Ic Block Diagram - Yamaha MG12/4 Service Manual

MG12/4
MG16/4

IC BLOCK DIAGRAM

NJM2068M-D(TE2) (X3505A00)
Dual Operational Amplifier
MG12/4 MAIN, MG16/4 MAIN:
IC702, 703, 902-904, ICA02-04,
ICB01-03, ICC01-03, ICD01-03,
ICE01, 03, ICF01, ICG01-05
IC102, 103, 302, 303
MG16/4 MAIN:
Output A
1 +V
Inverting
2
Input A - +
Non-Inverting
3
+ -
Input A
-DC Voltage Supply
4 -V
NJM4580ED (XT157A00)
Dual Operational Amplifier
MG12/4 MAIN, MG16/4 MAIN:
IC701, 801, 901, ICA01, ICE02,
ICF02, ICG06, 07
IC101, 201, 301, 401
MG16/4 MAIN:
Output A
1 +V
Inverting
2
Input A - +
Non-Inverting
3
+ -
Input A
-DC Voltage Supply
4 -V
26
（IC ブロック図）
NJM4556AL (XP844A00)
Dual Operational Amplifier
IC502, 503,
MG12/4 MAIN, MG16/4 MAIN:
A
1
+DC Voltage
8
Supply OUT
A
Output B
7
Inverting
6
Input B
Non-Inverting
5
Input B
IC501, 601,
+DC Voltage
8
Supply
Output B
7
Inverting
6
Input B
Non-Inverting
5
Input B
ICH03
B
- -
2 3 4 5 6 7 8
-IN +IN -V +IN -IN OUT +V
A A B B B
LB1412M (X5838A00)
LED Driver
MG12/4 MAIN, MG16/4 MAIN:
VZ RESET OSC ILED
13 12 14
OSC
-
+
OUT2
11
-
+
-
+ -
+
IN2
10
-
+
OUT1
9
-
+
- +
IN1
8
-
+
-
+
R
-
S Q
+
R Q
-
S Q
+
R
Q
VCC
16 -
S Q
+
R
Q
-
S Q
+
R
Q
-
S Q
+
7
GND
ICH01, 02
15
CURENT
DRIVER
D1
17
D2
18
D3
19
D4
20
CURENT
DRIVER
D5
21
D6
22
23 D7
D8
2
D9
3
D10
4
D11
5
D12
6