Yamaha DTXT2S, Service Manual

Page: 16 / 95

DTXTREME IIS
16
74HC164DT (XZ112A00)
SHIFT REGISTER
DM: IC118
NJM2901M-T1 (XK910A00)
COMPARATOR
JK: IC602, 605, 607, 609, 611, 615, 616
NJU7662M (XW643A00)
DC-DC Converter
DM: IC020
74HC153DT (X2175A00)
Dual 4 to 1 Data Selectors
JK: IC624-627
1
2
3
4
5
6
7
15
14
13
12
11
10
16 1G SELECT
STROBE B
2Y
OUTPUT
1C1
B B
B
A
A
B
A
A
1C0
1Y
1C2
1C3
1G
2G
2C3
2C2
2C1
2C0
2Y
INPUTS
DATA
INPUTS
DATA
Vcc
SELECT 2G
STROBE A
8 9 GND
1 B OUTPUT
2
3
4
5
6
7
A OUTPUT
V +
A - INPUT
A + INPUT
B - INPUT
8
9
10
11
12
13
14
C OUTPUT
D OUTPUT
GND
D + INPUT
D - INPUT
C + INPUT
C - INPUT B + INPUT
+ - + -
+ - + -
1
2
3
A
QA QA
4 QB QB
5 QC QC
6 QD QD
7 GND
B B
14
13
12
VCC
QG QG
11 QF QF
10 QE QE
9 CLEAR CLEAR
8 CLOCK
QH
CK
QH
OUTPUTS
OUTPUTS
SIRIAL
INPUT
A
A
1
2
3
4
8
7
6
5
TEST
GND
C-
V+
OSC
VR
V out
C+
1
2
3
4
5
6
7
8 13
14
15
16
17
18
19
20
9
10 11
12
VDD (Vcc)
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1 (GND) Vss
2Y1
1A4
2Y2
1A3
2Y3
1A2
2Y4
1A1
1G
74AHC244DT (XZ439A00)
Octal 3-State Bus Buffer
DM: IC212
74AHCT245DT (X2172A00)
74HC245DT (XZ438A00)
Octal 3-State Bus Transceiver
DM: IC010, 202, 203, 211
PN: IC706
1 D1R
2
3
4
5
6
7
8
9
10
A1
A2
A3
A4
A5
A6
A7
A8
GND 11
12
13
14
15
16
17
18
19
20 V
CC
G
B1
B2
B3
B4
B5
B6
B7
B8
74AHC14DT (X2170A00)
Hex Inverter
DM: IC007, 016, 209, 210
JK: IC623
1
2
3
4
5
6
7
13
12
11
10
9
8
14 1A
1Y
2A
2Y
3A
3Y
GND
VDD
6A
6Y
5A
5Y
4A
4Y
UPC4574G2 (XE518A00)
Quad Operational Amplifier
DM: IC224
JK: IC812-816
NJM2902M-T1 (XR562A00)
Quad Operational Amplifier
JK: IC404-411, 601, 604, 606, 608, 610
1
2
3
4
5
6
7
Output 1
Inverting
Input 1
Non-inverting
Input 1
+DC Voltage Supply
B +INPUT
+DC Voltage Supply
Non-inverting
Input 2
Inverting
Input 2
Output 2
14
13
12
11
10
9
8
Output 4
Inverting
Input 4
Non-inverting
Input 4
Ground
Non-inverting
Input 3
Inverting
Input 3
Output 3
+ -
+V
+ -
+ -
+ -
GND
D OUTPUT
D -INPUT
C OUTPUT
B -INPUT
A OUTPUT 1
2
3
4
5
6
7 8
9
10
11
12
13
14
C +INPUT
A +INPUT
A -INPUT
D +INPUT
Ground
+V GND
C -INPUT
B OUTPUT
+ -
+ -
+- + -