NAD M22 Service Manual page 21

5.SMPS VM1.0(3/5)
PVBUS
C76 C75
10n 10n
HV
P P
i
R121
HV
10R
D42
i
TR4A
BAW56W T45
2 3
BC807
T46
BC817
R118 R117
1
1k 100R
TCT15
R65
10R
D22
TR4B BAW56W T22
3 3
BC807
T21
BC817
R64 R63
4 1k 100R
TCT15
PVAUX
Sheet5 - Main SMPS Control.SchDoc
PSVAUX PSVAUX
PVSTART PVCTRL
ACDET PROT
i
P S
1n C16
C72
TR2
220p
T1 TR4G
3 12
SPW32N50
R99
14
68R
13
TCT15
R98
HV
68R
i
1 12
S TR4E 3 8
C69
220p
T2
SPW32N50
13
R86
C10
68R 9
470n
TCT15
HV
R79
i
68R 3
ISEN 11
R69
R48
C12
0R018
470n
12R
10
P P
D35
7
SS16
9
6
C11
220u
P 8
5
S
P
PTC
TCT57
ISEN
ISEN
R40 R35
C54
T3
10R 10R
220p
D21 D14
FDP61N20
TR4F
BAW56W BAW56W
R42 3 11
68R
T20
BC807
R39
R41 68R R36
1k 10 1k
TCT15
R17 R10
C43
T5
10R 10R
220p
D9 FDP61N20 D5
TR4D
BAW56W R28 3 7 BAW56W
68R
T17
BC807 R18
R19 68R R11
1k 9 1k
TCT15
+VDR
D18
L10
+VDR
330R/1.5A
MURA220T3
C50
C20 C25
220u 220u
1n
L11
-VDR
330R/1.5A
-VDR
R46 C51
12R 1n
+VAUX
D19
L12
+VAUX
330R/1.5A
MURA220T3 C21 C26
220u 220u
S S
R47 C52
12R 1n
-VAUX
D20
L13
-VAUX
330R/1.5A
MURA220T3
C22 C27
220u 220u
S S
VSW
21
L3
L1 1u/8A
L2 1u/8A
L4
T4 1u/8A 1u/8A
C49
220p
FDP61N20
C18 C19 C30
R37
220u 220u 220u
68R
T19
BC807
R34
68R S S S
S S S
T6
C38
220p
FDP61N20
R2
68R C29 C34 C33
220u 220u 220u
T11
BC807
R3
L9 1u/8A L7 1u/8A
68R
L8 L6
1u/8A 1u/8A
Sheet6 - Seconday Control.SchDoc
PSEN
+5VSB +5VSB
nAMPON
AMPOFF
nFATAL
VSW
VSW
OVL
+VB
+VB
R26
C39
47k
100n
S S
S S
R4
C37
47k
100n
-VB
-VB
PSEN
nAMPON
AMPOFF
nFATAL
OVL