Yamaha RX-497, Руководство по обслуживанию

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A B C D E F G H
1
2
3
4
5
6
I J K
7
8
RX-497
31
* All voltages are measured with a 10M
Ω
/V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
■
SCHEMATIC DIAGRAM (MAIN)
0.9
6.0
6.0
29.3
0.1
0.1 0.1
0.1
1.1
1.1
-1.1
-1.1
-1.1
-0.5
-0.5
0.5
51.0
51.0
51.0
50.9
50.9
-0.4
0 0
0
0
0
0
0
0
0
0
0
0.2
0.1 9.8
9.8 1.1
1.0
~
~
~
~
~
~
~
~
~
~
~
~
~ ~ ~
~
~
~
~
~
~
~
~
~
~
~
~ ~
~
~
9.8
0.2
0
0.1
0.8
4.7
4.7
4.7
4.9
4.9
4.8
0
0
0
0
-0.4
0.6 0.6
-49.8
-49.8
-49.8
-49.8
-50.6
0.6 0.6
-50.6
-50.3
-51.1
-51.1
-1.0
-1.0
-0.5
-1.0
-0.4
1.1
1.1
0.6
0.6
51.0
51.0
50.7
0
0
0
0
0
0
-50.3
-51.1
-51.1
29.3 29.3 29.3
-0.4
15.3
15.3
15.3
15.3
-15.1
-14.5
22.4
0
0 0
0 0
AC74.2
0
14.7
35.9
36.0
36.0
51.0
(37.3)
-51.1
(-37.3)
-36.1
29.3
29.3
0
0
5.2 5.2
5.2 5.2
3.6 3.6
4.2 4.3
0
0
AC5.1
AC54.3
2
CH1
2
CH2
TO OPERATION (1) W801
Page 30 D-8
TO FUNCTION (2) CB605
TO POWER TRANSFORMER
Page 29 F-3
T
O
MAIN (2) CB257
P
age 31 K-5
TO MAIN (4) W291
TO POWER TRANSFORMER
or
Page 31 G-5
TO POWER TRANSFORMER
T
O
PO
WER
TRANSFORMER
TO POWER CABLE TO OPERATION (12) CB282
Page 30 G-5
T
O
OPERA
TION (2)
W404
P
age 30 E-2
SPEAKERS
Vout
+Vs
GND
IC102 : LM61CIZ
Temperature Sensor
IC252 : TC4013BP
Dual D Flip Flop
1
2
3
4
5
6
7
1Q
1CP
1CL
1PR
1DATA
1Q
VSS
14
13
12
11
10
9
8
VDD
2Q
2CP
2CL
2PR
2DATA
Q
CP
CL
Q
D
PR
2Q
Q
CP
CL
Q
D
PR
Point
w
CH 1 : (+) of C252
CH 2 : Collector of Q251
↑
AC POWER ON
(Connect the power cable)
↑
AC POWER OFF
(Disconnect the power cable)
↑
AC POWER ON
(Connect the power cable)