Service manual
ABCDEFGH
1
2
3
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IJK
7
8
DVR-S120/NX-P120
77
■ DVR-S120 SCHEMATIC DIAGRAM (MAIN 2/3)
FRONT_L
REAR_L
CENTER
0
0
0
4.8
4.7
0.1
10.8
10.8
-12.0
-11.8
5.0
4.8
4.4 5.0
5.0
0.1
0
0
0
0
0
0
0
0
0
0
0
-18.8
-18.8
-19.3
-29.7
0
0
0
0
11.8
11.8
11.8
-12.2
-12.2
-12.2
10.5
30.2
-5.1
4.8
0
4.8
0
0
0
0
0
0
5.0
0
-18.8
-18.8
-19.3
-29.7
0
-18.8
-18.8
-19.3
-29.7
0
-18.8
-18.8
-19.3
-29.7
0
0
2.5
2.5 5.0
5.6
5.0
5.0
5.0
-4.5
0
0
8.5
0
0
0
5.0
4.9
5.4
5.0
5.0
5.0
30.2
0.1
0.1
5.9
0.9
0.3
0.3
5.03.3
3.3
0
0
0
0
0
0
0
0
0
00
-21.9
5.0
5.0
0
0
0
0
5.0
5.0
0
0
0
0
5.0
5.0
-21.8
-29.7
-29.7
0
5.0
4.8
2.5
0
-18.8
-18.8
-19.3
-29.7
AC45.5
(1)
(1)
(1)
SYSTEM CONTROL
X : NOT USED
D-AMP
MODULE
D-AMP
MODULE
D-AMP
MODULE
D-AMP
MODULE
D-AMP
MODULE
DVD MECHANISM
Page 71 C7
to DVD M2
Page 79 E2
to SUB (3)
Page 73 E5
to DVD M4
Page 73 D5
to DVD M4
Page 75 F1
to DIGITAL
Page 79
A4
to SUB (1)
Page 76
J5
to MAIN (2)
Page 79
G6
to SUB (1)
Page 79
G7
to SUB (1)
* 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.
IC1 : NJM22279M
Video Switch
14 13 12 11 10 9 8
1
1
2
2
34567
VIN3
SW1
VIN2
MUTE2
VOUT2
GND2
GND1
V-
SW2
VIN1
MUTE1
VOUT1
N.C.
V+
IC14 : PQ025EZ5MZP
Voltage Regulator
DC INPUT (VIN) DC OUTPUT (VO)
ON/OFF CONTROL (VC)
GND
2
5
31
I C
IC2–4 : NJM2068MD
Dual OP-Amp
–+
OUT1
–IN1
–VCC
+VCC
OUT2
1
2
3
4
5
+IN1 –IN2
+IN2
– +
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