Sony STR-DB798 Service Manual

STR-DB798
3333
STR-DB798
R388
C374
C375
C376
L371 R376C368
R374 C372 C373R375 R377
C369
R363
L370
C371
C378
C352
C380 R378
C381
C379
L376
100µH
C384
C353
C382
C367
C366
C356
C387
C385
C357
C383
C389
L372
C390
C386
L373
L377
C377
C362
FB354
C391
C392 R386
R365
R366
C393
C396
C397
FB353
C395
R387
C394
C398
R382 C364 C363
L374 R383
C365
R379
R389
C399
C360R390C361R391
R373
R367
IC370
L375
IC372
X371
R392
IC371
C952
C956
C955
C953
R959
R313
R301
R302
R303
C308
C310
C311
C309
C312
R307
R308
R309
C350
R306
R305
R304
C954
Q955
Q956
R955
R956
Q957
R954
Q953
IC952
IC1304
C313
Q954
CNP3052
R368R369
C388
C354
L378
C355
CN3801
R393
R394
Q372
R384 C358
R385
Q373
Q371
R359 R358
JW300
IC951
CN919
CN918
390
470
10V
22
50V
47
10V
1k4.7 50V
C317
47 16V
1M 12p 22p3.9k 820
0.1
1M 22p
0.1
0.1
0.01 820
0.01
180p
0.1
100
10V
0.1
0.01
0.1
0.01
0.01
0.01
0.01
100
10V
0.1
100
10V
100
10V
0.1
470
10V
47
10V
0.1 10k
100
100
15p
4.7
50V
0.01
0.01
10k
2.2
50V
56p
1.2k 12p 22p
1.8k
47
10V
820
390
10
50V
560p1M390p15k
820
10k
TC90A69N
NJM2268D
47 16V
470
16V
C3803
100
16V
C3801
100
16V
0.22
0.22
10k
1k
75
75
75
1 50V
1 50V
1 50V
1 50V
1 50V
75
75
75
0.01
C331
0.1
C3804
0.1
C328
47 16V
C330
0.1
C3802
0.1
75
75
75
0.1
DTC124ESATP
DTC124ESATP
680
10k
2SB733
1k
2SD773
7805
NJM2586M
1 50V
DTA114TSA
11P
3.3k3.3k
0.01
0.01
0.1
50V
11P
12k
12k
2SC1740TP
3.9k 12p
820
2SC1740TP
2SC1740TP
1k 1k
79005
6P
6P
SW1
SW2
PS
V-POWER
V-POWER
SW1
SW2
PS
∗
∗
∗
SW4
SW3
+5V
GND
V
Y
C
NC
NC
NC
∗
VIDEO AMP
BUFFER
Y SYNC
BUFFER
C SYNC
BUFFER
VIDEO
L375
22µH
33µH
∗
3.5795MHz
4.43MHz
∗ IC371
X371
MM1093NF
MM1093PFB
(AEP,UK)
(TW)
4.7k
5.6k
CLOCK GENERATOR
O
SC R
N
C
FSC
OUT
GND
2
GND
1
X'TAL
APC1
FILTER
FILTER
ACC
CH
ROMA
IN
VCC 1
VCC 2
OSC C
FILT
ER
A
PC2
OUT
4FSC
FILTE
R
BUR
ST G
ATE
IN
COMPOSITE
VIN2
VOUT1
VIN1
GND
VSAG1
VOUT2
NC
V+
Y
COMPONENT
VIDEO
J301
VIDEO SYNC
SEPARATOR
-5V
INPUT SELECT
+5V REGULATOR
G
IO
-5V REGULATOR
Q953-957
B+ SWITCH
B-Y
P
B / C B /
B-Y
P
R / P R /
MONITOR
OUT
DVD IN
TV/SAT
IN
ASSIGNABLE
SCL
SDA
V-POWER
+8V
-8V
GND
PS SAVE-
SW1-
SW2-
PNR
RESET
(TW)
(AEP,UK)(CHASSIS)
G
OI
(TW)
(AEP,UK)
(ARP,UK)
(TW)
100µH
100µH100µH
27µH
27µH
( )
( ) ( ) ( ) ( ) ( ) ( ) ( )
( ) ( ) ( ) ( ) ( ) ( ) ( ) ( )
( )
( )
( ) ( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
6-20. SCHEMATIC DIAGRAM – COMP-V BOARD –
(Page 25)
(Page 43)
(Page 35)
(Page 31)
• See page 52 for Waveforms. • See page 53 for IC Block Diagrams.

Sony STR-DB798 Specifications

General

Impedance	8 Ω
Supported radio bands	FM
Radio Data System (RDS)	Yes
Channels quantity	7 channels
I/O ports	Output(Component x 1, Optical Digital x 1, Composite x 1, S-Video x 1), Input(Component x 2, Optical Digital x 4, S-Video x 4, Coaxial Digital x 2, Composite x 4)