Service manual

A
1
2
3
4
5
6
7
8
9
10
BCDEFGH I JK
L MN
119
OPERATION 2/2
RX-V765/HTR-6270/AX-V765
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
󱚡
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。
● 󱚡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。
CB459 CB460
CB457
CB456
CB454
CB451
CB453
IC451 IC451
IC452 IC452
IC453 IC453 IC454 IC454
JK41
JK451
CB455
CB458
CB452
CB461
CB462
W4301
CB463
CB465
CB464
IC461
IC461
0
12.0
-11.9
-11.9
-11.9
-11.9 12.0 0 0 0 0 0
0
12.0
11.9
00
0
-11.8
00
0
11.9
00
0
-11.8
00
0
11.9
00
0
-11.8
00
0
11.9
00
0
-11.8
-11.9
0
0
0
0
0
0
0
12.0
00
0
5.0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2.5 2.5 2.5
0
2.5 2.5 2.5
0 0 0
0
0
3.4 3.4
5.0 5.0
3.3 3.3
-11.8 -11.8 -11.8 -11.8
-0.4
-0.4
1.0
5.0
5.0 5.0 5.0
2.5 2.5
0
0 0 0
-12.0 -11.9
0.4 0.4 0.2 0.2 5.3
12.0
-11.9
0
0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0
0 0 0 0 0 0
0
5.3 3.3 3.3
-0.4
-0.4
1.0
0 0
0
3.4 3.4 5.0 5.0 5.0
5.0
0 0 0 0
12.0 -11.9
-11.8 -11.8 -11.8 -11.8
0.2 0.2 0.4 0.4
5.0
ANALOG IN
CENTER
SURROUND L
SUBWOOFER
FRONT L
SURROUND
BACK L
SURROUND
BACK L
DIGITAL IN
IC461: NJM2068MD-TE2
Dual operational amplifier
OUT1
OUT2
–IN1
+IN1
+IN2
-IN2
–VCC
+VCC
1
2
3
4
8
7
6
5
+
–
+
–
1
2
3
4
8
7
6
5
1OUT
1IN–
1IN+
V
CC–
V
CC+
2OUT
2IN–
2IN+
OUT
V
CC–
V
CC+
36 pF
37 pF
14 pF
7 pF
15
460
15
IN+
IN
IC451-454: NE5532DR
Dual low-noise operational amplifiers
SIRIUS
ZONE2/PRESENCE
PRESENCE
AC IN
SPEAKERS
OPERATION (2)
OPERATION (8)
OPERATION (11)
OPERATION (9)
R, T, K, A, B, G, E, F, L, J models
J model
(J model)
(U, C, R, T, K, A, B, G, E, F, L models)
to MAIN (1)_CB152
Page 121
A3
to MAIN (1)_CB154
Page 121 C6
to MAIN (1)_CB153
Page 121 C5
to MAIN (1)_CB155
Page 121 C7
to VIDEO (1)_CB303
Page 122
J5
to VIDEO (1)_CB332
Page 123 J5
to DIGITAL_CB62
Page 116
H4
to DIGITAL_CB61
Page 116
H3
to DIGITAL_CB63
Page 116
H6
to OPERATION (1)_CB402
Page 118
G10
to VIDEO (2)_CB371
Page 124
B7
to OPERATION (2)_CB453
C4
to OPERATION (9)_CB462
(R, T, K, A, B, G, E, F, L, J models)
K5
to VIDEO (1)_CB347
Page 123
C3