Read LG 37SL80YD-AA (CHASSIS:LB91T) 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.
HDMI
+5V_GENERAL
C612
0.1uF
R630
4.7K
R625
4.7K
EEPROM_SCL
EEPROM_SDA
IC601
CAT24WC08W-T
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
R638
0
0
C616
0.1uF
EDID_WP
R647
0
+5V_ST
R642
0
DDC_SCL_1
5V_HDMI_1
IC602
AT24C02BN-10SU-1.8
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
C618
0.1uF
R646
0
R637
0
0
C615
0.1uF
R640
0
GND
5V_HDMI_2
EDID_WP
+5V_ST
DDC_SDA_2
DDC_SCL_3
D604
ENKMC2838-T112
A
1
C
A
2
R644
0
5V_HDMI_3
DDC_SCL_4
R636
0
0
+5V_ST
R645
0
R639
0
0
DDC_SDA_4
JP610
IC604
AT24C02BN-10SU-1.8
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D605
ENKMC2838-T112
A
1
C
A
2
EDID_WP
C617
0.1uF
DDC_SDA_3
R641
0
IC603
AT24C02BN-10SU-1.8
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
DDC_SDA_1
EDID_WP
JP609
+5V_ST
IC605
AT24C02BN-10SU-1.8
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D606
ENKMC2838-T112
A
1
C
A
2
D603
ENKMC2838-T112
A
1
C
A
2
R643
0
DDC_SCL_2
JP608
C614
0.1uF
+3.3V_HDMI
L600
BLM18PG121SN1D
+3.3V
DDC_SDA_3
D0+_HDMI3
DDC_SCL_2
R611
0
D2+_HDMI2
R610
0
JP603
D2+_HDMI3
R608
0
CK+_HDMI3
D1+_HDMI1
D2+_HDMI1
R604
0
CK-_HDMI1
CK+_HDMI1
D0-_HDMI2
D2-_HDMI3
D2-_HDMI2
D0-_HDMI1
D1-_HDMI2
R605
0
GND
CEC_REMOTE
R606
0
DDC_SDA_2
CK-_HDMI3
D2-_HDMI1
5V_HDMI_2
GND
D1-_HDMI3
5V_HDMI_3
JP600
5V_HDMI_1
CK-_HDMI2
D0+_HDMI1
DDC_SDA_1
GND
R607
0
DDC_SCL_1
JP601
CEC_REMOTE
R609
0
CEC_REMOTE
D1+_HDMI2
D1+_HDMI3
DDC_SCL_3
HPD3
D0+_HDMI2
D0-_HDMI3
R603
0
CK+_HDMI2
D1-_HDMI1
DDC_SDA_4
D1+_HDMI4
HPD4
5V_HDMI_4
R620
0
D2+_HDMI4
DDC_SCL_4
D0+_HDMI4
CK+_HDMI4
D1-_HDMI4
CEC_REMOTE
JP606
D2-_HDMI4
R622 0
R621
0
CK-_HDMI4
GND
D0-_HDMI4
5V_HDMI_4
DDC_SDA_2
DDC_SCL_1
SDA_HDMI_SW
C608
0.1uF
C607
0.1uF
D0+_HDMI3
CK+_HDMI1
D0-_HDMI1
CK+_HDMI2
CK-_HDMI1
DDC_SCL_3
C610
0.1uF
D0-_HDMI3
DDC_SDA_1
D1-_HDMI2
C606
0.1uF
D1+_HDMI1
CK-_HDMI2
DDC_SDA_3
R619 4.7K
D1+_HDMI2
R629
4.7K
D0-_HDMI2
D2-_HDMI1
D2+_HDMI2
C605
0.1uF
SCL_HDMI_SW
R628
4.7K
OPT
D1+_HDMI3
D2-_HDMI2
C611
0.1uF
D1-_HDMI3
C609
0.1uF
IC600
TMDS351PAGR
1
SDA3
2
SCL3
3
GND_1
4
B31
5
A31
6
VCC_1
7
B32
8
A32
9
GND_2
10
B33
11
A33
12
VCC_2
13
B34
14
A34
15
GND_3
16
VSADJ
17
Y4
18
Z4
19
VCC_3
20
Y3
21
Z3
22
GND_4
23
Y2
24
Z2
