Alto SR400A, Service Manual, Page: 6 / 26

1
2
3
4
5
6
7
8
A B C D
8
7
6
5
4
3
2
1
D C B A
2 1 3 4
MIC2
CN-BAL-MALE
ZD5
12V1W
ZD2
12V1W
ZD4
12V1W
ZD3
12V1W
R16
15K
R19 15K
R18
15K
R15
15K
R14
390E
1
2 3
+ _
IC3A
33079
7
6 5
+ _
IC3B
33079
8
9
10
+ _
IC3C
33079
14
13 12
+ _
IC3D
33079
C23
22P
C20
22P
C19 22P
C26
22P
C27
0.01uF/400V
R22
10E
1 2 3
SW2A
SW PS-22E85L
4 5 6
P
SW2B
SW PS-22E85L
GND
1
2
3
VR1 D50K
R17
4.7K
R21
820E
8
9
10
+ _
IC1C
33079
C16
0.0033u
R12
10K
R10
10K
7
6 5
+ _
IC1B
33079
C5
0.0033u
R7
10K
R2
10K
R11
6K8
R1
6K8
C21
47u/63V
C22
47u/63V
C2
47u/63V
C1
47u/63V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
CN2 CN-10PX2-180
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CN1 CN-7PX2-F
C17
47u/63V
1
2 3
+ _
IC1A
33079
C7
22P
R4
10K
R5
10K
C6
0.0033u
R3
6K8
14
13 12
+ _
IC3D
33079
1 3
2
DL1 SIGN/LIMIT
R9
1K2
+15V
-15V
+5VD
+15V -15V
NC
1
OUT
2
NC
3
GND
4
GND
5
NC
6
V+
7
NC
8
NC
9
FB
10
FC
11
GND
12
GND
13
OSC
14
SS
15
NC
16
IC2 L4962
C4
220u/63V
C9
330P
C12
0.0022u
R8
3K9
R6
15K
C8
0.033u
C13
2u2 100V
4 3
2 1
5
L1
TP-SEV1924-03
C25
470u/25V SLL*
C24
1000u/6V3
+5VD
D1
BYV27
R13
330E
11 4
IC1E
33079
11 4
IC3E
33079
C14
470u/25V SLL
C10
470u/25V SLL
C15
0.1u
C11
0.1u
+15V -15V
CLIP SIGNAL
R G
X1
X2
X3
1 2 3 4 5 6
MIC1
XLR
+5VA
HIGH
LOW
FROM INPUT TO 313115-1 DSP BOARD
HIGH INPUT +4dB
L2
FL5R
L3
FL5R
C28
10u/63V
C18
10u/63V
C29
10u/63V
SW1 0E
Title Size:
A3
Number
Date: File:
Sheet of: Drawn By:
Revision
SR400A
P-110018-SR400A
2004/08/27 SR300A
1/1
MO GUO ZHU
VER1.0
TO 313120-1 AMP PCB
1
第
版
03-1