Schematic Diagram - A-Class Amp Board (2/2) - Sony STR-DA4400ES Service Manual

6-45. SCHEMATIC DIAGRAM - A-CLASS AMP Board (2/2) -

1 2
A-CLASS AMP BOARD (2/2)
A
LIMITTER DETECT
B
R1549
100k
C
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 73)
C SPOUT 3
C BIAS-
2
1
C BIAS+
G
1
1
2
A-CLASS
AMP
BOARD
(1/2)
(Page 70)
H
I
J
K
STR-DA4400ES
3 4 5
Q1902, 1903
C1805
R1807
R1812
100
10k 2.2k
25V
1/2W
Q1902
2SD774-T-34
C1815
R1905
R1908
Q1804
5p
470 2W
270 2W 2SC2229-OY
500V
R1806
3.3k
Q1903
2SD774-T-34
-1 -2
Q1801-1805
PRE DRIVE
HN4C06J
C1808
330
C1804 R1805
25V
680p 330
C1807
7p
500V
Q1805
2SA949-OY
2SA1038S-RSE-TP
Q1803
2SA1038S-RSE-TP
R1809 R1804 R1803
R1811
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
HN4C06J
C1608 C1604
680p R1605
330
50V 330
C1607
25V
7p
500V
Q1605
2SA949-OY
R1611
R1609 R1604
100
27k 220
1/2W
6 7 8
R1813
C1810
3.9k C1911
220
R1924
1/3W 10
16V
10k
16V
C1803
100p 4 3 2 1
5 6 7 8
R1927
10k
Q1801
R1925
20k
R1910 R1921
330k 20k
R1802 C1802
2
100k 100p
O G
500V 3 1
I
C1801
IC1904 TA78L05S
4.7
Q1802
50V
R1906 Q1901
22k LIMITTER DETECT
C1861
5p
500V
R1864
100k
1/2W
R1613 C1610
3.9k 220
1/3W 16V
C1855
100 R1857
2.2k
25V
R1862
10k
1/2W
Q1854
2SC2229-OY
R1602 C1858
C1865
330
100k
5p
25V 500V
R1856
C1601 3.3k
4.7
C1602
50V 100p 500V
C1857
7p
500V
C1854
R1601
680p
1k
Q1855
2SA949-OY
Q1602
2SA1038S-RSE-TP
Q1853
2SA1038S-RSE-TP
R1861 R1859 R1854
R1603
220 100 27k 220
1/2W
71 71
9 10 11 12
Q1910, 1911
Q1911
LIMITTER DETECT
DTC124ESA-TP
D1902
1SS133T-72 Q1910
DTC143TSA-TP
R1909 D1903
33k 1SS133T-72
Q1912
R1922
DTC124ESA-TP
3.3k
Q1912, 1913
LIMITTER DETECT
IC1902 Q1913
DTC124ESA-TP
R1932
LIMITTER
10k
C1912
0.1
IC1904
+5V REGULATOR
Q1901
2SA1038S-RSE-TP
R1931
1k
R1930
10k
R1936
5.6k
R1902
R1901
22k
22k
Q1914
DTC124ESA-TP
INVERTER
R1937
2.2k
C1860
R1863
220
3.9k
16V
1/3W
C1853
R1852
100p
100k
R1801
1k
C1852
100p 500V
C1851
4.7
50V
-1 -2
R1851
Q1851 1k
HN4C06J
R1855
330 Q1851-1855
PRE DRIVE
Q1852
2SA1038S-RSE-TP
R1853
220
STR-DA4400ES
13 14
R1904
22k
CN1908
8P
1 4/8
2 -B
P
3 GND
4 GND
5 +15V BIAS
BOARD
6 -15V
CN1911
7 LIMITER
(Page 79)
8 PROTECT
CN1909
5P
Q
5
TEMP2
4
TEMP1
TEMPERATURE
3 GND
DETECTION
1
+7V BOARD
CN1902
(Page 68)
CN1505
15P
TEMP 4/8
1
2 PROTECT
3 -15V
4 +15V
5 GND
6 4/8 N
7 GND
8 SBL
CONNECTOR2
BOARD
9 GND
CN1206
10 GND
(Page 67)
11 SBR
12 GND
13 GND
14 C
15 GND