Schematic Diagram - Main Board (4/4) - Sony STR-K890 Service Manual

Q Q
4-14. SCHEMATIC DIAGRAM – MAIN BOARD (4/4) –
3 7 6 3 1 5 1 5 0
SUBWOOFER AUDIO OUT
J309
1P
CN505
4P
VIDEO
+15V 1
BOARD
O
GND 3
CNP203
-15V 4
(Page 35)
CNP913
9P
PROTECTOR 1
FRONT A RY 3
DIGITAL
SB/CTR/REAR RY 4
BOARD
HP CTRL 5
D
(4/5)
HP RY 6
CNP503
WOOFER RY 7
(Page 21)
T E
L 1 3 9 4 2 2 9 6 5 1 3
FRONT B RY 8
BRIDGEABLE RY 9
CN506
4P
DCAC
+7V 1
BOARD L
GND 3
CN2000
-7V 4
(Page 33)
CNP507
4P
w w w
DISPLAY BOARD
STR-K890
MAIN BOARD
3 (1/4)
(Page 24)
2 1 31 32
MAIN BOARD (4/4)
C471
4.7
50V
R469
R468
1k
100k
R470
47k
RY560
D560
C400
1SS355WTE-17
Q560
2200p C807
2SC3052EF-T1-LEF
47
RELAY DRIVE 25V
0
0.8 C808
47
25V
R802 R533
220 47k
1SR154-400TE-25
R532
10k
R910
D808
0.15
1SR154-400TE-25 1/2W
C822
47
35V
C818 C831
D805
0.1
0.47
1SR154-400TE-25
50V
D806
1SR154-400TE-25 C830
0.47
C832
50V
3300 D807
16V 1SR154-400TE-25
CNP912
3P
M B
x a o
y
DIGITAL BOARD
. CN108 (4/5) i
(Page 29) CNP505
(Page 21)
http://www.xiaoyu163.com
MAIN BOARD
5
(3/4)
(Page 26)
36 34 33 35
IC801
+7V REG
IC801
TA7807S
7 17
2 1
O I
G
C811
3
0.47
C810
1
0.47
-7 -16.5
G
2 O 3
I
D896
IC802
TA79007S
IC802
-7V REG
61
66
68
55
62
Q Q
64
3 7 6
69
C813
6800
71V
Q801
2SB734-T-34
C814
-20V REG
6800
71V
-21.9 -46
R803
R804 R830
4.7
10k
82
-22.5
C801 C802 C809
R806 47
47 0.1
22k 35V
35V 100V
WP101
SYSTEM
GND
CN915
5P
N
u 1 6 3
STANDBY BOARD
CNP802
.
(Page 31)
27 27
http://www.xiaoyu163.com
2 4
8 9 9
37 38
5 R1 (SIDE1)
4 R2 (SIDE2)
3
GND
3 1 5 1 5 0 8 9 2
2 R2 (SIDE2)
1
R1 (SIDE1)
D802
CNP801
D5SBA20-4003
5P
R824
C805
2.2k
RY801
0.22
100V
C806
0.22
D818
100V
1SS355WTE-17
0.2
0.8
Q809
2SC3052EF-T1-LEF
RELAY DRIVE
CNP802
6P
6
+R4
5 -R4
4 F2
3 GND
2 NC
1
F1
No mark:FM
m
c o
STR-K890
2
8 9 9
POWER
TRANSFORMER
J
T901
4 9 8 2 9 9
(Page 31)
POWER
TRANSFORMER
K
T901
(Page 31)