NAD M27 Service Manual page 13

2. REGULATED SUPPLY BOARD
VAUX+
HS 1
Heat sink
R 323
Q124
0.47
2
1
D162 BAV99
22k
GND
R 333
Q121
C 183
BC846B
10U
GND
GND
R 324
VAUX-
0.47
2
D163 BAV99
22k
GND
R 335
BC 856B
C 180 Q126
10U
GND
P114
10
9
8
7
6
To MCU boar d
5
4
3
2
1
FROM PSU
GND
R 349
A1220
D168
C 182 16V
1U
D170
15V
C 178
47P
R338
R348
680 680
Q122
BC846B
Q123
C 2690
1
C 181
1U
C 179
47P
R 340
R 347
680
Q125
BC 856B
GND
PS _EN PS _EN
+17.5V VAUX+
-17.5V VAUX-
nFATAL nFATAL
OVL OVL
nAMPON nAMPON
AMPOFF AMPOFF
GND
13
+1 7.5V
C 177
10U C 185
100N
GND
D166
CD4148WP
-17.5V
C 186
D169
C 184
100N
16V
10U
GND
D167
C D4148WP
680
R 346
P113
10
9
8
7
6
Fr om SM PS
5
4
3
2
1
FROM PSU