Yamaha R-1330 - Main Schematic Diagram (2;4)

★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
⚠
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
●電圧は、内部抵抗 10MΩの電圧計で測定したものです。
●⚠印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
●本回路図は標準回路図です。改良のため予告なく変更することがございます。
A
1
2
3
4
5
6
7
8
9
10
BCDEFGH I JK
L MN
55
MAIN 2/4
R-1330/NS-BP400
CB201
CB202
CB203
IC201
IC204
IC203
0
5.0
-43.7
0
0
1.0
29.5
0
12.0
44.3
0
-20.7
0
-20.8
5.0
0
5.0
11.3
17.1
30.7
30.7
0
4.6
0
38.3
0
16.6
30.2
38.3
0
-20.6
-20.7
-11.7
-13.0
-12.9
12.0
13.1
20.6
0
0
20.6
13.1
-20.6
0
5.0
1.5
11.3
13.2
AC65.3
AC32.2
AC9.2
AC30.5
AC2.9
IC204: LM61CIZ
Temperature sensor
IC201: NJM2388F05
Low dropout voltage regulator with ON/OFF control
ON/OFF
control
Over Voltage
Protection
Bandgap
Reference
V
IN
Cont
GND
V
OUT
Over Current
Protection
Thermal
Protection
IC203: NJM78M12DL1A (TE1)
Voltage regulator
INPUT
OUTPUT
GND
to MAIN 1/4
to MAIN 1/4
to MAIN 1/4
to MAIN 1/4
MAIN (1)
To POWER TRANSFORMER
To POWER TRANSFORMER
To POWER TRANSFORMER