Samsung HL67A750A1FXZA Service Manual page 82

Schematic Diagram
7-3-4 Main Board-4
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Power
HDMI1_5V
CN401
Q401
HMR41-AK5200
D403
R403
MGND3 MGND1 TP501
1KOHM
19
18
10KOHM
17 R405
16
15
14
13 R401
HDMI_CEC
12
0OHM
11 1
10 2
EXC28CG900U
9 3
FT401
8 4
7
6
5 1
4 2 EXC28CG900U
FT402
3 3
2 4
D404
MGND4 MGND2
MMBD4148SE
100V
CN_DSUB_19_G4 FGND
R550 1
SCL_NIM
1
R551
SDA_NIM
HDMI3_5V
CN402
Q402
HMR41-AK5200
R404
MGND3 MGND1
1KOHM TP503
19 1
18
10KOHM
17 R406
16
15
14
13
R402
HDMI_CEC
12
0OHM
11 1
EXC28CG900U
10 2
FT403
9 3
8 4
7
6
5 1
4 2
EXC28CG900U
3 3
FT404
2 4
D406
MGND4 MGND2
MMBD4148SE
100V
CN_DSUB_19_G4 FGND
1
R558
SCL_NIM
R559 1
SDA_NIM
7-6
DDC_VCC
TP507
1
10V 16V
D407 D412
100NF IC401
MMBD4148SE MMBD4148SE
24LC02B-E/SN
10UF
8
7 VCC
WP
R419 6
47OHM
SCL
R420 5
47OHM
SDA VSS
10OHM
R413
D421 BZX84C8V2 HDMI1_HPD
TP502
25V
C413
100OHM 100NF
R407
1/10W
HDMI1_IDENT
1 2
R408 1/10W 10OHM
HDMI1_DDC_SDA
R409 1 2
10OHM
HDMI1_DDC_SCL
4.7OHM
R421 1 2
HDMI1_RXCLK-
8 1 4.7OHM 2
R422
HDMI1_RXCLK+
7
6 1 4.7OHM 2
R423
4.7OHM HDMI1_RX0-
5 R424 1 2
HDMI1_RX0+
1 4.7OHM 2
R425
HDMI1_RX1-
4.7OHM
8 R426 1 2
HDMI1_RX1+
7
4.7OHM
6 R427 1 2
HDMI1_RX2-
4.7OHM
5 R428 1 2
HDMI1_RX2+
DDC_VCC
D427
5.30-5.63V
VLZ5V6B
FGND
HDMI1_DDC_WP
B5V
IC504
1 2
C551
1 8
1UF
/OE1
2 2 VCC 7
0OHM 6.3V
A1
2 3 6 1 2
/OE2 R554
0OHM B2 0OHM
HDMI1_DDC_SCL
4 B1 5 R555 1 2
0OHM
GND HDMI1_DDC_SDA
A2
TC7WB125FK
NEAR TO IC401
DDC_VCC
D414 10V 16V
IC403
MMBD4148SE MMBD4148SE
10UF 100NF 24LC02B-E/SN
8
VCC A0
7
6 WP A1
R429
47OHM
SCL A2
R430 5
47OHM
SDA VSS
10OHM
R414
HDMI3_HPD
D422 BZX84C8V2
1
25V
C416
2
TP504
100OHM 100NF
R410 1
HDMI3_IDENT
R411 1 2
10OHM
HDMI3_DDC_SDA
1 2
R412 10OHM
HDMI3_DDC_SCL
4.7OHM
R431 1 2
HDMI3_RXCLK-
4.7OHM
8 R432 1 2
HDMI3_RXCLK+
7
4.7OHM
6 R433 1 2
HDMI3_RX0-
5 1 4.7OHM 2
R434
HDMI3_RX0+
4.7OHM
R435 1 2
4.7OHM HDMI3_RX1-
8 1 2
R436
HDMI3_RX1+
7
6 1 4.7OHM 2
R437
4.7OHM HDMI3_RX2-
5 R438 1 2
HDMI3_RX2+
DDC_VCC
D428
5.30-5.63V
VLZ5V6B
FGND
HDMI3_DDC_WP
B5V
IC506
C553
1 2
1 8
