Schematic Diagram − A Class Section (2/2) - Sony STR-DB798 Service Manual

6-30. SCHEMATIC DIAGRAM – A CLASS Section (2/2) –
GND
-B
+B
NF
GND
SBL
(Page 42) BIAS-
BIAS+
STR-DB798
(2/2)
Q2705
2SA949
R2714
120 BIAS
Q2704 Q2706
2SA992 2SC2229
R2713
470 BIAS BIAS
C2707
4p 500V
C2706
4p
500V
R2711
100k
1
2
3
4
R2705
Q2701
R2704 4.7k
2SC5169
1.2k
PRE DRIVE 5
C2711
100p 100V Q2703
2SC1740
PRE DRIVE
R2703
330
R2702 R2706
56k 1.2k
C2702
R2701 C2701
47
1k 220p 100V C2808 C2807
63V
0.0022 0.0022
100V 100V
CN2005
4P
C2708
R2716
220p
18k
R2715 100V
120
R2719
150
D2701
MTZJ5.6B
CN2004
4P
C2705
330
25V
R2712
100k
R2710
56k
CN2003
4P
R2709
2.2k
C2704
220
R2708
16V
3.3k
R2707
560
(Page 33)
43 43
CN18
4P
EB18
(CHASSIS)
CN28
4P
EB28
(CHASSIS)
CN38
4P
EB38
(CHASSIS)
CN168 CN178
6P 6P
STR-DB798
(Page 39)