Yamaha DM 1000, Service Manual

Page: 61 / 307

61
DM1000/MB1000/SP1000
SN75C1168NSR (XU073A00)
JK1: IC203
JK2: IC701
Line Driver/Receiver
DS26C32ATMX (XU815A00)
JK1: IC001
Quad Differential Line Receiver
MC26LS30DR2 (XL334A00)
JK1: IC002
Line Driver
1
2
3
4
5
6
7
Vcc
Input A
Input B/
Enable AB
GND
Input C/
Enable CD
Input D
V
EE
Mode
16
15
14
13
12
11
SR-A
Output A
Output B
SR-B
SR-C
Output C
Output D
8
9
10
SR-D
Input A
Enable AB
SR-A
Out A
2
3
15
14
Input A
2
16
15
Input B
SR-B
Out B
Out A
Out B
3
13
14
Input C
SR-C
Out C
6
12
11
Input D
SR-D
Out D
7
9
10
SINGLE-ENDED MODE
EIA-423
DIFFERENTIAL MODE
EIA-422
Enable CD
7
11
10
Input D
6
Out C
Out D
Vcc 1 Gnd 5
Mode 4 V
EE
8
Inputs Outputs
Operation Vcc Mode A B C D
X X X X
A B C D
Z Z Z Z
V
EE
0
0
0
0
0
0
1
1
1
1
1
0
1
X
1
0
1
0
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
0
1
1
0
1
X
0
0
0
0
1
0
0
0
0
0
1
0
0
0
1
0
0
1
Z
1
0
1
0
1
0
0
0
1
0
Z
0
1
0
0
0
1
0
0
0
1
1
0
1
Z
0
0
0
0
1
1
0
0
1
0
Z
0
0
0
1
0
+5.0 GND
+5.0 -5.0
Differential
(EIA-422-A)
Single-Ended
(EIA-423-A)
X = Don't Care
Z = High Impedance (Off)
X 0 X X
TC7S04F (XM182A00)
ADA: IC954
HAAD: IC951
Inverter Gate
1
2
3
4
5
6
7
1B
1A
1R
1DE
2R
2A
2B
16
15
14
13
12
11
10
Vcc
1D
1Y
1Z
2DE
2Z
2Y
8
GND 9 2D
1
2
3
4
5
6
7
INPUT A
INPUT A
OUTPUT A
OUTPUT C
INPUT C
INPUT C
GND
ENABLE
16
15
14
13
12
11
Vcc
INPUT B
INPUT B
OUTPUT B
ENABLE
OUTPUT D
INPUT D
8
9
10
INPUT D
+
-
-
+
+
-
-
+
1
2
3
5
4
NC
VSS
VDD
OUT
IN
TC7SH04FU (XS775A00)
JK1: IC255, 256
MAIN: IC025, 101, 139, 145, 603
Inverter Gate
TC7SH08FU (XR680A00)
MAIN: IC024
2 Input AND Gate
TC7SH32FU (TE85L) (XW633A00)
MAIN: IC023, 026
TC7SET32FU (XW814A00)
MAIN: IC146
Input OR Gate
1
2
3
5
4
NC
GND
VCC
OUT Y
IN A
1 5
2
3 4
IN B
GND
Vcc
OUT Y
IN A
1 5
2
3 4
IN B
GND
Vcc
OUT Y
IN A