Yamaha KMA-1000, Service Manual

Page: 40 / 68

A B C D E F G H
1
2
3
4
5
6
I J K L M N O
7
8
9
10
40
KMA-1000/KMA-950
* All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
* Components having special characteristics are marked Z and must be replaced
with parts having specifications equal to those originally installed.
* Schematic diagram is subject to change without notice.
OPERATION 1/2
5.1
5.1
0 0
0
1.4 1.4 0.7 1.4 0.7 1.4 0.7 0.7 1.4
0
0.7 0.7 0.7 0.7 0.7 5.1 5.1 4.6 0.7
0.7 0.7
0
0
0.7
0.3
7.9
4.8
3.7
0
6.0
0.3
7.9
4.8
3.7
7.8
4.8
3.7
7.9
4.8
3.7
7.8
4.8
3.7
7.9
4.8
3.7
7.9
4.8
3.7
7.8
4.8
3.7
7.7
4.8
3.7
7.7 5.5 7.7 5.4
7.8
5.5
7.8
5.4
7.8
5.4
7.8
5.3
7.9 5.5 7.9 5.4 7.9 5.5 7.9 5.3
7.9
5.5
7.9
5.4
7.9
5.4
7.9
5.3
7.9
4.9
7.9
4.9
7.8
5.5
7.8
5.4
7.8
5.4
7.8
5.3
7.8
4.9
7.9 5.5
7.9 5.4 7.9 5.4 7.9 5.3 7.9 4.9
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
0 2.0
7.8
7.9
5.5
5.5
5.4
7.9
5.5
5.4
7.8 5.4 7.8 5.4
7.9 5.4
7.9 5.4
7.8 5.3
7.9 5.3
7.9 5.3
7.8 4.9
7.9 4.9
7.9 4.9
0
6.0
0.3
0
6.0
0.2
0
7.0
0.3
0
5.9
0.2
0
7.0
0.2
0
7.0
0.3
0
5.7
0.2
0
6.9
0.7
9.5 9.5
8.4 8.4
9.7 9.7
4.8 3.7
9.2
9.7
5.5
9.5
9.7
5.4
9.5
9.7
5.4
9.5
9.7
5.3
9.5
9.7
00
00
5.1
5.1
0
4.9
0 0
0.7
8.4
0
0.7
8.4
0
0.7
8.4
0
0.7
8.4
0
0.7
0.7
2.5
2.5 0.7
8.4
0
CB706
CB707
IC701
OPERATION (2)
Page 41 F2
to OPERATION (5)_W701
Page 37 H6
to FUNCTION (1)_CB15
KEY CONTROL
-5
-4
-3
-2
-1
Y
+1
+2
+3
+4
+5

2
KEY CONTROL
KEY CONTROL
KEY CONTROL
MUSIC
MUSIC MIN
MUSIC MAX
0
1
2
3
4
5
6
7
8
9
10
DVD
AUX
TAPE
BGM
INPUT
ECHO MIN
ECHO MAX
0
1
2
3
4
5
6
7
8
9
10
ECHO
ECHO
MUSIC
MIC MIN
MIC MAX
MIC
0
1
2
3
4
5
6
7
8
9
10
MIC
LATCH
CIRCUIT
SHIFT
REGISTER
CONTROLLER CIRCUIT
DATA P1
P2
P3
P4
P5
P18
P19
P20
SO
CLK
STB
CLR
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
P9
P10
P11
P12
P13
P14
VSS
NC
P15
P16
P17
P18
P19
P20
SO
VDD
P8
P7
P6
P5
P4
P3
NC
VSS
P2
P1
CLR
STB
CLK
DATA
IC701 : NJU3718AM
20-bit Serial parallel converter
KMA-1000