Read LG 32LH70YD (CHASSIS:LJ91D) Service Manual 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.
2008. 10. 15
BCM3556 VIDEO IN
BRAZIL VENUS
B_VID_INCM
14:A3
R145
34
OPT
A2.5V
L105
BLM18PG121SN1D
BCM_I2S_BIT_CLK
3:D3
A2.5V
A3.3V
R128
0
C125
0.1uF
C133
0.1uF
HDMI0_RX2-_BCM
2:AC18
C140
4.7uF
4.7uF
L103
BLM18PG121SN1D
HDMI0_RX0-_BCM
2:AB18
A1.2V
L107
BLM18PG121SN1D
R137
10K
C105
10pF
OPT
L110
BLM18PG121SN1D
COMP1_Y_IN
14:A6
C156
0.1uF
0.1uF
A1.2V
DSUB_B
14:A3
RGB_VSYNC
14:A3
C130
0.1uF
C163
10uF
C108
0.1uF
C126
0.1uF
OPT
A1.2V
R_VID_INCM
14:A4
C112
0.1uF
0.1uF
COMP2_VID_INCM
14:A5
C146
4.7uF
4.7uF
R172
0
OPT
R156
0
OPT
C155
0.1uF
0.1uF
HDMI0_RX1+_BCM
2:AC18
C103
10pF
C154
0.1uF
0.1uF
COMP2_Y_IN
14:A5
R166
0
OPT
C109
0.1uF
OPT
BCM_I2S_DATA_OUT
3:D3
HDMI0_RXC-_BCM
2:AA18
C116
4.7uF
4.7uF
L102
BLM18PG121SN1D
A2.5V
HDMI0_RX2+_BCM
2:AD18
COMP1_VID_INCM
14:A6
C110
0.1uF
R169
0
OPT
C165
10uF
SIDE_CVBS_INCM
14:A5
BCM_I2S_WORD_CLK
3:D3
A1.2V
G_VID_INCM
14:A3
C134
0.1uF
HDMI_HPD_IN_5MA
G5
COMP1_Pb_IN
14:A6
AV1_CVBS_IN
14:A5
C144
0.1uF
R148
0
OPT
C131
0.1uF
D3.3V
R147
0
OPT
A1.2V
L106
BLM18PG121SN1D
BLM18PG121SN1D
R165
0
OPT
C160
0.1uF
0.1uF
COMP2_Pb_IN
14:A5
C101
10pF
C119
0.1uF
DSUB_G
14:A4
R163
0
OPT
R146
10K
C111
0.1uF
C164
10uF
R162
0
OPT
C104
10pF
OPT
C150
0.1uF
0.1uF
COMP1_Pr_IN
14:A5
SIDE_CVBS_IN
14:A5
AV1_CVBS_INCM
14:A5
C157
0.1uF
0.1uF
C113
0.1uF
C124
0.1uF
C151
0.01uF
0.01uF
C145
4.7uF
4.7uF
HDMI0_RX1-_BCM
2:AC18
C117
1000pF
1000pF
C161
0.1uF
0.1uF
R167
0
OPT
C158
1000pF
1000pF
C129
0.1uF
A2.5V
L108
BLM18PG121SN1D
C149
0.01uF
0.01uF
C162
10uF
TU_CVBS_INCM
14:A6
A1.2V
RGB_HSYNC
14:A3
SPDIF_OUT14:A3
C153
0.1uF
0.1uF
R159
0
OPT
C132
0.1uF
C135
0.1uF
C127
0.1uF
R168
0
OPT
R153
499
C152
0.01uF
0.01uF
C102
10pF
R152
499
C120
1000pF
1000pF
C147
0.01uF
0.01uF
R154
0
OPT
HDMI0_RXC+_BCM
2:AB18
R150
0
OPT
TU_CVBS_IN
14:A6
C123
0.01uF
0.01uF
C159
1000pF
1000pF
C106
0.1uF
R164
0
OPT
R155
