Alto Macro-2400, Macro-1400, Macro-830 Service Manual
Service Manual
MODEL: MACRO830/1400/2400
LTO
www.altoprpaudio.com
Version: 1.0
R
CONTENTS
1. Specification............................................2-4
2. Block Diagram..........................................5-6
3. Schematic Diagram...................................7-16
4. Printed Circuit Board.................................17-27
5. Wiring Diagram........................................28-30
6. Test Procedure.........................................31
7. Electrical Parts List...................................32-35
8. Exploded Views........................................36
9. Exploded Views Part List...........................37
1
1. Specification
SEKAKU ELECTRON INDUSTRY CO., LTD.
Model No MACRO 830(Amplifier) USER OF VP-7724A
Tester: Test Date: 2002,11,29
Test Item Test Conditions Spec Test Result Remark
Test Result
1 Power Source
Rated Output
2
(BRIDGE)
3
Rated Output
4 Signal/Noise
5
Distortion
6 INPUT
SENSITIVITY
8
4
Load 4
Load 8
Input 1KHz 6dB
Load 4
Input 1KHz 6dB
BAL
AC:
115/120/230/240V AC: V
600W W
850W W
300W+300W W+W
N/A N/A
90dB
105dB (A)
0.1%
1%
(10W)
(300W)
dB
dB(A)
%
%
CLIP ON
INPUT 1KHz (CLIP ON)
VR MAX (CLIP ON)
CHA,CHB
7
FILTER
8 PUNCTURE
VO LTAG E
FREQUENCY
9
RESPONSE
10
-3.5 1dB
STEREO
STEREO IN (30Hz)
5mA 5Sec 1800V 1800v
Input 6dB , 1KHz
Load 4
(BAL OR
STEREO)
0/+5
-8.5
1dB
1.5dB
28Hz-
24KHz
2
dB
dB
dB FILTER ON
Hz
CHA,CHB
OUTPUT 6.8V(10W)
SEKAKU ELECTRON INDUSTRY CO., LTD.
Test Result
Model No MACRO 1400 (Amplifier) USER OF VP-7724A
Tester:
Test Item Test Conditions Spec Test Result Remark
1 Power Source
8
Rated Output
2
(BRIDGE)
4
Rated Output
3
4 Signal/Noise
5
Distortion
Load 4
Load 8
Input 1KHz 6dB
Load 4
Input 1KHz 6dB
Test Date: 2002,11,29
AC:
115/120/230/240V
900W W
1400W W
450W+450W W+W
N/A N/A
90dB
105dB (A)
0.1%
(10W)
AC: 115V
dB
dB(A) VR MAX (CLIP ON)
%
INPUT 1KHz (CLIP ON)
CLIP ON
6
SENSITIVITY
7
8
PUNCTURE
FREQUENCY
9
RESPONSE
INPUT
FILTER
VOLTAGE
(450W)
BAL
STEREO
STEREO IN (30Hz)
5mA 5Sec 1800V 1800v
Input 6dB , 1KHz
Load 4
(BAL OR
STEREO)
1%
-3.5 1dB
0/+5
-8.5 1.5dB
1dB
28Hz-
24KHz
%
dB
dB
dB FILTER ON
Hz
CHA,CHB
CHA,CHB
OUTPUT 6.8V(10W)
3
SEKAKU ELECTRON INDUSTRY CO., LTD.
