YORKVILLE PSA1s Instructions De Service page 6

A B C
4010
R2
1
1.0W
J5 9K76
0.5% D7
R80
4148
Input 681R0
470P
0.1%
Input C1
50V
J3
R4
113K
.
UP DOWN Line/Speaker
3522
R1
113K 3522
2
. UP DOWN Line/Speaker
R5
113K
.
470P
C2
R81
50V
681R0
4148
Link 0.1%
D8
R3
J4
1.0W
9K76
3 0.5%
J2
4
18AWG
R98
L2 G/Y
265V
48R
18uH
GND
6543
4135 3899
C17
5 15P 100V
R33
1/4W
31K6
.
R36 R35
1/4W TL072 1/4W
20K0 20K0
MINI MINI
U6:A
R38
150K
6
.
U4:B
LM13600N LM13600N
(VCC)
LM13600N R29 R30
U4:C 249R 249R
6745 . .
7
Dual VCA R40
{Function} 10K0
MINI
(VCC)
LM13600N
U4:D
6745
Dual VCA
{Function} 2N5401
Q2
8
5108
4148
TO92
D14
C18 C19
470N 63V 470N 63V
R46 R45
1/4W 1/4W
470K 220K
. .
9
Use YS#4007
TL072
4148
R47
1/4W
D13 4K7
.
U8:A
Limit
LD3
YEL
6400
R51
10
1K5
R48
.
10K
MPSA06 .
Q3
5103
TO92 R49
49K9
.
11
A B C
D E F G
C29
100P 100V
U1:C
4148 R8 R6
D1 1/4W 1/4W
17K40 9K76
TL074CN 0.1% 0.1%
4148
D5
U1:A
S1:A R10
U1:E 1/4W
S1:B
4K7
TL074CN .
TL074CN
R9 R7
D2 1/4W 1/4W
4148 17K40 9K76
0.1% 0.1%
U1:B
C3
100P 100V
100N 100N
C30 C31
63V 63V
W6
C16
C12
15P 100V
RAD .2in
100N 63V
R34
1/4W
31K6
.
R21 R19
1/4W 1/4W
27K 27K
. .
TL072 39N
C11
U6:C
100V
U6:B
R37
150K
.
12dB LP @ 95Hz
U4:A
R58
1/4W
20K0
100N 100N MINI
R31 R32
C34 C35
249R 249R
63V 63V
. .
R39
10K0
MINI
TL074CN
1N5242B
R52
ZD2
U3:D
22M
12V0
1
. 0W5 2 W4:A
2
R60 2 W4:B
21K5
V+ From
.
Power Supply
R59
21K5
.
1N5242B
ZD1
12V0
R44 0W5
6K04
.
D19 R43
1/4W
2K43
4148
.
Rail-Tracking Peak Limiter
50V 22U 50V 22U
C21 C20
R63 R62
1/4W 1/4W
68K 10K
. .
TL072
4148
R61
1/4W U8:C
D15 4K7
.
U8:B
R64
27K
.
Power Limiter
D E F G
H I J
Boost 3.5dB @ 40Hz
U1:D
R54
1/4W
10K
.
TL074CN
R55
10K
.
R25
1/4W
24K
R23 R24
.
470R 820R
C14
Level
. .
470P 50V
M
R53
P1:A 10K
1/4W
4459 B
P1:B 2K2
.
C5 C4
150N 63V 220N
R20
1/4W
24K
.
C13 C10
RAD .2in RAD .2in U5:D
100N 63V 100N 63V
U5:C
R22
68K MC33079P
U5:E
.
MC33079P
12dB HP @ 40Hz
R41
1/4W
20K0
R57
MINI
1/4W
20K0
4148 4148
R42
MINI
1/4W
10K0 D12 D10
MINI
R56
TL074CN 1/4W
20K0
MINI
U3:C
Full-Wave Rectifier
R77 R78
15K 15K
. .
4148 4148
D22 D23
R74
49K9
R79
TO92
.
31K6
.
5107
Q4
4148 R75
2N5551
D24 49K9
TO92
.
5107
Q5
R76
2N5551
49K9
.
H I J
K L M
C15
RAD .2in
100N 63V
MPSA13
R27
1/4W
150K 4148
.
D3
TO92
4148
R26
D11
22K
4148
U2:B .
D4
R16
1/4W
27K
MC33079P .
C7
RAD .2in
100N 63V
R13 R14
1/4W 1/4W
10K 10K
. .
R15
C27 1/4W
27K 4148
470P 50V
. D17
R12 39N
1/4W
C6
2K2
100V
.
U2:A
63V
12dB LP @ 95Hz
R11
220K MC33079P
.
X1
R71
10K
.
U3:A
TL074CN
R73
1/4W
24K
.
R72
10K
.
U3:B
U3:E
TL074CN
K L M
N O P
Use YS#4007
Clip
LD1
RED
R28
6405
1/4W
Q1 1K5
100N 100N
.
5105
C32 C33
Clip @ approx 12.7Vpk
63V 63V
R18
1/4W
24K
.
C9 C8
RAD .2in RAD .2in U2:D
U2:C
100N 63V 100N 63V
4148
D18
U2:E
MC33079P
MC33079P
R17
68K
.
12dB HP @ 40Hz
Amp Headers
1
14 W1:A
R88 R86
2
W1:B 14 1/4W 1/4W
619R 4K99
3
W1:C 14
. MINI
4
14 W1:D
5
14 W1:E
R91
6
1/4W
14 W1:F
MC33079P
619R
7
.
14 W1:G
8
14 W1:H
9 U5:B
14 W1:I
10
14 W1:J
11
14 W1:K
12
14 W1:L
13
14 W1:M
14
14 W1:N
1
14 W2:A
2
W2:B 14
R92 R87
3
W2:C 14 1/4W 1/4W
619R 10K0
4
14 W2:D
. MINI
5
14 W2:E
6 MC33079P
14 W2:F
R93
7
1/4W
14 W2:G
619R
8
.
14 W2:H
U5:A
9
14 W2:I
10
14 W2:J
11
14 W2:K
12
14 W2:L
13
14 W2:M
100U 100U 100U
14
14 W2:N
C42 C40 C41
25V 25V 25V
Product PSA1s
Preamp
PCB# M1449 Sheet
Date: Tue Jul 17, 2012 Rev: V02 YsType: YSL
Filename: M1449V02SCH.sch2006
N O P
Q
1
2
3
4
R89
5
10K0
MINI
6
R90
7
10K0
MINI
8
9
10
1 of 3
11
Q