Schematic Diagram - A Class Amp Board (2/2) - Sony STR-DA4300ES Service Manual

6-39. SCHEMATIC DIAGRAM – A CLASS AMP Board (2/2) –
1 2
A CLASS AMP BOARD (2/2)
A
Q1902, 1903
LIMITTER DETECT
B
R1549
100k
C
2SD774-T-34
D R1907
100k
C1902
E
22
100V
CN1906
12P
C1901
22
-B
12
100V
AGND 11
+B 10
R1903 10
SBLSPOUT 9
S
F
SBL BIAS-
8
SBL BIAS+ 7
POWER
SBR SPOUT 6
AMP
BOARD SBR BIAS- 5
CN1904
SBR BIAS+ 4
(Page 65)
C SPOUT
3
C BIAS- 2
C BIAS+ 1
G
1
1
2
A CLASS
AMP
BOARD
(1/2)
(Page 62)
H
I
J
K
STR-DA4300ES
3 4 5 6
C1805
R1807
R1812
100
10k 2.2k
25V
1/2W
Q1902
2SD774-T-34
R1908 R1905
C1815
330
220
Q1804
5p
2W
2W 2SC2229-OY
500V
R1806
3.3k
Q1903
-1 -2
Q1801-1805
Q1801
PRE DRIVE
2SC5169-FG
C1808
330
C1804 R1805
25V
680p
180
C1807
7p
500V
Q1805 Q1802
2SA949-OY
2SA1038S-RSE-TP
Q1803
2SA1038S-RSE-TP
R1809 R1804
R1811 R1803
27k 220 220
100
1/2W
C1611
5p
500V
R1614 C1603
100k 100p
1/2W
Q1601-1605
PRE DRIVE
R1607
C1605
2.2k
R1612
100
10k
25V
1/2W
Q1604
2SC2229-OY
R1606
3.3k
C1615
5p
500V
-1 -2
Q1601
2SC5169-FG
C1608 C1604
R1605
680p
330
50V 180
C1607
25V
7p
500V
Q1605
2SA1038S-RSE-TP
2SA949-OY
R1611
R1609 R1604 R1603
100
27k 220 220
1/2W
7 8 9
R1813
C1810
3.9k C1911
220
R1924
1/3W 10
16V
10k
16V
D1902
1SS133T-72
C1803
100p 4 3 2 1
5 6 7 8 IC1902
R1927
10k
R1925
24k
C1912
R1910 R1921
0.1
330k 20k
IC1904
C1802
R1802
2
100k 100p
+5V REGULATOR
O G
1 I 3
C1801
IC1904 PQ050ES1MXPQ
4.7
50V
R1906
Q1901
22k
LIMITTER DETECT
C1861
5p
500V
R1864
100k
1/2W
C1610 R1613
220 3.9k
16V
1/3W
C1855
100 R1857
2.2k
25V
R1862
10k
1/2W
Q1854
2SC2229-OY
R1602 C1858
C1865
100k 330
5p C1853
25V 500V
R1856
C1601 3.3k
4.7 C1602
100p
50V
-1 -2
C1857
7p
500V
C1854 R1855
R1601
680p
1k
Q1855
2SA949-OY
Q1602
Q1853
2SA1038S-RSE-TP
R1859
R1861 R1854
100
27k 220
1/2W
63 63
10 11 12
Q1910, 1911
Q1911
LIMITTER DETECT
DTC124ESA-TP
Q1910
DTC143TSA-TP
R1909 D1903
33k 1SS133T-72
Q1912
R1922 R1904
DTC124ESA-TP
3.3k 22k
Q1912, 1913
LIMITTER DETECT
Q1913
DTC124ESA-TP
R1932
LIMITTER
10k
Q1901
2SA1038S-RSE-TP
R1931
1k
R1930
10k
R1936
10
R1902
R1901
22k
22k
Q1914
DTC124ESA-TP
INVERTER
R1937
2.2k
C1860
R1863
220
3.9k
16V
1/3W
R1852
100p
100k
R1801
1k
C1852
100p
C1851
4.7
50V
R1851
Q1851
1k
2SC5169-FG
Q1851-1855
180
PRE DRIVE
Q1852
2SA1038S-RSE-TP
R1853
220
STR-DA4300ES
13 14
CN1908
8P
1 4/8
2 -B
3 GND
P
4 GND
5 +7V BIAS
BOARD
6 -7V
CN1911
7 LIMITER
(Page 71)
8 PROTECT
CN1909
5P
Q
5
TEMP2
4
TEMP1
TEMPERATURE
3 GND
DETECTION
1
+7V BOARD
CN1902
(Page 60)
CN1505
15P
1 PROTECT
2 TEMP 4/8
3 -7V
4 +7V
5 GND
6 4/8
N
7 GND
8 SBL CONNECTOR 4
BOARD
9 GND
CN1207
10 GND
(Page 59)
11 SBR
12 GND
13 GND
14 C
15 GND