Yamaha SilentPiano U1-Silent Servicehandleiding - Pagina 14
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SILENT SB SERIES
PCM1702U/2K (XP551A00) DAC (Digital to Analog Converter)
PIN
NAME
I/O
No.
1
DATA
I
Data input
2
CLK
I
Clock
3
NC
4
+VDD
Power supply (+5 V)
5
D.GND
Digital ground
6
-VDD
Power supply (-5 V)
7
L.E
I
Latch enable
8
NC
9
NC
10
NC
IC BLOCK DIAGRAM
HA1630Q04T (X2869A00)
Quad Operational Amplifier 4C
KEY SENSOR: OP001,002
A OUTPUT
1
A -INPUT
2
A +INPUT
3
V+
4
B +INPUT
5
B -INPUT
6
B OUTPUT
7
SN74HC132NSR (XW792A00)
Quad 2 Input NAND
1A
1
1B
2
1Y
3
2Y
4
2A
5
2B
6
GND
7
µPC4570G2 (XF291A00)
Quad Operational Amplifier
MN: IC107,108,110,111,114
Output A
1
Inverting
2
Input A
-
+
Non-Inverting
3
+
-
Input A
-DC Voltage Supply
4
-V
14
FUNCTION
MM74HC14SJX (XW104A00)
Hex INVERTER
14
D OUTPUT
13
D -INPUT
12
D +INPUT
11
GND
10
C +INPUT
9
C -INPUT
8
C OUTPUT
GND
HRND12R35 (XT656A00)
DC-DC CONVERTER
MN: IC008
+Vin
14
VDD
L
13
4B
-Vout
NC
12
4A
VADJ
ACL
11
4Y
CL
G
10
3Y
RC
9
3B
NC
8
3A
NC
NC
VREF
+DC Voltage
+V
8
Supply
7
Output B
Inverting
6
Input B
Non-Inverting
5
Input B
PIN
NAME
I/O
No.
11
+VCC
12
BPO
13
NC
14
IOUT
O
15
A.GND
16
A.GND
17
SERV
18
NC
19
REF
20
-VCC
KEY SENSOR: IC006
1A
1
V
14
DD
1Y
2
13
6A
2A
3
12
6Y
2Y
4
11
5A
3A
5
10
5Y
3Y
6
9
4A
7
4Y
8
MN POWER SUPPLY: IC002
MN: IC105, 106
FUNCTION
Power supply (+5 V)
Bipolar de-couple
Output current
Analog ground
Analog ground
Servo de-couple
Reference de-couple
Power supply (-5 V)
LA6517 (XM804A00)
Quad Operational Amplifier
MN: IC112
OUT1
1
8
INPUT - 1
-
VCC
2
7
INPUT + 1
OUT2
3
6
INPUT + 2
-
VEE
4
5
INPUT - 2
MB3763P (XF880A00)
MOTOR DRIVE
MN: IC116
1
A-OUT
A-IN
8
GND
2
7
A-Vcc
GND
3
6
B-Vcc
B-IN
4
5
B-OUT