A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
RX-V550/HTR-5750/RX-V450/HTR-5740/DSP-AX450
SCHEMATIC DIAGRAM (POWER)
83
★
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
Voltage Regulator
INPUT
OUTPUT
COMMON
IC303: NJM79M12FA
IC305: NJM79M05FA
Voltage Regulator
COMMON
OUTPUT
INPUT
IC304, 306: NJM7805FA
Voltage Regulator
INPUT
OUTPUT
COMMON
FRONT L
CENTER
SURROUND L
53.5
53.5
53.5
53.5
53.5
53.5
53.5
53.5
54.6
54.6
54.6
54.6
54.0
54.0
54.0
54.0
0
0
0
0
0
0
0
0
0
0
-0.6
-0.6
-0.6
-0.6
-0.6
-0.6
-0.6
-0.6
1.1
1.0
5.0
5.0
4.9
11.8
11.2
11.2
19.1
11.2
-0.1
-0.1
-20.0
-11.9
AC30.4
AC18.3
-11.7
-11.9
-20.0
-4.9
19.1
0
0
0
0
0
0
0
0
1.1
1.1
1.1
53.5
53.5
54.6
54.0
0
0
-0.6
-0.6
1.1
53.5
53.5
54.6
54.0
0
0
-0.6
-0.6
1.1
POWER AMP.
HTR-5750, RX-V450, HTR-5740,
DSP-AX450:
P
age 78
to FUNCTION (1)
L5
Page 82
to MAIN (1)
to Power
Transformer
F7
Page 84
to SUBTRANS
G2
Page 82
to MAIN (1)
A5
Page 82
to MAIN (1)
A5
Page 82
to MAIN (1)
A1
to Power Transformer
RX-V550:
P
age 76
L5
HTR-5750, RX-V450, HTR-5740,
DSP-AX450:
P
age 78
to FUNCTION (1)
L6
RX-V550:
P
age 76
L6
[R, L models only]
RX-550/HTR-5750
U, C, T, K
R
L
A, B, G, E
(WC83940)
(WC83950)
(WD07280)
(WC83960)
s1
SW291
X
WB49370
WD07370
X
s2
CB291
X
V937780
V937780
X
s3
CB292
X
V937790
V937790
X
s4
CB293, 294
X
WC05070
WC05070
X
s5
W291
X
V941190
V941190
X
s6
F3
X
T4AL250V
T4AL250V
X
KB00079
KB00079
s7
C360
6800/25
6800/25
6800/25
6800/25
RX-V450/HTR-5740/DSP-AX450
J, U, C, T, K
R
L
A, B, G, E
(WC83970)
(WC83980)
(WD07290)
(WC83990)
s1
SW291
X
WB49370
WD07370
X
s2
CB291
X
V937780
V937780
X
s3
CB292
X
V937790
V937790
X
s4
CB293, 294
X
VP20650
VP20650
X
s5
W291
X
V941190
V941190
X
s6
F3
X
T4AL250V
T4AL250V
X
KB00079
KB00079
s7
C360
4700/25
4700/25
4700/25
4700/25
x: NOT USED
O: USED / APPLICABLE