Read LG 42LH70YR (CHASSIS:LP91D) 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.
1K
R889
56
AR806
47
R817
470
R835
0.1uF
C805
0.047uF
C829
100
R882
0
R812
4.7uF
C820
10
R848
0.1uF
C849
47
R804
+3.3V_MULTI_MST
+3.3V_MULTI_MST
10K
R8003
56
AR805
0.01uF
C863
100
R8023
0.01uF
C839
22
R8006 HDCP_READY
33
AR818
AR818
0.01uF
C803
47
R837
10
R874
+3.3V_MULTI_MST
0.01uF
C840
33
R843
10
R871
MNT_VOUT
+3.3V_MST
10
R891
390
R840
47
R815
100
R
80
14
READY
MNT_VOUT_T
4.7K
R8028
0.047uF
C855
56
AR813
AR813
RT1C3904-T112
Q802
E
B
C
0.1uF
C844
56
AR810
402
R807 READY
10
R862
+1.8V_DDR
10
R879
56
AR812
AR812
1000pF
C835
0.047uF
C828
0.047uF
C851
0.1uF
C853
1K
R868
4.7K
R8004
HDCP_READY
+3.3V_MULTI_MST
100
R881
0.047uF
C826
SPI_DI
+1.2V_VDDC_MST
1000pF
C818
0.047uF
C832
100
R8024
10
R892
100
R825
10
R880
0.1uF
C806
100
R824
10
R841
+1.8V
0.01uF
C859
0.01uF
C876
220
R808
47
R834
4.7K
R877
+3.3V_MULTI_MST
+12V_AUDIO
100
R850
4.7K
R878
100
R828
56
R852
+3.3V_MST
0.047uF
C837
4.7K
R864
0.1uF
C804
56
AR800
AR800
470
R809
1 M
R839
R839
100
R8017
0.1uF
C848
+3.3V_MULTI_MST
4.7K
R8010
READY
0
R8034
10
R858
10
R872
1K
R883
10
R820
22K
R842
1K
R811
READY
10
R873
+3.3V_MULTI_MST
SPI_CLK
100
R827
0.1uF
C883
CAT24WC08W-T
IC803
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
+3.3V_MULTI_MST
22
R8005 HDCP_READY
+5VST_MST
0.047uF
C827
EEP_SDA
56
AR809
1K
R867
100
R8025
100
R847
READY
68
R810
4.7K READY
R896
22K
R845
47
R832
EEP_SCL
+1.8V
100
R895
EEP_SCL
10
R854
10
R823
DDR2_A[0-12]
4.7K
R865
0.01uF
C864
SPI_DO
10K
R8020
0.01uF
C858
0.047uF
C831
0
R8035
0.01uF
C810
10
R869
10
R851
10
R801
10
R890
10
R822
0.01uF
C841
4.7K
R866
0.1uF
C819
0.047uF
C825
0.1uF
C811
1K
R884
READY
100
R849
+1.2V_VDDC_MST
0.1uF
C869
56
AR814
AR814
0.1uF
C842
56
AR815
AR815
0.1uF
C833
100
R8016
4.7K
R863
100
R
80
15
READY
0.1uF
C838
0.047uF
C834
10
R856
0.1uF
C882
4.7K
R898
0.1uF
C808
0
R813
0.01uF
C865
0.01uF
C860
100
R826
0
R8033
R EA
D Y
100
R829
100
R846
READY
0.047uF
C830
MX25L6405DMI-12G
IC802
3
NC_1
2
VCC
4
NC_2
1
HOLD
6
NC_4
5
NC_3
7
CS
8
SO/SIO1
9
WP/ACC
10
GND
11
NC_5
12
NC_6
13
NC_7
14
NC_8
15
SI.SIO0
16
SCLK
EEP_SDA
+1.2V_VDDC_MST
4.7K
R8011
12MHz
X801
X801
0.01uF
C850
+3.3V_MULTI_MST
100
R8026
0.1uF
C813
10
R821
0.01uF
C807
10
R859
DDC_WP
0.1uF
C815
47
R838
4.7K
R8027
24LC256-I/SM
IC801
24C64_Normal
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
