Yamaha DTXPRESS, Service Manual

Page: 11 / 47

DTXPRESS
11
DTXPRESS
1 1A
2
3
4
5
6
7
1Y
2A
2Y
3A
3Y
GND 8
9
10
11
12
13
14 V
DD
6A
6Y
5A
5Y
4A
4Y
SN74HC14NSR ( XC725A00 )
Inverter
AUX IC201,202
1 1A
2
3
4
5
6
7
1B
1Y
2A
2B
2Y
GND 8
9
10
11
12
13
14 V
CC
4B
4A
4Y
3B
3A
3Y
TC74HC32F-T1 ( XD599A00 )
OR
DM IC14
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
SN74HC245NSR ( XD838A00 )
Buffer
DM IC11
1
2
3
4 -V
8
7
6
5
Output A +V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A
+ -
+ -
µ
PC4570G2 (XF291A00)
Dual Operational Amplifier
DM IC106,109,110, AUX IC501
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
SC7SU04FEL (XI348A00)
Hex Inverter
DM IC9,105
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
OUTPUT
CONTROL
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
Vcc
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
Q
D CK
OE
SN74HC374ANSR (XQ042A00)
Octal 3-state D-Type Flip-Flop
DM IC12
IC BLOCK DIAGRAM
MB3790PF (XR967A00)
ASSP
DM IC8
2
3
4
5
6
7
8
9
10
11
12
16
14
13
C
T
V
BAT2
V
BAT1
ALARM2
RESET
RESET
ALARM1
V
OUT
V
OUT
V IN
V
IN
V
SENSE
CONTROL
GND
+
590k
240k
1.24V
Reference
Voltage
Power Supply
Circuit
S Q
R
100
SBD
2.65V
2.37V
500
V
IN
V
IN
V
OUT
V
OUT
3
µ
A
V th:3V
V th:1.5V
R
CN
0.5
-
+
-
+
-
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 B +INPUT
A +INPUT
A -INPUT
D +INPUT
C -INPUT
B OUTPUT
NJM2902M-T1 ( XR562A00 )
Quad Operational Amplifier
AUX IC203 to 207
+ - + -
+- + -
NJM4556AMT1 (XQ138A00)
Dual Operational Amplifier
DM IC108
SN75C1168NSR (XU073A00)
Line Driver
DM IC10
TC74HC4052AF (XS790A00)
Multiplexer
AUX IC208,209
1
2
3
4 -V
8
7
6
5
Output A +V
Non-Inverting
Input A
-DC Voltage Supply
+DC Voltage
Supply
Output B
Inverting
Input B
Non-Inverting
Input B
Inverting
Input A + -
+ -
1
2
3
4
5
6
7
1B
1A
1R
1DE
2R
2A
2B
16
15
14
13
12
11
V
CC
1D
1Y
1Z
2DE
2Z
2Y
8
GND 9
10
2D
1
2
3
4
5
6
7
15
14
13
12
11
10
16 0Y
2Y
Y-COM
3Y
1Y
INH
VEE
VDD
2X
1X
X-COM
0X
3X
B
A
8 9 VSS
2Y
0Y
Y-COM
3Y
1Y
INH
B
2X
1X
X-COM
0X
3X
A
PIN
No.
NAME I/O FUNCTION
PIN
No.
NAME I/O FUNCTION
1
2
3
4
5
6
7
8 4/8FS
D. GND
16/8 BIT
D. VDD
A. GND
R. OUT
A. VDD
A. VDD
I
I
O
4/8 Fs selection
Digital ground
16 bit/8 bit selection
Digital power supply
Analog ground
Channel R output
Analog power supply
9
10
11
12
13
14
15
16
R. REF
L. REF
L. OUT
A. GND
LRCX/WD
LR/RSI
SI/LSI
CLK
O
I
I
I
I
Channel R voltage reference
Channel L voltage reference
Channel L output
Analog ground
Left/right check, Word clock
Left/right selection, Channel R series input
Series input/Channel L series input
Clock
µ
PD63200GS-E1 (XP867A00) DAC (Digital to Analog Converter)
DM IC007