Yamaha VS-10 Service Manual page 40

A B
VS-10
SCHEMATIC DIAGRAM ( 2/2 DIGITAL )
1
DIGITAL (2)
4.5
2
3
4.8
0
2.5
0.1 0
4.8
4.8
4.8
4.8
4.8
4
0.1
4.8
4.8
4.8
4.8
0
-24.1
5 4.8
page E-42/J-40
A
5
MAIN (1)
6
7
8
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
DTC143EKA 2SC4391 1SS355 NJM2904M
2SC3326 MA8051-M M5220FP
Anode
DTC144EKA MA8062-H S-29390AFJA
2SA1037
C
8
E
B
1
C
9 Cathode
E-45/J-43
B E
C D E
0
0
4.8
0
-23.8
-24.3
-24.8
-24.3
-23.3
-23.3
-23.4
-25.3
-25.5
0 0
2.5
0
4.7
4.0
4.8
1
0
4.8
4.8
4.8
B
DIGITAL (1)
8
page E-44/J-42
HD74HC02FPEL YM3436DK YSS918D-F IS61C1024-20J
80 51
CS4227-KQ M3021BFCFP
81
50
33 23
34 22
4 7
14
44 12 100 31 32
1
1 11 1 30
F G
-19.6
-20.3
-20.3
-20.3
-20.3
-19.6
-20.5
-25.5
-24.9
-24.9
-24.9
-24.9
-24.9
-24.9
-24.9
-24.9
-24.9
-24.9
-24.9
-25.0
0 0 0
0
0
4.8
0
0
4.8
0
0 0
0 0
0
4.8
0
A
MAIN (1)
6
page E-42/J-40
Point 1
Pin 13 of IC600
uPC29M33T-E1
16
3: IN
1: OUT
1 2: COM
H I
DIGITAL (3)
page E-42/J-40
A
1
MAIN (1)
0.1
0
5.0
2 B
2 A 9.9
10.2
9.3
4.8
0 6.2
6.8
6.2
0
0
0
0
Point 2
A : Collector of Q608, B : Emitter of Q609
B
A
J K L
IC601 : S-29390AFJA
CMOS 4kbit Serial EEPROM
Memory array Address decoder
6
Data register Output buffer DO
DI 5
8 TEST
Mode decode logic
CS 3
1 NC
2 Vcc
4
SK Clock generator 7 GND