Yamaha DSP-AX457, Руководство по обслуживанию

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B C D E F G H I J K L M N
87
RX-V557/HTR-5850/DSP-AX557/RX-V457/HTR-5840/DSP-AX457
SCHEMATIC DIAGRAM (POWER)
★ All voltages are measured with a 10M Ω /V DC electronic volt meter.
★
Components having special characteristics are marked s 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。
★
s 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。
IC301: LM61CIZ
Temperature Sensor
Vout
+Vs
GND
IC302: NJM7812FA
IC304: NJM7805FA
Voltage Regulator
INPUT
OUTPUT
COMMON
IC303: NJM79M12FA
IC305: NJM79M05FA
Voltage Regulator
COMMON
OUTPUT
INPUT
IC306: NJM2388F
LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL
GND
Cont
Vin Vout 2 1
4
3
Thermal
Protection
Bandgrap
Reference
ON/OFF
control
Over Voltage
Protection
Over Current
Protection
+
-
FRONT L
CENTER
SURROUND L
52.7
52.7
53.8
53.3
0
0
0
-0.6
-0.6
1.0
52.7
52.7
53.8
53.3
0
0
0
-0.6
-0.6
1.0
1.0
5.0
5.0
0
12.0 10.3
10.3
19.0
10.3
-0.1
-0.1
-20.1
-11.9
-12.0 -20.1
18.9
0
0 0
3.3
-0.2
0.2
0
1.0
5.0
5.0
0
12.0 10.3
10.3
19.0
10.3
-0.1
-0.1
-20.1
-11.9
AC30.4
AC18.5
-12.0 -20.1
18.9
0
0 0
3.3
-0.2
0.2
0
52.7
52.7
53.8
53.3
0
0
-0.6 -0.6
1.0
52.7
52.7
53.8
53.3
0
0
-0.6 -0.6
1.0
52.7
52.7
53.8
53.3
0
0
-0.6 -0.6
1.0
52.7
52.7
53.8
53.3
0
0
-0.6 -0.6
1.0
AC30.4
AC18.5
to POWER TRANSFORMER
to POWER TRANSFORMER
to MAIN (1)
Page 86 E6
to MAIN (1)
Page 86 E6
to CONVERSION
Page 91 G8
to MAIN (1)
Page 86 A1
to MAIN (1)
Page 86 A4
to MAIN (1)
Page 86 A4
to FUNCTION
P
age 83
J4
to FUNCTION
P
age 83
J4
to FUNCTION
P
age 83
J5
POWER (1) POWER (2)
RX-557/HTR-5850/DSP-AX557 models
2200
RX-457/HTR-5840/DSP-AX457 models