NAD CI 940 - Page 13

4.PSU & DCDC BOARD
15
NTC901
SCK200710LSY
C927
1nF
R959
2.2K
R921
100K
R906
47K
C921
220nF/25V
R976
0R33
R977
0R33
GNDP
R946
3K
R908
1.8K
Q913
FDP18N50
Q912
FDP18N50
Q906
BC807-25
R929
10R
GNDP
C919
1.2nF/200V
R952
12R/1206
C920
1.2nF/200V
R953
12R/1206
SGND
2
1
3
4
BR901
15A/1000V
C910
1UF
C916
150P/200V
R978
22R
0 1
S903
GNDP
AC120V/230v±10%
C911
150P/200V
R951
22R
MAIN IN
ZV901
10D471
CX902
470nF/275VAC
R909
10K
C945
10nF/1000V
CX901
470nF/275VAC
R999
2M
R998
2M
R997
2M
1 2 4 3
L910
20mH
1 2 4 3
L909
20mH
0 1
S901
C902
200V/680UF
C903
200V/680UF
R918
100K
R919
100K
R920
100K
R917
100K
GNDP
L901
22uH/6A
C917
470nF/275VAC
C918
470nF/275VAC
Q923
BC846BW
D907
BAS316
Q918
BC846BW
Q921
BC846BW
OC
C908
10nF/1KV
C909
10nF/1KV
D909
BAS316
D910
BAS316
D911
BAS316
Q927
BC856BW
Q926
BC856BW
R963
10K
R922
100K
R973
4K7
R964
47K
R915
1M
R914
1M
R926
100K
R923
100K
R924
100K
R913
220K
R925
100K
R962
47K
Q922
BC846BW
Q919
BC846BW
Q920
BC846BW
GNDP
GNDP
1IN+
1
1IN-
2
2IN-
15
2IN+
16
FB
3
DTC
4
CT
5
RT
6
GND
7
C1
8
E1
9
E2
10
C2
11
VCC
12
OPCTL
13
REF
14
U904
TL494
Q928
BC856BW
R967
47K
R907
10K
R960
2.2K
R974
1.2K
R966
47K
R944
1K
R965
47K
C924
1n/50V
C926
470P
C925
2.2uF/25V
R975
18K
GNDP
GNDP
R928
2.2R
R943
1K
C907
1u/25V
GNDP
R935
10R
Q903
BC807-16
E
2
C
3
B
1
Q902
BC807-16
E
2
C
3
B
1
Q904
BC817
D901
BAT54J
D902
BAT54J
D904
BAT54J
R936
1K
GNDP
GNDP
Q905
BC817
D903
BAT54J
R937
1K
C904
1U/25V
GNDP
R938
1K
CY901
1nF
R989
2k
R991
13K
R970 3K
C953
104
R990
10k
2 3
1
U911
TL431
D918
UF4006
D919
1N4148
R988
1k
R985
22k
C949
10uF/50V
X1 NC
C956
104
C952
104
C951
1nF/200V
C954
1000uF/25V
C955
330uF/25V
L904 3.3UH
+13VS
+13VR
R987
82R
HV
2
1
3
4
BD901
0.8A600V
C947
104
BP
2
S
5
S
6
D
4
UV
1
S
7
S
8
U908
TNY280
R983
2M
R984
2M
C946
10uF/400V
+13VR
R904
10K
R903
10K
R901
390K
R912
1M
R902
390K
C922
22uF/25V
D905
BAT54J
D906
BAT54J
2 3
1
IC901
TL431
VCC
1
2
3
4 8
U901A
LM393
GNDP
5
6
7
U901B
LM393
R905
10K
1
1
2
2
3
3
4
4
K901
HF36F
VCC
D922
M7A
GNDP
Q901
BT139X-600E
R911
150R
R910
150R
C901
10nF 500V
R916
1K
GNDP
VCC
VCC
VCC
12
T901B
TR
C906
1u/25V
C923
104
C905
1u/25V
OC
D908
BAS316
R972
10K
C961
100nF
STB
C963
100uF/35V
C960
100nF
R993
1K
R994
5.6K
VCC
C962
100uF/25V
C959
100nF
GNDP
C950
100UF/35V
D920
MURS120
VCC1
GNDP
T902
BAW56W
Q911
BC807-25
R930
10R
R945
1K
T903
BAW56W
Q914
AOT412
Q907
BC807-25
