Yamaha DVX-1000 Service Manual page 73

Dvd home theater sound system (dvd receiver/subwoofer/speakers)
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A
B
C
MAIN 1/2
1
2
Page 71
L2
to DSP (1)_W4
FL
IC2
0.1
0.1
3
0.1
Page 72
I4
to DSP (1)_W9
0
0.1
0
4
5
SW
6
7
L.P.F
H.P.F
IC3
0
0
0
0
3.3K
5.6K
5.6K
0.1
0.1
IC1
8
0
0
0
9
10
D
E
F
NX-SW1000
POWER AMP
IC7
MUTE
47.5
47.5
2.9
2.9
REGULATOR
-47.5
-46.5
-0.4
L.P.F
LIMITER
0
0
0
0.1
0
0
0
0
0
0
0
0
0
0
0
0.1
0
G
H
I
47.5
PROTECTION
0
FRONT L
0
RELAY
DRIVE
0.1
0.1
0
0.1
0.1
0
0
0
0
0
0
SUBWOOFER
A.N.I.C
0
1.6
0
0
0
0
0
0
0
0
0
0.4
0
IC4
0
J
K
Page 74
H2
to MAIN (4)_W1B
0
0
Page 74
A5
to MAIN (2)_W2B
Page 74
A6
to MAIN (2)_W3B
4.9
3.7
4.9
3.7
IC7: STK433-330-E
3-channel AF power amplifier, stand-by circuit built-in
3
8
Pre
Driver
CH1
11
+
12
1
2
9
* 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.
L
M
N
DVX-1000
STK433-330-E
IC7
STK433-330Y-E
Pre
Pre
Driver
Driver
CH2
CH3
MONO IC
+
+
Bias Circuit
SUB
5 4 6 7
10
13
14151617
19 18
IC1–4 : NJM4580E
Dual operational amplifier
OUT
1
8
+V
1
CC
–IN
2
7
OUT
1
2
+
+
+IN
1
3
6
–IN
2
–V
CC
4
5
+IN
2
* 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。
73

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