LG 42LN549D (CHASSIS:LB3AX) 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.
10K
R502
NON_LIPS
CIS21J121
L501
SS
+24V_AMP
0
LIPS_ONLY
R522
MMBT3904(NXP)
Q501
NON_LIPS
E
B
C
0 . 1 u F
50V
C501
POWER_DET
10K
R501
NON_LIPS
+3.5V_ST
AMP_MUTE
0 . 1 u F
50V
C502
+24V
100
R503
NON_LIPS
10K
R520
NON_LIPS
MLB-201209-0120P-N2
L501-*1
MAG
10uH
L500
0
R506
+24V_AMP
SPK_L+
AUD_MASTER_CLK
43
R509
AMP_SDA
0 . 1 u F
16V
C506
0 . 2 2 u F
50V
50V
C518
CIS21J121
L505
1000pF
50V
50V
C500
AMP_RESET
SPK_R+
WAFER-ANGLE
P501
1
2
3
4
AMP_SCL
1000pF
50V
50V
C521
330pF
50V
50V
C510
43
R508
3216
10uF
35V
C514
SPK_R-
0 . 1 u F
16V
16V
C507
0 . 1 u F
50V
C513
0 . 2 2 u F
50V
50V
C520
SPK_L+
SPK_R+
0
R505
1uF
50V
C512
SPK_L-
1000pF
50V
50V
C522
0 . 1 u F
16V
16V
C505
0 . 1 u F
50V
C508
0 . 2 2 u F
50V
50V
C515
0 . 1 u F
16V
C503
0 . 2 2 u F
50V
50V
C516
10uH
L503
1uF
50V
C509
330pF
50V
50V
C511
T H
E R
M A
L
STA380BWF
IC500
1VCC_REG
2 VSS_REG
3 OUT2B
4 GND2
5 VCC2
6 OUT2A
7 OUT1B
8 VCC1
9 GND1
10 OUT1A
11VDD_REG
12GND_REG
13
NC_1
14
NC_2
15
NC_3
16
NC_4
17
NC_5
18
NC_6
19
NC_7
20
NC_8
21
NC_9
22
NC_10
23
NC_11
24
NC_12
25
NC_13
26
NC_14
27
NC_15
28
VDDDIG1
29
GNDDIG1
30
FFX3A
31
FFX3B
32
EAPD/FFX4A
33
TWARNEXT/FFX4B
34
VREGFILT
35
AGNDPLL
36
MCLK
37
BICKI
38
LRCKI
39
SDI
40
RESET
41
PWDN
42
INTLINE
43
SDA
44
SCL
45
SA
46
TESTMODE
47
GNDDIG2
48
VDDDIG2
49
[EP]
SPK_R-
43
R510
AUD_LRCH
AUD_LRCK
1000pF
50V
50V
C523
+3.3V_Normal
+3.3V_Normal
10uH
L504
0 . 2 2 u F
50V
50V
C519
0 . 2 2 u F
50V
50V
C517
1000pF
50V
50V
C524
AUD_SCK
10uH
L502
SPK_L-
2 . 2 u F
10V
C504
43
R507
NTP-7500
Audio amp(STA380BWF)
5
LA2AW
2 0 1 2 . 0 9 . 1 1
SPEAKER_R
SPEAKER_L
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
100
R711
DSUB_DET
J P 7 0 8
0 . 1 u F
C706
100
R710
68pF
50V
50V
OPT
C718
ADMC 5M 02 200L
5.6V
OPT
VA708
VA708
68pF
50V
50V
OPT
C720
5.6V
OPT
VA707
PM_TXD
MMBD6100
RGB_PC
D710
A2
C
A1
1K
R712
+3.3V_Normal
+3.3V_Normal
J P 7 0 9
+3.5V_ST
0 . 1 u F
C703
0 . 3 3 u F
C701
DSUB_HSYNC
0 . 1 u F
16V
NON_CI_CAP_RGB_PC
C724
DSUB_B+
DSUB_VSYNC
ADUC 20S 02 010L
20V
OPT
VA705
DSUB_G+
PM_RXD
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
CDS3C30GTH
30V
30V
OPT
D704
ADUC 20S 02 010L
20V
OPT
VA701
RGB_DDC_SCL
75
RGB_PC
R718
75
RGB_PC
R719
10K
RGB_PC
R729
5.6V
OPT
VA706
75
RGB_PC
R720
2.2K
RGB_PC
R724
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
IR_OUT
Fiber Optic
JST1223-001
SPDIF-JACK-SOLTEAM
JK702-*1
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
CDS3C30GTH