R931
10R
R939
1K
T904
BAW56W
Q916
AOT412
Q909
BC807-25
R933
10R
R941
1K
T906
BAW56W
Q915
AOT412
Q908
BC807-25
R932
10R
R940
1K
T905
BAW56W
Q917
AOT412
Q910
BC807-25
R934
10R
R942
1K
T907
BAW56W
C913
150P/200V
R957
22R
C912
150P/200V
C915
150P/200V
R958
22R
C914
150P/200V
D921
MBRS3100T
V+
V-
1
2
3
J903
CON3-3.96
12VD
A
1
K
2
6
6
4
4
U902
MOC3043
U910
PC817
U909
PC817
6 7
T901C
TR
4 5
T901A
TR
14 13
T901D
TR
910
T901E
TR
11 12
T901G
TR
10 8
T901F
TR
4
3
5
6 2
1
8
9
7
10
T909
EE19
F901
1.25AL250Vac
R981
10R
C976
1uF/25V
D912
P6KE200
+13VS
C948
100pF/1kV
SGND
GNDP
GNDP
CY902
1nF
C936
1000UF/35V
D914
MURA220T3
R979
0.1R/1206
C933
1nF/200V
R954
12R/1206
C938
330UF/25V
SGND
C942
104
+15VD
C940
1000UF/35V
D916
MURA220T3
C935
1nF/200V
R956
12R/1206
C941
330UF/25V
SGND
C944
104
-15VD
C965
50V/560UF
C970
100nF/200V
C968
50V/560UF
C966
50V/560UF
L906
65R7A
L907
65R7A
C964
50V/560UF
C971
100nF/200V
C969
50V/560UF
C967
50V/560UF
L905
65R7A
L908
65R7A
SGND
SGND
VOUT-
VOUT+
V+
V-
1
2
3
4
J902
CON4
1
2
3
4
5
6
7
J901
CON7
-15VD
C977
200V/680UF
C978
200V/680UF
SGND
D923
18V3W
1
2
3
16
14
15
8
10
12
11
9
13
T908
EC42
R949
2M
R961
30K
R968
30K
CY903
1nF
CY904
1nF
TH901
90
X4
*
D917
BAS316
R982
10K
VCC
R986
10K
U903
PC817
GNDP
R980
NC
Q924
NC
-15VD
AC Detect
R900
NC
R992
5.6K
X2
NC
AC Detect
0 1
S902
SGND
R947
2.7K
R948
249R
C928
4.7uF
R927
2.7K
C939
4.7UF
R950
249R
OUT
2
IN
3
ADJ
1
U905 LM317
OUT
3
IN
2
ADJ
1
U907
LM337
Q930
DTA114EKA
C937
330UF/25V
C943
100N
12VD
R969
10k
R995
10k
R996
4.7k
C957
10uF/400V
SGND
X3
NC
SGND
C932
10n
R801
10R
EARTH1
C934
10n
R802
10R
EARTH2
5VS
R971
47K
VCC1
IN
1
2
OUT
3
GND
U906 L7812
Q931
2SB647-D
1
2
J904
CON2
S
1
S
2
S
3
G
4
D
5
D
6
D
7
D
8
Q932
AO4423
R955
220R
C930
100P
Q933
2SC3326
Vi
1
Vo
2
g
3
Vd
4
U912 KA78R12
R898
10k
R899
1k
C972
330UF/25V
1 2 3 4 5 6 7 8 9
AC-L AC-N HV-DC AC-DEC AC-SW TBD VCC DC-DET GND
MOD901
MAC
R810
390K
R811
390K
VCC
OC
C973
100N 50V
R813
10K
D913
BAT54J
GNDP
R99
30K
R98
10K
C974
10nF/1000V
5VS
C929
470uF/10V
C931
100n
C811
2.2uF
C810
2.2uF
R826
332k
R827
62K
C813
12nF
C814
100N
D803
B340A-13-F
L804
10uH
C819
100uF
GNDs
C816
5.6pF
C817
2700pF
R828
90.9K
C821
100uF
R830
1R
BOOT
1
VIN
2
EN
3
SS/TR
4
RT/CLK
5
PWRGD
6
VSNS
7
COMP
8
GND
9
PH
10
U801
TPS54140
C812
100nF
R831
80.6k
R834
52.3K
R868
10K
VD
5VS
GNDs
1
2
J888
CON2
GNDs
GNDs
VD
GNDs 1
2
J801
CON2