Yamaha RX-V750, Service Manual

Page: 86 / 128

A B C D E F G H
1
2
3
4
5
6
I J K L M N O
7
8
9
10
86
RX-V750/DSP-AX750/DSP-AX750SE
RX-V650/HTR-5760
* 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 (POWER & SUB TRANS)
REGULATOR
POWER SUPPLY
L
SL
C
SBL
AC 31.2
AC 17.7
19.3
–20.3
0 0
10.7
–11.2
0 0
0
5.0 10.7
0
5.0 10.7
0
11.9 19.3
0
0.9
5.0
0
–11.8 –20.3
1.1
0
0
0
–0.6 –0.6
–
0.6
–0.6
–
0.6
–
0.6
54.4
54.9 53.8
53.8
0
0
0
53.8
53.8
1.1
54.4
54.9
53.8
53.8 54.9
1.1
54.4
–
0.6
–
0.6
0
0
53.8
53.8 54.9
1.1
54.4
–
0.6
–
0.6
0
0
53.8
53.8 54.9
1.1
54.4
–
0.6
–
0.6
0
0
53.8
53.8
54.9
1.1
54.4
–
0.6
–
0.6
0 0
53.8
53.8 54.9
1.1
54.4
55.9
–
55.7
–
55.7
–
53.8
–
53.8
–53.2
–53.4
0.5
–
0.5
–0.5
–1.0 –1.0
0
0
0.5
55.9
55.6
–
0.6
–
0.6
0 0
1.1
–
1.0
–0.3
0
0
0
0.3
WC05070 WC05070
s7
s8
C301, 303, 304
C302, 305, 336,
337
10/16
UU13710
10/16
UR83710
10/16
UU13710
10/16
UR83710
10/16
UU13710
10/16
UR83710
4.7/50
WB71360
4.7/50
UR86647
s7
s7
s8
s8
s7
s8
s8
TO POWER TRANSFORMER
Page 85 F-7
TO MAIN (1) W8
RX-V750/DSP-AX750/DSP-AX750SE Page 87 F-9
RX-V650/HTR-5760 Page 88 E-7
TO CONVERSION (1) CB706
Page 85 D-10
TO MAIN (1) W12
TO POWER TRANSFORMER
POWER (2)
POWER (1)
Page 85 A-5
TO MAIN (1) CB6
Page 85 A-5
TO MAIN (1) CB5
Page 85 A-1
TO MAIN (1) W15
P
age 80 I-2
T
O
FUNCTION (1) CB307
P
age 80 I-2
T
O
FUNCTION (1) CB308
P
age 80 I-3
T
O
FUNCTION (1)
W301
X: NOT USED
O: USED / APPLICABLE
Page 86 N-1
TO SUB TRANS CB407
IC301 : LM61CIZ
Temperature Sensor
Vout
+Vs
GND
0
4.7 4.1
9.9
9.9
9.9 0.7
0
1.2
0.1
8.7
~
~ ~
~ ~
~ ~
~ ~
~ ~
~
~
~
0.5
~
~
0
~
~~
~~
~~
0
0.2
0
0.2
0
4.9
4.9
5.1
0.8
0
0
0
0
5.1
5.1
0
0.1
0
4.9
~
~
~
~
AC 8.1
G model (AC158.3)
J model (AC56.8)
Page 85 G-10
TO MAIN (2) CB121
X: NOT USED
O: USED / APPLICABLE
TO POWER CABLE
POWER TRANSFORMER (U, C, T, K, A, B, G, E, J)
OR
POWER (2) W291 (R, L)
SUB TRANS
IC402 : 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
* 電圧は、内部抵抗10MΩの電圧計で測定したものです。
* Z 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。