LG 42LN541C (CHASSIS:LA3AA) Service Manual ▷ View online
- 21 -
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
A2
A10
900
200
400
540
521
530
500
910
120
300
510
123
122
Set + Stand
LV
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.
C262
22pF
HPD1
R4027
1K
OLED
IR
10uF
C284
R287
1M
AVDD_AU33
10uF
C228
L229
BLM18PG121SN1D
R4002
47
R244
33
C258
0.1uF
HALF_NIM/EU_NON_T2
R212
1K
PHM_OFF
D0+_HDMI4
L204
BLM18PG121SN1D
C240
0.1uF
0.1uF
+1.5V_DDR
TU_SDA
C257
0.1uF
HALF_NIM/EU_NON_T2
MODEL_OPT_0
TP208
C274
0.1uF
C4046
0.1uF
R291
1K
120HZ
R4028
1K
DVB_S
IF_P_MSTAR
AVDD2P5
C249
4.7uF
C4067
OPT
HDMI_ARC
R288
100
HALF_NIM/EU_NON_T2
L208
BLM18PG121SN1D
AUD_LRCK
C4062
0.1uF
D2+_HDMI4
L228
BLM18PG121SN1D
+1.10V_VDDC
D0+_HDMI2
MODEL_OPT_3
AVDD2P5_MOD
+1.10V_VDDC
MIUVDDC
C4070
0.1uF
16V
0.1uF
16V
D1+_HDMI2
D1+_HDMI1
+3.3V_Normal
DDC_SCL_4
DDC_SCL_2
AVDD_NODIE
D2-_HDMI1
PM_MODEL_OPT_1
C261
22pF
D2+_HDMI1
IF_N_MSTAR
R290
1K
OS_DualStream(O)/NonOS_ErrorOut(X)
CK+_HDMI1
MODEL_OPT_5
R200
62K
R210
33
HDMI1_ARC
AVDD25_PGA
L219
BLM18PG121SN1D
R246
33
C4068
100pF
HALF_NIM/EU_NON_T2
R289
100
HALF_NIM/EU_NON_T2
D1-_HDMI1
VDD33
D1-_HDMI2
AUD_LRCH
C269
10uF
10uF
D1+_HDMI4
C201
0.1uF
C250
0.1uF
C231
0.047uF
HDMI1_ARC
R4004
0
HALF_NIM/EU_NON_T2
R293
1K
OS_DualStream(X)/NonOS_ErrorOut(O)
R227
1K
FHD
R4039
100
OPT
CK-_HDMI1
R294
1K
NON_120HZ
C283
0.1uF
HPD2
D0+_HDMI1
HPD4
VDD33
C256
0.1uF
0.1uF
R4001
0
OPT
+2.5V_Normal
AVDD_AU33
MODEL_OPT_1
R226
1K
HD
R207
1K
NON_3D
R209
1K
NON_DVB_T2
D2-_HDMI2
C203
1000pF
OPT
R252
68
DDC_SCL_1
MODEL_OPT_4
+1.10V_VDDC
+3.5V_ST
C252
0.1uF
0.1uF
C4043
0.1uF
CK+_HDMI2
TU_SIF
L227
BLM18PG121SN1D
HALF_NIM/EU_NON_T2
AVDD2P5_MOD
VDD33
C4027
0.1uF
0.1uF
AVSS_PGA
CK-_HDMI4
D0-_HDMI4
C264
1000pF
OPT
CK+_HDMI4
AVSS_PGA
VDD33
AV_CVBS_IN
C4025
0.1uF
L206
BLM18PG121SN1D
L211
BLM18PG121SN1D
AMP_SCL
AUD_SCK
D0-_HDMI2
C4065
0.047uF
25V
0.047uF
25V
HALF_NIM/EU_NON_T2
D1-_HDMI4
C278
10uF
AVDD_MIU
C4009
0.1uF
D0-_HDMI1
CK-_HDMI2
C273
0.1uF
MODEL_OPT_6
SOC_RESET
USB1_DP
C4069
100pF
HALF_NIM/EU_NON_T2
10uF
C275
R4029
1K
NON_OLED
C227
0.047uF
C233
0.047uF
R4003
47
C4045
1uF
MODEL_OPT_2
AVDD2P5
+3.3V_Normal
C251
0.1uF
AVDD_NODIE
C4071
10uF
C4038
0.1uF
