Read Sony STR-DB1070 / STR-DB870 Service Manual online
15
15
Ver 1.1
STR-DB870/DB1070
6-1.
BLOCK DIAGRAM – TUNER/VIDEO INPUT Section –
SECTION 6
DIAGRAMS
SW3, SW4
7
9
3
5
13
V3
V2. IN
TV
LD
V1. IN
10
4
14
6
2
15
1
SW2
SW3
SW1
SW4
SW5
V1.
OUT
M.
OUT
7
9
3
5
13
V3
V2. IN
TV
LD
V1. IN
10
4
14
6
2
15
1
SW2
SW3
SW1
SW4
SW5
V1.
OUT
M.
OUT
15
13
9
11
3
5
7
1
2
14
10
4
6
X1301
4.332MHz
ANALOG
SWITCH
SERIAL
INPUT
CONTROL
BUFFER
Q304,
Q305
D304
D303
D751
D750
X301
17.34MHz
X302
14MHz
L. P. F.
FL301
FL303
B
(Page 19)
DATA, CLK
FM
AM
10
L CH
12
R CH
6
FM IF OUT
9
FM DET OUT
1
CE
13
MUTING
2
DATA
3
CLOCK
14
TUNED
4
DO
15
STEREO
S LAT
MUTING
DATA
CLK
TUNED
DO
STEREO
4 MUX
13
14
2
RDAT
16
RLCK
XI
XO
RDS DECODER
IC1303
(AEP, UK)
FM/AM
TUNER UNIT
28 RDS DATA
RDS SIGNAL
RDS CLK
20 TUNER MUTE
25 TUNER STEREO
19 TUNER AUTO STOP
23 TUNER DATA IN
139
40 TUNER LAT
61
SYSTEM
CONTROLLER
IC1703
(1/7)
8
YOUT
6
COUT
7
VOUT
4
CIN
2
YIN
3
VIN
VIDEO BUFFER
IC305
27
YOUT
26
COUT
25
VOUT
15 EXD
16 XD
2
CIN
1
YIN
22
SCLK
23
SIN
24
CS
3
VIN
8
EXS
OSD DRIVER
IC307
COMPARATOR
IC306
8
1
2
9
10 3
2
12
13
6
5
4
6
5
(US, Canadian)
CLOCK
IC304 (3/3)
8
9
11
10
(EXCEPT US, Canadian)
CLOCK
IC304 (1/3)
CLK
DATA
34
LAT
P/N
105
106
107
29 VIDEO SW1
30 VIDEO SW2
31 VIDEO SW3
32 VIDEO SW4
33 VSYNC
SYSTEM
CONTROLLER
IC1703
(2/7)
J298 (1/2)
VIDEO 3
INPUT
VIDEO
VIDEO
TV/SAT IN VIDEO
DVD/LD IN VIDEO
IN VIDEO
OUT VIDEO
VIDEO 2
J305
J304
VIDEO 1
IN VIDEO
OUT VIDEO
J299
J752 (2/2)
J750 (1/2)
J750 (2/2)
J752 (1/2)
C
Y
C
Y
C
Y
C
Y
C
Y
C
Y
J751
J302
VIDEO SELECT
IC308
Y SWITCH
IC752
C SWITCH
IC750
A
(Page 16)
TU L OUT
FM 75
Ω
COAXIAL
AM
R-CH
• SIGNAL PATH
: TUNER
MUTING
STEREO
TUNED
DO
SLAT
VIDEO 3
INPUT
S-VIDEO
TV/SAT
S-VIDEO IN
DVD/LD
S-VIDEO IN
VIDEO 1
S-VIDEO IN
MONITOR
S-VIDEO OUT
MONITOR
OUT VIDEO
V1. OUT
V1. IN
V2. IN
V2. OUT
TV
LD
V3
M. OUT
SW5
SW1
SW2
SW3
SW4
BUFFER
: VIDEO IN
LEVEL SHIFT
IC310 (1/2)
SYNC SEPARATE
IC311
SYNC SEPARATE
IC309
VIDEO 1
S-VIDEO OUT
SW3
SW4
C
(Page 19)
LEVEL SHIFT
IC310 (2/2)
CLOCK
IC304 (2/3)
L. P. F.
L. P. F.
FL302
(DB870)
(DB1070)
LEVEL
SHIFT
IC312
IC312
(EXCEPT DB870/DB1070:US, Canadian)
1
CT301
OSD
CT303
OSD
CT302
OSD
• R-ch is omitted due to same as L-ch.
Ver 1.2
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