Yamaha YMC-700 Service Manual page 79

A B C
DIGITAL 5/8
1
Q Q
7
3
2
3
to DIGITAL 3/8
to DIGITAL 5/8
4
to DIGITAL 7/8
to DIGITAL 8/8
5
to DIGITAL 8/8
to DIGITAL 5/8
T E
L 1 3 9 4
6
to DIGITAL 5/8
7
8
to DIGITAL 1/8
to DIGITAL 2/8
to DIGITAL 5/8
9
w w w
.
10
D E F
1 5 1
6 3
to DIGITAL 8/8
3.3
0
5.1
0
0
0
0
0
0
3.3
NPGA
3.3
3.3
3.3
0
0
3.3
3.3
2 2 3.3 9 6 5 1 3
IC351
0
0
0
0
0
3.3 No replacement part available.
0
0
0
0
0
0
3.3
3.3
0
3.3
3.3
3.3
x a o
y
i
http://www.xiaoyu163.com G H
YMC-700 YMC-500
5
0 8
to DIGITAL 4/8
0
3.3
0
3.3
3.3
3.3
0
3.3
3.3
3.3
3.3
4.0
0
5.1
3.3
3.3
Q Q
0 3 7 6 3
3.3
3.3
0
3.3
0
3.2
3.3
3.3
3.3
0
0
0
5.0
0
0
0
0
3.3
5.1
5.1
0
0
0 0
3.3 0
0 5.1
0 0
0 0
0 0
0
0
IC352
IC352: SN74AHCT245PWR
Octal bus transceivers with 3-state outputs
1
DIR
2
A1
u 1 6 3
.
To Seven Other Channels
I J K
2 4
9 9
3.3
0
0 3.3
0 3.3
0 3.3
0 0
0 3.3
0 0
0 3.3
0 0
0 3.3
IC353
5.1
0
0 0
0 0
0 4.9
0 5.1
0 5.1
5.1
0
0 5.1
0 0
0
3.3
IC354
to DIGITAL 8/8
to DIGITAL 6/8
to DIGITAL 8/8
to DIGITAL 8/8
to DIGITAL 7/8
to DIGITAL 1/8
to DIGITAL 8/8
1 5 1 5 0 8 9 2
to DIGITAL 3/8
to DIGITAL 8/8
to DIGITAL 3/8, 8/8
to DIGITAL 3/8
to DIGITAL 8/8
3.3
0
0 3.3
0 3.3
0 3.3
0 3.3
0 3.3
0 0
0 3.3
0 0
0 3.3
IC356
to DIGITAL 8/8
IC353, 356: 74LVC574APW
Octal D type flip flop with 5 V tolerant inputs/outputs
positive edge trigger 3-state
OE 1 20 Vcc
D0 2 19 Q0
DIR 1 20 V
19 CC
OE D1 3 18 Q1
A1 2 19 OE m
A2 3 18 B1 D2 4 17 Q2
A3 B2
4 17 D3 5 16 Q3
c A4 5 16 B3 o
D4 6 15 Q4
A5 6 15 B4
D5 7 14 Q5
A6 7 14 B5
18
D6 8 13 Q6
B1 A7 8 13 B6
9 12 D7 9 12 Q7
A8 B7
GND 10 11 CP
GND 10 11 B8
L M N
YMC-700/YMC-500
2
8 9 9
to DIGITAL 6/8
to DIGITAL 3/8
to DIGITAL 7/8
to DIGITAL 6/8
to DIGITAL 8/8
4 9 8 2 9 9
to DIGITAL 2/8
to DIGITAL 1/8
to DIGITAL 7/8
to DIGITAL 6/8
to DIGITAL 3/8
to DIGITAL 8/8
IC354: SN74AHCT574PWR
Octal edge-triggered D-type flip-flops with 3-state outputs
1
OE
OE 1 20 V
CC
11
CLK 1D 2 19 1Q
2D 3 18
2Q
C1 19
4 17
2 1Q 3D 3Q
1D 1D
4D 5 16 4Q
5D 6 15
5Q
6D 7 14 6Q
7D 8 13 7Q
9 12
8D 8Q
C8
12 GND 10 11 CLK
8Q
9
8D
8D
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
79