DDC_SDA_4
R206
1K
3D
TU_CVBS
C263
10uF
10uF
C225
0.047uF
C4064
0.1uF
HALF_NIM/EU_NON_T2
CEC_REMOTE_S7
AUD_MASTER_CLK_0
R4019
10K
HALF_NIM/EU_NON_T2
L209
BLM18PG121SN1D
AMP_SDA
L203
EXT_SPK
5.6uH
L223
BLM18SG121TN1D
C4020
0.1uF
L202
BLM18SG121TN1D
+3.3V_Normal
IF_AGC_MAIN
D2-_HDMI4
MODEL_OPT_7
+1.10V_VDDC
DDC_SDA_1
R211
1K
PHM_ON
TU_SCL
USB1_DM
10uF
C4001
DDC_SDA_2
C4044
0.1uF
C4012
0.1uF
R4030
1K
NON_DVB_S
MIUVDDC
C241
0.1uF
0.1uF
X201
24MHz
24MHz
C286
0.1uF
0.1uF
SOC_RESET
AVDD_MIU
AVDD25_PGA
R208
1K
DVB_T2
FB_CORE
L205
EXT_SPK
5.6uH
D2+_HDMI2
+3.3V_Normal
+2.5V_Normal
FB_CORE
C200
4.7uF
10V
+3.5V_SOC_RESET
R217
10
C4042
1uF
C280
1uF
C277
1uF
C253
1uF
IC101
LGE2111A-T8
S7LR2_DIVX_MS10
RXACKP
J2
RXACKN
J3
RXA0P
K3
RXA0N
J1
RXA1P
K2
RXA1N
K1
RXA2P
L2
RXA2N
L3
DDCDA_DA/GPIO24
T5
DDCDA_CK/GPIO23
T4
HOTPLUGA/GPIO19
V5
HOTPLUGB/GPIO20
R5
RXCCKP
AE9
RXCCKN
AC9
RXC0P
AC10
RXC0N
AD9
RXC1P
AC11
RXC1N
AD10
RXC2P
AE11
RXC2N
AD11
DDCDC_DA/GPIO28
AE8
DDCDC_CK/GPIO27
AD8
HOTPLUGC/GPIO21
AC8
RXDCKP
F2
RXDCKN
F3
RXD0P
G3
RXD0N
F1
RXD1P
G2
RXD1N
G1
RXD2P
H2
RXD2N
H3
DDCDD_DA/GPIO30
R6
DDCDD_CK/GPIO29
U6
HOTPLUGD/GPIO22
P5
CEC/GPIO5
R4
HSYNC0
P2
VSYNC0
R3
RIN0P
N2
RIN0M
P3
GIN0P
N3
GIN0M
N1
BIN0P
M3
BIN0M
M2
SOGIN0
M1
HSYNC1
V2
VSYNC1
V3
RIN1P
U3
RIN1M
U2
GIN1P
T1
GIN1M
T2
BIN1P
R2
BIN1M
R1
SOGIN1
T3
HSYNC2
AA2
RIN2P
Y2
RIN2M
AA3
GIN2P
W2
GIN2M
Y3
BIN2P
V1
BIN2M
W3
SOGIN2
W1
CVBS0
AA8
CVBS1
Y4
CVBS2
W4
CVBS3
AA5
CVBS4
Y5
CVBS5
AA4
CVBSOUT0
Y6
CVBSOUT1
AA1
VCOM
AB4
VIFP
AC4
VIFM
AD3
IP
AC3
IM
AE3
SIFP
AD4
SIFM
AC5
IF_AGC
AD2
RF_AGC
AE2
I2C_SCKM1/GPIO75
AE6
I2C_SDAM1/GPIO76
AD6
XIN
AD1
XOUT
AC1
SPDIF_IN/GPIO152
D7
SPDIF_OUT/GPIO153
D6
USB0_DM
E3
USB0_DP
E2
USB1_DM
AC12
USB1_DP
AE12
I2S_IN_BCK/GPIO150
C8
I2S_IN_SD/GPIO151
D8
I2S_IN_WS/GPIO149
D9
I2S_OUT_BCK/GPIO156
B10
I2S_OUT_MCK/GPIO154
C9
I2S_OUT_SD/GPIO157
B9
I2S_OUT_WS/GPIO155
C10
AUL0
AB9
AUR0
AA11
AUL1
Y9
AUR1
AA9
AUL2
AA7
AUR2
AB8
AUL3
Y8
AUR3
Y10
AUL4
AC7
AUR4
AD7
AUOUTL0
W6
AUOUTL2
V6
AUOUTL3
V4
AUOUTR0
Y7
AUOUTR2
W5
AUOUTR3
U5
AUVRM
AD5
AUVAG
AE5
AUVRP
AC6
EARPHONE_OUTL
AA6
EARPHONE_OUTR
AB6
ET_RXD[0]/RP/GPIO60
C6
ET_TXD[0]/TP/GPIO57
C5
ET_RXD[1]/RN/GPIO63
A6
ET_TXD[1]/LED1/GPIO56
C4
ET_TX_CLK/TN/GPIO59
