Nx-Sw200 Schematic Diagram - Yamaha DVX-S200 Service Manual

A B
DVR-S200/NX-P200

NX-SW200 SCHEMATIC DIAGRAM

1
BUFFER
INPUT
0
0
0
-14.9
2
SYSTEM
CONNECTOR
0 0
0
14.7
3
4
5
6
7
8
88
C D E
L.P.F.
H.P.F.
0
0
0 0
0 0
14.7
-14.9
EUROPE
F G
LIMITTER
14.8
0 0 0
0
0 0
0
0
0 0
0
0 0 0
-15.0
PROTECTION
25.4 1.1
-23.7
0
14.7
48.6
AC78.9
15.2
0
0
0
-53.5 53.2
-15.4
0
-15.0
-49.1
POWER SUPPLY
0 0
0 0 0
0
14.1
0
14.1
0
0
H I J
POWER AMP
A.N.I.C.
0 0
0
0 0 0
0 0 0 -0.4
0
0
-15.0
14.7
IC1 : STK404-120
Power Amp
6
POWER
BIAS
STAGE
PRE
2
DRIVER
+
–
3
SUB
5 4 1
IC2, 4, 5 : µPC4570HA
Dual OP-Amp
1
– +
1 2 3 4 5
V V –Vm +Vm V
CC O1 1 1 EE
IC3 : TA7317P
Protector
14.7
Power supply
ON/OFF
detecting circuit
1
Overcurrent
detecting circuit
2
Current voltage
3 detecting circuit
* 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.
K L
53.1
53.1
53.1
0
-0.7
0
-1.9
0
7 10
11
12
8 9
2
+ –
6 7 8 9
+Vm –Vm V V
2 2 O2 CC
9
8
Muting Constant voltage
circuit power supply circuit
Schmidt Relay drive
OR circuit 6
circuit circuit
Discharging
Substrate
circuit
7 4 5
GND