Yamaha EZ-EG Servicehandleiding - Pagina 11
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IC BLOCK DIAGRAM
74HCU04DT (XZ110A00)
Hex Inverter
DM: IC607
1A
1
14
2
13
1Y
3
12
2A
4
2Y
11
5
10
3A
6
9
3Y
7
Vss
8
TC74HC4053AFT (XV944A00)
Multiplexer/Demultiplexer
DM: IC701
Switches IN/OUT
Y1
1
Y1
V
16
DD
– do. –
Y0
2
Y0
Y
15
– do. –
Z1
3
Z1
X
14
Commons OUT/IN
4
Z
X1
13
Z
Swiches IN/OUT
5
Z0
X0
12
Z0
Control Inhibit
6
INH
A
11
– DC Voltage Supply
7
VEE
B
10
– do. –
8
V
C
9
SS
M5291FP-600C (XR858A00)
DC-DC Converter
DM: IC504
Switch-Collector
1
Q
Switch-Emitter
2
Capacitor
3
1.17V
reference
voltage
Ground
4
HD74LVC08FP (XU720A00)
Quad 2 Input AND
DM: IC306
1A
VDD
1B
6A
1Y
6Y
2A
5A
2B
5Y
2Y
4A
VSS
4Y
µPC4572G2-T1 (XF634A00)
NJM2904V(TE1) (XR532A00)
Dual Operational Amplifier
DM: IC502, 601-606
+DC Voltage Supply
Output A
Inverting
Commons OUT/IN Y
Input A
Non-Inverting
– do. –
X
Input A
Ground
Swiches IN/OUT
X1
– do. –
X0
Control Input A
– do. –
B
– do. –
C
Driver
8
S
R
7
Peak current detect
Generator
Comparator
6
Power supply
+
Input
5
1
14
VDD
2
13
4B
4A
3
12
4Y
4
11
3B
5
10
3A
6
9
7
8
3Y
+DC Voltage
+V
1
8
Supply
Output B
2
7
-
+
Inverting
3
6
+
-
Input B
Non-Inverting
-V
4
5
Input B
MM74HC14SJX (XW104A00)
Hex Inverter
DM: IC702
1A
VDD
1
1
1Y
6A
2
2
2A
6Y
3
3
2Y
4
4
5A
3A
5
5
5Y
3Y
4A
6
6
GND
4Y
7
7
µPD6379AGR (XR998A00)
D/A Converter
DM: IC501
Rch analog
Power supply
1
R
V
8
OUT
DD
Output
Voltage
Shift clock
REF
C
2
7
LK
reference
Ground
Serial dat input
3
GND
SI
6
Lch analog
L/R clock
4
L
LR
5
OUT
CK
output
EZ-EG
11