0
OPT
A2.5V
COMP2_Pr_IN
14:A5
C107
0.1uF
L109
BLM18PG121SN1D
C128
0.1uF
R139
12K
A2.5V
A3.3V
C148
0.01uF
0.01uF
C122
4.7uF
4.7uF
C166
10uF
HDMI0_RX0+_BCM
2:AB18
TU_SIF
14:A6
R149
0
OPT
R151
0
OPT
L104
BLM18PG121SN1D
C118
0.01uF
0.01uF
DSUB_R
14:A4
A2.5V
C121
0.1uF
R119
75
R118
75
R115
75
R141
75
OPT
+5.0V
R2037
10K
OPT
R2038
10K
10K
R2039
C3006
0.1uF
16V
0.1uF
16V
HDMI_SCL
2:AA19
HDMI_SDA
2:AA19
R157
0
R158
0
Q906
ISA1530AC1
E
B
C
HDMI_HPD_IN
9:G4;9:I3
HDMI_HPD_IN_5MA
A2.5V
A2.5V
R3041
270
OPT
R3042
470
OPT
IC100
BCM3556
DS_AGCI_CTL
AG28
DS_AGCT_CTL
AH28
EDSAFE_AVSS_1
AA21
EDSAFE_AVSS_2
AB22
EDSAFE_AVSS_3
AF26
EDSAFE_AVSS_4
AF27
EDSAFE_AVSS_5
AF28
EDSAFE_AVDD2P5
AG27
EDSAFE_DVDD1P2
AE26
EDSAFE_IF_N
AE28
EDSAFE_IF_P
AE27
PLL_DS_AGND
AD24
PLL_DS_AVDD1P2
AB19
PLL_DS_TESTOUT
AB25
SD_V5_AVDD1P2
AB18
SD_V5_AVDD2P5
AC17
SD_V5_AVSS
AB17
SD_V1_AVDD1P2
AD14
SD_V1_AVDD2P5
AD16
SD_V1_AVSS_1
AB15
SD_V1_AVSS_2
AC15
SD_V2_AVDD1P2
AD13
SD_V2_AVDD2P5
AE13
SD_V2_AVSS_1
AC13
SD_V2_AVSS_2
AB14
SD_V2_AVSS_3
AC14
SD_V3_AVDD1P2
AC12
SD_V3_AVDD2P5
AD12
SD_V3_AVSS_1
AB13
SD_V3_AVSS_2
AA14
SD_V4_AVDD1P2
AC11
SD_V4_AVDD2P5
AD11
SD_V4_AVSS
AB12
SD_R
AD10
SD_INCM_R
AC10
SD_G
AE9
SD_INCM_G
AF9
SD_B
AH9
SD_INCM_B
AG9
SD_Y1
AG15
SD_PR1
AE15
SD_PB1
AF15
SD_INCM_COMP1
AH15
SD_Y2
AG16
SD_PR2
AF16
SD_PB2
AH17
SD_INCM_COMP2
AH16
SD_Y3
AG14
SD_PR3
AE14
SD_PB3
AF14
SD_INCM_COMP3
AH14
SD_L1
AH10
SD_C1
AG10
SD_INCM_LC1
AE10
SD_L2
AE11
SD_C2
AF11
SD_INCM_LC2
AH11
SD_L3
AH13
SD_C3
AE12
SD_INCM_LC3
AF12
SD_CVBS1
AD9
SD_CVBS2
AG11
SD_CVBS3
AG12
SD_CVBS4
AF13
SD_INCM_CVBS1
AC9
SD_INCM_CVBS2
AF10
SD_INCM_CVBS3
AH12
SD_INCM_CVBS4
AG13
SD_SIF1
AF17
SD_INCM_SIF1
AG17
SD_FB
AD15
SD_FS
AE16
SD_FS2
AE17
PLL_VAFE_AVDD1P2
AB16
PLL_VAFE_AVSS
AA15
PLL_VAFE_TESTOUT
AC16
RGB_HSYNC
AG3
RGB_VSYNC
AF4
I2S_CLK_IN
AE18
I2S_CLK_OUT
AF18
I2S_DATA_IN
AD17
I2S_DATA_OUT
AH19
I2S_LR_IN
AD18
I2S_LR_OUT
AG18
AUD_LEFT0_N
AG26
AUD_LEFT0_P
AH26
AUD_AVDD2P5_0
