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
C1_16
4700uF/80V
12
R1_13
22R 1W
12
R1_19
0.1R 3W
A
2
K
1
D1_6
1N4148
+73V_A
A
2
K
1
D1_15
1N4004
GND1
2xMJL21193
B
CE
Q1_1
MJE15030
1 2
R1_21
470R 3W
1 2
C1_13
22nF/100V poly
1 2
C1_11
3.3nF/50 cer
1 2
C1_12
3.3nF/50 cer
12
R1_17
4R7 1W
12
R1_18
4R7 1W
GND1
A
2
K
1
D1_19
1N4148
EC
B
Q1_2
MJE15031
A
2
K
1
D1_10
1N4148
B
CE
Q1_4
1 2
R1_14
22R 1W
1 2
R1_20
0.1R 3W
GND1
-73V_A
A
2
K
1
D1_17
1N4004
A
2
K
1
D1_11
1N4937
A
2
K
1
D1_12
1N4937
1 2
C1_9
2.2nF/50 cer
12
C1_10
22nF/50 cer
A
2
K
1
D1_13
ZD5V6 1/2W
12
R1_9
820R
12
R1_11
1K5 2W
12
R1_10
820R
1 2
R1_12
1K5 2W
A
2
K
1
D1_14
ZD5V6 1/2W
A
2
K
1
D1_7
1N4148
Vic+
A
2
K
1
D1_3
ZD15V1.3W
+
1
G
2
C1_8
220uF/25V
GND1
12
R1_32
100R
GND1
Vic-
1 2
C1_5
56pF/50 cer
1 2
R1_3
10K
1 2
C1_7
27pF/50 cer
1 2
R1_6
12K SPEAKERS BUS
12
R1_5
330R
12
C1_6
47uF/16NP
GND1
12
R1_30
4K7
12
R1_31
4K7
GND1
CH1 GAIN
+
1
G
2
C1_27
47uF/25V
A
2
K
1
D1_8
ZD15V1.3W
+
1
G
2
C1_4
220uF/25V
GND1
1 2
C1_25
100pF/50 cer
+
1
G
2
C1_26
47uF/25V
12
C1_3
100pF/50 cer
+
1
G
2
C1_23
10uF/50V
GND1
+
1
G
2
C1_24
10uF/50V
1 2
R1_8
NTC 50R
1
1
2
2
3
3
R1_16
TRIMMER 100R
3
2
1
U1_1A
NJM4580L
5
6
7
U1_1B
NJM4580L
84
U1_1C
NJM4580L
Vic+
Vic-
B
EC
Q1_3
1
1
2
2
3
3
R1_29
3P-2.5
MIS9-CH1.Sch
Titel
Size
File:
Date:
Drawn By:
Sheet
RevisionModel No:
16-Mar-2004
C.C.LIN
ALTO MISTRAL1500-CH1 DRIVE
32of
MISTRAL1500
VER040302
A2
3
2
1
U2A
NJM4580L
1 2
R1_42
4K7 1/8W
1 2
R1_41
4K7 1/8W
1
2
3
4
D1_9
W2 - 04
GND1
1 2
R1_25
47R
4
4
1
1
2
2
3
3
U1_2
VTL5C2
GND1
(FTR VT90N1 VACTEC+)
GND1
CH1 I NS ER T OUT
CH1 INSERT IN
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
J4
HEADER 7X2
GND1 GND1
1 2
L1_1
2uH 10A
1 2
R1_26
5R6 2W
12
R1_22
10R 3W
12
C1_2
100nF/250V poly
GND1
CH1 OUTPUT
1+
1-
GND1
TO
SPEAKON PCB
12
R1_36
120K
C1_1
47uF/100V
A
2
K
1
D1_2
1N4004
12
R1_39
PTC 65R
CH1 PHOTO COUPLER
-15V
+15V
GND1
12
R1_37
12K
(1.5A 200V)
(1.5A 200V)
+
1
G
2
C1_15
4700uF/80V
12
R1_7
330R
12
R1_4
330R
11A
6A
6A
12
C1_14
3.3nF/100 poly
1 2
R1_15
150R
0.2A
0.2A
84
U2C
NJM4580L
+15V
-15V
12
D1_18
3mm RED LED
CH1_LIM_SW1
CH1_LIM_SW2
12
D1_21
3mm YELLOW LED
1
1
2
2
J1_6
CON2
1 2
R1_27
10K
1 2
R1_1
10K
1 2
R1_2
10K
12
R1_28
10K
CH1 IN+
CH1 IN-
CH1 IN+
CH1 IN-
CH2 IN+
CH2 IN-
CH1 BRIDGE SWITCH CH2 BRIDGE
CH1_LIM_SW1
CH1_LIM_SW2
CH2_LIM_SW1
CH2_LIM_SW2
CH1 BRIDGE SW ITCH
Pout=418W RMS @ 4 Ohm
12
D1_16
3mm GREEN LED
Vic-
Vic+
12
R1_33
3K3 1/2W
OPERATING LED
OUTPUT_1 OUTPUT1
1 2
F1_1
5A
1 2
F1_2
5A
OUTPUT_1
12
R1_34
47K
12
R1_38
10K
100R
10K
A
2
K
1
D1_5
ZD15V1.3W
1 2
D1_4
5mm RED LED
GND1
GND1
+73V_A
-73V_A
1 2
R1_35
100K
1 2
R1_40
6K8
B
CE
Q1_6
MPSA42
B
EC
Q1_5
MPSA92
Vic+
Vic-
GND1
CLIP
1
1
2
2
3
3
J1_4
CN-PCB 6.3
1
1
2
2
3
3
J1_5
CN-PCB 6.3
1
2
3
4
D1_20
W2 - 04
1
1
2
2
3
3
J1_7
CN-PCB 6.3
1
1
2
2
3
3
J1_8
CN-PCB 6.3
1
1
2
2
3
3
J1_9
CN-PCB 6.3
1
1
2
2
3
3
J1_10
CN-PCB 6.3
V+
V-
AC1
GND
1
2
J1_11
CON2
1
2
J2_11
CON2
GND1
CH1 IN+
CH2 IN+
for PBM8

Alto MISTRAL 900 Specifications

General

Brand	Alto
Model	MISTRAL 900
Category	Amplifier
Language	English