Read LG 42PG20D-DA (CHASSIS:PT81A) Service Manual online
D1-_HDMI1
D1+_HDMI3
CK-_HDMI1
DDC_SCL_3
CK-_HDMI3
HP_DET_S/W_3
D0+_HDMI1
D0+_HDMI3
DDC_SCL_1
D2-_HDMI1
D2+_HDMI3
CK+_HDMI1
CK+_HDMI3
DDC_SDA_1
D1+_HDMI1
D1-_HDMI3
DDC_SDA_3
5V_HDMI_1
D2+_HDMI1
D2-_HDMI3
HP_DET_S/W_1
5V_HDMI_3
D0-_HDMI1
D0-_HDMI3
GND
GND
5V_HDMI_4
GND
DDC_SDA_4
DDC_SCL_4
CEC_REMOTE
CEC_REMOTE
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.
5V_HDMI_1
DDC_SCL_2
0
READY
R218
0
R217
READY
P_+5V
AT24C02BN-10SU-1.8
IC204
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
33K
R222
CEC_0
P_+5V
CEC_REMOTE
HDMI3_5V_DET
0.1uF
C216
33K
R213
0.1uF
C217
HDMI_4EA_PG60
BSS83
Q201
S B D
G
KDS184
D203
A2
C
A1
5V_HDMI_1
0
R237
0
R238
HDMI_4EA_PG60
10K
R214
HDMI_4EA_PG60
+3.3V_STBY
0.1uF
C218
5V_HDMI_3
KDS184
D204
HDMI_4EA_PG60
A2
C
A1
DDC_SDA_3
DDC_SDA_2
10K
R212
DDC_SCL_3
READY
D201
DDC_SCL_1
P_+5V
AT24C02BN-10SU-1.8
IC202
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
DDC_SDA_1
0
R239
HDMI1_5V_DET
KDS184
D205
A2
C
A1
AT24C02BN-10SU-1.8
IC203
HDMI_4EA_PG60
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
5V_HDMI_3
33K
R215
HDMI_4EA_PG60
33K
R220
10K
R219
5V_HDMI_2
HDMI2_5V_DET
HDMI4_5V_DET
GND
5V_HDMI_2
CEC_REMOTE
DDC_SDA_2
DDC_SCL_2
CK-_HDMI2
CK+_HDMI2
D0-_HDMI2
D0+_HDMI2
D1+_HDMI2
D2-_HDMI2
D2+_HDMI2
HP_DET_S/W_2
D1-_HDMI2
GND
DDC_SCL_4
AT24C02BN-10SU-1.8
IC205
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
P_+5V
0.1uF
C219
DDC_SDA_4
KDS184
D206
A2
C
A1
0
R240
5V_HDMI_2
TXCLK_BUF-
TXCLK_BUF+
TX0_BUF-
TX0_BUF+
TX1_BUF-
TX1_BUF+
TX2_BUF-
TX2_BUF+
5V_HDMI_4
10K
R231
HP_DET_S/W_4
5V_HDMI_4
D2+_HDMI2
DDC_SCL_3
0.1uF
C211
CK-_HDMI1
+3.3V
D1-_HDMI2
CK+_HDMI3
DDC_SDA_1
D0+_HDMI2
D2+_HDMI3
4.7K
R261
D1-_HDMI1
TX2_SW-
D1-_HDMI3
D0+_HDMI1
HDMI_SEL2
DDC_SDA_2
DDC_SDA_3
CK-_HDMI3
4.7K
R264
D2-_HDMI3
DDC_SCL_1
TX1_SW-
D2-_HDMI1
D2-_HDMI2
0 R259
D1+_HDMI2
SCL_HDMI_SW
D2+_HDMI1
TX0_SW-
CK-_HDMI2
0 R262
D0-_HDMI1
SDA_HDMI_SW
D1+_HDMI1
HDMI_SW_EQ
+5V
+3.3V
TXCLK_SW+
CK+_HDMI2
0.1uF
C210
TX1_SW+
TXCLK_SW-
TX0_SW+
D0-_HDMI2
D1+_HDMI3
CK+_HDMI1
DDC_SCL_2
D0-_HDMI3
HDMI_SEL1
TX2_SW+
0
R268
D0+_HDMI3
0.1uF
C209 0.1uF
C208 0.1uF
C206 0.1uF
C207 0.1uF
C212 0.1uF
C204 0.1uF
C205
1K
R232
1K
R203
HDMI_4EA_PG60
1K
R204
1K
R202
56K
R216
47K
R233
22
R286
22
R229
22
R283
22
R288
22
R285
HDMI_4EA_PG60
22
R287
22
R284
HDMI_4EA_PG60
22
R230
18K
R246
HDMI_4EA_PG60
18K
R248
18K
R244
18K
R243
18K
R245
18K
R241
18K
R247
18K
R242
HDMI_4EA_PG60
TMDS351PAG
IC201
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
MMBD301LT1G
30V
D202
0 . 1 u F
16V
16V
C203
0 . 1 u F
16V
16V
C201
HDMI_4EA_PG60
0 . 1 u F
16V
16V
C202
0 . 1 u F
16V
16V
C220
0 . 1 u F
16V
16V
C213
KDS184
D207
A2
C
A1
QJ41193-FEE2-7F
JK201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
QJ41193-FEE2-7F
JK202
HDMI_4EA_PG60
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
QJ41193-FEE2-7F
JK203
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
1
R299
4.7K
R201
TP2100
TP2104
0
R8114
0
R8115
0
R8118
0
R8119
47K
R207
READY
47K
R208
READY
47K
R206
READY
47K
R205
READY
CAT24C02WI-GT3
IC202-*1
PG60
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
CAT24C02WI-GT3
IC203-*1
PG60
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
CAT24C02WI-GT3
IC204-*1
PG60
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
CAT24C02WI-GT3
IC205-*1
PG60
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
K J A - E T - 0 - 0 0 3 2
JK204
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+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
SIDE HDMI
HDMI 5V Detection
Douglas
9
2
0 8 . 0 3 . 12
HDMI
MAIN(TOP)
PRINTED CIRCUIT BOARD
Control B/D(BOTTOM)
Control B/D(TOP)
MAIN(BOTTOM)
PREAMP B/D(BOTTOM)
PREAMP B/D(TOP)
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