1UF
/OE1
2 2 7
0OHM VCC 6.3V
A1
2 3 /OE2 6 R562 1 2
0OHM 0OHM
B2 HDMI3_DDC_SCL
4 B1 5 R563 1 2
0OHM
GND HDMI3_DDC_SDA
A2
TC7WB125FK
NEAR TO IC403
DDC_WP
1
HDMI2_5V
A0 2
A1
3
A2
4 CN403
HMR41-AK5200
R440
MGND3 MGND1
1KOHM
19
18
17 R441
16
15
14
13 R439
12
0OHM
11
10
9
8
7
6
5
4
3
2
MGND4 MGND2
CN_DSUB_19_G4 FGND
SCL_NIM
SDA_NIM
DDC_WP
1
2
3
4
MGND2
6
11
7
2
12
8
3
13
9
4
14
10
5
15
MGND1
D451 D430 D431 D432
CN404
8.2V
R556 1
SCL_NIM
1
R557
SDA_NIM
DDC_VCC
10V
D440
16V
MMBD4148SE MMBD4148SE
10UF 100NF
R460
47OHM
R461
47OHM
Q403
10OHM
R453
D447 BZX84C8V2
TP505
1 1
25V
C431
10KOHM TP506 100OHM 100NF
R450 2 1
1/10W
1 2
R451 10OHM 1/10W
R452 1 2
10OHM
HDMI_CEC
4.7OHM
R462 1 2
1 8 1 4.7OHM 2
R463
EXC28CG900U
2 7
3 FT405 6 1 4.7OHM 2
R464
4.7OHM
4 5 R465 1 2
1 4.7OHM 2
R466
4.7OHM
1 8 R467 1 2
2 EXC28CG900U 7
4.7OHM
3 6 R468 1 2
FT406
4.7OHM
4 5 R469 1 2
D434
MMBD4148SE
100V
HDMI2_DDC_WP
B5V
IC503 C548
1 2
1 8
/OE1 1UF
R548 1 2 2 VCC 7
0OHM 6.3V
A1
R549 1 2 3 /OE2 6 R552 1 2
0OHM 0OHM
B2 HDMI2_DDC_SCL
4 B1 5 1 2
R553 0OHM
GND HDMI2_DDC_SDA
A2
TC7WB125FK
NEAR TO IC404
A5V
MMBD4148SE
D438 D441 D443
PC_RED
PC_GREEN
C436
PC_BLUE
10V
10UF
DDC_WP
R442 R448 R449
4.7KOHM 4.7KOHM 24LC02B-E/SN
75OHM 75OHM 75OHM
IC402
BD401
8 1
VCC A0
BEAD_CHIP 7 2
FGND
WP A1
BD402 R457 6 3
47OHM
R443 22OHM
5 SCL A2 4
47OHM R458
SDA VSS
BEAD_CHIP 1
1 TP508
BD403
TP509
R444 2 1
100OHM
BEAD_CHIP
PC_H_SYNC
PC_5V
100OHM
R445 2 1
PC_V_SYNC
100OHM
R446
PC_IDENT
22OHM
R447
D435 D444
C426 C428
50V 8.2V 50V
BZX84C8V2 100PF BZX84C8V2 100PF EMU_SDA
EMU_SCL
PC_DDC_WP
B5V
IC505
C552
1 2
1 8
1UF
/OE1
2 2 VCC 7
0OHM 6.3V
A1
2 3 /OE2 6 1 2
0OHM R560 0OHM
B2 EMU_SCL
4 B1 5 R561 1 2
0OHM
GND EMU_SDA
A2
TC7WB125FK
NEAR TO IC402
DDC_WP
IC404
24LC02B-E/SN
8 1
7 VCC A0 2
WP A1
6 3
SCL A2
5 4
SDA VSS
HDMI2_HPD
HDMI2_IDENT
HDMI2_DDC_SDA
HDMI2_DDC_SCL
HDMI2_RXCLK-
HDMI2_RXCLK+
HDMI2_RX0-
HDMI2_RX0+
HDMI2_RX1-
HDMI2_RX1+
HDMI2_RX2-
HDMI2_RX2+
DDC_VCC
D450
5.30-5.63V
VLZ5V6B
FGND
DDC_VCC
C437
16V
100NF
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