SPI_CZ
33
R844
+3.3V_MULTI_MST
DDR2_D[0-15]
0.047uF
C852
0.01uF
C862
100
R8012
1K
R8038
100
R8039
100
R8040
15pF
C816
15pF
C817
22K
R8002
0.01uF
C877
22K
R8009
0.01uF
C878
10uF1
6V
C809
470
R819
1000pF
C854
0.01uF
C879
0.01uF
C880
0.01uF
C881
2.2uF
C861
2.2uF
C801
2.2uF
C856
2.2uF
C822
2.2uF
C802
2.2uF
C824
2.2uF
C872
2.2uF
C874
2.2uF
C873
2.2uF
C823
2.2uF
C821
2.2uF
C875
0
R894
47
R818
47
R816
47
R814
470
R803
0.047uF
C836
0.1uF
C868
0.047uF
C843
0.047uF
C847
0.047uF
C845
1000pF
C846
47
R875
10
R857
10
R802
10
R897
47
R833
47
R836
0.01uF
C857
10
R830
10
R831
47
R876
ISA1530AC1
Q801
E
B
C
4.7uF
C812
100
R888
RL_ON
47uF
25
V
C870
KDS181
D802
+5VST_MST
2.2uF 16V
C8000
READY
KDS181
D801
33K
R887
1K
R860
ISA1530AC1
Q800
E
B
C
+5VST_MST
MULTI_PW_SW
RT1C3904-T112
Q803
E
B
C
150
R885
KDS181
D803
JTP-1127WEM
SW800
1
2
4
3
0.1uF
C814
10K
R855
SYS_RESET
POWER_DET
10K
R8000
+5VST_MST
33K
R8007
10K
R8036
READY
RT1C3904-T112
Q804
E
B
C
0
R800
0
R8001
READY
P_12V
P_16V
1K
R8018
0
R8013
0
R899
47
R8041
TMDS2_RXC- TMDS2_RXC+ TMDS2_RX0- TMDS2_RX0+
TMDS2_RX1- TMDS2_RX1+
TMDS2_RX2- TMDS2_RX2+ TMDS1_RXC- TMDS1_RXC+ TMDS1_RX0- TMDS1_RX0+
TMDS1_RX1-
TMDS1_RX1+
TMDS1_RX2-
TMDS1_RX2+
HPD_MST_2
HPD_MST_1
PC_B PC_G
PC_R
COMP1_PB
COMP1_Y
COMP1_PR
COMP2_PB
COMP2_Y
COMP2_PR
CVBS_VIN
SIDE_V
TV_MAIN
MAIN_SIF
SIDE_LIN
SIDE_RIN
MNT_R_AMP
MNT_L_AMP
MNT_VOUT_T
CVBS_LIN
CVBS_RIN
COMP1_L
COMP1_R
COMP2_L
COMP2_R
PC_AUD_L
PC_AUD_R
TMDS3_RXC-
TMDS3_RXC+
TMDS3_RX0-
TMDS3_RX0+
TMDS3_RX1-
TMDS3_RX1+
TMDS3_RX2-
TMDS3_RX2+
HPD_MST_3
USB_DN
USB_DP
SPI_CLK
SPI_DI
SPI_DO
SPI_CZ
MEMC_RXEC+
MEMC_RXE3-
MEMC_RXE2-
MEMC_RXE3+
MEMC_RXE0-
MEMC_RXE2+
MEMC_RXE0+
I-DIM
MEMC_RXE4+
MEMC_RXE4-
MEMC_RXE1-
E-DIM
MEMC_RXE1+
MEMC_RXEC-
DDC_SDA2
DSUB_SDA
DDC_SCL1
DDC_SDA1
DDC_SCL2
DSUB_SCL
DDC_SCL3
DDC_SDA3
MEMC_RXO2+
MEMC_RXO1+
MEMC_RXO4-
MEMC_RXO0+
MEMC_RXO2-
MEMC_RXOC+
MEMC_RXOC-
MEMC_RXO3+
MEMC_RXO0-
MEMC_RXO3-
MEMC_RXO1-
MEMC_RXO4+
DDC_WP
SW_RESET
DISP_EN/VAVS_ON
PANEL_ON
SUB_SDA
SUB_SCL
MUTE_LINE
DDR2_DQM1
DDR2_DQM0
DDR2_DQS0P
DDR2_DQS0M
DDR2_DQS1P
DDR2_DQS1M
DDR2_MCLKZ DDR2_MCLK
DDR2_ODT
DDR2_RASZ
DDR2_RASZ
DDR2_CASZ
DDR2_BA0
DDR2_BA1
DDR2_WEZ
DDR2_CKE
I2S_MCLK
I2S_WS
I2S_SCK
I2S_SDO
I2S_SDO
RL_ON
TXD
EEP_SDA
RXD
EEP_SCL
KEY2
KEY1
POWER_DET
BLT_DN
BLT_DP
SYS_RESET
CEC_C
IR
PC_HS
PC_VS
DSUB_SDA
RXD
TXD
M_SCL
M_SDA
POWER_SW
10
R805
100
R893
0
R870
100
R8022
100
