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A
B
Q Q
3 7 6 3 1 5 1 5 0
SCHEMATIC DIAGRAMS-1
POWER AMPLIFIER SECTION
P303
(NO USE)
1
C313
P301
R334
R337
120
10K
100/50
R338
RCA type
C314
R344
R335
10K
0
100
100/50
P608B
INPUT
P302
4
C303
R301
R307
1
2
10K
XLR type
120
47/50
C301
3
681J
C304
R302
120
47/50
R308
10K
R343
R303
0
100
C302
C305
681J
47/50
2
T E
L
1 3 9 4 2 2 9 6 5 1 3
3
26.8
Q501
2SA1462-L
(Y34)
Q503
2SC3733-L
4
Q504
Q502
2SA1460-L
2SC3735-L
(Y34)
-26.8
C606
C605
0.47/50
0.47/50
w w w
26.8
5
-26.8
.
C
R339
33K
4
2
Q303
1
Q402
3
8
NJM4565M
RN2402
15.0
R409
5.6K
R405
J301
(NO USE)
C306
33
331K
INPUT SEL
R309
R430
R314
RCA
100(B)
33K
10K
1
R312
C315
2
4
Q403
10K
4
6
2SA1162-GR
7
2
47/50
3
S301
Q302
Q301
R545
R401
1
NJM5532M
BAL
5
4.7K
22K
8
3
8
NJM4565M
C310
R543
R547
C308
22K
C526
33K
220/16
101K
220/16
/100V
Q405
2SA1462-L
(Y34)
R416
3.3K
C412
101K
C402
102J
R413
Q407
2SC3735-L
10
(Y34)
Current
P605
Protection
26.8
BUSBAR
C529
C522
681J/100V
123J
RL502 4
L501
NCH-1470
6
R554
1.5U
Q505
5
15
FQP22P10
(1W)
Q515
R512
2SA1162-GR
1K
Q517
2SC1622A
-D18
P607A
(NO USE)
R516
C534
0.047x 2
C521
R539
L506
334J
L505
153J/250V
27(2W)
(5W+5W)
C509
NCH-1590
NCH-1590
Q513
273J
13U
13U
2SC1622A
C519
C520
-D18
824J/250V
824J/250V
R513
1K
R555
2
15
3
(1W)
RL502
Q506
FQP33N10
1
C530
681J/100V
RL501
P606
RL502
NRL-2P2A-DC24-166
NRL-2P2A-DC24-166
BUSBAR
-26..8
R702
Q716
2SC1622A -D18
22K
C611
C612
105J
105J
x
a o
y
C602
C601
10000/35
10000/35
P608A
i
L601
L602
NCH-1591
NCH-1591
30U
30U
C603
C604
E601
+27
105J
105J
-27
P601A
P601B
P601C
From NAPS-7789
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DTA-9.4
D
E
8
R318
10K
R316
6
7
10K
Q303
Q401
2SA1162-GR
5
0.5
NJM4565M
R406
J302
33
C307
(NO USE)
DC OFFSET
331K
ADJUSTMENT
R320
S/E
R325
S301
R323
4
33K
10K
C316
R317
5
Q404
10K
10K
2SA1162-GR
2
1
47/50
6
Q302
7
6
Q301
R402
R544
R319
4.7K
3
BAL
22K
5
10K
NJM5532M
R546
R542
NJM4565M
33K
C525
22K
101K
/100V
Q406
C410
2SA1462-L
220/6.3
(Y34)
(PW)
R417
3.3K
C411
C413
220/6.3
(PW)
101K
C403
102J
R412
Q408
Q
Q
2SC3735-L
10
3
7
6
3
(Y34)
0
D703
R717
10K
1SS355
26.8
C531
681J/100V
1
RL501
L503
3
NCH-1470
R556
Q511
2
1.5U
7.0
15
FQP22P10
(1W)
R531
1K
Q507
2SA1462-L
Q518
(Y34)
Q509
2SC1622A
2SC3733-L
-D18
R517
0.047x2
C535
(5W+5W)
334J
C518
Q514
273J
2SC1622A
-D18
R532
Q510
1K
Q508
2SA1460-L
2SC3735-L
R557
5
(Y34)
26.0
15
6
(1W)
RL501
-7.0
Q512
FQP33N10
4
C532
Q605
681J/100V
2SA1930
R608
3.0
220
(2W)
-26.8
Q607
2SC2712-GR
+7.0
C609
D601
UDZS3.6B
100/6.3 (PW)
C610
D602
100/6.3 (PW)
UDZS3.6B
-7.0
C608
C607
Q608
10/16(PW)
10/16(PW)
2SA1162-GR
Q604
Q603
79M07HF
78M07HF
R609
C617
C616
220
-3.0
Q606
10/50(PW)
10/50(PW)
(2W)
2SC5171
R611
R610
100(2W)
100(2W)
u 1 6 3
.
