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A
B
Q Q
3 7 6 3 1 5 1 5 0
BLOCK DIAGRAMS
Q303
2
1
RCA Type
LPF
10.4dB
3
RCA
INPUT
Q301
Hot
XLR
10.4dB
XLR Type
2
1
3
Q301
Cold
XLR
10.4dB
Q303
RCA
2
0dB
LPF
U7: NAPS-7793
T E
L
1 3 9 4 2 2 9 6 5 1 3
F901
POWER
1A/125V
CONTROL PC BOARD
3
U7: NASW-7795
U1: NAPS-7788
POWER SWITCH PC BOARD
PRIMARY POWER SUPPLY
4
PC BOARD
F901
12A/250V
AC INLET
RL901
AC 100V
50/60Hz
w w w
5
U5: NAPS-7790
SWITCHING CONTROL
.
PC BOARD
C
+B+(27V)
+7V
+3V
RL501
Q302
MOS FET
Driver
2
0dB
(7.4dB)
PWM
Q507-Q510
Modurator
(6.7dB)
RL501
-B
Q405-Q408
+B
Q302
RL502
MOS FET
6
0dB
Driver
(7.4dB)
Q507-Q510
+3V
+7V
RL502
-B(+27V)
Start,Stop
Muting Circuit
Q701
Sub Transformer
T9801
D9801-D9804
+12V
Power Relay
MOS FET
Control circuit
Muting Circuit
Q9801,Q9802
Q9821,9820
Inrush current
Prevention Circiuit
D902 Triac
Smoothing
Switching
D901
Capacitor
circuit
Line Filter
Full Bridge Type
C909-C912
Q881-Q884 FET
Q869-Q876
Start Circuit
Q843-Q845
Constant Voltage
+5V
x
Power Supply
a o
Control circuit
y
Q841,Q842
High-Brid Type
Constant Voltage
i
+5V
(PFM & PWM)
Power Supply
Q848
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DTA-9.4
D
E
8
U16: NAAF-7798
TEMPERATURE SENSOR
70kHz LPF
PC BOARD
Over Current
Detection
Q701
MOS FET Temperature
Detection Cuircuit
70kHz LPF
Q709
R710 (PTC Themistor)
Current Protection
Q717
and
Temperature protection
MOS FET
Circuit
Relay Driver
Q704
Q716
Q711
Reset
Q9822
Constant Voltage
Q
Q
3
7
6
3
Power Supply
+5V
Q9804
Sreaker Output Relay
Reset IC
Control Circuit
Q9810,Q9811
Q9808
Multi Vibrator
Q9806
High-Frequency
High-Speed
Rectifier Circuit
Transformer
Rectifer Diode
D903-D906
D101 - D104
T901
Resonance
Circuit
T902
Rectifier Circuit
NFB
D941-D944
Q817
u 1 6 3
U2: NAPS-7788
.
SECONDARY POWER SUPPLY
PC BOARD
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F
G
2
4
9
9
8
U15: NAAF-7797
POWER AMPLIFIER PC BOARD
RL701
+5V
D705
Speaker Output
DC Output
Relay Driver
Warning
DC Offset
Q708,Q715
Detection
Q580, Q581
Q717
-27V
+5V
Temperature or
Current
Detection
Warning indicator
Circuit
D751
Q751, Q752
U16: NAPS-7792
TRIGGER TERMINAL PC BOARD
1
5
1
5
0
8
9
2
4
Q9812
12V Trigger/
Cotrol Link
Detection Circuit
Q9832-Q9833
LED Driver
Q9813-Q9815
D9813
D9812
Output
Smoothing
Capacitor Arrey
+B (+27V)
Coil
C103-C106
Bus plate
GND
Bus plate
-B (-27V)
Bus plate
m
Error amplififer
Circuit of
Output voltage
c o
DTA-9.4
H
2
9
9
SPEAKER
OUTPUT
9
8
2
9
9
P9910
12V TRIGGER
CONTROL LINK IN
Standby/Warning
(Red)
Power
(Blue)
U8: NAETC-7794
DISPLAY LED PC BOARD
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