Read Sony STR-DB798 Service Manual online
STR-DB798
13
13
STR-DB798
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – TUNER/VIDEO Section –
• SIGNAL PATH
: TUNER
A
DATA,
CLK
CLK
FM
AM
8
L CH
10
R CH
13
FM SIG OUT
14
RDS-INT
15
RDS-DATA
116
VIDEO_SW3
117
VIDEO_SW4
115
VIDEO_SW2
114
VIDEO_SW1
100
UP CON SCL
99
UP CON SDA
2
ST-DO
4
CE
3 ST-DI
1 CLK
7
STEREO
11
MUTE
6
TUNED
(AEP, UK)
TUNER
47 RDS.DATA
RDS_SIGNAL
RDS_CLK
66 TUNER LATCH
49 TUNER TUNED
48 TUNER ST
50 TUNER MUTE
135
65 TUNER DO
61
SYSTEM CONTROLLER
IC1703 (1/6)
B
TUNER-L
COAXIAL
FM 75
AM
R-CH
: VIDEO
ANTENNA
SW4
SW3
SW2
39
CSW1
34
CSW2
40
C.PSAVE
CSW1
CSW2
C.PSAVE
SW1
SCL
SDA
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
D302
D301
D851
D850
J1091 (1/2)
VIDEO 3
INPUT
VIDEO
VIDEO
TV/SAT VIDEO IN
DVD VIDEO IN
VIDEO 2 VIDEO IN
VIDEO VIDEO 2 OUT
J305
J304
VIDEO
VIDEO
VIDEO
VIDEO 1 VIDEO IN
VIDEO 1 VIDEO OUT
J1092
J852 (2/2)
J850 (2/2)
J850 (1/2)
J852 (1/2)
C
Y
C
Y
C
Y
C
Y
C
Y
J302
VIDEO SELECTOR
IC301
C SWITCH
IC850
Y SWITCH
IC851
VIDEO 3
INPUT
S-VIDEO
TV/SAT
S-VIDEO IN
DVD
S-VIDEO IN
VIDEO 1
S-VIDEO IN
J853 (1/2)
C
Y
VIDEO 2
S-VIDEO IN
VIDEO
MONITOR
VIDEO OUT
V1. OUT
V1. IN
V2. IN
V2. OUT
TV
LD
V3
M. OUT
SW5
SW1
SW2
SW3
SW4
VIDEO 1
S-VIDEO OUT
J853 (2/2)
C
Y
VIDEO 2
S-VIDEO OUT
SW4
SW1
SW2
SW3
C
Y
J851
MONITOR
S-VIDEO OUT
RY850
-1
-2
VIDEO
BUFFER
Q372
19
27
7
15 16
25
VIDEO SYNC
SEPARATOR
SEPARATOR
IC370
4
1
7
16
CLOCK
GENERATOR
IC371
X371
3.5795MHz (Taiwan)
4.43MHz (AEP, UK)
C SYNC BUFFER
Q373
RELAY
DRIVE
Q850, 851
SYNC SEPARATOR
IC852
Y SYNC BUFFER
Q371
VIDEO
AMP
IC372
DATA
CLK
CLK
SCL
SDA
11
V2.OUT
11
V2.OUT
• R-CH is omitted due to same as L-CH.
J301 (1/2)
TV/SAT
IN
P
B
/C
B
/B-Y
P
R
/C
R
/R-Y
Y
COMPONENT
VIDEO
ASSIGNABLE
P
B
/C
B
/B-Y
P
R
/C
R
/R-Y
Y
COMPONENT
VIDEO
ASSIGNABLE
DVD IN
P
B
/C
B
/B-Y
P
R
/C
R
/R-Y
Y
CSW1
MONITOR
OUT
J301 (2/2)
24
CH1OUT
CH1IN3
CH1IN2
3
INPUT SELECT
IC1304
5
22
CH2OUT
20
CH3OUT
CH2IN3
CH2IN2
10
12
CH3IN3
CH3IN2
15
13
2
SW1
CSW2
4
SW2
C.PSAVE
23
PS
CHROMA IN
COMPOSITE IN
X' TAL
FSC
OUT
(Page 17)
(Page 15)
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