Cambridge Azur 640R AV Receiver
HDMI Circuit Diagram
NC
1
SDA1
2
SCL1
3
GND
4
B11
5
A11
6
VCC
7
B12
8
A12
9
GND
10
B13
11
A13
12
VCC
13
B14
14
A14
15
GND
16
VCC
17
VSADJ
18
PRE
19
NC
20
S1
21
S2
22
S3
23
GND
24
Y4
25
Z4
26
VCC
27
Y3
28
Z3
29
GND
30
Y2
31
Z2
32
VCC
33
Y1
34
Z1
35
GND
36
GND
37
SC
L
_
SINK
38
S
DA_S
IN
K
39
HP
D_S
IN
K
40
NC
41
OE
42
VCC
43
HPD3
44
SDA3
45
SCL3
46
GND
47
B31
48
A31
49
VCC
50
B32
51
A32
52
GND
53
B33
54
A33
55
VCC
56
B34
57
A34
58
GND
59
NC
60
VCC
61
HP
D2
62
S
DA2
63
SC
L
2
64
GND
65
GND
66
B21
67
A21
68
VCC
69
B22
70
A22
71
GND
72
B23
73
A23
74
VCC
75
B24
76
A24
77
GND
78
VCC
79
HP
D1
80
IC1
TMDS341APFC
Q5
14
Q6
13
Q7
12
Q1
4
Q2
5
Q3
6
Q4
7
Q8
11
QS
9
CS
10
CLK
3
SDA
2
STR
1
OE
15
VDD
16
VSS
8
IC2
TC4094BFN
C8
104
1
2
3
4
CN1
4P(2.0)
4094-SDA
4094-CLK
4094-STR
GND
FROM OSD BOARD
C12
102
C13
102
C14
102
C16
104
C6
104
C5
104
C2
104
C1
104
R10
3K
C7
100U/10
R14
4.7K
C17
104
TERMINAL ERTH
E1
C18
104
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CASE3
CASE4
CASE2
CASE1
JK1
206A-SABN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CASE3
CASE4
CASE2
CASE1
JK2
206A-SABN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CASE3
CASE4
CASE2
CASE1
JK3
206A-SABN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CAS
E
3
CAS
E
4
CAS
E
2
CAS
E
1
JK4
206A-SABN
VCC33
C38
102
R4
4.7K
C37
102
R5
3K
R8
4.64K1%
C34
100U/10
V IN
3
GND
1
V OUT
2
IC3
LD1117S3.3
C20
104
C19
104
1
2
3
CN2
3P2.5
C35
220U/6.3
C29
103
C30
103
C25
103
C26
103
C22
103
C23
103
C24
103
C27
103
C28
103
C33
103
C32
103
C31
103
FROM DEOCDE BOARD
+7.5V
+5V
GND
C36
22U/6.3
C21
104
HDMI_IN1
HDMI_IN2
HDMI_IN3
HDMI_OUT
R1
33
R2
33
R3
33
R15
3K
R16
3K
R17
3K
R11
4.7K
R12
4.7K
R13
4.7K
C3
103
E
E
E
E
E
E
C9
104
C4
104
E2
DA
STR
CLK
+5V
R6
47K
R7
47K
R18
47K
R19
47K
R21
47K
R22
47K
+5V
R24
47K
R25
47K
C15
104
C11
104
C10
104
To enhance viewing, please print to A3
35
