Yamaha YSP 1000 - Digital Sound Projector Five CH..., Service Manual

Page: 65 / 92

A
1
2
3
4
5
6
7
8
9
10
B C D E F G H I J K L M N
YSP-1000
SCHEMATIC DIAGRAM (AMP 2/2)
65
★
All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
★
Components having special characteristics are marked
s
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
2.3
0 0 1.5 1.5 1.5 1.5 1.7 1.7 1.5 0.1
2.3 2.3 2.3 2.3 2.6 2.6 5.2
0 0
2.3
0 0 1.5 1.5 1.5 1.5 1.7 3.2 1.5 1.7
2.3 2.3 2.3 2.3 2.6 5.2 5.2
0
3.3
0
5.1
5.1
0
2.6
0
0
5.0
2.4
2.5
0.5
0 0 0 0 0
0.5
10.4
5.0 5.0 5.0 5.0 5.0 0
0
10.4
10.4
0
0 0 0 0 0
0
2.5
5.0
0
0
5.0
5.2
10.4
0.5
0.5
10.4
10.4
3.3
0
2.5
2.5
5.2
5.2
5.2
5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2 5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.0
5.2
5.2 5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2
5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2
5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2
5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2
5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2
5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2
5.1
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
0
2.5
2.5
5.2
5.2
5.2
5.1
5.1
0
2.5
2.6
2.6
2.3
3.2 0
0
0
0
5.2
0.1
0.1
0.1
0.1
0 0
AMP (1)
DRIVER
(WOOFER)
DRIVER
(TWEETER)
DRIVER
(TWEETER)
DRIVER
(TWEETER)
DRIVER
(TWEETER)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE1
A1
A2
A3
A4
A5
A6
A7
A8
GND
V CC
OE2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
OE1
OE2
To Seven Other Channels
A1
Y1
1
19
2 18
IC703, 704 : SN74AHCT541PWR
OCTAL BUFFERS/DRIVERS
Page 63
to DSP_CB9
L9
Page 67
to INPUT (1)_CB507
J3
IC716 : YDA138
Digital audio power amplifier
IC701, 702, 705, 706, 709, 710, 712~715 : YDA139
Digital audio power amplifier