Yamaha R-1330 Service Manual page 55

Micro component system receiver/speakers
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A
B
C
MAIN 2/4
1
AC65.3
To POWER TRANSFORMER
CB201
2
to MAIN 1/4
3
AC32.2
4
To POWER TRANSFORMER
CB202
5
AC9.2
CB203
6
AC30.5
To POWER TRANSFORMER
AC2.9
7
8
9
10
MAIN (1)
D
E
F
44.3
0
0
-43.7
IC204
5.0
1.0
0
20.6
20.6
13.1
-20.8
13.2
13.1
0
0
0
-20.7
0
0
-12.9
-20.6
-13.0
-20.6
-20.7
IC201
11.3
5.0
5.0
0
38.3
30.2
38.3
30.7
IC203
17.1
16.6
29.5
0
30.7
0
4.6
0
G
H
12.0
to MAIN 1/4
-11.7
to MAIN 1/4
12.0
0
to MAIN 1/4
I
J
K
IC201: NJM2388F05
Low dropout voltage regulator with ON/OFF control
V
IN
Cont
GND
IC203: NJM78M12DL1A (TE1)
Voltage regulator
IC204:
Temperature sensor
★ 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.
L
M
N
R-1330/NS-BP400
V
OUT
Bandgap
Reference
ON/OFF
control
Over Voltage
Thermal
Over Current
Protection
Protection
Protection
INPUT
OUTPUT
GND
LM61CIZ
● 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。
55

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