Yamaha Digital Sound Projector YSP-900, Service Manual

Page: 58 / 82

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-900
58
★
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.
AMP
2.2
0 1.5 1.5 1.5 1.5 1.7 1.7 1.7 3.2 0
2.2
0
2.4
2.5
2.5
2.2
2.5
3.2
5.0
2.5
0
0
0
0
5.1 5.1
5.1
5.0
0.2 0.2
0.2 0.2
0
0
2.4
5.0
2.5
2.5
2.2
2.5
3.2
0
0
0
0
2.5
5.1
0.2
0.2
0
5.1
5.1
5.0
0.2
0.2
0
0
2.4
5.0
2.5
2.5
2.2
2.5
3.2
0
0
0
0
2.5
5.1
0.2
0.2
0
5.1
5.1
5.0
0.2
0.2
0
0
2.4
5.0
2.5
2.5
2.2
2.5
3.2
0
0
0
0
2.5
5.1
0.2
0.2
0
5.1
5.1
5.0
0.2
0.2
0
0 0
2.4
5.0
2.5
2.5
2.2
2.5
3.2
0
0
0
0
2.5
5.1
0.2
0.2
0
5.1
5.1
5.0
0.2
0.2
0
2.4
5.0
2.5
2.5
2.2
2.5
3.2
0
0
0
0
2.5
5.1
0.2
0.2
0
5.1
5.1
5.0
0.2
0.2
0
2.4
5.0
2.5
2.5
2.2
2.5
3.2
0
0
0
0
0
2.5
5.1
0.2
0.2
0
5.1
5.1
5.0
0.2
0.2
0
0
0
2.4
2.5
2.5
2.2
2.5
3.2
5.0
2.5
0
0
0
0
5.1 5.1
5.1
5.0
0.2 0.2
0.2 0.2
0 0
0
2.4
2.5
2.5
2.2
2.5
3.2
5.0
2.5
0
0
0
0
5.1 5.1
5.1
5.0
0.2 0.2
0.2 0.2
0 0
0
2.4
2.5
2.5
2.2
2.5
3.2
5.0
2.5
0
0
0
0
5.1 5.1
5.1
5.0
0.2 0.2
0.2 0.2
0 0
0
2.4
2.5
2.5
2.2
2.5
3.2
5.0
2.5
0
0
0
0
5.1 5.1
5.1
5.0
0
5.0
0.2 0.2
0.2 0.2
0 0
2.2 2.2 2.2 2.2 2.5 2.5 5.0 0 2.2
0 1.5 1.5 1.5 1.5 1.7 1.7 3.2 3.2
05
.0
10.1
10.1
10.1 5.0 5.0 5.0 5.0 5.0 0 0.5
2.4
2.5
0 0
0 0 0
0
0 0 0 0
0 0 0 0
10.1
0.5
10.1
0.5
3.3
0
0
5.0
2.5
2.5
0
5.0
10.1
10.1
10.1
0.5
5.0 5.0 5.0 5.0 5.0 0
2.4 2.5
0 0
0 0 0
0
0 0 0 0
0 0 0 0
10.1
0.5
10.1
0.5
3.3
10.1
0
0
5.0
2.5
2.5
0
2.2 2.2 2.2 2.2 2.5 2.5 2.5 5.0
3.3
5.0 5.0
5.0 5.0
0
0
AMP
No replacement part available.
サービス部品供給なし
No replacement part available.
サービス部品供給なし
DRIVER x 21
(TWEETER)
DRIVER
(WOOFER_R)
DRIVER
(WOOFER_L)
TW19 TW20 TW21 TW16 TW17 TW18 TW13 TW14 TW15 TW10 TW11 TW12 TW7 TW8 TW9 TW4 TW5 TW6 TW1 TW2 TW3
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
IC711, 716 : YDA138
Digital audio power amplifier
IC701, 702, 705, 706, 709, 710, 712-715, 717 : YDA139
Digital audio power amplifier
Page 57
to DSP_CB11
J7
Page 60
to INPUT(1)_CB504
J3