B5
ET_TX_EN/GPIO58
C3
ET_MDC/GPIO61
A3
ET_MDIO/GPIO62
B3
ET_COL/LED0/GPIO55
B4
IRIN/GPIO4
N4
ARC0
T6
HWRESET
N5
IC101
LGE2111A-T8
S7LR2_DIVX_MS10
AVDDLV_USB
K12
VDDC_1
G9
VDDC_2
H9
VDDC_3
K10
VDDC_4
K11
VDDC_5
L10
VDDC_6
M12
VDDC_7
M13
VDDC_8
N12
VDDC_9
P14
VDDC_10
P15
VDDC_11
R10
VDDC_12
R14
VDDC_13
R15
VDDC_14
T10
AVDD1P0
P10
FB_CORE
P19
AVDDL_MOD
R16
AVDD10_LAN
L11
DVDD_DDR
M14
AVDD2P5_ADC_1
W9
AVDD2P5_ADC_2
W10
AVDD2P5_ADC_3
W11
AVDD25_REF
W12
AVDD25_LAN
Y17
AVDD_MOD_1
V18
AVDD_MOD_2
U19
AVDD25_PGA
W14
AVSS_PGA
W15
AVDD_NODIE
U7
AVDD_DVI_USB_1
L7
AVDD_DVI_USB_2
M7
AVDD3P3_MPLL
P7
AVDD_DMPLL
R7
DVDD_NODIE
M19
AVDD_AU33
V7
AVDD_EAR33
W7
VDDP_1
R19
VDDP_2
T19
AVDD_LPLL_1
W18
AVDD_LPLL_2
W19
VDDP_NAND
V19
AVDD_DDR0_D_1
J17
AVDD_DDR0_D_2
K15
AVDD_DDR0_D_3
K16
AVDD_DDR0_C
L15
AVDD_DDR1_D_1
K17
AVDD_DDR1_D_2
L17
AVDD_DDR1_D_3
M17
AVDD_DDR1_C
L16
GND_EFUSE
E9
GND_1
A23
GND_2
B17
GND_3
C23
GND_4
A5
GND_5
C11
GND_6
C19
GND_7
C22
GND_8
D14
GND_9
D18
GND_10
D19
GND_11
E17
GND_12
E18
GND_13
E19
GND_14
E22
GND_15
F8
GND_16
F17
GND_17
F18
GND_18
F19
GND_19
G8
GND_20
H8
GND_21
N22
GND_22
N21
GND_23
N20
GND_24
M22
GND_25
M21
GND_26
M20
GND_27
F10
GND_28
V15
GND_29
W16
GND_30
V8
GND_31
T18
GND_32
G10
GND_33
G11
GND_34
G12
GND_35
G13
GND_36
G14
GND_37
G17
GND_38
G18
GND_39
G19
GND_40
G24
GND_41
H11
GND_42
H12
GND_43
H13
GND_44
H14
GND_45
H15
GND_46
H16
GND_47
H17
GND_48
H18
GND_49
H19
GND_50
J9
GND_51
J10
GND_52
J11
GND_53
J12
GND_54
J13
GND_55
J14
GND_56
J15
GND_57
J16
GND_58
J18
GND_59
J19
GND_60
J25
GND_61
K9
GND_62
K13
GND_63
K14
GND_64
H10
GND_65
K18
GND_66
K19
GND_67
K22
GND_68
L8
GND_69
L9
GND_70
J8
GND_71
L12
GND_72
L13
GND_73
L18
GND_74
L19
GND_75
M8
GND_76
K8
GND_77
M10
GND_78
M11
GND_79
L14
GND_80
M15
GND_81
M16
GND_82
M18
GND_83
M25
GND_84
N10
GND_85
N11
GND_86
N13
GND_87
N14
GND_88
N15
GND_89
N16
GND_90
N17
GND_91
N19
GND_92
K7
GND_93
P8
GND_94
P9
GND_95
M9
GND_96
P11
GND_97
P13
GND_98
P16
GND_99
P17
GND_100
P18
GND_101
P12
GND_102
R8
GND_103
R9
GND_104
R11
GND_105
R12
GND_106
R13
GND_107
R17
GND_108
T8
GND_109
T9
GND_110
N7
GND_111
T11
GND_112
T12
GND_113
T13
GND_114
T14
GND_115
T15
GND_116
T16
GND_117
T17
GND_118
U8
GND_119
U9
GND_120
U10
GND_121
