Yamaha NHB32-C Service Manual page 18

NHB32-C
QQ
3 7 63 1515 0
M51953AFP (XW422A00)
AES: IC315-318, IC417-420, IC718-721, IC817-820
RESET
N.C. 1 8
N.C.
N.C. 2 7 Power supply
N.C. 3 6 Output
GND 4 5 Outside delay capacity
TC74VHC74FT (XV892A00)
AES: IC212-219, IC610-613
MAIN: IC212
D-FF
1
1CLR
2
D
1D
TE
L 13942296513
D
3
CK
1CK
4
PR
1PR CK
5 Q
1Q
PR
6
Q
Q
1Q
7
GND Q
INPUTS
PR CLR CLK D
L H X X
H L X X
L L X X
H H f H
H H f L
H H L X
TC74HC251AF (XQ968A00)
AES: IC225, IC226
MAIN: IC501
LINE DRIVER
3 1 16
D2 D3 D4
2 2
15
DATE
INPUTS
1 3
D1 D5 14
0 4
D0 D6 13
Y 5 Y D7 12
OUTPUTS
W 6
W A 11
STROBE S C B
7 10
www
GND 8
.
18
http://www.xiaoyu163.com
Power supply
7
5 A
R1
+
R2
1.25V
4
GND Outside delay capacity
SN75121NSR
MAIN: IC312
LINE DRIVER
14
VCC
13
2CLR
1A 1
12
2D
1B 2
11
2CK
1C 3
10
2PR
1D 4
9
2Q
1E 5
8
2Q
1F 6
OUTPUTS
1Y 7
Q Q
GND 8
H L
L H
H H
H L
L H
Q Q
O O
TC74VHC04FT (X0195A00)
AES: IC222, IC319, IC320, IC415, IC416, IC716,
IC717, IC815, IC816
INVERTER
Vcc
1A
4
1Y
5
DATA
2A
INPUTS
6
2Y
7
3A
A
3Y
DATA
B
SELECT
Vss
C
9
x ao
y
i
http://www.xiaoyu163.com
8
AES: IC215, IC223, IC224, IC609, IC616, IC617
D-FF
5 A
6 Output
5
(XU816A00) SN75124NSR
MAIN: IC311
LINE DRIVER
Q Q
16 Vcc
3 6 7 1 3
15 2F
14 2E
13 2D
12 2C
11 2B
10 2A
9 2Y
TC7SH04FU (XS775A00)
MAIN: IC211,IC315
INVERTER
1 14
VDD
2
13
6A
3
12
6Y
4
11
5A
5
10
5Y
6 9
4A
7 8
4Y
u163
.
2 9 9 4 2 8
(XV930A00)
1 5 1A 0 5 1 8 2 9 16 Vcc 9 4
1B 2 15 1S
2R 3 14 1R
2S 4 13 1Y
2A 5 12 3A
2B 6 11 3S
2Y 7 10 3R
GND 8 9
3Y
NC V
1 5
CC
IN A 2
GND 3 4 OUT Y
m
co
9 9
2 8 9 9