25
VCC_4
26
Y1
27
Z1
28
GND_5
29
SCL_SINK
30
SDA_SINK
31
HPD_SINK
32
S1
33
S2
34
EQ
35
HPD1
36
SDA1
37
SCL1
38
B11
39
A11
40
VCC_5
41
B12
42
A12
43
GND_6
44
B13
45
A13
46
VCC_6
47
B14
48
A14
49
VDD
50
HPD2
51
SDA2
52
SCL2
53
B21
54
A21
55
VCC_7
56
B22
57
A22
58
GND_7
59
B23
60
A23
61
VCC_8
62
B24
63
A24
64
HPD3
CK-_HDMI3
D1-_HDMI1
D2+_HDMI1
D0+_HDMI2
C604
0.1uF
DDC_SCL_2
D2-_HDMI3
D2+_HDMI3
D2+_HDMI3
D0+_HDMI1
C613
0.1uF
CK+_HDMI3
+3.3V_HDMI
+3.3V_HDMI
HDMI_RX2-
HDMI_RX0-
HDMI_RX2+
HDMI_RX1-
HDMI_RX0+
HDMI_RX1+
HDMI_CLK+
HDMI_CLK-
HDMI_SEL2
HDMI_SEL1
HDMI_EQ_SEL
R657
0
OPT
+5V_GENERAL
L601
BLM18PG121SN1D
+5V_HDMI
+5V_HDMI
+5V_HDMI
C619
0.1uF
R632
22
R633
22
R617
10K
Q601
2SC3052
E
B
C
C601
0.1uF
16V
0.1uF
16V
R613
1K
HPD1
R616
0
OPT
R634
1K
OPT
R601
2K
HPD2
R623
10K
R614
1K
R635
1K
OPT
C602
0.1uF
16V
0.1uF
16V
R618
0
OPT
R602
2K
Q602
2SC3052
E
B
C
R631
10K
R615
1K
R656
1K
OPT
C603
0.1uF
16V
0.1uF
16V
R624
0
OPT
R612
2K
Q603
2SC3052
E
B
C
R661
10K
R659
1K
R662
1K
OPT
C620
0.1uF
16V
0.1uF
16V
R660
0
OPT
R658
2K
Q604
2SC3052
E
B
C
VR601
AVRL161A1R1NT
OPT
GND
C621
0.1uF
16V
OPT
CEC_REMOTE
006:L4;006:L13;006:L23;006:U23
+3.3V_ST
GND
D601
MMBD301LT1G
HDMI_CEC
002:D15
R663
0
R664
0
R666
9.1K
OPT
Q605
SSM6N15FU
OPT
3
DRAIN2
2
GATE1
1
SOURCE1
4
SOURCE2
5
GATE2
6
DRAIN1
+3.3V_HDMI
R667
10K
OPT
R669
10K
OPT
+3.3V_HDMI
R668
10K
OPT
+3.3V_HDMI
R670
10K
OPT
+3.3V_HDMI
R665
120K
R627
4.7K
4.7K
R626
4.7K
R648
4.7K
R652
4.7K
R649
4.7K
R653
4.7K
R650
4.7K
R654
4.7K
R655
4.7K
R651
4.7K
JK600
EAG59023302
14
13
5
D1_GND
20
20
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
JK601
EAG59023302
14
13
5
D1_GND
20
20
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
JK602
EAG59023302
14
13
5
D1_GND
20
20
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
JK603
EAG42025501
14
13
5
D1_GND
20
JACK_GND
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
EAX61110501(9)[SL80]
6 11
HDMI
2009.06.22
HDCP EEPROM
HDMI EEPROM
UI_HW_PORT2
UI_HW_PORT3
UI_HW_PORT1
SIDE HDMI
UI_HW_PORT4
L: HDMI1.3 Compliant Cable
H: 10m 28 AWG Cable
H: 10m 28 AWG Cable
L
H
Unselected, HPD ALL
H
DDC1, HPD1
DDC2, HPD2
SEL1
DDC3, HPD3
L
I/O Selected
L
SEL2
H
H
L
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