Yamaha DM2000 Service Manual page 73

AM26LS31CNSR (XU996A00)
JK2: IC501, 601-604
Quad Line Driver
1A 1 16 Vcc
1Y 2
15
4A
1Z
3 14 4Y
ENABLE G 4
13 4Z
2Z 5
12
ENABLE G
2Y 6
11
3Z
2A 7
10 3Y
3A
GND 8
9
INPUT ENABLES OUTPUTS
A G G Y
H H X H
L H X L
H X L H
L X L L
X L H Z
H= high level
L= low level
X= irrelevant
Z= high impedance (off)
TC7SH32FU (TE85L) (XW633A00)
DSP: IC051
Input OR Gate
IN B Vcc
1 5
IN A 2
3 4
OUT Y
GND
TC7S04F (XM182A00)
AD: IC003
DA1: IC900
DA2: IC911
Inverter Gate
NC 1
IN 2
3
VSS
Z
L
H
L
TC7W04FU (XP004A00)
H
Z
PN3: IC510
Triple Inverter
1A
1
3Y
2
2A
3
GND
4
TA7291F (XW618A00)
FD1: IC114-129
FD2: IC111-119
Motor Driver
Vcc Vref
11 5
Protector circuit
(Heat interception)
7 9
IN1 IN2
TC7SH04FU (XS775A00)
CPU: IC122
DSP: IC012, 066
Inverter Gate
5 VDD
4
OUT
Vcc
8
1Y
7
3A
6
2Y
5
15
REG
4
13
1
GND
NC 1 5 VCC
IN A 2
3 4
GND OUT Y
TC7SH08FU (XR680A00)
CPU: IC123, 137
2 Input AND Gate
IN B Vcc
1 5
IN A 2
3 4
GND OUT Y
1
GND 16
Vs
NC 2
15
NC 3
14
OUT1
OUT1
4 13
M
Vref
5 12
OUT2
NC
6 11
IN1
7
10
NC
8 9
DM2000
NC
Vs
NC
OUT2
NC
Vcc
NC
IN2
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