Schematic Diagram - Dcac Board, Video3 Board - Sony STR-K990 Service Manual

STR-K990
Q Q
4-20. SCHEMATIC DIAGRAM – DCAC BOARD, VIDEO3 BOARD –
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DCAC BOARD
MAIN
CN2000
BOARD
5P
CL2004
(4/4)
+7V 1
CL2005
CN506
L
2
+/-7V_GND
(Page 28)
CL2006
-7V 3
CL2007
DISPLAY R
DCAC_OUT 4
BOARD
CNP106
(Page 30)
JW2001
T E
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w w w
STR-K990
C2005
33p
C2002
1
50V
R2005
1M
R2017
C2006
2.2k
1
50V
8 7 6 5
R2003
10k
C2003 R2001
C2011
0.033 10k
0.022
50V
IC2000
1 2 3 4
C2012 R2006 AMP
0.022 1k
JW2000
C2013
D2014
1 R2008
1SS355TE-17 50V 560k
R2007
10k
R2015
C2008
33k
56p
R2010
10k
C2014 D2013
R2016
0.47
15k 1SS355TE-17
50V
C2010
0.033
x a o
. i
http://www.xiaoyu163.com
2
1
3
R2000
1k
J2000
R2019 AUTO CAL MIC
2.2k
R2018
C2018
VIDEO 3
1.2k 0.1
BOARD
C2001
100p
Q Q
3 7 6
No mark:FM
u 1 6 3
y
34 34
http://www.xiaoyu163.com
2 4
8 9 9
J298
VIDEO3 IN/
PORTABLE AV IN
AUDIO
R L VIDEO
R L V
CN201
R298
1k
1 R-CH
C298
2 GND
R299
220p
1k
3 L-CH
C299
220p
4 GND
5 VIDEO
C294 C293
0.1
0.1
CN202
(CHASSIS)
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m
c o
.
2
8 9 9
MAIN
5P
BOARD
(1/4)
P
CNP503
(Page 25)
Q
VIDEO
BOARD
CNP202
(Page 36)
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