Circuit Diagrams - NAD D7050 Service Manual

CIRCUIT DIAGRAMS

1.AMP BOARD VM2.1(1/8)
DDFA MODULATOR VM1.2
X1
2
2
1
GND
3
3
MB_MJ
C 73 C 71
10nF 12pF
L1
GND
330nH
GND
P5 V
U10
1 8
C H2_PW M0 IP1 Vcc R 76
33R
2 7
OP3 OP1 C H2_PW M0_B
3 6
C H2_PW M2 IP2 IP3
4 5
GND OP2
P5 V
R 78 33R
NC 7NZ17K8X
C 52
C H2_PW M2_B
1uF
GND
U14
1 8
C H3_PW M0 IP1 Vcc R 79 33R
2 7
OP3 OP1 C H3_PW M0_B
3 6
C H3_PW M2 IP2 IP3
4 5
GND OP2
NC 7NZ17K8X R 80 33R
GND
GND C H3_PW M2_B
R 3V3 R 1V8
C 80 C 81 C 76 C 77 C 98 C 93 C 94 C 99
100nF 100nF 100nF 100nF 1uF 1uF 1uF 1uF
GND GND
U 15
AHC 1G125
3 4
R122
GND gnd y GND
10K
2
C H0_1_WS R123
a
1 5
DDF A_MUTE /oe vcc 33R
3V3
GND
C 116
100n X 7R
GND
C H0_1_S C K
C H0_1_S D
C H2_3_S C K
C H2_3_S D
U 17
AHC 1G125
3 4 R126
GND gnd y GND
10K
2
C H2_3_WS a R129
1 5
33R
DDF A_MUTE /oe vcc
3V3
C 117
100n X 7R
GND
D1022
DDF A_BR IDGE
BAT54J
R 121
BR IDGE
0R
!RES ET
R 110
DDF A_R ES ET
NO F IT
GND GND
C H3_R EF 0
C H3_R EF 1
C H3_R EF 2
C 72
C H3_F B0
12pF
C H3_F B1
C H2_F B1
C H2_F B0
R 3V3
C H2_R EF 2
C H2_R EF 1
R 1V8
C H2_R EF 0
C 3V3 C 1V8
1
MC K0 MC K0_OUT
2
MC K0_OUT
3
C KO0P1 V8
4
C KO0GND
5
PW MC K0 PW MC K0_OUT
6
C KO0P3 V3
7
P1 V8
8
GND
9
C 1P1 V8
10
C H1_R EF 0
11
C 1P3 V3
12
C 1GND
13
C H1_R EF 1
GND
14
C H1_R EF 2
15
C H1_F B0
16
C H1_F B1
17
C O1P1 V8
18
C O1GND
19
C O1P3 V3
20
C H0_F B1
21
C H0_F B0
22
C H0_R EF 2
3V3
23
C H0_R EF 1
24
C 0GND
25
C 0P3 V3
26
C H0_R EF 0
27
R 128 C 0P1 V8
28
3k3 P1 V8
29
GND
30
P3 V3
31
C H3_PW M2 C H3_PW M2
32
C H3_PW M1
33
C H3_PW M0 C H3_PW M0
34
C H2_PW M2 C H2_PW M2
35
C H2_PW M1
36
C H2_PW M0 C H2_PW M0
R 127 37
GND
22R
38
P3 V3
39
C H1_PW M2
40
C H1_PW M1
41
C H1_PW M0
42
C H0_PW M2
43
C H0_PW M1
44
C H0_PW M0
GND
3V3
R 92
3k3
GND
844kHz
R 103 150R
INTER R UPT
R 107 150R
S 3V3 C 3V3
S 1V8 C 1V8
12
C 3V3
C H5_R EF 0
C H5_R EF 1
C H5_R EF 2
MC K0
C H4_R EF 2
C H4_R EF 1
C H4_R EF 0
GND
R 44
75R
C 58
U3 GND
10pF
ZXC ZM800
GND
3V3D
132
MC K1_OUT
131
MC K1_OUT
130
C KO1P1 V8
129
C KO1GND
128
PW MC K1_OUT
127
C KO1P3 V3
126
P1 V8
125
GND
124
C 6P1 V8
123
C H6_R EF 0
122
C 6P3 V3
121
C 6GND
120
C H6_R EF 1 3V3
119
C H6_R EF 2
118
C H6_F B0
117
C 82 C 83
C H6_F B1
116
C 67P3 V3
115 4u7F 1uF
C 67GND
114
C 67P1 V8
113
C H7_F B1
112
C H7_F B0
111 GND
C H7_R EF 2
110
C H7_R EF 1
109 1V8
C 7GND
108
C 7P3 V3
107
C H7_R EF 0
C 100 C 101
106
C 7P1 V8
105
P1 V8 4u7F 1uF
104
GND
103
P3 V3
102
C H4_PW M2
101
C H4_PW M1 GND
100
C H4_PW M0
99
C 3V3
C H5_PW M2
98
C H5_PW M1
97
C H5_PW M0
96
C 109 C 111
GND
95
P3 V3
1uF
94 1uF
C H6_PW M2
93
C H6_PW M1
92
C H6_PW M0
91
C H7_PW M2
90 GND
C H7_PW M1
89
C H7_PW M0
S 3V3
C 118
3V3 1V8 1uF
GND
M o d u l a t o r c
U 18
R130
4 3
GND 10K y gnd GND
2
R131 a C H4_5_WS
5 1
33R DDF A_MUTE
vcc /oe
3V3
AHC 1G125
R 98 150R C 119
S PI_S D
100n X 7R
GND
R 101 150R
S PI_C S
GND
R 104 150R
S PI_C K
R 105 3k3
GND
C 3V3
C 3V3
C 48 C 49
1uF 1uF
U16
1 5
VC C
2
GND
R 124
3 4
GND C 108_2
C 56
NC 7S V86P5 X 1R
C 3V3
33pF
U12
1 5
VC C GND
2
R 125
3 4
GND C 108_3
C 54
1R
NC 7S V86P5 X
33pF
GND
D5
R 46
1k
LED
GND
C 84 C 85 C 86 C 87 C 88 C 89 C 90 C 91
1uF 1uF 1uF 1uF 1uF 1uF 1uF 1uF
C 102 C 103 C 104 C 105 C 106 C 107 C 108
1uF 1uF 1uF 1uF 1uF 1uF 1uF
C 1V8
C 112 C 113
1uF 1uF
GND
S 1V8
C 121
1uF
GND
h i p
C H6_7_S C K
C H6_7_S D
C H4_5_S C K
C H4_5_S D
R102
33R
U 100
R100
4 3
y gnd GND
2
a C H6_7_WS
10K
5 1
vcc /oe DDF A_MUTE
3V3
AHC 1G125
C 123
100n X 7R
GND