U11
GND_122
U12
GND_123
U13
GND_124
U14
GND_125
U15
GND_126
U16
GND_127
U17
GND_128
R18
GND_129
V9
GND_130
V10
GND_131
V11
GND_132
V12
GND_133
V14
GND_134
V17
GND_135
T7
GND_136
E8
C4068-*1
68pF
68pF
HALF_NIM/ASIA
C4069-*1
68pF
68pF
HALF_NIM/ASIA
EXT_AMP_L
EXT_AMP_R
AV_COMP_PC_L_IN
AV_COMP_PC_R_IN
L268
4.7uF
10V
4.7uF
10V
OPT
L272
4.7uF
10V
4.7uF
10V
OPT
R201
0
0
EXT_SPK
R202
0
0
EXT_SPK
R4024 510
DSUB_R+
DSUB_G+
DSUB_VSYNC
C205
0.047uF
C207
0.047uF
C210
1000pF
R228
33
R4026
10K
C206
0.047uF
R229
68
R4023
2.4K
R233
68
R231
68
C209
0.047uF
R232
33
DSUB_HSYNC
C208
0.047uF
C204
0.047uF
R4025 510
DSUB_B+
R230
33
OPC&SCANNING_CTRL
C247
2.2uF
C246
2.2uF
USB2_DM
USB2_DP
R213
100
SPDIF_OUT
R203
100
RF_SW_BR_OPT
RF_SWITCH_CTL
R204
0
OPT
R214
0
OPT
R205
100
100
SWICH
SW200
JTP-1127WEM
SWICH
1
2
4
3
+3.5V_ST
R215
470
RESET_IC_SOC_RESET
C202
4.7uF
10V
RESET_IC_SOC_RESET
POWER_DET_RESET
POWER,IN/OUT,H/W OPT
2
MODEL OPTION
NON_3D
AB3
PIN NO.
MODEL_OPT_3
DVB_T2
DTV_IF
Close to MSTAR
MODEL_OPT_7
AVDD_DDR1:55mA
DVB_S
U23
OLED
PHM_ON
MODEL_OPT_1
DDR3 1.5V
PIN NAME
SOC_RESET
I2S_I/F
3D
TUNER_I2C
NON_DVB_T2
HDMI
AVDD25_PGA:13mA
NON_DVB_S
AB2
120HZ
AUDIO IN
LOW
HIGH
CVBS In/OUT
ANALOG SIF
Close to MSTAR
B8
A8
PHM_OFF
Close to MSTAR
MODEL_OPT_2
F4
Normal 2.5V
MODEL_OPT_6
STby 3.5V
MODEL_OPT_5
NON_OLED
NON_120HZ
Close to IC with width trace
MODEL OPTION
T25
T24
FHD
Normal Power 3.3V
HD
MODEL_OPT_4
MODEL_OPT_0
AVDD_NODIE:7.362mA
Close to MSTAR
NonOS:ErrorOut
OS:NON_DualStream OS:DualStream
NonOS:NON_ErrorOut
* Dual Stream is only Korea 3D spec
EXT SPEAKER
DSUB
LA2AW
2012.09.11
AVDD_DDR0:55mA
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
R304
0
OPT
Q301
MMBT3904(NXP)
MMBT3904(NXP)
OPT
E
B
C
SPI_SCK
C301
0.1uF
0.1uF
S_FLASH_OS
SPI_SDI
/FLASH_WP
IC301
MX25L8006EM2I-12G
S_FLASH_OS_MACRONIX
3
WP#
2
SO/SIO1
4
GND
1
CS#
5
SI/SIO0
6
SCLK
7
HOLD#
8
VCC
SPI_SDO
R303
33
S_FLASH_OS
R302
4.7K
OPT
+3.5V_ST
+3.5V_ST
R301
10K
10K
OPT
+3.5V_ST
IC301-*1
W25Q80BVSSIG
S_FLASH_OS_WINBOND
3
%WP[IO2]
2
DO[IO1]
4
GND
1
CS
5
DI[IO0]
6
CLK
7
HOLD[IO3]
8
VCC
3
Serial FLASH
Serial Flash for SPI boot_NON_OS and OS
LA2AW
2012.09.11
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