R8021
PANEL_STATUS
47
R8042
0.047uF
C8002
47
R8019
0.047uF
C8001
SIDE_Y
SIDE_C
MEMC_RESET
0
R8008
OPC_EN
0
R806
MODEL_OPT1
MODEL_OPT2
MODEL_OPT1
MODEL_OPT2
+3.3V_AVDD_AU
+3.3V_MULTI_MST
0.1uF
C867
10uF
16V
C866
+3.3V_AVDD_33_DM
+3.3V_LPLL_VDDP
+3.3V_AVDD_33_DM
+3.3V_AVDD_AU
+3.3V_LPLL_VDDP
+3.3V_AVDD_33_DM
3.3K
R8029
2K
R886
1K
R8030
R EA
D Y
RT1C3904-T112
Q805
E
B
C
DDC_WP
10K
R8031
1K
R853
S_VIDEO_DET
4.7K
R8032
4.7uF
10V
C871
READY
0
R8037
1K
R861
SPK_N
SPK_N
0
R8043
0
R8044
0
R8045
READY
0 R8046 READY
LGE3767A [MST99A88ML(MATRIX ONLY SD DIVX_ NON RM) ]
EAN60658901
IC800
1
RXBCKN
2
RXBCKP
3
RXB0N
4
RXB0P
5
HOTPLUGB
6
RXB1N
7
RXB1P
8
AVDD_33_1
9
RXB2N
10
RXB2P
11
RXACKN
12
RXACKP
13
RXA0N
14
RXA0P
15
AVDD_33_2
16
RXA1N
17
RXA1P
18
GND_1
19
RXA2N
20
RXA2P
21
HOTPLUGA
22
REXT
23
VCLAMP
24
REFP
25
REFM
26
BIN1P
27
SOGIN1
28
GIN1P
29
RIN1P
30
BINM
31
BIN0P
32
GINM
33
GIN0P
34
SOGIN0
35
RINM
36
RIN0P
37
AVDD_33_3
38
GND_2
39
BIN2P
40
GIN2P
41
SOGIN2
42
RIN2P
43
CVBS6
44
CVBS5
45
CVBS4
46
CVBS3
47
CVBS2
48
CVBS1
49
VCOM1
50
CVBS0
51
VCOM0
52
AVDD_33_4
53
CVBSOUT
54
GND_3
55
SIF0P
56
SIF0M
57
VDDC_1
58
AUL5
59
AUR5
60
AUVRM
61
AUOUTL2
62
AUOUTR2
63
AUOUTL1
64
AUOUTR1
65
AUL0
66
A U
R 0
67
AUL1
68
A U
R 1
69
AUL2
70
A U
R 2
71
AUL3
72
A U
R 3
73
A U
C O
M
74
AUL4
75
A U
R 4
76
GND_4
77
A U
V R
P
78
A U
V A
G
79
A V
D D
_ A
U
80
GND_5
81
VDDC_2
82
D D
C A
_ C
K
83
D D
C A
_ D
A
84
D D
C D
A _C
K
85
D D
C D
A _D
A
86
D D
C D
B _C
K
87
D D
C D
B _D
A
88
GPIO20
89
VDDP_1
90
VDDC_3
91
UART2_RX
92
UART2_TX
93
D D
C D
C _C
K
94
R X
C C
K N
95
R X
C C
K P
96
D D
C D
C _D
A
97
R X
C 0N
98
RXC0P
99
GND_6
100
R X
C 1N
101
RXC1P
102
A V
D D
_ D
M
103
R X
C 2N
104
RXC2P
105
H O
T PL
U G
C
106
U SB
1 _D
M
107
USB1_DP
108
S C
K
109
SDI
110
S D
O
111
SCZ
112
P W
M 0
113
P W
M 1
114
P W
M 2
115
P W
M 3
116
LVA4P
117
L V
A 4M
118
LVA3P
119
L V
A 3M
120
L V
A C
K P
121
L V
A C
K M
122
LVA2P
123
L V
A 2M
124
LVA1P
125
L V
A 1M
126
LVA0P
127
L V
A 0M
128
VDDP_2
129
LVB4P
130
LVB4M
131
LVB3P
132
LVB3M
133
LVBCKP
134
LVBCKM
135
LVB2P
136
LVB2M
137
LVB1P
138
LVB1M
139
LVB0P
140
LVB0M
141
AVDD_LPLL
142
GND_7
143
VDDC_4
144
GPIO150/I2C_OUT_MUTE
145
GPIO151/I2C_OUT_SD2
146
GPIO152/I2C_OUT_SD3
147
GND_8
148
GPIO51
149
GPIO52
150
GPIO53
151
GPIO54
152
GPIO55
153
GPIO56
154
GPIO57
155
GPIO58
156
VDDP_3
157
VDDC_5
158
B_MDATA[4]
159
B_MDATA[3]
160
