trig in
C165
100N
R2 8 7
1 0 K J
R2 8 8
6
k
8
D13 8
4 v7
232
gnd
5
1
4
2
3
J 10 1A
17 - 0 2 0 0 1
-
5 5
R28 4
4 7 0 R
232
gnd
1
PB 1
1
PB 2
2
1
SW 1
SW (T OU CH
)
1
2
3
4
P1 10
T O
M A IN
Wh i t e
l e d
b r i g h t n e s s
ADJ
L 100
FB
1
2
3
4
CON 10
1
L 105
FB
5V L
C 1 7 6
2 U 2
C 1 7 5
1 0 0 N
D GN D
W/R-L ED
A -L ED
L 104
FB
1
2
3
4
5
6
7
8
C
O
N
1
0
7
5V S
D GN D
1
2
3
4
CON 108
5V S
t ouch
on
PWM -L ED
3V 3D
GPO 1
1
GPO 0
2
T OGGL E
/
FS S
3
D EL A Y
4
C
S
0
5
C
S
1
6
V
S
S
7
C
S
2
8
A RST
9
CS3
10
X RES
11
SCA N
R
/
SL EEP
12
V
D
D
1
3
G
P
O
3
1
4
C
M
O
D
1
5
G
P
O
2
1
6
U 101
C Y 8CM B R 204 4
C111
10 0 N
C110
10 U
V CC
GN D
R
13
2
0
R
31
8
0
R
15
4
0
GN D
GN D
GN D
GN D
R
31
1
0
GN D
GN D
C17 4
2
.
2 N F
GN D
C
S
0
R1
18
10
K
R
15
5
56
0
GN D
GPO
GPO
5V L
R
3
1
2
2
2
0R
Q 110
D T C114 EKA
Q 10 9
D
T C114 EKA
D GN D
D GN D
1
2
D
1
0
3
A
M
B
ER
1
2
D
1
5
0
R
E
D
R
1
0
4
2
2
0R
Q 111
D T C114 EKA
D GN D
1
2
D
1
0
2
W
H
IT
E
W/R-L ED
L ED
I n d i c a t o r
R
3
2
0
75
0
1
2
D
1
5
6
W
H
IT
E
1
2
D
1
5
7
W
H
IT
E
R
32
2
75
0
R
32
1
75
0
PW M -L ED
R
1
0
2
4
K
7
Q 112
D T C114 EKA
D GN D
3V 3D
Q 115
D T C114 EKA
Q114
D T A 114
D GN D
A -L ED
R
1
0
3
4
K
7
5
V
L
Q 116
D T C114 EKA
D GN D
R
3
4
8
2
2
0R
1
2
D
1
6
4
R
E
D
R
3
4
7
2
2
0R
1
2
D
1
6
3
R
E
D
LED
Trigger
TOUCH
5.
.LED&TRIGGER&TOUCH
BOARD
1
9
Summary of Contents for M27
Page 1: ...NAD SERVICE MANUAL M27 SEVEN CHANEL M27 SEVEN CHANEL AMPLIFIER AMPLIFIER...
Page 6: ...6...
Page 26: ...1 MCU BOARD 26 PCB LAYOUT TOP Layer Bottom Layer...
Page 27: ...27 2 REGULATED SUPPLY BOARD Top Layer Bottom Layer...
Page 28: ...28 3 AMP BOARD Top Layer Bottom Layer...
Page 29: ...29 4 NC400 OEM BOARD Bottom Layer Top Layer...
Page 31: ...31 8 SMPS BOARD Bottom Layer Top Layer...
Page 32: ...32 9 SMPS STB BOARD 1 2 Bottom Layer Top Layer...
Page 33: ...33 9 SMPS STB BOARD 2 2 Bottom Layer Top Layer...