Circuit Boards - Yamaha P-120 Service Manual

SN75C1168NST-E
(XU073A00)
Line Driver / Receiver
DJACK: IC002
1
16
1B
2 15
1A
3
14
1R
4
13
1DE
5
12
2R
6 11
2A
7
10
2B
8 9
GND
AMP: IC001
I CIRCUIT BOARDS（シート基板図）
CONTENTS（目次）
G DM Circuit Board (X0566B0) ........................................................................................ 18
G AMP Circuit Board (X0519B0) ...................................................................................... 20
G AJACK Circuit Board (X0599A0) .................................................................................. 21
G DJACK Circuit Board (X0599A0) .................................................................................. 23
G SW Circuit Board (X0599A0) ........................................................................................ 23
G PNR Circuit Board (X0520C0) ...................................................................................... 24
G PNL Circuit Board (X0520C0) ....................................................................................... 25
Vcc
1D
1Y
1Z
2DE
2Z
2Y
2D
PC4570G2
(XF291A00)
Dual Operational Amplifier
DM: IC013, 022
AJACK: IC101, 102
+DC Voltage
Output A 1 +V 8
Supply
Inverting
2 7 Output B
Input A
- +
Inverting
Non-Inverting
3 6
+ - Input B
Input A
Non-Inverting
-DC Voltage Supply 4 -V 5
Input B
M5227P
(XF751A00)
5-Band Graphic Equalizer
AMP: IC 002, 003
47k
1
16
IN1 -Vcc
10k
2 15
NF1 GND
540
10k
47k
3
14
IN2 +Vcc
4
13
NF2 OUT
540
+ -
540 47k
5
12
IN3 -IN
6
11
NF3 +IN
540 47k
47k 540
7 10
IN4 NF5
+ -
8
9
NF4 IN5
540 47k
P-120/P-120S
17