NAD D3020 Service Manual page 33

Hybrid digital amplifier
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4xconnecting2,2xPreamp
D101, D102, D103, D104, D105,
D106, D302, D303, D304, D305,
D306, D307, D314, D315, D316,
D319, D501, D502
D
5
0
0
D
3
1
, 2
D
3
1
3
D
1
0
0
D
1
0
9
DM01, DM02, DM03, DM04, DM05
Q
3
1
, 2
Q
3
1
3
Q
3
1
, 2
Q
3
1
3
Q
1
0
, 1
Q
5
0
0
Q303, Q304, Q306, Q307, Q308,
Q309
Q302, Q310, Q315, Q316, Q318,
Q320
Q103, Q305, Q311, Q314, Q317,
Q319, Q501, Q502, Q503
Q
M
0
1
U
1
0
3
U
1
0
3
U
5
0
5
U
3
0
3
U
3
1
1
U301, U302, U304, U305, U306,
U309, U319
U
1
0
, 1
U
1
0
8
U
5
0
2
U
5
0
2
U
5
0
3
U300, U307, U310
U
1
0
4
U
1
0
, 0
U
1
1
0
U
1
0
, 0
U
1
1
0
U
3
1
3
U
3
2
0
U
1
0
9
U
1
0
7
U
3
1
4
U
M
0
, 1
U
3
2
1
PCB INFO
A16-32302-23
Preamp PCB
A16-32320-23
Preamp+connecting2 ASSY
DIODES
3
3
4 -
0
3
5
2
0 -
1
D
o i
d
e
3
3
2 -
0
3
1
6
0 -
1
H
g i
h
s
3
3
4 -
0
0
5
4
0 -
0
S
c
h
o
t t
Surface Mount Schottky Barrier
3
3
2 -
0
0
1
2
0 -
1
Rectifier
3
3
1 -
3
3
0
9
0 -
4
Z
e
n
r e
33-20316-01
High speed Diode
TRSISTORS
3
1
0 -
0
1
0
8
0 -
2
N
-
C
H
r o
3
1
0 -
4
3
9
1
0 -
0
N
-
C
H
3
1
0 -
2
3
0
1
0 -
1
- P
C
H
31-03326-01
Transistor
31-00114-01
Digital transistor
31-00114-05
Digital transistor
3
1
0 -
1
8
1
5
0 -
3
T
a r
n
s
ICS
0
3
2 -
4
1
2
8
1 -
3
E
m
c i
o
c r
0
3
2 -
4
1
2
8
0 -
1
m
c i
o
c r
0
3
0 -
1
0
2
0
0 -
1
U
S
B
t S
8 Ch codec with S/PDIF
0
3
4 -
2
5
2
8
0 -
1
Receiver
0
3
4 -
9
8
6
0
0 -
1
D
u
l a
O
03-07157-02
2:1 multiplexer
0
3
0 -
0
7
1
7
0 -
1
S
C
H
M
0
3
0 -
2
4
6
4
1 -
8
B
U
S
E
0
3
0 -
2
4
6
4
0 -
2
B
U
S
E
High-Speed USB 2.0 (480
Mbps) 1:2
0
3
0 -
0
2
2
1
0 -
2
Multiplexer/Demultiplexer
Switch With Single Enable
03-05532-02
Dual OpAmp
0
3
0 -
2
4
1
6
0 -
2
E
E
P
R
0
3
0 -
1
1
1
7
0 -
6
L
n i
e
r a
r o
N
0
3
0 -
1
1
1
7
1 -
7
L
n i
e
r a
0
3
0 -
1
1
1
7
0 -
1
L
n i
e
r a
0
3
0 -
0
1
2
5
0 -
6
B
u
f f
r e
POSITIVE-EDGE-
0
3
0 -
7
4
7
4
0 -
2
TRIGGERED DUAL-D FLIP-
FLOP
0
3
0 -
0
5
9
5
0 -
5
S
h
t f i
R
0
3
0 -
1
1
9
4
0 -
1
A
u
d
o i
0
3
0 -
0
0
8
2
0 -
2
D
u
l a
O
33
VM2.1,FR-4,1.6mm,TG130,155.7×
80mm
VM2.1,FR-4,1.6mm,TG130,170×
165.7mm
s
1
S
S
3
5
2
p
e
e
d
D
o i
d
e
B
A
S
3
1
6
y k
D
o i
d
e
B
A
T
5
4
, S
S
SS12 SMA
D
o i
d
e
S
M
D
P
D
Z
3
3 .
B
BAS316
A
N
N
E
L
J
F
E
T
M
M
B
F
J
1
0
A
N
N
E
L
J
F
E
T
M
M
B
F
4
3
9
M
O
S
F
E
T
A
P
M
2
3
0
1
2SC3326-A(TE85L,F), SC-59
DTA114EKA
DTC114EKA
t s i
r o
C
1
8
1
5
o
n
r t
l l o
r e
P
C I
2
4
F
J
1
o
n
r t
l l o
r e
P
C I
2
4
F
J
1
e r
a
m
n i
g
C
o
n
r t
l l o
r e
T
A
S
1
0
2
0
B
CS42528-CQZ
P
A
M
P
L
M
E
4
9
8
6
0
NC7SV157P6X
T I
T
D
R
V I
E
R
N
C
7
W
Z
1
7
E
P
R
O
M
2
4
L
C
6
4
I -
S /
E
P
R
O
M
2
4
L
C
6
4
I -
S /
TS3USB221ARSER
NE5532ADR
O
M
2
4
L
C
1
6
A
R
e
g
l u
t a
r o
A
M
S
1
1
1
7
R
e
g
l u
t a
r o
T
L
V
1
1
1
7
L
R
e
g
l u
t a
r o
A
M
S
1
1
1
7
S
N
7
4
A
H
C
SN74HC74PWR
e
g
t s i
r e
7
4
H
C
5
9
5
P
t A
e t
n
u
t a
r o
N
J
W
1
1
9
4
p
A
m
p
T
L
0
8
2
C
D
R
O
T
2
3
8
S ,
O
T
2
3
1
L
T
1
G
2
8
G
B
1
0
6
T
I -
P /
T
2
8
G
B
1
0
6
T
I -
P /
T
P
F
B
M
A
N /
O
P
B
P
6
X
N
N
/
2
4
L
C
1
6
B
T
I -
S /
, N
S
O
8
3 -
3 .
V
3
3
D
C
Y
5 -
0 .
1
G
1
2
5
D
C
K
W
1 ,
1
8
V
T -
E
1

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