AF23
AUD_AVSS_0_1
AA20
AUD_AVSS_0_2
AB21
AUD_AVSS_0_3
AC22
AUD_AVSS_0_4
AC23
AUD_AVSS_0_5
AD23
AUD_RIGHT0_N
AH25
AUD_RIGHT0_P
AG25
AUD_LEFT1_N
AH23
AUD_LEFT1_P
AG23
AUD_RIGHT1_N
AG24
AUD_RIGHT1_P
AH24
AUD_AVDD2P5_1
AE22
AUD_AVSS_1_1
AB20
AUD_AVSS_1_2
AC21
AUD_AVSS_1_3
AE23
AUD_LEFT2_N
AF21
AUD_LEFT2_P
AE21
AUD_RIGHT2_N
AF22
AUD_RIGHT2_P
AG22
AUD_AVDD2P5_2
AD21
AUD_AVSS_2_1
AC20
AUD_AVSS_2_2
AD22
AUD_SPDIF
AH2
SPDIF_AVDD2P5
AC6
SPDIF_AVSS
AE4
SPDIF_IN_N
AF3
SPDIF_IN_P
AH1
HDMI_RX_0_CEC_DAT
AG1
HDMI_RX_0_HTPLG_IN
AA6
HDMI_RX_0_HTPLG_OUT
AA5
HDMI_RX_0_DDC_SCL
AB3
HDMI_RX_0_DDC_SDA
Y6
HDMI_RX_0_RESREF
AC4
HDMI_RX_0_CLK_N
AC1
HDMI_RX_0_CLK_P
AC2
HDMI_RX_0_DATA0_N
AD1
HDMI_RX_0_DATA0_P
AD2
HDMI_RX_0_DATA1_N
AE1
HDMI_RX_0_DATA1_P
AE2
HDMI_RX_0_DATA2_N
AF1
HDMI_RX_0_DATA2_P
AF2
HDMI_RX_0_VDD3P3
AD3
HDMI_RX_0_VDD1P2
AE3
HDMI_RX_0_VDD2P5
AC3
HDMI_RX_0_AVSS_1
AD4
HDMI_RX_0_AVSS_2
AB5
HDMI_RX_0_AVSS_3
AB6
HDMI_RX_0_AVSS_4
AG2
HDMI_RX_0_AVSS_5
AB4
HDMI_RX_0_AVSS_6
AA7
HDMI_RX_0_PLL_AVSS
Y8
HDMI_RX_0_PLL_DVDD1P2
AC5
HDMI_RX_0_PLL_DVSS
W8
HDMI_RX_1_CEC_DAT
AA3
HDMI_RX_1_HTPLG_IN
V4
HDMI_RX_1_HTPLG_OUT
U6
HDMI_RX_1_DDC_SCL
V5
HDMI_RX_1_DDC_SDA
V3
HDMI_RX_1_RESREF
W4
HDMI_RX_1_CLK_N
W2
HDMI_RX_1_CLK_P
W3
HDMI_RX_1_DATA0_N
Y1
HDMI_RX_1_DATA0_P
Y2
HDMI_RX_1_DATA1_N
AA2
HDMI_RX_1_DATA1_P
AA1
HDMI_RX_1_DATA2_N
AB2
HDMI_RX_1_DATA2_P
AB1
HDMI_RX_1_VDD3P3
Y3
HDMI_RX_1_VDD1P2
Y4
HDMI_RX_1_VDD2P5
W5
HDMI_RX_1_AVSS_1
W1
HDMI_RX_1_AVSS_2
U5
HDMI_RX_1_AVSS_3
W6
HDMI_RX_1_AVSS_4
U7
HDMI_RX_1_AVSS_5
V7
HDMI_RX_1_AVSS_6
W7
HDMI_RX_1_AVSS_7
U8
HDMI_RX_1_AVSS_8
V8
HDMI_RX_1_AVSS_9
Y5
HDMI_RX_1_PLL_AVSS
V6
HDMI_RX_1_PLL_DVDD1P2
AA4
HDMI_RX_1_PLL_DVSS
Y7
R2035
0
R2036
1K
1K
R188
10K
R120
91
R
1
4
0
9
1
R129
91
R
1
3
5
9
1
R
1
3
8
9
1
R127
91
R142
91
R143
91
R3055
240
240
A2.5V
R4020
10K
R4021
12K
C4020
0.1uF
R3056
120
11
15
JANG.J.H.
CONNECT NEAR BCM CHIP
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