Yamaha DVX-S120 Service Manual page 77

A B
DVR-S120 SCHEMATIC DIAGRAM (MAIN 2/3)
1 Q Q
3 7 6 3 1 5 1 5 0
2
0 -5.1
0 4.8
0 0
4.8 4.8
0
0
0
5.0
0
10.5
30.2
SYSTEM CONTROL
10.8
3
0.1
10.8
4.7
0
0
-11.8
-12.0
5.0
4.8
4
4.4 5.0
5.0
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A4
0.1
to SUB (1)
T E
L 1 3 9 4 2 2 9 6 5 1 3
5
FRONT_L
0
0 0
11.8
11.8
0
6 0
0
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J5
to MAIN (2) CENTER
0
0
11.8
-12.2
REAR_L
7
0
0
0
-12.2
-12.2
0
0
0
w w w
8
.
C D E
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Page 75 F1
to DIGITAL
5.6
8.5
0 0
0
0
5.0
0
5.0
-4.5
5.0
2.5 5.0
3.3 5.0
2.5
3.3
0
0
0
0
D-AMP
-19.3
MODULE
-18.8
-18.8
-29.7
0
D-AMP
-19.3
MODULE
-18.8
-18.8
-29.7
0
D-AMP
-19.3
MODULE
-18.8
-18.8
-29.7
0
D-AMP
-19.3
MODULE
-18.8
-18.8
-29.7
0
D-AMP
-19.3
MODULE
-18.8
x a o -18.8
-29.7 y
i
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Page 73 E5
Page 71 C7
to DVD M4
to DVD M2
E2 8
Page 73 D5
to SUB (3)
to DVD M4
5.0
0
4.9
0.3
5.4
5.9
5.0 0.9
Q Q
3 7 6 3
0.3
0
-21.9
-21.8 -29.7
5.0 5.0
0
0 0
0
5.0 5.0
0
0 0
0
5.0 5.0
0
0
0
0
u 1 6 3
.
http://www.xiaoyu163.com
H I
2 4
9 9 8
5.0
5.0
0 0
0 0
0.1
30.2
AC45.5
1 5 1 5 0 -29.7 8 9 2 4
0.1
(1)
Page 79
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to SUB (1)
m
c o
J K
DVR-S120/NX-P120
2
9 9
X : NOT USED
Page 79
G7
to SUB (1)
(1)
9 8 2 9 9
IC1 : NJM22279M IC2–4 : NJM2068MD
Video Switch Dual OP-Amp
14 13 12 11 10 9 8
OUT 1 1 8 +V CC
1
–IN 2 7 OUT
1 2
+ – + –
3
+IN 1 6 –IN 2
2 –V CC 4 5 +IN 2
1 2 3 4 5 6 7
IC14 : PQ025EZ5MZP
Voltage Regulator
DC INPUT (VIN) 1 3 DC OUTPUT (VO)
I C
2 ON/OFF CONTROL (VC)
5
GND
* 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.
77