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A
B
Q Q
3 7 6 3 1 5 1 5 0
SCHEMATIC DIAGRAM-1(SD-1)
AUDIO SECTION
NAAF-8911 (1/2)
1
U15
AMPLIFIER PC BOARD
TO NADG-8816
(SD-6:A3)
P5505
R5500
RI
330
P7900
C5701
R5503
102J
330
R
C5503
R5543
CD
220K
221K
C5504
R5504
221K
L
R5544
2
330
220K
R5505
R
R5545
330
TAPE OUT
220K
R5546
R5506
220K
L
330
R5547
R5507
220K
R
330
C5507
TAPE
221J
C5508
R5508
221J
L
330
R5548
220K
C5702
102J
R5549
R5509
220K
R
330
C5509
221J
VIDEO 3
C5510
R5510
221J
L
330
R5550
220K
R5511
R
330
R5551
VIDEO 2 OUT
220K
T E
L
1 3 9 4 2 2 9 6 5 1 3
R5552
R5512
220K
L
330
C5703
3
102J
R5553
R5513
220K
R
330
C5513
VIDEO 2
221J
C5514
R5514
221J
L
330
R5554
220K
R5515
R
R5555
330
VIDEO 1 OUT
220K
R5556
R5516
220K
L
330
R5557
R5517
220K
R
C5517
330
221J
VIDEO 1
C5518
R5518
221J
L
330
R5558
220K
C5704
102J
R5559
R5519
220K
FR
C5519
330
4
221K
C5520
R5520
221K
FL
330
R5560
220K
R5561
R5521
220K
SR
C5521
330
221J
C5522
R5522
SL
221J
330
R5562
220K
C5705
102J
R5563
R5523
220K
SW
C5523
330
221J
C5524
R5524
C
221K
330
R5564
220K
C5706
102J
w w w
5
<Note>
.
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
C
TO NADG-8816
TO NADG-8816
(SD-6:A2)
TO XM
(SD-6:A3)
P303
P302
TO NADG-8817
(SD-7:H1)
P304
JL5502A
R5575
220K
R5576
220K
R5577
47K
R5578
47K
R5579
220K
C5551
64
1
INL9
1-C
63
2
INR9
1-OUT
62
3
INLA/RECL1
AGND
61
4
INRA/RECR1
2-OUT
C5552 47/25
60
5
INL8
2-C
59
6
INR8
3-C
58
7
INL7
3-OUT
57
8
INR7
AGND
56
9
C5554
INL6
4-OUT
55
10
INR6
4-C
54
11
INL5
5-C
Q5501
53
12
INR5
5-OUT
52
13
INL4
R2S15211FP
AGND
51
14
47/25
INR4
6-OUT
50
(Botom view)
15
INL3
6-C
49
16
INR3
FLC
48
17
INL2
FLOUT
47
18
INR2
AGND
46
19
INL1
FROUT
45
20
C5558 47/25
INR1
FRC
44
21
AVEE
BASS_L1
C5560
43
22
CLOCK
BASS_L2
42
23
DATA
TRE_L
DGND
41
24
223J
AVCC
7.5V
R5589
-7.5V
1K
Q5503
NE5532
3
DMIXR
1
R5591
10K
2
R5590 10K
R5592
C5590
470
330J
R5594 10K
R5595 10K
C5591
330J
R5596
R5597
470
R5598 10K
5
DMIXL
7
R5599
6
Downmix
10K
Q5503 NE5532
x
a o
y
i
http://www.xiaoyu163.com
D
E
R5681
220K
R5630
Q5630A
SW_OUT1
220
3
NE5532
C5600
1
SW_OUT
R5610
RN1441
C5630
47/50
2
Q5600
47/50
270
R5633
R5634
10K
C5632 103J
Q5601
Q5630B
5
NE5532
7
6
47/25
Q5603
C5553
47/25
C_OUT
C5603
SR_OUT
47/50
R5613
2.2K
SL_OUT
R5614
47/25
C5604
2.2K
C5555
47/50
47/25
SR_OUT
Q5604
SL_OUT
Q5605
C5556
C5557
C5605
L_OUT
47/25
L_OUT
47/50
R5615
2.2K
Q
R_OUT
Q
R_OUT
R5616
3
7
6
C5606
2.2K
C5559
474J
47/50
823J
R5585
1.8K
C5561
Q5606
Q5607
2SC1815
Q5670
Q5684
78M12
R5674
+12V
3 O
1
C5607
RN1441
I
47/50
C_OUT
R5617
2.2K
68
R5684
680
R5685
680
-12V
3 O
2
I
Q5685
R5675
Q5671
68
2SA1015
79M12
R5667
22
DAC_FR
R5593
1.2K
1.2K
DAC_FL
R5666
+12V
22
RL1N4003 x4
R5672
+22V
D9002
D9001
47(2W)
R5670
47(2W)
D9003
D9004
R5673
-22V
68(2W)
R5671
68(2W)
u 1 6 3
.
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F
G
2
4
8
9
9
TO NADG-8816
(SD-6:A2)
P301
VOLH
SEC1H
PROTECT
R5620
100
Q5610
RN1441
RN1441
R5623
0
R5624
0
RN1441
RN1441
R5625
0
3
1
5
1
5
0
8
9
2
R5626
0
RN1441
R5627
0
221J
C5707
R5531
100
221J
C5708
GND_S1
R5660
2.2(1W)
S1L+
GND_AMP
R5661
S1L-
2.2(1W)
NOTE
THE COMPONENTS IDENTIFIED BY MARK
REPLACE ONLY WITH PART NUMBER SPECIFIED.
m
VOLTAGE (MEASURED WITH VOLTMETER)
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
c o
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS (
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)
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
HT-R640
H
2
8
9
9
4
9
8
2
9
9
PRE OUT
SW
13
12
11
10
SR
9
8
SL
7
6
R
5
4
L
3
2
C
1
!
ARE CRITICAL FOR SAFETY
IS DC VOLTAGE.(NO INPUT SIGNAL).
) ARE IN uF/WV.
PRINTING SIDE
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