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Schematic Diagram - A-class Board (2/2) - Sony STR-DA6400ES Service Manual

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6-42. SCHEMATIC DIAGRAM - A-CLASS Board (2/2) -

1
2
A-CLASS AMP BOARD (2/2)
A
Q1902, 1903
LIMITTER DETECT
R1549
100k
B
C
2SD774-T-34
-59.1
-58.3
R1907
100k
D
C1902
22
100V
CN1906
T E
L
1 3 9 4 2 2 9 6 5 1 3
12P
E
C1901
22
-B
12
100V
AGND
11
+B
10
R1903
10
SBLSPOUT
9
AL
SBL BIAS-
8
SBL BIAS+
7
POWER
SBR SPOUT
6
AMP
F
BOARD
SBR BIAS-
5
CN1904
SBR BIAS+
4
(Page 83)
C SPOUT
3
C BIAS-
2
C BIAS+
1
41
1
G
2
A CLASS
AMP
BOARD
(1/2)
(Page 70)
H
I
w w w
J
STR-DA6400ES
3
4
5
6
R1812
C1805
R1807
10k
-58.4
100
2.2k
1/2W
25V
-59.1
-59.1
Q1902
-54.6
2SD774-T-34
-53.5
C1815
Q1804
R1905
R1908
5p
2SC2229-OY
-9
2.2k 2W
270 2W
500V
R1806
3.3k
Q1903
R1934
820 2W
-59.1
-1
R1814
C1811
-0.5
-0.5
5p
100k
-1
-2
1/2W
Q1801
500V
Q1801-1805
HN4C06J
PRE DRIVE
57.7
57.3
C1808
330
25V
C1804
R1805
680p
C1807
330
7p
500V
57.3
57.7
Q1802
2SA1038S-RSE-TP
1
57.7
58.3
57.3
57.7
Q1805
Q1803
2SA949-OY
2SA1038S-RSE-TP
58.3
58.3
R1811
R1809
R1803
R1804
27k
220
220
100
1/2W
C1611
5p
500V
R1614
C1603
100k
100p
1/2W
Q1601-1605
PRE DRIVE
R1607
C1605
R1612
2.2k
100
10k
25V
1/2W
-53.9
-53.6
Q1604
2SC2229-OY
-8.9
R1606
3.3k
C1615
5p
-0.8
500V
-0.3
-0.3
-1
-2
Q1601
HN4C06J
57.7
57.4
C1608
C1604
680p
R1605
330
50V
330
C1607
25V
7p
500V
Q1605
57.4
1
2SA949-OY
57.7
x
57.4
a o
57.7
57.7
y
2SA1038S-RSE-TP
57.9
58.4
58.4
.
i
R1609
R1611
R1604
R1603
100
27k
220
220
1/2W
http://www.xiaoyu163.com
7
8
9
R1813
C1810
3.9k
C1911
100
R1924
1/3W
10
25V
22k
16V
D1902
1SS133T-72
C1803
4
3
2
100p
1
IC1902
LIMITTER
5
6
7
8
D1901
1SS133T-72
R1927
10k
R1925
47k
C1912
R1910
R1921
22k
82k
IC1904
R1802
C1802
2
100p
100k
4.9
14.9
+5V REGULATOR
500V
O G
3
I
1
Q
C1801
Q
IC1904
TA78L05S
4.7
3
7
6
50V
R1906
Q1901
22k
LIMITTER DETECT
C1861
5p
500V
R1864
100k
1/2W
R1613
C1610
3.9k
100
1/3W
25V
C1855
R1857
100
2.2k
25V
-54
R1862
-53.6
10k
Q1854
1/2W
2SC2229-OY
-9.1
R1602
C1858
C1865
100k
330
5p
25V
500V
R1856
C1601
C1602
3.3k
4.7
100p
50V
500V
-0.4
-1
C1857
7p
57.7
500V
C1854
R1601
680p
1k
58.2
1/3W
57.9
Q1855
2SA949-OY
57.9
57.7
Q1602
u 1 6 3
57.7
Q1853
2SA1038S-RSE-TP
58.2
R1859
R1861
R1854
27k
100
220
1/2W
71
71
2
4
8
9
9
10
11
12
Q1910, 1911
Q1911
LIMITTER DETECT
DTC124ESA-TP
3.7
Q1910
DTC143TSA-TP
0
0
R1909
D1903
1SS133T-72
33k
0
R1904
R1922
3.3k
22k
Q1912
3.7
DTC124ESA-TP
Q1913
0
DTC124ESA-TP
R1932
10k
0
Q1912, 1913
LIMITTER DETECT
0
0.1
3
1
5
1
5
0
8
9
Q1901
2SA1038S-RSE-TP
14.9
14.9
R1931
1k
14.3
D1911
1SS133T-72
R1930
10k
R1936
5.6k
D1907
R1902
R1901
1SS133T-72
22k
22k
0
Q1914
DTC124ESA-TP
3.1
INVERTER
R1937
2.2k
C1860
R1863
100
3.9k
25V
1/3W
C1853
R1852
100p
100k
R1801
1k
1/3W
C1852
100p 500V
C1851
-0.8
4.7
50V
-0.4
-2
Q1851
R1851
HN4C06J
1k
57.9
1/3W
R1855
Q1851-1855
330
PRE DRIVE
m
57.9
57.7
c o
Q1852
2SA1038S-RSE-TP
58.2
.
R1853
220
STR-DA6400ES
2
8
9
9
13
14
CN1908
8P
1
4/8
2
-B
AM
3
GND
4
GND
5
+15V
BIAS
BOARD
6
-15V
CN1911
7
LIMITER
(Page 107)
8
PROTECT
2
4
9
8
2
9
9
CN1909
5P
AN
5
TEMP2
4
TEMP1
TEMPERATURE
3
GND
DETECTION
1
+7V
BOARD
CN1902
(Page 112)
CN1505
15P
TEMP 4/8
1
2
PROTECT
3
-15V
4
+15V
5
GND
AP
6
4/8
7
GND
8
SBL
CONNECTOR2
BOARD
9
GND
CN1206
10
GND
(Page 105)
11
SBR
12
GND
13
GND
14
C
15
GND

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