
A
B
C
D
E
F
G
H
I
J
K
L
MCX-1000
73
SCHEMATIC DIAGRAM (OPERATION 3/3)
1
2
3
4
5
6
7
8
9
★
All voltages are measured with a 10M
Ω
/V DC electronic voltmeter.
★
Components having special characteristics are marked
s
and
must be replaced with parts having specifications equal to those
originally installed.
★
Schematic diagram is subject to change without notice.
INPUT
OUTPUT
COMMON
IC400: NJM79L05A-T3
Voltage Regulator
1
3
2
+
–
+
–
1
2
3
V
OUT
5 ON/OFF
4 Oadj
V
IN
V
REF
COM
Voltage
regulator
Over current
protection
circuit
Over heat
protection
circuit
ON/OFF
circuit
Soft
start
Oscillator
ERROR AMP.
PWM COMP.
F/F
Q
S
R
IC401~403 : PQ1CG2032FZ
Voltage Regulator
IC404: PQ05RD11
Voltage Regulator
1
Vin
2
Vo
4
Vc
3
GND
Amp.
IC405: M5237ML
Regulator
3
OUTPUT
1
INPUT
Starter
Circuit
Overheat
Protection
Sudden Current
Protection
ASO
Protection
2
GND
Standard
Voltage
–
+
2.3
AC 5.5
2.2
5.6
5.6
11.8
10.6
0
-0.8
4.1
4.2
4.8
10.6
10.1
-9.9
-9.9
-19.5
-18.4
-18.4
-5.0
-5.0
0
-19.5
-24.2
-29.9
-29.9
-29.2
-29.2
0
-28.5
-28.5
4.9
9.6
9.6
12.4
5.3
5.3
0
5.2
5.2
-5.0
10.1
24.3
24.3
9.6
21.6
23.9
4.9
0
0
0
4.8
4.9
4.9
0
10.7
24.3
5.0
5.3
5.2
4.9
9.6
-22.6
0
24.6
12.1
6.7
22.3
6.7
0
0
24.6
12.1
0
1.3
6.7
0
0
4.8
12.8
6.7
0
0
6.8
22.3
12.8
5.2
5.2
0
1.3
6.8
0
0
9.2
9.2
3.4
3.4
0
5.0
5.0
22.3
0
9.2
2.1
5.0
5.0
9.2
2.1
0
0
0
0
5.5
12.5
0
0
4.9
AC 11.3
AC 19.3
AC 8.7
AC 17.6
AC 3.9
AC 11.9
22.3
POWER
SUPPLY
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE REGULATOR
VOLTAGE
REGULATOR
P
age 69
to MAIN
A1
P
age 69
to MAIN
D7
OPERATION (5)