Read Sony STR-DB1070 / STR-DB870 Service Manual online
19
19
Ver 1.1
STR-DB870/DB1070
6-5.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL Section –
CONTROL
Q302
C
(Page 15)
SW3, SW4
SW3
SW4
J301 (1/2)
Y
PBB-Y
Y
J301(2/2)
Y
OUTPUT
CIRCUIT
CIRCUIT
CONTROL S I/O SWITCH
IC751
O2-2
OUTPUT
CIRCUIT
CIRCUIT
INPUT
CIRCUIT
TV/SAT
CTRL S
CTRL S
STATUS IN
J754
VIDEO 1
CTRL S
OUT
J756
DVD/LD
CTRL S
OUT
J755
MONITOR
CTRL S
IN
J753
INH
BUFFER
Q752, 753
BUFFER
Q1702
REMOTE
CONTROL
RECEIVER
IC1701
I/O BUFFER
Q1701
D1701
CONTROL A1
II
J303
Q810
D1801
S1704
SHIFT
REGISTER
PARALLEL
DATA
OUTPUT
1
–
7, 9
–
15, 20
–
29
D1601 – 1619,
D1901 – 1905
LED DRIVE
IC1602
1, 70
–
37
2
–
23
FL1601
FLUORESCENT
INDICATOR
TUBE
F1
F2
HVO25
–
HVO59
HVO24
–
HVO3
P01 – P35
G1 – G22
FL DISPLAY DRIVE
IC1601
S1701
ON
OFF
SPEAKERS
S1702, 1703,
S1941 – 1945
(S1941:DB1070)
S1911 – 1918
S1901 – 1908
S1921 – 1925
S1801 – 1803,
S1931 – 1934
A
B
RV1901
(JOG DIAL)
A
B
FUNCTION
RV1801
A
B
RV1601
SYSTEM CONTROLLER
IC1703 (6/7)
134
AD3
135
AD4
136
AD5
11
C. JOG
12
C. JOG
13
F. JOG
14
F. JOG
15
V. JOG
16
V. JOG
66 SIRCS
41 M STSTUS
64 MBUS DVD
65 BUS VIDEO
63 MBUS TV
111
CLK
50
AUDIO SPLIT LED
112
DIN
113
LAT
114
CLR
62
POWER
17
SP. SW
132
AD1
133
AD2
86 A1 IN
87 A1 OUT
22
CLK
21
DATA
24
F. SW LAT
115
VOL IC LAT
39
LED CR
38
LED CE
LED CLR
LED LAT
19
CLR
18
STB
17
CLK
16
DATA
LED2
LED3
LED4
LED1
30 CLK
28 DIN
31 LAT
32 CL
FL4
FL1
FL3
FL2
FL4
FL1
FL3
FL2
14
4
15
11 10 9 6
13
12
3
5
1
2
VIDEO SELECT
IC303
11
O2-1
10
13
IN1
6
O3-1
7
O3-2
4
2
IN3
OUT1
BUFFER
Q750, 751
(US, Canadian)
(DB1070)
B
(Page 15)
DATA, CLK
R
(Page 17)
CLK, DATA, LAT
P
(Page 17)
CLK, DATA, LAT
J
(Page 16)
SCLK, SDAT, SLAT
CLK
DATA
FUNC LAT
VOL LAT
CLK
DATA
LAT
CLK
DATA
FUNC LAT
VOL LAT
CLK
DATA
LAT
CLK
DATA
LED CLK
LED DATA
COMPONENT
VIDEO
TV/SAT IN
COMPONENT
VIDEO
DVD/LD IN
PRR-Y
PBB-Y
PRR-Y
LINE AMP
IC301 (1/2)
LINE AMP
IC301 (2/2)
LINE AMP
IC302
INH
PBB-Y
PRR-Y
COMPONENT
VIDEO
MONITOR OUT
57 X1
58 X2
X1701
16.5MHz
LEVEL SHIFT
IC805
LEVEL SHIFT
IC804
AUDIO
SPILIT
SPILIT
LEVEL SHIFT
IC1610
LEVEL SHIFT
IC1603
MASTER
VOLUME
VOLUME
I
/ 1
• SIGNAL PATH
: VIDEO IN
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