
RGB_PC
JK705
1
RED
2
GREEN
3
BLUE
4
GND_1
5
DDC_GND
6
RED_GND
7
GREEN_GND
8
BLUE_GND
9
NC
10
SYNC_GND
11
GND_2
12
DDC_DATA
13
H_SYNC
14
V_SYNC
15
DDC_CLOCK
16
SHILED
75
R701
SPDIF_OUT
47pF
50V
50V
C708
JP_GND1
JP_GND2
JP_GND3
JP_GND4
USB1_DM
USB2_DP
+5V_USB_2
+5V_USB_1
USB DOWN STREAM
3AU04S-305-ZC-(LG)
JK703
1
2
3
4
5
RCLAMP0502BA
OPT
D709
USB DOWN STREAM
3AU04S-305-ZC-(LG)
JK704
USB2
1
2
3
4
5
USB1_DP
RCLAMP0502BA
OPT
D708
USB2_DM
10uF
10V
C719
TEST
10uF
10V
C717
CIS21J121
TEST
L703
47
R715
TEST
MLB-201209-0120P-N2
120-ohm
L703-*1
4.7K
OPT
R713
+5V_Normal
+3.3V_Normal
USB2_OCD
AP2191DSG
EAN61849601
IC702
TEST
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
10K
R714
TEST
USB2_CTL
+5V_USB_2
+5V_USB_1
22uF
10V
C716
TEST
RS232C
RGB PC
5 . 1 5 M s t a r C i r c u i t A p p l i c a t i o n
SPDIF OPTIC JACK
L-MONO
Rear AV
REAR JACKS
7
LA2AW
2 0 1 2 . 0 9 . 1 1
JP_GND
USB2
USB1
OCP for USB_2
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.
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.
10K
RJP
R914
0.01uF
RJP
C907
0.01uF
RJP
C902
1uF
25V
25V
OPT
C903
+12V
5.1V
RJP
ZD903
22uF
16V
16V
OPT
C908
0
RJP_PROTECTION
R906
5.1V
RJP
ZD904
RJP_CTRL4
510 RJP
R912
0.01uF
RJP
C905
5.1K
RJP_PROTECTION
R903
3.9K
RJP
R916
0.01uF
RJP
C906
RJP_CTRL1
2 . 2 u F
16V RJP
C901
3.9K
RJP
R917
10K
RJP
R902
3.9K
RJP
R915
5.1V
RJP
ZD902
5.1K
RJP_PROTECTION
R904
510 RJP
R913
100K
RJP_PROTECTION
R908
RJP_CTRL2
5.1V
RJP
ZD901
8.2K
RJP
R919
1K
RJP_PROTECTION
R905
510 RJP
R909
0
RJP_NORMAL
R907
5.1V
RJP
ZD905
KRJV9768-1001-024
RJP
JK901
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
RJP_CTRL3
AO3407ARJP_PROTECTION
Q901
G
D
S
BLM18PG121SN1D
RJP
L901
10K
RJP
R901
0.01uF
RJP
C904
510 RJP
R911
AO3407A RJP
Q902
G
D
S
RJP_CTRL0
3.9K
RJP
R918
510 RJP
R910
10K
R936
EXT_SPK
+3.5V_ST
22.0uH
L904
EXT_SPK
2 . 2 u F
50V
50V
C922
EXT_SPK
EXT_OUT_L
EXT_OUT_R
2 . 2 u F
50V
50V
C919
EXT_SPK
1uF
50V
50V
C912
EXT_SPK
10K
R922
EXT_SPK
4.7K
R923
EXT_SPK
EXT_AMP_L
0 . 2 2 u F
50V
50V
C917
EXT_SPK
BLM18PG121SN1D
L902
EXT_SPK
4.7K
R935
EXT_SPK
47uF
25V
C923
EXT_SPK
+3.3V_Normal
EXT_AMP_R
10K
R933
EXT_SPK
4 . 7 u F
50V
50V
C916
EXT_SPK
EXT_SPK_DET
1uF
10V
C928
EXT_SPK
4.7K
R934
EXT_SPK
TPA3124D2PWPR
IC901
EXT_SPK
3
PVCCL_2
2
SD
4
MUTE
1
PVCCL_1
6
RIN
5
LIN
7
BYPASS
8
AGND_1
9
AGND_2
10
PVCCR_1
11
VCLAMP
12
PVCCR_2
13
PGNDR_1
14
PGNDR_2
15
ROUT
16
BSR
17
GAIN1
18
GAIN0
19
AVCC_1
20
AVCC_2
21
BSL
22
LOUT
23
PGNDL_1
24
PGNDL_2
1uF
OPT
C925
0 . 2 2 u F
50V
50V
C918
EXT_SPK
22.0uH
L905
EXT_SPK
2 . 2 u F
50V
50V
C920
EXT_SPK
0 . 1 u F
50V
50V
C915
EXT_SPK
10K
OPT
R932
EXT_OUT_R
SUB_AMP_MUTE
001:AC13
EXT_OUT_L
1uF
10V
C927
EXT_SPK
10K
R931
EXT_SPK
1uF
50V
50V
C911
EXT_SPK
P E J 0 3 4 - 0 1
JK902
EXT_SPK
6B
T_TERMINAL2
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
3
E_SPRING
100
R938
EXT_SPK
47uF
25V
C924
EXT_SPK
1uF
OPT
C926
+24V
2 . 2 u F
50V
50V
C921
EXT_SPK
0 . 1 u F
50V
C914
EXT_SPK
10K
OPT
R930
10K
R937
EXT_SPK
0 . 1 u F
50V
C913
EXT_SPK
100K
R939
EXT_SPK
MMBT3904(NXP)
Q903
EXT_SPK
E
B
C
10K
R924
EXT_SPK
RJP / EXT AMP
9
LA2AW
2 0 1 2 . 0 9 . 1 1
RJP
EXT_SPEAKER
S i n g l e e n d e d
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