Schematic Diagram - A Class Amp Board - Sony STR-DA1200ES Service Manual

6-28. SCHEMATIC DIAGRAM – A CLASS AMP Board –
R1753
220
Q1752
2SA1038S
R1755
180
Q1751-1755
PRE DRIVE
Q1751
C1751
2SC5169
R1751 4.7
1k 50V
C1752 R1752
100p 100k
Q1754
2SC2229
R1763 C1760
3.9k 220
1/3 16V
R1703
220
Q1702
2SA1038S
R1705
180
Q1701-1705
PRE DRIVE
Q1701
C1701
2SC5169
R1701 4.7
1k 50V
C1702 R1702
100p 100k
Q1704
2SC2229
R1713
3.9k
1/3
R1553
220
Q1552
2SA1038S
R1555
180
Q1551-1555
PRE DRIVE
Q1551
C1551
2SC5169
R1551 4.7
1k 50V
CNS1501
12P C1552 R1552
100p 100k
GND
SR
Q1554
GND
2SC2229
GND
SL
R1563 C1560
GND
3.9k 220
1/3 16V
GND
FRONT-R
GND
(Page 71)
R1503
GND 220
FRONT-L
Q1502
GND 2SA1038S
R1505
180
Q1501-1505
PRE DRIVE
Q1501
2SC5169
R1501 C1501
1k 4.7 50V
C1502 R1502
100p 100k
Q1504
2SC2229
R1513 C1510
3.9k 220
1/3 16V
STR-DA1200ES
R1754
R1761
220
Q1753 100
2SA1038S
Q1755
2SA949
C1754
680p C1757
7p
500V
C1758
330
25V
-1-2
C1765
5p
500V
C1753
100p
R1762
R1759
R1756 10k
27k
3.3k 1/2W R1764
1/2W
100k
1/2W
C1761
5p
C1755 500V
D1751
R1757 100
MTZJ-T
2.2k 25V
-72-6.2
R1704
R1711
220
100
Q1703
2SA1038S
Q1705
2SA949
C1704
680p C1707
7p
500V
C1708
330
25V
-1-2
C1715
5p
500V
C1703
100p
R1709
R1712
R1706 27k
10k
3.3k 1/2W
1/2W
R1714
100k
1/2W
C1711
C1705 5p
100 500V
D1701
25V
R1707 MTZJ-T
C1710
2.2k -72-6.2
220
16V
R1554 R1561
220 100
Q1553
2SA1038S
CNS1903
Q1555
SR BIAS+
2SA949
SR BIAS-
C1554
680p C1557
SR SPOUT
7p
500V
SL BIAS+
C1558 SL BIAS-
330
25V SL SPOUT
-1-2
FR BIAS+
C1565
5p
FR BIAS-
500V
C1553
FR SPOUT
100p
FL BIAS+
R1559
R1562
R1556 27k
10k FL BIAS-
3.3k 1/2W
1/2W
R1564
FL SPOUT
100k
1/2W
C1561
C1555 5p
100 500V
D1551
25V
R1557 MTZJ-T
2.2k -72-6.2
R1511
R1504
100
220
Q1503
2SA1038S
Q1505
2SA949
C1504
680p C1507
7p
500V
C1508
330
25V
-1-2
C1515
5p
500V
C1503
(Page 47)
100p
R1509
R1506 27k R1512
3.3k 1/2W 10k
1/2W R1514
100k
1/2W
C1505 C1511
100 5p
D1501
25V 500V
MTZJ-T
R1507
-72-6.2
2.2k
(Page 55)
R1603
220
Q1602
2SA1038S
R1605 C1604
180 680p
Q1601-1605
PRE DRIVE
-1-2
Q1601
C1601
2SC5169
R1601 4.7
1k 50V
R1606
C1602 R1602 3.3k
100p 100k
Q1604
2SC2229
R1607
R1613 C1610 2.2k
3.9k 220
1/3 16V
R1853
220
Q1853
2SA1038S
Q1852
2SA1038S
R1855 C1854
180 680p
Q1851-1855
PRE DRIVE
-1-2
Q1851
C1851
2SC5169
R1851 4.7
1k 50V
R1856
3.3k
C1852
100p R1852
CNS1502 100k
9P Q1854
2SC2229
GND
C
R1857
R1863 C1860 2.2k
GND
3.9k 220
1/3 16V
GND
SBR
GND
R1803
GND Q1803
12P 220
(Page 71)
2SA1038S
SBL
Q1802
GND
2SA1038S
R1805 C1804
180 680p
Q1801-1805
PRE DRIVE
-1-2
Q1801
2SC5169
C1801
R1801 4.7
(Page 53)
1k 50V
C1802 R1806
100p R1802 3.3k
100k
Q1804
2SC2229
R1807
R1813 C1810
2.2k
3.9k 220
1/3 16V
CNP1902
6P
TEMP(4/8)
GND
4/8
+15V
-15V
R1922 Q1911
3.3k DTC124ESA
PROTECT
Q1910
DTC143TSA
CNP1901
10P
LIMITER
R1904 R1549 Q1910,1911
22k 100k
PROTECT LIMITTER DETECT
-15V
+15V
GND
GND
D1907
1SS133T
-B
R1932
4/8
R1920 10k
1k
TEMP1
TEMP2
Q1913
DTC124ESA
R1931
1k
Q1912
DTC124ESA
Q1912,1913
LIMITTER DETECT
51 51
R1604
220
Q1603
R1611
2SA1038S
100
Q1605
2SA949
C1608
C1607
330
7p 500V
25V
C1615
5p
500V
C1603
100p
R1609
27k R1612
1/2W 10k
1/2W R1614
100k
1/2W
C1611
C1605 5p
100 D1601 500V
25V MTZJ-T
-72-6.2
R1861
R1854
100
220
Q1855
2SA949
C1857
7p
500V
C1858
330
25V
C1865
5p
500V
C1853
100p
R1859
R1862 R1864
27k
10k 100k
1/2W
1/2W 1/2W
C1861 CNS1904
5p 12P
C1855 500V
C BIAS+
100 D1851
25V MTZJ-T
C BIAS-
-72-6.2
C SPOUT
SBR BIAS+
SBR BIAS-
R1804 R1811
SBR SPOUT
220 100
SBL BIAS+
SBL BIAS-
(Page 53)
Q1805
SBL SPOUT
2SA949
+B
AGND
R1903
1
-B
C1808
C1807
330
7p 500V
25V
C1901
C1815
22
5p C1902
100V
500V 22
C1803 100V
100p
R1809 R1812
27k 10k
1/2W 1/2W R1814
100k
1/2W
C1811
C1805 5p
100 D1801 500V
25V MTZJ-T
-72-6.2
Q1901-1903
LIMITTER DETECT
R1901 D1903 R1909
22k 1SS133 33k
R1902 R1905
22k R1906 270 R1907
22k 1W 100k
Q1902
Q1903
2SD774
2SD774
Q1901
2SA1038S
R1908
150
1W
R1921 20k
R1925
R1910 330k
+5V REGULATOR 20k
IC1904
TA78L05S
I O
G
LIMITTER
D1901 IC1902
C1912 1SS133T C1911 NJM4565D
0.1 0.1
R1924
10k
R1927
10k
D1902
1SS133T
STR-DA1200ES