Alto MISTRAL 900 Service Manual

1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
C
B
A
+
1
G
2
C2_16
4700uF/80V
12
R2_13
22R 1W
12
R2_19
0.1R 3W
A
2
K
1
D2_6
1N4148
+73V_B
A
2
K
1
D2_15
1N4004
GND1
2xMJL21193
B
CE
Q2_1
MJE15030
1 2
R2_21
470R 3W
1 2
C2_13
22nF/100V poly
1 2
C2_11
3.3nF/50 cer
1 2
C2_12
3.3nF/50 cer
12
R2_17
4R7 1W
12
R2_18
4R7 1W
GND1
A
2
K
1
D2_19
1N4148
EC
B
Q2_2
MJE15031
A
2
K
1
D2_10
1N4148
B
CE
Q2_4
1 2
R2_14
22R 1W
1 2
R2_20
0.1R 3W
GND1
-73V_B
A
2
K
1
D2_17
1N4004
A
2
K
1
D2_11
1N4937
A
2
K
1
D2_12
1N4937
1 2
C2_9
2.2nF/50 cer
12
C2_10
22nF/50 cer
A
2
K
1
D2_13
ZD5V6 1/2W
12
R2_9
820R
12
R2_11
1K5 2W
12
R2_10
820R
1 2
R2_12
1K5 2W
A
2
K
1
D2_14
ZD5V6 1/2W
A
2
K
1
D2_7
1N4148
Vic2+
A
2
K
1
D2_3
ZD15V1.3W
+
1
G
2
C2_8
220uF/25V
GND1
1
2
3
4
D2_20
W2 - 04
12
R2_32
100R
GND1
Vic2-
1 2
C2_5
56pF/50 cer
1 2
R2_3
10K
1 2
C2_7
27pF/50 cer
1 2
R2_6
12K SPEAKERS BUS
12
R2_5
330R
12
C2_6
47uF/16NP
GND1
12
R2_30
4K7
12
R2_31
4K7
GND1
CH1 GAIN
+
1
G
2
C2_27
47uF/25V
A
2
K
1
D2_8
ZD15V1.3W
+
1
G
2
C2_4
220uF/25V
GND1
1 2
C2_25
100pF/50 cer
+
1
G
2
C2_26
47uF/25V
12
C2_3
100pF/50 cer
+
1
G
2
C2_23
10uF/50V
GND1
+
1
G
2
C2_24
10uF/50V
1 2
R2_8
NTC 50R
1
1
2
2
3
3
R2_16
TRIMMER 100R
3
2
1
U2_1A
NJM4580L
5
6
7
U2_1B
NJM4580L
B
EC
Q2_3
1
1
2
2
3
3
R2_29
3P-2.5
MIS9-CH2.Sch
Titel
Size
File:
Date:
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Sheet
RevisionModel No:
16-Mar-2004
C.C.LIN
ALTO MISTRAL1500-CH1 DRIVE
33of
MISTRAL1500
VER040302
A2
5
6
7
U2B
NJM4580L
1 2
R2_42
4K7 1/8W
1 2
R2_41
4K7 1/8W
1
2
3
4
D2_9
W2 - 04
GND1
1 2
R2_25
47R
4
4
1
1
2
2
3
3
U2_2
VTL5C2
GND1
(FTR VT90N1 VACTEC+)
GND1
CH2 I NS ER T OUT
CH2 INSERT IN
12
L2_1
2uH 10A
1 2
R2_26
5R6 2W
12
R2_22
10R 3W
12
C2_2
100nF/250V poly
GND1
CH1 OUTPUT
1+
1-
GND1
TO
SPEAKON PCB
12
R2_36
120K
+
1
G
2
C2_1
47uF/100V
A
2
K
1
D2_2
1N4004
12
R2_39
PTC 65R
CH1 PHOTO COUPLER
-15V
+15V
GND1
(1.5A 200V)
(1.5A 200V)
+
1
G
2
C2_15
4700uF/80V
12
R2_7
330R
12
R2_4
330R
11A
6A
6A
12
C2_14
3.3nF/100 poly
1 2
R2_15
150R
0.2A
0.2A
12
D2_18
3mm RED LED
CH2_LIM_SW1
CH2_LIM_SW2
12
D2_21
3mm YELLOW LED
1
1
2
2
J2_6
CON2
1 2
R2_27
10K
1 2
R2_1
10K
1 2
R2_2
10K
12
R2_28
10K
CH2 IN+
CH2 IN-
CH2 BRIDGE
Pout=418W RMS @ 4 Ohm
12
D2_16
3mm GREEN LED
Vic2-
Vic2+
12
R2_33
3K3 1/2W
OPERATING LED
OUTPUT_2 OUTPUT2
1 2
F2_1
5A
1 2
F2_2
5A
OUTPUT_2
12
R2_34
47K
12
R2_38
10K
100R
10K
A
2
K
1
D2_5
ZD15V1.3W
1 2
D2_4
5mm RED LED
GND1
GND1
+73V_B
-73V_B
1 2
R2_35
100K
1 2
R2_40
6K8
B
CE
Q2_6
MPSA42
B
EC
Q2_5
MPSA92
Vic2+
Vic2-
GND1
CLIP
84
U2_1C
NJM4580L
Vic2+
Vic2-
1
1
2
2
3
3
J2_4
CN-PCB 6.3
1
1
2
2
3
3
J2_5
CN-PCB 6.3
1
1
2
2
3
3
J2_7
CN-PCB 6.3
1
1
2
2
3
3
J2_8
CN-PCB 6.3
1
1
2
2
3
3
J2_9
CN-PCB 6.3
1
1
2
2
3
3
J2_10
CN-PCB 6.3
V+
V-
AC1
GND

Alto MISTRAL 900 Specifications

General

Brand	Alto
Model	MISTRAL 900
Category	Amplifier
Language	English