Printed Wiring Boards - Protector (Sb/Surr) Section; Schematic Diagram - Protector (Sb/Surr) Section - Sony STR-DA4400ES Service Manual

6-50. PRINTED WIRING BOARDS - PROTECTOR (SB/SURR) Section -

• See page 39 for Circuit Boards Location.
1 2
PROTECTOR (SURR) BOARD
A
JW1091
JW1092
JW1093
JW1094
(Page 78)
JW1095
AD
JW1096
BIAS BOARD
CN1705
CN1761
B
FOR
ADJUSTMENT
JW1097
JW1098
JW1099
JW1100
C
PROTECTOR (SB) BOARD
D
JW1060
JW1061
JW1062
V
POWER AMP
BOARD
CN1872
JW1063
(Page 72)
JW1064
JW1065
E
• Semiconductor
Location
Ref. No. Location
D1721 B-4
D1722 B-3
D1771 B-4
D1772 B-3
D1821 E-2
D1822 E-3
D1871 E-2
D1872 E-3
Q1722 A-3
Q1723 A-3
Q1724 B-3
Q1772 B-3
Q1773 B-3
Q1774 B-3
Q1822 E-3
Q1823 E-3
Q1824 E-3
Q1872 D-3
Q1873 D-3
Q1874 D-3
STR-DA4400ES
• : Uses unleaded solder.
3 4
CN1701
JW1001
JW1002
JW1005
R1733
D1722
C1723
C1773
11
(12)
1-876-808-
JW1059
CN1801
JW1058
JW1052
C1873
JW1053
CN1861
JW1054
JW1055
JW1056
JW1057
C1823

6-51. SCHEMATIC DIAGRAM - PROTECTOR (SB/SURR) Section -

1 2
5
PROTECTOR (SURR) BOARD
A
B
Z
POWER AMP
BOARD CN1701
14P
CN1703
BIAS+
(Page 72)
SR BIAS+ 1
BIAS+
SR BIAS+ 2
BIAS-
C SR BIAS- 3
BIAS-
SR BIAS- 4
SR +PTrE 5
Z
SR -PTrE 6
SR SPOUT 7
BIAS+
POWER
SL BIAS+ 8
AMP
BIAS+
SL BIAS+ 9
BOARD
BIAS-
CN1703
SL BIAS- 10
(Page 73) BIAS-
D
SL BIAS- 11
SL +PTrE 12
SL -PTrE 13
SL SPOUT 14
E
F
CN1861
4P
SBR +PTrE 1
BIAS BOARD
AE
CN1803 SBR -PTrE 2
(FOR ADJUSTMENT)
(Page 78) G
SBL +PTrE 3
SBL -PTrE 4
FOR
ADJUSTMENT
H
CN1801
14P
+15V 1
GND 2
11
DC 3
I
SHORT 4
(12)
1-876-810-
4/8 5
AE
LIMT 6
SBR BIAS+ 7
BIAS
SBR BIAS+ 8
BOARD
CN1803 SBR BIAS- 9
(Page 79)
SBR BIAS- 10
SBL BIAS+ 11
J
SBL BIAS+ 12
SBL BIAS- 13
SBL BIAS- 14
K
L
M
77 77
3 4 5 6
R1781
R1786
R1783
0
Q1772
R1775
C1772
2SA1038S-RSE-TP
4.7k
220p
0
Q1772-1774
-0.2
CURRENT DETECT
R1779
R1776
20k
6.2k
R1777
1.8k C1773 D1772
1SS133T-72
0.01
Q1773
2SA1038S-RSE-TP
R1778
0
15k
0 -0.3
C1774
R1780 R1782
1.5k 10
15k
50V
-59.4
R1725
C1722
4.7k
220p
0
0
R1726
Q1722
6.2k
-0.3
2SA1038S-RSE-TP
R1727
1.8k
R1729
R1728
15k 20k Q1724
Q1723 2SC1740S-QRT
6.2
2SA1038S-RSE-TP
-0.2 D1722
C1723
1SS133T-72
0 0.01
0
R1732
C1724
-59.2 R1730
15k
10
1.5k
50V
Q1722-1724
CURRENT DETECT
R1735
68k
PROTECTOR (SB) BOARD
Q1872-1874
CURRENT DTECT
R1883 47k
R1881
47k
R1879 R1877
20k
1.8k
R1886
R1884
220k
22k Q1874
2SC1740S-QRT
6.1
C1873
D1872
R1878
0
0.01
1SS133T-72 15k
R1882
R1880
15k
1.5k
C1874
-59.1
10
50V
R1885
68k
Q1822-1824
CURRENT DTECT
R1831
47k
R1834
22k
R1833
47k
R1829
R1836
20k
220k
6.1
C1823
D1822
Q1824
0.01
1SS133T-72
2SC1740S-QRT 0
C1824 R1832 R1830
10 15k
1.5k
50V
R1835
68k
STR-DA4400ES
7 8 9 10
47k
220k
47k
R1784
22k
6.2
Q1774
2SC1740S-QRT
CN1761
R1785
4P
68k
1 SR +PTrE
2 SR -PTrE
(FOR ADJUSTMENT)
3 SL +PTrE
4
SL -PTrE
R1731
47k
R1736 220k
R1733 47k
CN1704
14P
BIAS+
1 SR BIAS+
R1734
BIAS+
22k
2 SR BIAS+
BIAS-
3 SR BIAS-
BIAS-
4 SR BIAS-
BIAS+
5 SL BIAS+
AD
BIAS+
6 SL BIAS+
BIAS-
7 SL BIAS-
BIAS- BIAS
8 SL BIAS-
BOARD
CN1705
9 +15V
(Page 79)
10 GND
11 LIMT
12 4/8
13 SHORT
14 DC
CN1871
14P
1 SBR BIAS+
2 SBR BIAS+
3 SBR BIAS-
4 SBR BIAS-
5 SBR +PTrE
V
6 SBR -PTrE
7 SBR SPOUT
POWER
8 SBL BIAS+
AMP
SBL BIAS+ BOARD
9
CN1872
10 SBL BIAS-
(Page
11 SBL BIAS-
73)
12 SBL +PTrE
0 R1875
C1872
220p 4.7k 13 SBL -PTrE
0
14 SBL SPOUT
R1876
Q1872 6.2k
0 2SA1038S-RSE-TP
0
Q1873
2SA1038S-RSE-TP
0
0
C1822
220p
Q1822
2SA1038S-RSE-TP
R1825 R1826
0 4.7k 6.2k
0
R1827
1.8k
R1828
15k
0
Q1823
2SA1038S-RSE-TP
0
-59.1