LG 47LH90QR (CHASSIS:LP91C) 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.
SIDE_RIN
SIDE_LIN
5 . 6 B
ZD202
SIDE_V
5 . 6 B
ZD203
CDS3C30GTH
30V
D121
IR_OUT
RXD
ST3232CDR
IC101
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
T2OUT
8
R2IN
9
R2OUT
10
T2IN
11
T1IN
12
R1OUT
13
R1IN
14
T1OUT
15
GND
16
VCC
TXD
CDS3C30GTH
30V
D122
+3.3V_MST
KCN-DS-1-0088
JK103
1
2
3
4
5
6
7
8
9
10
+3.3V_MST
USB DOWN STREAM
KJA-UB-4-0004
P200
1
2
3
4
5
USB_DP
USB_DN
30V
D205
30V
D206
0.1uF
C109
0.1uF
C107
0.1uF
C108
0.1uF
C205
100
R145
100
R144
4.7K
R206
4.7K
R207
0
R200
0
R201
0
Non_OCP
R202
+5V_USB
500
L200
10uF 6.3V
C201
120OHM OCP
L202
4.7K
OCP
R205
1KOCP
R204
MIC2009YM6-TR
OCP
IC201
3
ENABLE
2
GND
4 FAULT/
1
VIN
6 VOUT
5 ILIMIT
0.1uF
OCP
C203
10uF
OCP
C204
30V
D208
30V
D207
J P 2 0 1
J P 2 0 0
J P 2 0 2
220uF16V
C200
100uF 16V
C202
KDS226
OCP
D200
A
AC
C
510
OCP
R208
160 OCP
R203
75
R227
220K
R223
220K
R222
10K
R224
10K
R225
12K
R226
12K
R228
P P J 2 1 8 - 0 2
JK201
5C[RD]CONTACT
2C[RD]U_CAN
4C[RD]O_SPRING
2B[WH]U_CAN
3B[WH]C_LUG
2A[YL]U_CAN
5A[YL]CONTACT
4A[YL]O_SPRING
IR_OUT
**1A Design
I t ’ s p o s s i b e l t o 2 7 ~ 4 7 o h m
SIDE AV
USB
RS-232C (CI ITEM)
INPUT-RS232/SIDE/USB
H6 LH90
2 1 2
2 0 0 9 / 0 3 / 0 4
EAN43439401
P i n t o P i n w i t h
Close to SIDE_USB
EAX61087201
Mstar LCD LH90
Mstar LCD LH90
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.
TMDS3_RXC+
+5V_HDMI_1
TMDS3_RX2+
100
R304
HPD_MST_1
KDS184S
D300
A1
C
A2
TMDS3_RX0+
100
R327
DDC_SDA1
1K
R303
+5V_HDMI_3
CAT24C02WI-GT3
IC300
EEPROM_CATALYST
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
TMDS1_RX2+
TMDS2_RX1+
DDC_WP
TMDS3_RX1-
1K
R302
2SC3875S
RT1C3904-T112
Q300
E
B
C
10K
R312
SIDE_HDMI
+5V_HDMI_1
TMDS3_RX2-
2SC3875S
RT1C3904-T112
Q302
SIDE_HDMI
E
B
C
CEC
100
R318
TMDS2_RXC+
0 . 0 1 u F
C300
KDS184S
D301
A1
C
A2
HPD_MST_3
2SC3875S
RT1C3904-T112
Q301
E
B
C
J P 3 0 1
0 . 0 1 u F
C302
JP304
DDC_SDA3
+5V_HDMI_3
DDC_WP
100
R307
JP305
1K
R314
SIDE_HDMI
TMDS2_RXC-
TMDS1_RX0-
0 . 0 1 u F
C301
100
R329
DDC_WP
10K
R301
TMDS1_RX2-
TMDS2_RX1-
J P 3 0 2
TMDS1_RXC+
DDC_SCL2
TMDS1_RX0+
TMDS3_RXC-
+5V_HDMI_2
100
R306
TMDS3_RX0-
100
R331
CEC
KJA-ET-0-0032
JK303
SIDE_HDMI
14 NC
13 CEC
5 DATA1_SHIELD
20
JACK_GND
12 CLK-
11 CLK_SHIELD
2 DATA2_SHIELD
19 HPD
18 +5V_POWER
10 CLK+
4 DATA1+
1 DATA2+
17DDC/CEC_GND
9 DATA0-
8 DATA0_SHIELD
3 DATA2-
16 SDA
7 DATA0+
6 DATA1-
15 SCL
+5V_MULTI
DDC_SCL1
+5V_MULTI
HPD_MST_2
TMDS2_RX2-
10K
R300
CAT24C02WI-GT3
IC301
EEPROM_CATALYST
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
DDC_SCL3
DDC_SDA2
KDS184S
D302
A1
C
A2
CEC
TMDS3_RX1+
J P 3 0 0
TMDS1_RXC-
TMDS2_RX0-
+5V_MULTI
+5V_HDMI_2
100
R317
100
R305
CAT24C02WI-GT3
IC302
EEPROM_CATALYST
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
TMDS1_RX1+
J P 3 0 3
TMDS1_RX1-
TMDS2_RX2+
TMDS2_RX0+
CEC
0
R313
68K
CEC_READY
R315
CEC_C
MMBD301LT1G
30V CEC_READY
D303
CDS3C30GTH
30V CEC_READY
D304
+3.3V_MST
BSS83
Q303
CEC_READY
S
B
D
G
10K
R311
10K
R309
10K
R320
10K
R319
10K
R310
10K
R308
56000
R332
READY
J P 3 0 6
J P 3 0 7
J P 3 0 8
QJ41193-CFEE1-7F
JK302
1 DATA2+
2 DATA2_SHIELD
3 DATA2-
4 DATA1+
5 DATA1_SHIELD
6 DATA1-
7 DATA0+
8 DATA0_SHIELD
9 DATA0-
10 CLK+
11
12
13
14
15
16
17
18
19
20 JACK_GND
21
.
