Schematic Diagram − Comp-V Board - Sony STR-DB798 Service Manual

6-20. SCHEMATIC DIAGRAM – COMP-V BOARD –
P B / C B /
B-Y
P R / P R /
B-Y Y
MONITOR
OUT
J301
COMPONENT
VIDEO
DVD IN
ASSIGNABLE
TV/SAT
IN
C350
(CHASSIS) 0.01
STR-DB798
• See page 52 for Waveforms. • See page 53 for IC Block Diagrams.
PS
R303 75
R313
1k
R302 75
R301 75
INPUT SELECT
IC1304
NJM2586M
JW300
R304 75
R305 75
R306 75
SW2
SW1
C313
1 50V
C309 1 50V
C308 1 50V
C310 1 50V
R307 75 C311 1 50V
R308 75 C312 1 50V
R309 75
C317
47 16V
C331
R956
0.1 ( )
R955 10k
+5V REGULATOR
680 Q953-957
C3804 IC952 Q957
B+ SWITCH
7805 2SB733
0.1 ( )
Q956
( ) ( ) ( )
DTC124ESATP
O I
G
( ) V-POWER
C956 C3803
( )
470 100 C955 C954
16V 16V 0.22 0.1
C3801
( )
100
C952 C953
16V
47 16V 0.22
( )
Q955
( ) ( )
G DTC124ESATP
O I Q954
( )
( )
C328
R954 DTA114TSA
47 16V
IC951 1k
79005
( )
C330
0.1 Q953 R959
( )
2SD773 10k
-5V REGULATOR
C3802
0.1
R363 R384 C358 C371 R373
1M 3.9k 12p 22p 820
C369 L370 R385
0.1 27µH 820
Q373
2SC1740TP
C SYNC
BUFFER C367
0.01
R374 R375 C372 C373 R377
1M 3.9k 12p 22p 820
L376
100µH
C368 L371 R376
4.7 50V 1k
C353
C382
100
0.1
C375 10V
22
50V C379
C380 R378
180p
0.01 820
C374
470
10V
C381 0.01
Q371
2SC1740TP
C366
Y SYNC
0.1
BUFFER
C352 C384
0.1 0.1
VIDEO AMP
C378
0.1
IC372
NJM2268D
C376 C362
R359 R358 C377
47 470
1k 1k 0.1
10V 10V
33 33
C386
∗ X371
100
10V 3.5795MHz (TW)
4.43MHz (AEP,UK)
C388
0.01
R369 R368
FB353
3.3k 3.3k
C390
100 C391
C392 R386 C395
10V 47
0.1 10k 0.01
10V
R387
C393 10k
15p
C394
C354
2.2
0.01
50V
L378
R367
10k
C356 0.01
C355
0.1
50V
C387 0.01
C385 0.01
C357 0.01
IC370
TC90A69N
R392 R391 C361
15k 390p
4.7k (AEP,UK)
5.6k (TW)
VIDEO SYNC
SEPARATOR MM1093NF
MM1093PFB
R379 R393 R382
820 12k 1.2k
Q372
2SC1740TP C365
L372 R394
47
100µH VIDEO 12k
10V
BUFFER
STR-DB798
CNP3052
11P
PS PS SAVE-
∗ L375
SW1 SW1-
22µH (ARP,UK)
SW2 SW2-
33µH (TW)
PNR
RESET
R365 100 SDA
R366 100 SCL
V-POWER V-POWER
C396 +8V
C398
4.7
56p L375
(Page
50V GND
∗
-8V
CN918
6P
C397
0.01
R388
390
(Page
CLOCK GENERATOR
IC371
∗
C399
R389 10
(Page
390 50V
CN919
6P
R390 C360
1M 560p
∗
IC371
(TW)
(AEP,UK) CN3801
11P
NC
NC
NC
C364 C363
12p 22p
V
Y
L374 R383
27µH
1.8k
C
FB354
SW4
SW3
(Page
-5V
GND
+5V