Sony STR-DB1070 Service Manual - Page 25

Schematic Diagram – S-video/video Au Boards

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Page 25 highlights

5-12. SCHEMATIC DIAGRAM - S-VIDEO/VIDEO AU Boards - • See page 38 for IC Block Diagrams. STR-DB870/DB1070 J753 MONITOR CTRL S IN J754 TV/SAT CTRL S STATUS IN J755 DVD/LD CTRL S OUT J756 VIDEO 1 CTRL S OUT (US,CND) (CHASSIS) J751 Y MONITOR S-VIDEO OUT C TV/SAT Y S-VIDEO IN C J750 DVD/LD Y S-VIDEO IN C R750 1k C768 470p C765 470p GND R751 1k R752 1k CONTROL S I/O SWITCH IC751 NJM-2145D- VCC R753 1k R772 100 Q750,751 BUFFER Q750 BA1A4M Q751 BN1A4M R764 4.7k R765 10k C766 47 16V C761 2200p C750 47p C751 47p (DB870) R762 75 R763 75 C764 0.1 JW751 JW750 (DB870) R754 75 R755 75 R756 75 R757 75 C758 10 50V C755 0.1 C759 10 50V C756 0.1 OUT1 INH1 IN4 INH2 IN3 IN1 IN2 NC R769 10k O3-1 O2-1 O3-2 O2-2 O3-3 O2-3 R768 6.8k R766 6.8k Q752,753 BUFFER Q752 BN1A4M R767 10k R773 10k Q753 BN1A4M R774 100 C770 10 50V C772 0.1 C SWITCH IC750 NJM-2296D- (CHASSIS) C754 2200p (CHASSIS) C762 2200p Y S-VIDEO OUT C J752 VIDEO 1 Y S-VIDEO IN C C752 47p C753 47p R758 75 R759 75 R760 75 R761 75 C760 10 50V C757 0.1 C767 0.1 C763 0.1 DB870:CND /DB1070 * CN751 19P (US,CND) 14P (DB1070:AEP,UK,E,CH) 10P (DB870:AEP,UK) (US,CND) CN751 * MBUS-STATUS-OUT MBUS-TV MBUS-DVD MBUS-V1 SIRCS OUT MONITOR-Y/OUT MONITOR-C/OUT MONITOR-Y/IN MONITOR-C/IN VIDEO3 SW4 SW3 SW2 SW1 GND GND +5V -5V +5V(BACK UP) (Page 23) R770 R771 75 75 Y SWITCH IC752 NJM-2296D- D750 1SS133T C769 0.1 D751 1SS133T VIDEO3(C) VIDEO3(Y) VIDEO3 GND CN753 4P (Page 35) G1 (CHASSIS) C201 2200p J201 6P L TV/SAT AUDIO IN R R201 1k A1 A2 R251 1k L DVD/LD AUDIO IN R L R202 1k A3 A4 R252 1k R203 2.2k A5 AUDIO OUT R A6 R253 2.2k VIDEO 2 AUDIO IN J202 6P L R L AUDIO OUT R VIDEO 1 L AUDIO IN R R204 1k A7 A8 R254 1k R205 2.2k A9 R255 2.2k R206 1k A10 A11 R256 1k A12 G2 (CHASSIS) C202 2200p C211 2200p VDD TV/DBS VSS L VIDEO SELECT IC201 TC9273-014 R C212 2200p A2 A4 A6 A8 A10 A12 DVD/LD V2 OUT A1 A3 A5 A7 A9 A11 VIDEO2 COM V1 OUT VIDEO1 NC VIDEO3 NC COM GND LAT C213 100p R211 1k CLK DAT CN201 9P LOUT GND ROUT 15V -15V LAT DATA CLK (Page 29) CN202 3P L VIDEO3 R (Page 35) 25 25

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STR-DB870/DB1070
25
25
5-12. SCHEMATIC
DIAGRAM
– S-VIDEO/VIDEO AU Boards –
•
See page 38 for IC Block Diagrams.
CN201
C213
C211
R211
CN202
C212
C201
G1
R201
R202
R251
R252
R203
R253
R204
R254
R255
R206
R205
R256
C202
G2
J202
CN753
D750
C769
C772
R771
R770
R774
R773
R767
R766
R768
R769
C765
C768
Q750
C766
R764
R765
R762
C764
R763
C758
R754
R755
R756
R757
C755
C759
C756
C767
C763
R760
R761
C760
C757
R759
R758
C753
C752
C762
C754
C761
R753
R750
R751
R752
J201
D751
CN751
IC752
IC750
JW750
JW751
IC751
R772
Q753
Q752
Q751
J756
J755
J754
J753
J751
J750
J752
IC201
C770
C750
C751
9P
100p
2200p
1k
3P
2200p
2200p
1k
1k
1k
1k
2.2k
2.2k
1k
1k
2.2k
1k
2.2k
1k
2200p
6P
4P
1SS133T
0.1
0.1
75
75
100
10k
10k
6.8k
6.8k
10k
470p
470p
BA1A4M
47
16V
4.7k
10k
75
0.1
75
10
50V
75
75
75
75
0.1
10
50V
0.1
0.1
0.1
75
75
10
50V
0.1
75
75
47p
47p
2200p
2200p
2200p
1k
1k
1k
1k
6P
1SS133T
NJM-2296D-
NJM-2296D-
NJM-2145D-
100
BN1A4M
BN1A4M
BN1A4M
TC9273-014
10
50V
47p
47p
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
1
0
A
1
1
A
1
2
*
C
C
Y
C
Y
Y
+5V
SW1
SW2
SW3
SW4
SIRCS OUT
MBUS-TV
MBUS-STATUS-OUT
MBUS-V1
VIDEO3
GND
GND
GND
MBUS-DVD
VIDEO3(Y)
VIDEO3(C)
-5V
VCC
OUT1
IN4
IN3
IN2
O3-1
O3-2
O3-3
O2-3
O2-2
O2-1
NC
IN1
INH2
INH1
GND
MONITOR-C/IN
MONITOR-C/OUT
MONITOR-Y/IN
MONITOR-Y/OUT
LOUT
ROUT
GND
15V
-15V
LAT
DATA
CLK
L
R
NC
N
C
VIDEO3
R
L
VDD
VSS
CO
M
T
V/DB
S
D
V
D/LD
V2 OUT
VIDE
O
2
V1 OU
T
VIDEO
1
L
AT
G
ND
DAT
C
LK
CO
M
V
IDEO
3
C
Y
C
Y
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
+5V(BACK UP)
DB870:CND
/DB1070
(US,CND)
VIDEO3
*
(US,CND)
(DB1070:AEP,UK,E,CH)
(DB870:AEP,UK)
19P
14P
10P
CN751
Y SWITCH
C SWITCH
(DB870)
CONTROL S
I/O SWITCH
Q750,751
BUFFER
BUFFER
Q752,753
IN
MONITOR
CTRL S
CTRL S
TV/SAT
STATUS IN
CTRL S
DVD/LD
OUT
CTRL S
OUT
VIDEO 1
MONITOR
S-VIDEO
OUT
S-VIDEO
TV/SAT
IN
S-VIDEO
IN
DVD/LD
S-VIDEO
OUT
S-VIDEO
IN
VIDEO 1
L
R
L
R
L
R
L
R
L
R
L
R
TV/SAT
AUDIO IN
AUDIO IN
DVD/LD
AUDIO OUT
AUDIO IN
VIDEO 2
AUDIO OUT
AUDIO IN
VIDEO 1
VIDEO
SELECT
(US,CND)
(DB870)
(Page 23)
(Page 35)
(Page 29)
(Page 35)