Test Result
Model No MACRO 2400(Amplifier) USER OF VP-7724A
Tester:
Test Item Test Conditions Spec Test Result Remark
1 Power Source
8
Rated Output
2
(BRIDGE)
4
Load 4
3
Rated Output
Load 8
4 Signal/Noise
5
Distortion
Input 1KHz 6dB
Load 4
Input 1KHz 6dB
Test Date: 2002,11,29
AC:
115/120/230/240V
1500W W
2400W W
750W+750W W+W INPUT 1KHz (CLIP ON)
N/A N/A
90dB
105dB (A)
0.1%
(10W)
AC: V
dB
dB(A)
%
VR MAX (CLIP ON)
CLIP ON
6 INPUT
SENSITIVITY
7
FILTER
8 PUNCTURE
VOLTAGE
FREQUENCY
9
RESPONSE
BAL
STEREO
STEREO IN (30Hz)
5mA 5Sec 1800V 1800v
Input 6dB , 1KHz
Load 4
(BAL OR
STEREO)
1% (750W)
-3.5 1dB
0/+5
-8.5
1dB
1.5dB
28Hz-
24KHz
%
dB
dB
dB FILTER ON
Hz
CHA,CHB
CHA,CHB
OUTPUT 6.8V(10W)
4
2 . BLOCK DIAGRAM
MACRO 830/1400 BLOCK DIAGRA14M
BRIDGED
5
MACRO 2400 BLOCK DIAGRAM
BRIDGED
6
3. Schematic Diagram
D
8
C
2-
BR POS
1+
2+
1-
B
BR NEG
A
DrawnBy:
8
C
Number RevisonSze
D
Ti le
Date: 19-Dec-2002 Sheet f
Fie: D:
SP A
7
6
5
VCC_A
be modify
-VCC A
SP A
BR BA
7
6
5
be modify
4
4
7
be modify
8
+15V A
SP A
3
1
be modify
3
2
2
1
D
C
4
5
6
+14V
2
1
15V A
+ CC_A
TH A
3
2
4
11
6
1
5
7
8
-BYP B
R-CUT
4
6
8
10
12
14
16
18
3
5
7
9
11
13
15
17
BR-RET
BR BA
B
-14V
-30-B
-IN B
CLIP-B
20
22
24
26
19
21
23
25
+INB
SND-B
A
3
2
1
7
D
C
B
A
8
7
VCC B
6
5
2-
BR PO
BR_NEG
1+
2+
1-
SPB
VCC_B
DrawnBy:
C
Number RevisonSize
D
Ti le
Date: 19-Dec2002 She f
Fie: D:
7 8
6
5
be modify
4
4
be modify
3
+15V
2
1
be modify
3
2
1
INB
-INB
7
be modify
8
4
5
VCC B
+14V
14
15
13
16
2
10
9
30-B
F BYP-
F -SND-B
-15V B
VCC B
-14V
CLIP B
BR_RE
3
2
1
D
C
B
A
8
D
C
B
A
8
7
6
5
+15V A
15V B
+14V
BR CUT
15V_B
15V A
1
2
1
2
-14V
4
5
6
3
2
DrawnBy:
C
Number Rev sionSize
D
File: D:
Date: 19-Dec 2002 She t f
Title
7 8
6
5
2
1
4
VCC B
-VCC A
+VCC A
3
BLU
BLK
BLU
2
GRN
YEL
VCC_B
VIO
BLK
VIO
BLK
RED
WHT
TH A
4
3
2
1
GND
LINE
NEUT
D
C
B
A
1
9
D
C
B
A
8
Revision
8
y:
Sheet of
DrawnB
C
7
1
2
3
4
5
6
7
65
1
1
2
3
4
5
6
7
3
5
7
9
11
13
15
17
19
21
23
25
2
4
6
8
10
12
14
16
18
20
22
24
26
Title
Number
A3
Size
7
Date: 19-Dec-2002
File: D:\
6
5
15
13
11
9
43
7
6
5
4
3
2
1
R
T
2
3
1
2
S
7
6
5
4
3
2
1
7
5
3
1
R
T
S
16
14
12
10
8
6
4
2
2
3
1
4
3
2
1
D
C
B
A
1
10
D
8
C
2-
BR POS
1+
2+
1-
B
BR NEG
A
DrawnBy:
C
Number RevisonS ze
D
Tt le
Date: 19-Dec 2002 Shee f
Fle: D \
SP A
7
6
5
CC_A
VCC A
SP_B
BR BAL
7 8
6
5
4
7
be modify
8
+15V A
3
1
be modify
3
2
2
1
4
5
6
+14V
2
1
-15V A
+VCC A
3
2
4
11
6
1
5
7
8
-30-B
F-BYP-B
CLIP-B
BR-CUT
4
6
8
10
12
14
16
18
20
22
3
5
7
9
11
13
15
17
19
21
TH A
14V
-IN B
24
26
23
25
4
3
2
1
BR-RET
BR_BAL
D
C
+INB
F-SND-B
B
A
11
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