NAD C446 Service Manual page 20

POWER BOARD
100nF/250VAC
R911
330k
J901
R917
3
330k
2
ZV901
1
TUR10D471
L902
CON3 R918
10mH
330k
FUSE901
T1.25A250VAC
+12VP Q901
2SB647-D
R901
47K
C901
C903
104 100uF/25V
R902
4.7K
U901
PGND1
AC1
CX901
CY902
1nF/1KV
CX902
3
330nF/250VAC
L903
10mH
CY904
1nF/1KV
TH902
1
AC2 5D-11
K901
HF36F/012-HST(555) 3
PGND1
D905
0.8A600V
BR902
TH901
2 3
AC2
D901
5D-11
P6KE200A
C904
AC1
10uF/400V
D902
UF4006
PGND1
D903
MUR120
U902
+5V 5
S D
6
S
R903
470R
PC817 7
S BP
8
C902 S UV
104
TNY274PN
PGND1
STB
1
R914
47k/2W
C917
D906
10nF/1kV
R913 2
KBP208
C918
2 750K
68uF/400V
D909
UF4006
R920 3
750K
D910 4
2
1 2 MURS120
C931
R921 220pF 5
4 680K
3 4
C925
R905
100R
U905
4.7uF/50V
TOP244Y
+12VP
1
100R
C
R912
M7A
C924
100nF
R919
6.8k C923 R922
47uF 6.8R
CY901
1nF
1 L901
D904
10uH, 2.6A 1000uF/10V
1N5822
8 C908
2
C909
C907
4
R907
6 1000uF/10V 100nF
100R
C906 5
R909
T901
EE16 5.1K
R906
47UF/50V U903 PC817
4 1k C910
R908
104
10k
R904
22K
C905
2 104 IC901 1
PGND1 TL431
R910
1 PGND1
5.1K
Page 20
CY903
1nF/1KV
U904 NJM78M12FA
7 330UF/50V 1 3 +12V
IN OUT
104
GND
D907 104
330UF/25V
MURS120 C919
C912 C922
C913
6
C914
C921
D908
104 104
MURS120 330UF/25V
C920
8 2 3 -12V
IN OUT
330UF/50V C915
R924 62R
U908 NJM79M12FA
101
C928 L904
2200uF/16V
9 +8V
104 22uH 104
C927
10 D911
T902 MUR1020CTPbF
C926
C916 C930
EEL25 2200uF/16V
R925
200R
U906 PC817
R928
5.1K 1%
R926
1k
C929
R927
10k
IC902
1 104
TL431
R929 R930
2.4k 1% 47k 1%
C911
104
+5V
S901
J902
+12V
1
-12V
2
AGND
3
GND
4
GND
5
+8V
6
+8V
7
STB
8
GND
9
+5V
10
CON10
S902 S903