30V
30V
OPT
D706
DSUB_R+
Fiber Optic
2F01TC1-CLM97-4F
SPDIF-JACK-FOXCONN
JK702
3
VIN
2
VCC
1
GND
4
SHIELD
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
SPDIF_OUT
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
1
2
3
4
5
USB1_DP
RCLAMP0502BA
OPT
D708
USB2_DM
CIS21J121
USB2_SS
L703
47
R715
MLB-201209-0120P-N2
120-ohm
USB2_MAG
L703-*1
4.7K
OPT
R713
+5V_Normal
+3.3V_Normal
USB2_OCD
AP2191DSG
EAN61849601
IC702
3
IN_2
2
IN_1
4
EN
1
GND
5
FLG
6
OUT_1
7
OUT_2
8
NC
10K
R714
USB2_CTL
+5V_USB_2
+5V_Normal
22uF
10V
C717
22uF
10V
C719
J P 7 1 8
J P 7 1 9
5.6V
D721
OPT
CM2012FR10KT
L712
COMP2_ADC_FILTER_L
0
L710-*1
COMP2_NON_ADC_FILTER
0
L711-*1
COMP2_NON_ADC_FILTER
10K
R760
470K
R744
COMP2_Y+/AV_CVBS_IN
+3.3V_Normal
12K
R758
20V
D724
OPT
10K
R756
P P J 2 4 5 - 0 2
JK710
6A
[RD1]C-SPRING
7A
[RD1]E-LUG
4A
[RD1]CONTACT
5B
[WH]C-SPRING
8C
[RD2]E-LUG-S
6C
[RD2]C-SPRING
4C
[RD2]CONTACT
5D
[BL]C-SPRING
4E
[GN]CONTACT
6E
[GN]C-SPRING
7E
[GN]E-LUG
10K
R745
47pF
50V
50V
C732
COMP2_ADC_FILTER
10K
R759
AV_CVBS_DET
1000pF
50V
50V
C731
READY
5.6V
D723
OPT
75
R740
0 . 1 u F
16V
C738
20V
D720
OPT
+3.3V_Normal
COMP2_Pb+
47pF
50V
50V
C733
COMP2_ADC_FILTER
47pF
50V
50V
C735
COMP2_ADC_FILTER
AV_COMP_PC_R_IN
0
L712-*1
COMP2_NON_ADC_FILTER
1K
R762
COMP2_DET
1000pF
50V
50V
C730
READY
COMP2_Pr+
AV_COMP_PC_L_IN
47pF
50V
50V
C736
COMP2_ADC_FILTER
CM2012FR10KT
L710
COMP2_ADC_FILTER_L
75
R741
20V
D722
OPT
47pF
50V
50V
C734
COMP2_ADC_FILTER
1K
R761
75
R742
5.6V
D726
OPT
5.6V
D725
OPT
47pF
50V
50V
C737
COMP2_ADC_FILTER
470K
R743
12K
R757
CM2012FR10KT
L711
COMP2_ADC_FILTER_L
0 . 1 u F
16V
C739
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
REAR JACKS
7
LA3AA
2 0 1 3 . 0 2 . 2 8
JP_GND
USB2
USB1
OCP for USB_2
REAR COMPONENT/AV
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
R936
EXT_SPK
+3.5V_ST
22.0uH
L904
EXT_SPK
EXT_OUT_L
EXT_OUT_R
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
0 . 1 u F
50V
50V
C915
EXT_SPK
10K
OPT
R932
EXT_OUT_R
SUB_AMP_MUTE
001:AB13
EXT_OUT_L
1uF
10V
C927
EXT_SPK
10K
R931
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
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
4.7K
EXT_SPK
R920
+3.5V_ST
10K
OPT
R921
0 . 4 7 u F
50V
50V
C921
EXT_SPK
0 . 4 7 u F
50V
50V
C919
EXT_SPK
0 . 4 7 u F
50V
50V
C920
EXT_SPK
0 . 4 7 u F
50V
50V
C922
EXT_SPK
1uF
50V
50V
C911
EXT_SPK
1uF
50V
50V
C912
EXT_SPK
RJP / EXT AMP
9
LA2AW
2 0 1 2 . 0 9 . 1 1
EXT_SPEAKER
S i n g l e e n d e d
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