GND_9
161
B_MDATA[1]
162
B_MDATA[6]
163
AVDD_DDR_1
164
B_MDATA[11]
165
B_MDATA[12]
166
GND_10
167
B_MDATA[9]
168
B_MDATA[14]
169
AVDD_DDR_2
170
B_DDR2_DQM[1]
171
B_DDR2_DQM[0]
172
GND_11
173
B_DDR2_DQS[0]
174
B_DDR2_DQSB[0]
175
AVDD_DDR_3
176
VDDP_4
177
GND_12
178
B_DDR2_DQS[1]
179
B_DDR2_DQSB[1]
180
AVDD_DDR_4
181
B_MDATA[15]
182
B_MDATA[8]
183
GND_13
184
B_MDATA[10]
185
B_MDATA[13]
186
AVDD_DDR_5
187
B_MDATA[7]
188
B_MDATA[0]
189
B_MDATA[2]
190
B_MDATA[5]
191
B_MCLK
192
B_MCLKZ
193
GND_14
194
A V
D D
_ M
E M
P LL
195
M V
R EF
196
A _O
D T
197
A_RASZ
198
A_CASZ
199
A_MADR[0]
200
A_MADR[2]
201
A_MADR[4]
202
GND_15
203
A_MADR[6]
204
A_MADR[8]
205
A_MADR[11]
206
A _W
E Z
207
A_BADR[1]
208
A_BADR[0]
209
A_MADR[1]
210
A_MADR[10]
211
A V
D D
_ D
D R
_ 6
212
A_MADR[5]
213
A_MADR[9]
214
A_MADR[12]
215
A_MADR[7]
216
A_MADR[3]
217
A _M
C LK
E
218
VDDC_6
219
I2S_IN_WS/GPIO67
220
I2S_IN_BCK/GPIO68
221
I2S_IN_SD
222
I2S_OUT_MCK
223
I2S_OUT_WS
224
VDDP_5
225
GND_16
226
VDDC_7
227
I2S_OUT_BCK
228
I2S_OUT_SD
229
SPDIFO
230
UART2_RX/I2CM_SDA
231
UART2_TX/I2CM_SCK
232
UART1_RX/GPIO86
233
UART1_TX/GPIO87
234
GND_17
235
GND_18
236
U SB
0 _D
M
237
USB0_DP
238
SAR0
239
SAR1
240
SAR2
241
SAR3
242
A V
D D
_ M
P LL
243
X O
U T
244
XIN
245
GPIO134
246
GPIO135
247
GPIO138
248
GPIO139
249
GPIO140
250
IRIN
251
H SY
N C
0
252
V SY
N C
0
253
H SY
N C
1
254
V SY
N C
1
255
C E
C
256
H W
R ES
E T
MEMC_RESET
MLB-201209-0120P-N2
L800
MLB-201209-0120P-N2
L801
MLB-201209-0120P-N2
L802
DDR2_A[10]
DDR2_A[2]
DDR2_A[8]
DDR2_A[7]
DDR2_D[10]
DDR2_A[11]
DDR2_D[1]
DDR2_A[4]
DDR2_D[4]
DDR2_D[0]
DDR2_A[1]
DDR2_A[0]
DDR2_D[14]
DDR2_A[3]
DDR2_D[12]
DDR2_D[15]
DDR2_D[9]
DDR2_D[2]
DDR2_D[11]
DDR2_D[5]
DDR2_A[9]
DDR2_A[12]
DDR2_D[6]
DDR2_A[5]
DDR2_D[3]
DDR2_D[7]
DDR2_D[13]
DDR2_A[6]
DDR2_D[8]
EAX58298501 Mstar LCD LH70
R8016:DSP_BSY
R8017:DSP_IRQ
I2S_OUT
SERIAL FLASH 8M
GAIN X 4
HDMI_1
HDCP EEPROM READY
[MODE SELECTION]
USB PART
C804/C805/C806:Close to IC as close as possible
Close to IC as close as possible
HDMI_2
EEPROM
Clo
se
to
I
C
wit
h w
id
th
tr
ac
e
HDMI_3
5 9
MAIN Mstar
H6 LH70
2008/09/20
RESET
R8011
4.7K
4.7K
4.7K
4.7K
4.7K
X
X
R896
X
4.7K
Apollo
Small HD(19/22)
100HZ
X
4.7K
X
4.7K
4.7K
4.7K
X
4.7K
Non Small HD
X
**H/W OPTION
4.7K
Small FHD (27)
R8010
X
X
4.7K
Non Small FHD
R898
X
4.7K
Close to IC Pin
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