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

Q Q
3 7 6 3 1 5 1 5 0

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