Printed Wiring Boards - H.p/Muting/Power/Sp/Video 3 Boards - Sony STR-DB1070 - Fm Stereo/fm-am Receiver Service Manual

STR-DB870/DB1070
5-21. PRINTED WIRING BOARDS – H.P/MUTING/POWER/SP/VIDEO 3 Boards – •
PRE OUT
J701 J403
(DB870) SUB WOOFER CENTER
J401
(DB1070)
SUB WOOFER SURROUND BACK
L R
SP BOARD
R733 R633
C603 C653 C553
–1 –2 –1 –2
C503
RY810 RY809
POWER BOARD
11
X
DISP
BOARD
CN1602
(Page 32)
1
DISPLAY
DIMMER
J402
TM502
SURROUND FRONT
FRONT
L R L R
SPEAKERS
IMPEDANCE USE 4-16
+
–
C436
CN502
C421
11
RY802
C453
–2
–1 –2
C403
–1
1
JW110 JW111
C431
R431
R821
(AEP, UK, E, CH)
RY808
JW150
R834
I
MAIN
BOARD
CN805
(Page 26)
I/1
3 1
S1702 – 1704
S1701
SPEAKERS
OFF T ON
11
(11)
1-681-101-
See page 14 for Circuit Boards Location.
+
–
MUTING BOARD
R1803
D1801
C471
R481
JW102
D1801, S1802
AUDIO SPLIT
S1802
JW103 C481
AEP, UK,
E, CH
CN403
4 1
R1802
R1801
CP401
11
S1803
(11)
1-681-105-
MUTING
T
MAIN
BOARD
CN803
(Page 26)
VIDEO 3 BOARD
(CHASSIS)
R L
AUDIO
J298
34 34
(Page 32)
DISP BOARD
Y
CN1603
CN1801
(CHASSIS)
8 1
JW63
S1801 – 1803
JW62
3 1
MAIN BOARD
CN801
(Page 26)
RV1801
ROTARY ENCODER
FUNCTION
RV1801
JW64 JW65
INPUT MODE
S1801
11
(11)
1-681-100-
(Page 24) (Page 24)
VIDEO AU S-VIDEO
BOARD BOARD
CN202 CN753
K J
7 1
11
(11)
VIDEO
S-VIDEO
J299
VIDEO 3 INPUT
H. P BOARD
EB749
4 3
5
S
6 5 2 1
J749
1
PHONES
CN749
7 11
(11)
1-681-103-