Yamaha AW2816 Service Manual page 48

AW2816
TC74VHCT245AFT (XT744A00)
TC74VHC245FT (XU797A00)
TC74HC245AF (XS720A00)
MM74HC245ASJX (XW107A00)
Octal 3-State Bus Transceiver
MAIN: IC401, 402, 506, 509-512, 607,
709, 710, 712, 716-718
1
D1R
2
A1
3
A2
4
A3
5
A4
A5 6
A6 7
A7
8
A8
9
GND
10
TC74HC4052AF (XS790A00)
MM74HC4052SJX (XY876A00)
Differential 4-Channel
Multiplexer/Demultiplexer
SUB-FADER: IC107
1
0Y
2Y 2
2Y 2X
Y-COM 3
Y-COM 1X
3Y
4 3Y X-COM
1Y
5
1Y 0X
INH 6
INH 3X
VEE
7 A
VSS
8
TC7WU04F (XN567A00)
Triple lnverter
MAIN: IC422, 609, 610, 723
1A 1
3Y 2
3
2A
4
GND
48
TC74VHCT541AFT (XZ744A00)
74VHCT541AMTCX (X0301A00)
Octal 3-State Buffer
MAIN: IC507, 508, 513
20 Vcc
19
G
18
B1
17
B2
16
B3
15
B4
14
B5
13
B6
12
B7
11 B8
TC74HC4053AFT (XV944A00)
Triple 2-Channel
Multiplexer/Demultiplexer
MAIN: IC601
Switches IN/OUT
16 VDD
Y1
15
2X
- do. - Y0
14 1X
- do. - Z1
13
X-COM Commons OUT/IN
12
0X Swiches IN/OUT
Z0
11
3X
Control Inhibit
10 A
-DC Voltage Supply
B
9
- do -
TC7S04F (XM182A00)
Inverter Gate
MAIN: IC514
NC
8 Vcc
IN
7 1Y
VSS
6
3A
5
2Y
G1
1 20 Vcc
A1 2 G2
19
A2
Y1
3 18
A3
4 Y2
17
A4
5 Y3
16
A5 Y4
6 15
A6 Y5
7
14
A7
Y6
8 13
A8
Y7
9 12
GND Y8
10 11
+DC Voltage Supply
1 Y1 V 16
DD
Commons OUT/IN Y
2 Y0 Y 15
- do. -
3 Z1 X 14
Swiches IN/OUT
4 Z X1 13
Z
- do -
5 Z0 X0
12
Control Input A
6 INH A 11
- do. - B
7 VEE B 10
- do. - C
8 V C 9
SS
1 5 VDD
2
3 4
OUT
SN75179BPSR (XT619A00)
Line Driver
MAIN: IC413
1
Vcc
2
R
D 3
4
GND
Driver Receiver
INPUTS OUTPUTS DIFFERENTIAL INPUT
D Y Z A-B
H H L V
ID
L L H -0.2V < V
ID
V -0.2V
ID
H: "H" Level
L: "L" Level
?: incertitude
DS26C32ATMX (XU815A00)
Quad Differential Line Receiver
MAIN: IC603
INPUT A 1
-
+
INPUT A 2
OUTPUT A
3
ENABLE 4
X
OUTPUT C 5
X1
INPUT C 6
+
X0
-
INPUT C 7
GND 8
NJM2360AM (X0200A00)
DC-DC Converter
SUB-INV: IC501
Cs 1
Q Q S
2
Q
1 R
Es
2
I
pk
C OSC
T
3
C
T
COMP
V
REF
1.25V
4
GND
8
A
7
B
6
Z
5
Y
OUTPUTS
R
0.2V H
< 0.2V ?
L
16 Vcc
15
INPUT B
14 INPUT B
13 OUTPUT B
12
ENABLE
11
OUTPUT D
10 INPUT D
INPUT D
9
8 C
D
7 S
I
6
V+
5
INV
IN