Ic Block Diagram（Ic ブロック図 - Yamaha PSR-E413 Service Manual

PSR-E413
IC BLOCK DIAGRAM（IC ブロック図）
SN74LV32APWR (X5647A00)
DMLCD: IC207
Quad 2 Input OR
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
GND
7
BA5417 (XV771A00)
PNL: IC202
POWER AMP
T . S . D
ST. BY
BS BS
1 2 3 4 5 6 7 8
22
SN74LV138APWR (X7284A00)
DMLCD: IC401, 402
3 to 8 Demultiplexer
Vcc
14
4B
13
Select
4A
12
4Y
11
G2A
Enable
3B
10 G2B
3A
9
G1
Output
3Y Y7
8
GND
FILTER
9 10 11 12 13 14 15
A 1 16 Vcc
A
2
B Y0 15
B YO
3 14
C C Y1 Y1
4
G2A Y2 13 Y2
Output
5
G2B Y3 12 Y3
6 11
G1 Y4
Y4
7
Y7 Y5 10 Y5
Y6
8 9
Y6
BA4510F-E2 (X7300A00)
DMLCD: IC502
Dual Operational Amplifier
Output 1 VCC
1 +V 8
-Input 1 Output 2
2 7
- +
+Input 1 -Input 2
3 6
+ -
VEE +Input 2
4 -V 5