Ic Block Diagram - Yamaha PORTATONE PSR-9000 Service Manual

PSR-9000

IC BLOCK DIAGRAM

RC4558D-V (IG001390)
Dual Operational Amplifier
MK: IC1
Output A 1
Inverting
2
Input A
- +
Non-Inverting
3
+ -
Input A
-DC Voltage Supply 4 -V
LA6517 (XM804A00)
Operational Amplifier
AM: IC4
OUT1 1
-
2
VCC
3
OUT2
-
VEE 4
M5227P (XF751A00)
EQUALIZER
AMP: IC2,3
47k
1
IN1
2
NF1
540
47k
3
IN2
4
NF2
540
+ -
540 47k
5
IN3
6
NF3
540 47k
47k
7
IN4
+ -
8
NF4
540 47k
24
SN74HCU04N (IG142250)
SN74VHCU04F (XM332A00)
TC74HCU04AF-TP1 (XD660A00)
INVERTER
AJACK/DJACK: IC4
TG:
+DC Voltage
+V 8
Supply
DP:
7 Output B
DM:
Inverting
6
Input B
Non-Inverting
5
Input B
µPC4570C (XC520A00)
µPC4570G2 (XF291A00)
Operational Amplifier
TG: IC14
MV: IC101,102
8 INPUT - 1 Output A
Inverting
7 INPUT + 1
Input A
Non-Inverting
6 INPUT + 2
Input A
5 INPUT - 2 -DC Voltage Supply
HD74LVC139FPEL (XS048A00)
DEMULTIPLEXER
DM: IC25
16
-Vcc
10k
15
GND
10k
14
+Vcc
13
OUT
12
-IN
11
+IN
540
10
NF5
9
IN5
IC3
IC2,9
IC4
1
14
1A
VDD
2
13
1Y 6A
3
12
2A
6Y
4
11
2Y
5A
5
10
3A
5Y
6 9
3Y
4A
7
8
Vss
4Y
+DC Voltage
1 +V 8
Supply
2 7 Output B
- +
Inverting
3 6
+ - Input B
Non-Inverting
4 -V 5
Input B
1
16
1G Vcc
G
2 G
15
1A A 2G
A
3
14
1B B 2A
4 B
13
1Y0 Y0 2B
5 Y0
12
1Y1 Y1 2Y0
Y1
6
11
1Y2 Y2 2Y1
7 Y2
10
1Y3 Y3 2Y2
Y3
8 9
GND 2Y3
µPC4570HA (XB247A00)
Operational Amplifier
AM: IC1,2,3,5,6,7
A B
- -
1 2 3 4 5 6 7 8
+V -IN -V -IN +V
OUT +IN +IN OUT
A A A B B B
LB1443N (XF483A00)
LEVEL METER DRIVER
TG: IC13
+ + + + +
- - - - -
-
amp
+
1 2 3 4 5 6 7
VC1 VC3 GND Amp Out
VC2 VC4 VC5
TC74VHC08F (XT014A00)
AND
DM: IC5
TG: IC24,27
1A 1 14 VDD
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
2Y 6 9 3A
7 VSS 8 3Y
9
8 9
VCC
In