Sony STR-DB870 Service Manual

STR-DB870/DB1070
2323
5-10. SCHEMATIC DIAGRAM – VIDEO Board – • See page 38 for Waveforms. • See page 38 for IC Block Diagrams.
S-VIDEO
BOARD
CN751
C363
C
369
R
351
C373
C365
C364
C378
C380
R357
R305
R307
R310
R304
R306
R309
R325
R301
R302
R303
R312
R311
Q302
C
38
2
C
37
9
C381
C367 C360
C377
R355
IC310
FB303
C368
C362
C366
JW305
D
304
D
303
C358
R337
C302
C304
C305
R313
R314R316R315
C353
C352
C337
C343R339
C344R340
C351
C349
R346
C348
C347
R344
C346
C342R338
C345R341
C336
R342C335
C354
C350
FL304
R
350
C
355
R348
R345R343
R349
C375
R333
R330
R329
C339
C340
C341
C333
R334
C332
FL302
R332
C324
E5
E6
E7
E4
R317
X302JW301
X301
CT301C316
C
322
C323
C
T302
C329
R331
IC305
L301
CT303
C326
C328
C325
CN306
R
321
R
320
R
322
C319
C318
IC311
IC308
R354
R359
R308
CN302
CN303
CN301
IC309
R352R353
C361
C359 C370
C372
R356
C374
IC312
IC302
Q304
FL305
FL303
IC304
IC306
FL301
J303
J304
J305
J302
R318
R323
J301
C310
R328
R
319
C
320
R336
R335
C331
C330
C315
C314
D301
C312C309 C308 C311
R
358
IC303
C313
C307
R326
C301
IC301
C303
Q305 R347
R324
R327
C376
IC307
10
50V
47p
75
0.1
0.1
0.1
0.1
0.1
100
75
75
75
75
75
75
10k
75
75
75
1k
1k
BA1A4M
0.1
0.1
0.1
0.1 0.1
0.1
330
74ACT08
1
50V
10 50V
10 50V
1S
S
133
T
1S
S133
T
0.1
330
470
10V
33p
33p
330
22k22k330
2200p
2200p
47p
47p75
47p75
2200p
10
50V
75
10
50V
10 50V
75
10
50V47p75
47p75
47p
7547p
0.1
0.1
47k
10
50V
47k
47k47k
1.2k
10
50V
4.7k
10
10
0.1
2200
10V
0.1
0.1
100
0.1
100
0.1
1M
14MHz
17.34MHz
20p10p
10p
27p
20p
100p
1k
BA7622F
20p
18p
0.1
33p
4P
1k
1k
1k
0.1
1
50V
LA7213
NJM-2296M-
330
330
1k
2P
LA7213
330150k
1000
6.3V0.1 0.1
1000
6.3V 150k
0.1
74ACT08
OPA2652
2SC2785
74HCU04
74HC00
3P
3P
1P
75 75
9P
10
50V
100
330
27p
75
75
10
50V
10 50V
470
10V
470 10V
1SS133T
10
50V
10
50V
10
50V
10
50V
22
k
TC74HC4053AF
10 50V
33p
330
470 10V
OPA2652
470
10V
2SC2785 3.9k
1M
330
150V
MB90089F-
G-238-BND
SW1
SW2
SW3
SW4
SW1
SW2
SW3
SW4
A1
A2
A3
A4
A1
A2
A3
A4
B1
B2
B3
B4
B5
B1
B2
B3
B4
B5
C1
C2
C3
C4
C1
C2
C3
D1
D2
D1
D2
D3
D4
D3
D4
E1
E2
E3
E1
E2
E3
C4
*
*
GND
GND
EXVSYN
EXHSYN
VSYNC
HSYNC
XS
EXS
VCC
VBLK
FSCO
AVCC
VIN
CIN
YIN
YOUT
COUT
VOUT
CS
SIN
SCLK
TEST
VOC0
VOC1
VOC2
VOB
XD
EXD
+5V
SW1
SW2
SW3
SW4
GND
GND
VIDEO3
-5V
MONITOR-C/IN
MONITOR-C/OUT
MONITOR-Y/IN
MONITOR-Y/OUT
MBUS-STATUS-OUT
MBUS-TV
MBUS-DVD
MBUS-V1
SIRCS OUT
VCC
GND
CIN
VIN
YINVOUT
COUT
YOUT
AVSS
VSS
VCC
VSYNC
GND
HSYNC
IN
IN
HSYNC
GND
VSYNC
VCC
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
Y
PBB-Y
PRR-Y
Y
PBB-Y
PRR-Y
Y
PBB-Y
PRR-Y
IN
DVD/LD
IN
TV/SAT
MONITOR
OUT
VIDEO
COMPONENT
*
21P
15P
11P
(US,CND)
(DB1070:AEP,UK,E,CH)
(DB870:AEP,UK)
CN303
GND_A1
MBUS_TV
MBUS_DVD
SIRCS
OSD_DATA
OSD_CLK
OSD_CS
MBUS_OUT
MBUS_V1
CTRL A1
V_SW1
V_SW2
V SW3
V SW4
P/N
GND
-5V
+5V
+5V(B_UP)
V-SYNC
GND
(US,CND)
DB870:CND
/DB1070
VIDEO SELECT
INVERTER
(US,CND)
DB870:CND
/DB1070
*
(US,CND)
(DB1070:AEP,UK,E,CH)
(DB870:AEP,UK)
19P
14P
10P
CN301
+5V(BACK UP)
SYNC SEPARATESYNC SEPARATE
DB1070:AEP,
UK,E,CH
(DB870)
VIDEO SELECT
LINE AMP
VCC
VSS
VCC
VSS
LINE AMP
BUFFER
BUFFER
1
2
3
1
2
3
1
2
3
OSD DRIVER
VIDEO
BUFFER
CLOCK
1
2
3
COMPARATOR
1
2
3
CONTROL A1 II
MONITOR
OUT VIDEO
TV/SAT
IN VIDEO
IN VIDEO
DVD/LD
OUT VIDEO
IN VIDEO
OUT VIDEO
IN VIDEO
VIDEO 2
VIDEO 1
(DB1070:AEP,UK,E,CH)
(US,CND)
(DB1070:US,CND)
DB1070:AEP,
UK,E,CH
(DB1070:US,CND)
(DB1070:AEP,UK,E,CH)
(DB1070)
LEVEL SHIFT
LEVEL SHIFT
22µH
(Page 25)
(Page 15)

Sony STR-DB870 Specifications

General

Brand	Sony
Model	STR-DB870
Category	Stereo Receiver
Language	English