22
QJ41193-CFEE1-7F
JK301
1 DATA2+
2 DATA2_SHIELD
3 DATA2-
4 DATA1+
5 DATA1_SHIELD
6 DATA1-
7 DATA0+
8 DATA0_SHIELD
9 DATA0-
10 CLK+
11
12
13
14
15
16
17
18
19
20 JACK_GND
21
.
22
10K
R321
10K
R322
HDMI2_5V_DET
+5V_HDMI_2
10K
R323
HDMI1_5V_DET
10K
R324
+5V_HDMI_1
10K
R325
HDMI3_5V_DET
10K
R326
+5V_HDMI_3
M24C02-RMN6T
IC301-*1
EEPROM_STM
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
M24C02-RMN6T
EEPROM_STM
IC302-*1
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
M24C02-RMN6T
EEPROM_STM
IC300-*1
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
MST_HPD : USE MST HPD
SW_HPD : USE SW HPD (Default)
OPTION
INPUT-HDMI
H6 LH90
3 1 2
2 0 0 9 / 0 3 / 0 4
EAX61087201
Mstar LCD LH90
Mstar LCD LH90
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.
4.7K
R421
2SC3052
Q405
IR-OUT
E
B
C
ZD402
SUB_SDA
+5VST_MST
10K
IR-OUT
R427
KEY2
120ohm
L406
+3.3V_MULTI_MST
120ohm
L403
IR
2SC3052
Q404
IR-OUT
E
B
C
22
IR-OUT
R430
0.1uF
C408
ZD400
10K
IR-OUT
R429
470pF
C412
+5VST_MST
10K
IR-OUT
R428
SUB_SCL
KEY1
0.1uF
C407
READY
IR_OUT
500-ohm
L410
120ohm
L402
+5VST_MST
47uF
C406
470pF
C404
47K
IR-OUT
R426
+3.3V_MST
500-ohm
L411
4.7K
R420
0
R417
0.1uF
C411
+3.3V_MST
0
R400
READY
0.1uF
C414
ZD401
47pF
C403
12507WS-12L
P400
1
2
3
4
5
6
7
8
9
10
11
12
13
+3.3V_MST
MLB-201209-0120P-N2
L404
MLB-201209-0120P-N2
L407
CONTROL KEY
CONTROL KEY
H6 LH90
4 1 2
2 0 0 9 / 0 3 / 0 4
EAX61087201
Mstar LCD LH90
Mstar LCD LH90
TV_MAIN
27pF
C502
10uF
16V
16V
C508
+5V_TUNER
27pF
C500
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.
10uH
L502
NTSC_READY
270pF
C504
READY
M_SCL
47
R504
MAIN_SIF
M_SDA
47
R505
82pF
C507
NTSC_READY
+5V_TUNER
ISA1530AC1
Q502
E
B
C
MLB-201209-0120P-N2
L500
READY
TAFT-Z203D
TU500
PAL_TUNER
14 NC_5
13 V-OUT
5 RF_AGC
12 NC_4
11 MOPLL_AS
2 GND_1
19 NC_8
18 NC_7
10 SCL
4 NC_2
1 NC_1
17 NC_6
9 SDA
8 GND_2
3 +B[5V]
16 SIF-OUT
7 NC_3
6 TP[3.3V_OPT]
15 A-OUT
21
SHIELD
20 NC_9
TAFT-H203F
TU500-*1
NTSC_TUNER
14
NC_5
13
V-OUT
5
RF_AGC
12
NC_4
11
MOPLL_AS
2
GND_1
19
NC_8
18
NC_7
10
SCL
4
NC_2
1
NC_1
17
NC_6
9
SDA
8
GND_2
3
+B[5V]
16
SIF-OUT
7
NC_3
6
TP[3.3V_OPT]
15
A-OUT
21
SHIELD
20
NC_9
220uF
16V
C505
220
R507
220
R506
4.7K
R502
0 . 0 1 u F
C501
0 . 1 u F
C503
N e a r t h e p i n
TUNER
H6 LH90
5 1 2
2 0 0 9 / 0 3 / 0 4
EAX61087201
Mstar LCD LH90
Mstar LCD LH90
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