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

4-14. SCHEMATIC DIAGRAM – MAIN BOARD (4/4) –
SUBWOOFER AUDIO OUT
J309
1P
CN505
VIDEO
+15V 1
BOARD
O
GND 3
CNP203
-15V 4
(Page 35)
CNP913
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)
FRONT B RY 8
BRIDGEABLE RY 9
CN506
DCAC
+7V 1
BOARD
L
GND 3
CN2000
-7V 4
(Page 33)
CNP507
STR-K890
MAIN BOARD
(1/4)
3
(Page 24)
2 1 31 32
(4/4)
MAIN BOARD
C471
4.7
50V
R469 R468
1k
100k
R470
47k
RY560
D560
C400
1SS355WTE-17
Q560
2200p
2SC3052EF-T1-LEF
RELAY DRIVE
0
0.8
R802 R533
4P
220 47k
R532
10k
9P
4P
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
4P
CNP912
3P
M B
DISPLAY BOARD DIGITAL BOARD
CN108 (4/5)
(Page 29) CNP505
(Page 21)
MAIN BOARD
5
(3/4)
(Page 26)
36 34 33 35
IC801
+7V REG
IC801
TA7807S
7 17
2 O I 1
G
C807
C811
47 3
0.47
25V
C808
C810
1
47
0.47
25V -7 -16.5
G
2 O 3
I
D896
1SR154-400TE-25
IC802
TA79007S
IC802
-7V REG
61
66
68
55
62
64
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
C802 C809
C801
R806 47
47 0.1
22k 35V
35V 100V
WP101
SYSTEM
GND
CN915
5P
N
STANDBY BOARD
CNP802
(Page 31)
27 27
37 38
5 R1 (SIDE1)
4 R2 (SIDE2)
3
GND
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
STR-K890
POWER
TRANSFORMER
J
T901
(Page 31)
POWER
TRANSFORMER
K
T901
(Page 31)