Schematic Diagram - Main Board (2/4) - Sony STR-K995 Service Manual

Q Q
4-13. SCHEMATIC DIAGRAM – MAIN BOARD (2/4) –
3 7 6 3 1 5 1 5 0
1 2 3
MAIN BOARD (2/4)
A
IC B/D
IC701
µPC2581V-S
1 2 3 4
B
R744
C701 C744 C755
4.7 22k 33p
2.2
50V R701 500V
100V
1k
6
C707 R702
100p 68k
C751
4.7 C757 R752
C R751 100p 68k
50V
1k
7
R753
2.2k
C753
100
10V
D
1
MAIN
BOARD
(1/4)
(Page 26)
E
IC601
µPC2581V-S
1 2 3 4
C651 R743
C743 C605
4.7 22k
2.2 33p
R651
50V 500V
1k 100V
9
F
C657
R652
100p 68k
50V
C601
C607
4.7 R602
100p
68k
50V
50V
T E 10
L 1 3 9 4 2 2 9 6 5 1 3
R601
1k
R603
2.2k
G
C603
100
10V
H
I
J
14
K
w w w
STR-K995
• See page 43 for IC Block Diagrams.
4 5 6 7 8
IC701
POWER AMP Q701
R714
2SA1115TP-EF
33
LIMITER
1.2 R710 R711
2.2k 82k
0.5
Q702
-1 2SC3623ATP-LK
5 6 7 8 9 10 11 12 13 14 15
0.5 LIMITER
0
C710
47
-1 R713
25V
C756 C706 C705 560
+V_L
100p 100p 33p
500V
-V_L
R715
33
C754 C704
3p 3p
500V 500V
C716
47p
R704 500V
68k
Q652
R754
68k R703
2SC3623ATP-LK
2.2k
LIMITER
C703 -1 R663
100
560
10V -0.1
C660
47
25V 0.6
-V_R
-1
+V_R 0.6
R661
R660
2.2k 82k
IC601 0.2
IC B/D
POWER AMP
Q651
2SA1115TP-EF
LIMITER
5 6 7 8 9 10 11 12 13 14 15 C666
500V
Q601
2SA1115TP-EF
LIMITER
C606 C656 C655 +V_SL
100p 100p 33p
500V
-V_SL
R610
1.2
0.5
-1
C604 C654 C610 0.5
3p 3p
47
500V 500V 25V -0.6
R654 68k
-1
R604
68k R653
2.2k
Q602
C653 2SC3623ATP-LK
100 LIMITER
10V
-V_SR
C620
47p
+V_SR 500V
Q752
2SC3623ATP-LK
LIMITER
-1
C760
-0.5
47
25V
0.5
-1
0.5
R760
2.2k
1.1
Q751
2SA1115TP-EF
LIMITER
15 16 17 18 19
x a o
y
. i
http://www.xiaoyu163.com
9 10 11 12
BOOSTER
C717 Q703 MN2488-OPY-MK
47p
R719 C720
500V
0.1 220p
4.7k 1.2
R740 C742
B
0.01
Q705 22k
0.1
2SA1163L-TE85L
46
C CURRENT DETECT
D740
1SS355WTE-17
0
1.2 R748 R747
D705
R722 15k
E 15k
R716 0.22 1.5k R724
1SS355WTE-17
R721 15k
6.2k
JL001
0 C711
R739
0.022
100k
Q704 MP1620-OPY-MK 0
R729
-1 C729 D729
Q706 R717 10k
0.01
E 2SA1163L-TE85L 1SS355WTE-17
-45 10 25V
R725
CURRENT DETECT
-46
68k
C
-0.1
Q655 R638 R667
B
68k 10 R723
2SA1163L-TE85L 47k
-46
CURRENT DETECT
0.1
C661
0.022
C669 Q654
MP1620-OPY-MK
R665
47p
33 -1.3
500V -0.1
B
R673
47k
-46
C
Q656
0.1
2SA1163L-TE85L C642
E R640
0.01 1SS355WTE-17
22k
CURRENT DETECT -0.1
R671
R666 0.22
6.2k
0.1 D665
R648 R677
R674
1SS355WTE-17 15k 15k
15k
R669 C670
4.7k 220p
0.1 R668 4.7
R664
33 1.2 L651
R623
1.7uH
E 47k
R620 C619 1.2
46 4.7k 220p
C 0
0.1
R621
B 6.2k Q605
0.3
2SA1163L-TE85L
R622
47p
1.5k
