Yamaha RX-V740, Руководство по обслуживанию

Страница: 91 / 152

A B C D E F G H I J K L
RX-V740/RX-V740RDS/DSP-AX740
RX-V640/RX-V640RDS/HTR-5660/DSP-AX640/DSP-AX640SE
91
SCHEMATIC DIAGRAM (MAIN)
1
2
3
4
5
6
7
8
9
★
All voltages are measured with a 10M
Ω
/V DC electric 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.
IC401: LM61CIZ
Temperature Sensor
Vout
+Vs
GND
IC402: NJM7812FA
IC404, 406: NJM7805FA
Voltage Regulator
INPUT
OUTPUT
COMMON
IC403: NJM79M12FA
IC405: NJM79M05FA
Voltage Regulator
COMMON
OUTPUT
INPUT
P
age 92
to PO
WER (2)
to MAIN (1)
A6
to MAIN (3)
to POWER (1)
Page 92 D2
to MAIN (3)
to PO
WER (2)
P
age 92
D1
to PO
WER (2)
P
age 92
D5
x: NOT USED
O: USED / APPLICABLE
SPEAKER RELAY
MUTE
REGULATOR
REAR C POWER AMP
MAIN L POWER AMP
REAR L POWER AMP
REAR R POWER AMP
CENTER POWER AMP
MAIN R POWER AMP
to P
o
w
er
T
ransf
or
mer
to P
o
w
er
T
ransf
or
mer
H4
D7
to MAIN (1)
E3
H4
RX-640/RX-V640RDS/HTR-5660/DSP-AX640:
P
age 85
A7
DSP-AX640SE:
P
age 87
A7
RX-740/RX-V740RDS/DSP-AX740:
P
age 83
A7
to FUNCTION (4)
RX-640/RX-V640RDS/HTR-5660/DSP-AX640: Page 85 A6
DSP-AX640SE: Page 87 A6
RX-740/RX-V740RDS/DSP-AX740: Page 83 A6
to FUNCTION (4)
MAIN L
REAR L
CENTER
1.0
1.0
-0.5
-1.0
-0.4
-54.3
-55.5
-0.4
55.5
55.5
0
0
0
0
0
0
55.4
-55.5
-55.5
-1.1
-1.0
1.0
1.0
-0.4
-55.5
55.5
0.6
-0.5
-55.5
-0.4
0
0
-55.5
55.5
55.4
0
-1.0
-55.4
-55.5
55.5
55.5
0
0
-0.5
-0.4
0.6
-0.5
0
0
0
55.4
0
0.6
-1.0
1.0
-1.0
-0.5
0.6
0
0
0
1.1
-54.3
-54.3
-1.0
0
-55.4
-55.4
-55.2
55.5
0.6
-0.5
-55.5
-39.6
-37.0 -37.5
-36.2
-22.9
55.5
0
0
-55.5
-54.3
-55.2
1.1
-1.0
0.6
0
0
0
0
55.4
-0.5
-54.3
-55.3
0
0.3
0.3
-1.0
-1.0
-54.3
1.0
-1.0
-54.3
-0.6
-55.5
-0.5
-0.5
-1.0
-1.0
1.0
1.0
0.6
0.6
-0.6
-0.6
-1.0
-1.0
0
55.5
55.5
0
4.8
0
0 0
0.7
0.7
0.7
0
0.7
0
0.7
0
0.7
0
0.7
0
0 0
4.8
0
55.5
55.5
55.4
0
0
0
0
0
0.6
0.6
0.7
0
37.0
-28.5
0.3
0.8
37.7
37.7
0.3
0
0
0
-36.5
-29.2
-29.2
0
24.8
12.7
0.3
25.3
12.7
0.3
25.2
12.7
0.3
37.0
37.0
37.0
37.7 0
0
0
0
37.7
-37.5
-37.5
0
0
55.5
(38.7)
-55.5
(-38.8)
AC
81.5
AC
57.0
0.9
4.9
0
-0.4
-1.0
-55.4
-0.5
-0.5
55.3
0
55.5
0
0
0
0.5
0.5
-55.5
-55.5
0
0
55.6
55.6
0
0
0
0.1
-0.1
-0.1
10.7
-11.7
-0.1
9.9
0
5.0 10.4
0
5.0 19.0
0
11.9
-20.5
0
-12.0
-11.5
0
-5.0
-0.1
19.8
-20.6
-1.0
1.0
1.0
-1.0
AC
31.7
AC
18.3
-11.9
0
0
-11.9
0
0
37.4 37.4
0
0
0
37.7