Alto ACL8, Service Manual

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1
2
3
4
A B C D
4
3
2
1
D C B A
LED.Sch
Ti Size File: Date:
Drawn By: Sheet
Revision
Model No:
30-Aug-2002
SCOTT YANG
CO
2
2
of
CLE8.0
V1.0
A3
5 4
2
IC2A
BA10339
1
6 7
IC2B
BA10339
8 9
14
IC2C
BA10339
10 11
13
IC2D
BA10339
5 4
2
IC1A
BA10339
1
6 7
IC1B
BA10339
8 9
14
IC1C
BA10339
10 11
13
IC1D
BA10339
5
4
2
IC3A
BA10339
1
6 7
IC3B
BA10339
8 9
14
IC3C
BA10339
10 11
13
IC3D
BA10339
5
4
2
IC4A
BA10339
1
6 7
IC4B
BA10339
8 9
14
IC4C
BA10339
10 11
13
IC4D
BA10339
T2 HR
R2
560R 1/4W
R6 39K2 R5 15K
+15V
LD9 GN LD10 GN LD11 GN LD12 GN LD13 GN LD14 YE LD15 YE LD16 RD
R16 110R R17 100R R18 200R R19 402R R20 806R R21 1K58 R22 3K24 R23 6K34 R24 8K06
+15V
R7 1K R8 2K
R9
3K01 R10 4K02 R11 4K99 R12 4K99 R13 4K99 R14 4K99 R15 86K6
-15v
T1 HR
R1
560R 1/4W
R3 15K R4 39K2
LD8 RD LD7 RD LD6 RD LD5 RD LD4 RD LD3 RD LD2 RD LD1 RD
+15V
INPUT/OUTPUT LEVEL ( dB )
GAIN REDUCTION (dB)
HR : 2SA1036(PNP) BR : 2SC2412(NPN)
CH1-REDUCTION CH2-REDUCTION
R117[2~8] 0R[2~8]
R118[1] 0R[1]
T5 HR
R25
560R 1/4W
R27 39K2
4 5 6
P
SW4B SW-PBA/6PC
10 11 12
P
SW2D SW-PBA/12PC
LD28
YE
-15V
LD24 GN
1 2 3
P
SW6A SW-PBA/12PC
7 8 9
P
SW6C SW-PBA/12PC
4 5 6
P
SW2B SW-PBA/12PC
LD26 GN LD27 GN LD25 YE
1 2 3
P
SW5A SW-PBA/6PC
1 2 3
P
SW3A SW-PBA/6PC
+15V
R26
15K
SW6A-2
I/O METER BYPASS
SC FILTER
INTERACTIVE
AUTO
3 12
IC2E
BA10339
3 12
IC1E
BA10339
3 12
IC3E
BA10339
3 12
IC4E
BA10339
R28
22R 5% 1/4W
-15V
C1 100N
+15V
C2
47UF/25V
3 12
IC10E BA10339
4 11
IC6E TL064
4 11
IC7E TL064
4 11
IC8E TL064
4 11
IC9E TL064
4 11
IC11E TL064
C3 100N
C4 100N
C5 100N
C6 100N
+15V
-15V
C22
47uF/25V
R28
CH1-REDUCTION
LIMITER SW1C T3 T4
CH2-LEVEL
R125[1]
0R[1]
R126[2~8]
0R[2~8]
CH1-LEVEL
1 2 3 4 5 6 7
CN2[1/2/3/5/6/7] CN2.0-7P-90
1 2 3 4 5 6 7
CN17[2/3/4/6/7/8] CN2.0-7P-180
1 2 3 4 5 6 7
CN18[5] CN2.0-8P
4. Schematic Diagram
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