Schematic Diagram - Main Board (3/4) - Sony STR-K990 Service Manual
Multichannel av receiver
Hide thumbs
Also See for STR-K990:
- Operating instructions manual (80 pages) ,
- Service manual (62 pages)
Table of Contents
Advertisement
Q Q
4-13. SCHEMATIC DIAGRAM – MAIN BOARD (3/4) –
3 7 6 3 1 5 1 5 0
MAIN BOARD
(3/4)
IC501
UPC2581V-S
1
2
3
4
5
R741
22k
C741
2.2
JW501 JW502
100V
5
C501
C507
R502
4.7
100p
68k
50V
8
R501
1k
2
MAIN
BOARD
6.5
(1/4)
Q692
(Page 25)
DTA124ESA-TP
-B SWITCH
6.5
T E
L
1 3 9 4 2 2 9 6 5 1 3
R698
10k
Q691
2SC1815GR-TPE2
-B SWITCH
R691
-46
-45.3
R692
-46
330
3
4
12
31 32
w w w
STR-K990
• See page 41 for IC Block Diagram.
15 14
16
17
18
19
IC501
IC B/D
POWER AMP
6
7
8
9
10
11
12
13
14
15
C505
C506
+V_C
100p
33p
500V
-V_C
C503
R503
C504
2.2k
3p
100
VEE
R505
10V
500V
68k
C733
C732
R733
10
10
R732
1
100V
100V
1
D691
1SS355WTE-17
R696
47k
C691
R695
10k
0.1
R690
-5.5
220k
D690
UDZSTE-1730B
8
7
6
5
IC691
NJM4565M(TE2)
R693
IC691
10k
PROTECT DET
1
2
3
4
R699
470k
R694
10k
33
35
34
x
a o
y
.
i
http://www.xiaoyu163.com
20
BOOSTER
C517
Q503
MN2488-OPY-MK
R514
47p
33
500V
0.1
B
R511
R510
Q501
2.2k
82k
46
2SA1115TP-EF
C
1.2
LIMITER
0.5
0.1
E
Q505
2SA1163L-TE85L
-1
Q502
CURRENT DETECT
R517
2SC3623ATP-LK
10
0.5
R520
C519
0.1
LIMITER
220p
4.7k
-0.5
R516
0.22
-0.1
C510
47
C511
25V
0.022
-0.1
-1
R513
560
R521
R573
R522
6.2k
1.5k
47k
-1
E
R524
15k
-46
R515
C
33
-0.1
-0.1
0
B
C516
47p
Q504
MP1620-OPY-MK
-46
500V
R525
68k
Q
Q
3
7
6
MAIN BOARD
5
(4/4)
(Page 28)
u 1 6 3
27
27
http://www.xiaoyu163.com
2
4
8
9
9
MAIN BOARD
(2/4)
4
(Page 26)
21
22
23
24
D841
UDZSTE-173.0B
R843
0
C842
R840
6.8k
47
25V
R844
22k
R555
4.7k
R518
L501
R529
R556
47k
1.7uH
C529
D529
4.7
10k
0.01
R539
1SS355WTE-17
100k
D540
6.5
C541
R540
1SS355WTE-17
0.01
22k
0
C540
R546
R557
10
15k
15k
50V
D505
Q540
1SS355WTE-17
2SC3052EF-T1-LEF
AF POWER
PROTECT
Q506
2SA1163L-TE85L
CURRENT DETECT
3
1
5
1
5
0
8
9
2
R585
4.7k
R586
47k
VACS-CTRL
m
c o
.
STR-K990
2
8
9
9
18
25
27 26
28
29
30
R635
82
RY610
D611
1SS355WTE-17
TM604
2P
TM604
C
4
0.3
–
R633
0.8
1k
68
3
SPEAKERS
CENTER
(INPEDANCE USE
2
6-16 Ω )
C
1
+
Q612
2SC3052EF-T1-LEF
RELAY DRIVE
4
9
8
2
9
9
No mark:FM
36
37 38
Hide quick links:
Advertisement
Table of Contents