HeatSink
http://www.xiaoyu163.com
F
G
2
4
9
9
NOTE
.
THE COMPONENTS IDENTFIED BY MARK
ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
. VOLTAGE(MEASURED WITH VOLTMETER)
IS DC VOLTAGE. (NO INPUT SIGNAL)
. ELECTROLYTIC CAPACITORS (
) ARE IN uF/WV.
. ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030
3pF 330
33pF 331
330pF 333
0.033uF
.
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
. THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX)
PRINTING SIDE
.
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
U15
POWER AMPLIFIER PC BOARD
RL701
NRL-2P5A-DC24-142
R596
22
-15
(1/2W)
R595
+15
22
(1/2W)
DC Output
Detector
R592
C582
R585
220K
10K
R581
R583
R589
474J
4
NJM4565M
100K
47K
NJM4565M
10K
R591
2
R586
5
4.7K
R593
Q580
1
7
R588
4
10K
1M
D580
Q580
3
2
8
6
10K
1SS355
R580
R582
NJM4565M
Q581
1
6
100K
47K
Q581
3
D581
8
1SS355
5
NJM4565M
1
5
1
5
0
8
9
2
5.0
NAAF-7798
U16
Q709
JL701B
JL701A
2SC2712GR
D704
2
1
1SS355
D707
Q701
UDZ5.1B
POSISTOR
74HC14
PC BOARD
R728
Thermal
0
Protection
100K
5.0
C706
R733
R732
R718
103
100
100
100
Q752
Q751
TC7W74FU
D751
TC7S14F
5
SEL2110R
2
4
1
CK
VCC 8
5.0
1
Q753
Q717
2
D
PR 7
3
5.0
RN1402
TLP521-2GB
Q704
3
Q
CLR 6
1
8
TC7W74FU
4
GND
Q 5
1
CK
VCC 8
2
7
2
D
PR 7
Q713
RN1402
3
Q
CLR 6
4
GND
Q 5
Q754
C707
Over Temp. & Over Current
RN1402
104
Warning
Q610
78L05
5.0
I
O
G
Q701
74HC14
Q702
RN1402
10
11
Modulator
Operation
D708
1SS355
Q706
D710
1
8
RN1404
SEL2910A
Modulator
2
7
Q719
Mute
RN1404
Q711
TLP521-2GB
5.0
Q715
D705
2SA1162-GR
R725
SEL2110R
330
5.0
R735
5.0
4.7K
14
9
8
12
Q705
13
RN2402
Q707
7
Q701
RN2402
Q701
Q718
Q714
74HC14
TLP521-2GB
74HC14
RN1402
RN1402
m
FlipFlop
DC Output
Clear
Warning
-26.8
c o
26.8
R713
6
3
100
Q711
TLP521-2GB
5
4
Power MOSFET
Mute
DTA-9.4
H
2
8
9
9
NAAF-7797
SPEAKER
OUTPUT
P651
P502
3
4
1
2
L507
P501
NCH-1607
P501A
UDD : Yes
(with FL core)
UJJ : No
(only crimp AS)
P607B
E501
NO USE
[NOTE]
NC: No connection
NU: No use
7
4
9
8
2
9
9
P702
GNDC
+5VC
ERR
FMUTE
OUTRL
PHTCP
GMUTE
P701
GNDC
+5VC
ERR
FMUTE
OUTRL
PHTCP
GMUTE
Q708
2SA965-Y
R726
6
3
100
Q717
5
4
Output RL
Mute
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