Schematic Diagram - Protector (F-C) Board - Sony STR-DA4300ES Service Manual

6-43. SCHEMATIC DIAGRAM – PROTECTOR (F-C) Board –
1 2
PROTECTOR (F-C) BOARD
A
B
CN1571
7P
FR BIAS+ 1
FR BIAS+ 2
Y
FR BIAS- 3
FR BIAS- 4
POWER
C
FR +PTrE 5
AMP
BOARD
FR -PTrE 6
CN1572
FR SPOUT 7
(Page 65)
CN1521
14P
FL BIAS- 1
FL BIAS+ 2
FL BIAS+ 3
FL BIAS- 4
D
FL +PTrE 5
W
FL -PTrE 6
POWER FL SPOUT 7
AMP
C BIAS+ 8
BOARD
C BIAS+ 9
CN1510
(Page 65) C BIAS- 10
C BIAS- 11
C +PTrE 12
E
C -PTrE 13
C SPOUT 14
F
G
H
I
STR-DA4300ES
3 4 5
Q1572
R1575
C1572
2SA1038S-RSE-TP
4.7k
220p
R1576 R1577
6.2k 1.8k
BIAS+
BIAS+
Q1573
BIAS-
2SA1038S-RSE-TP
R1578
15k
BIAS-
R1585
68k
BIAS-
BIAS+
BIAS+
BIAS-
R1525 Q1522
C1522
4.7k 2SA1038S-RSE-TP
220p
BIAS+
BIAS+
R1527
BIAS-
R1526
1.8k
6.2k
BIAS-
R1528
15k
Q1523
2SA1038S-RSE-TP
R1535
68k
R1625
4.7k C1622
220p
Q1622
2SA1038S-RSE-TP
R1626 R1627
6.2k
1.8k
Q1623 R1628
2SA1038S-RSE-TP 15k
R1635
68k
6 7 8
Q1572-1574
CURRENT DETECT
R1581
47k
R1586
220k
R1579
D1572
20k
1SS133T-72
Q1574
C1573
2SC1740S-QRT
0.01
R1582
C1574
R1580
10
15k
1.5k
50V
R1531
47k
R1536
220k
Q1522-1524
CURRENT DETECT
R1533
47k
Q1524
2SC1740S-QRT
R1529
D1522
R1534
20k
1SS133T-72
22k
C1523
0.01 C1524
R1532
15k 10
50V
R1530
1.5k
R1631 47k
R1636 220k
Q1622-1624
CURRENT DETECT
R1629
R1633
20k
47k
R1634
22k
D1622
C1623
1SS133T-72
0.01
C1624
Q1624
R1632
10
R1630
15k 2SC1740S-QRT
50V
1.5k
67 67
9 10 11
R1583
R1584
47k
22k
CN1561
4P
1 FR +PTrE
2 FR -PTrE
(FOR ADJUSTMENT)
3 FL +PTrE
4 FL -PTrE
CN1501
10P
BIAS+
1 FR BIAS+
BIAS+
2 FR BIAS+
BIAS-
3 FR BIAS-
BIAS-
4 FR BIAS-
AC
5 DC
6 SHORT
BIAS
7 4/8 BOARD
CN1512
8 LIMT
(Page 71)
9 GND
10 +7V
CN1503
8P
BIAS+
1 FL BIAS+
BIAS+
2 FL BIAS+
BIAS-
3 FL BIAS- AB
BIAS-
4 FL BIAS-
BIAS+
C BIAS+ BIAS
5
BIAS+
BOARD
C BIAS+
6
BIAS- CN1513
7 C BIAS-
(Page 71)
BIAS-
C BIAS-
8
CN1611
4P
1 C +PTrE
2 C -PTrE
(FOR ADJUSTMENT)
3 NC
NC
4
STR-DA4300ES
12