CURRENT DETECT
Q653 MN2488-OPY-MK
R680
C621 22k
Q603 MN2488-OPY-MK
R614 47p
33
500V 0.1
C681
R681
B 0.01
R624 15k
15k
R611
46
2.2k 82k
C D605
L601 1SS355WTE-17
1.2 SR-CH 1.7uH
E
Q606
2SA1163L-TE85L
R616 0.22 R618
Q Q 4.7
CURRENT DETECT 0.1
3 7 6
-1
R613
560
C611
R617
0 0.022
Q604 MP1620-OPY-MK 10
R615
R625
33
-1 68k
E
-46
C
L751
-0.1
Q755 R775 1.7uH
B
2SA1163L-TE85L 68k
C767
CURRENT DETECT
-45
47p R768
500V 4.7
Q754 MP1620-OPY-MK 0.1
C752
R750
0.01
R765 -0.1 22k
R763
33
B
560 -1.2
D765
R758
-46 R778 1SS355WTE-17 15k
15k
C
C749
-1 Q756
R772
E 0.01
R749
2SA1163L-TE85L 1.5k 25V
10k
CURRENT DETECT -0.7
R771
R766 0.22
6.2k
0
R761
82k
R773
47k
C770
R769
4.7k 220p
0.1
C761 R767
R764 0.022 10
33
0.1
E
46
C
C766
47p
500V -0.2
B
Q753 MN2488-OPY-MK
BOOSTER
MAIN BOARD
(3/4)
4
(Page 28)
u 1 6 3
27 27
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2 4
8 9 9
13 14 15 16 17
R794
680
1W
R792
680
RY701 1W
6.5
Q740
0
2SC3052EF-T1-LEF
AF POWER PROTECT
C740 R746 R745
10 47k 4.7k
50V
L701 1.7uH
R718 4.7
D710
Q710
1SS355TE-17
2SC3052EF-T1-LEF
RELAY DRIVE
0.2
R734
0.8
82
R731
2.2k
Q793
2SC3052EF-T1-LEF
PROTECT SW
C791
-46
220
4.7k
R675 0.1 10V 0.1
Q640
Q795
2SC3052EF-T1-LEF
R676 47k 2SA1163L-TE85L
R790
AF POWER PROTECT
PROTECT SW 100k
D640 6.5
0 Q723
R770
100k 2SC3052EF-T1-LEF
C640 PROTECT SW
Q725
10
50V 2SA1163L-TE85L 0.1 C721 0.1
220
PROTECT SW 10V
-46
D733
R780
10k R735 1SS355WTE-17
6.8k
D722
3.3
R655 1SS355WTE-17
Q722
4.7k -45.7
2SC3052EF-T1-LEF
PROTECT SW
Q680 D721 R737 C722
R656 1SS355WTE-17 10
2SC3052EF-T1-LEF 39k -46
47k 50V
AF POWER PROTECT
D680 6.5
1SS355WTE-17
0
C680
R657
15k 10
50V
R736
1k
R634
RY601
82
D610
0.2
R631
3 1 5 1 5 1SS355WTE-17 0 8 9
1k
0.8 68
Q610
2SC3052EF-T1-LEF
RELAY DRIVE
R755
4.7k
Q750
2SC3052EF-T1-LEF
47k
R756
AF POWER PROTECT
D750
6.5
R738 RY710
1SS355WTE-17
82
0
D701
R757 C750 16.5
1SS355WTE-17
15k 10 R632
50V 2.2k
0.2 64
R759 Q611
100k
2SC3052EF-T1-LEF
RELAY DRIVE
D749
1SS355WTE-17
21 22 23 20 24 25 26 27 28
m
c o
.
STR-K995
2
8 9 9
18 19 20 21
CN792
5P
55
1 HPHONE DET
3 R-CH
I
62 4 GND
HEADPHONE
5 L-CH
R791
BOARD
2.2k
CNP790
66
(Page 37)
0.8
RY791
D791
0.2
1SS355WTE-17
Q790
R793
2SC3052EF-T1-LEF
82
RELAY DRIVE
3.3
3.3
61
D732
1SS355WTE-17
TB001
8P
R(+) L(+)
+ +
FRONT L FRONT
R
L(-)
A R(-) A
– –
SR(+) + + SL(+)
2 4 9 8 2 9 9
SURROUND R L SURROUND
SR(-) SL(-)
– –
SPEAKERS
(IMPEDANCE USE6-16 Ω )
TM602
+
L
–
FRONT B
+
R
–
No mark:FM
29 30