Diagrams; Block Diagram - Tuner/Video Section - Sony STR-DB798 Service Manual

6-1. BLOCK DIAGRAM – TUNER/VIDEO Section –
TUNER-L
B
(Page 15)
TUNER
COAXIAL
FM
FM 75
ANTENNA
R CH
AM AM
(AEP, UK)
RDS-DATA
RDS-INT
FM SIG OUT
DATA,
CLK
DATA
A 3 ST-DI ST-DO
CLK
1 CLK
(Page 17)
TUNED
STEREO
MUTE
VIDEO
VIDEO
• R-CH is omitted due to same as L-CH.
• SIGNAL PATH
: TUNER
: VIDEO
STR-DB798
SECTION 6

DIAGRAMS

L CH 8
10 R-CH
SYSTEM CONTROLLER
IC1703 (1/6)
SDA
UP CON SDA 99
SCL
UP CON SCL 100
15 47 RDS.DATA
14 61 RDS_CLK C.PSAVE
C.PSAVE 40
CSW1
13 135 RDS_SIGNAL
CSW1 39
CSW2
CSW2 34
2 65 TUNER DO
SW1
CE 4 66 TUNER LATCH VIDEO_SW1 114
SW2
6 49 TUNER TUNED VIDEO_SW2 115
SW3
7 48 TUNER ST VIDEO_SW3 116
SW4
11 50 TUNER MUTE VIDEO_SW4 117
VIDEO SELECTOR
IC301
J1091 (1/2)
VIDEO 3
V3
7
INPUT
VIDEO
J305
SW4 6
3 TV
TV/SAT VIDEO IN
DVD VIDEO IN 5 LD SW3 4
VIDEO VIDEO 2 OUT 11 V2. OUT
J304
SW2 10
VIDEO 2 VIDEO IN 9 V2. IN
VIDEO 1 VIDEO OUT 15 V1. OUT
SW1 14
M. OUT
1
VIDEO 1 VIDEO IN 13 V1. IN
SW5 2
J1092
Y
Y SWITCH
VIDEO 3
IC851
INPUT
S-VIDEO 7 V3 10
SW2
C
SW3 4
9 V2. IN
SW1 14
3 TV
J850 (2/2) SW4 6
Y
TV/SAT V1.OUT 15
5 LD
S-VIDEO IN
V2.OUT 11
C
M.OUT
1
13
V1. IN
SW5 2
J850 (1/2)
C SWITCH
Y
IC850
DVD
S-VIDEO IN
7 V3 SW2 10
C
SW3 4
9
V2. IN
SW1 14
3 TV
SW4
6
J852 (1/2) V1.OUT 15
Y
5 LD
VIDEO 1
V2.OUT 11
S-VIDEO IN
1
M.OUT
C
13 V1. IN
SW5 2
J853 (1/2)
Y
VIDEO 2
S-VIDEO IN
C
J301 (1/2)
Y
TV/SAT P /C
B B
IN /B-Y
P /C
R R
COMPONENT /R-Y
VIDEO
ASSIGNABLE
Y
P /C
B B
DVD IN
/B-Y
P /C
R R
/R-Y
D301
15 16
VIDEO VIDEO SYNC
BUFFER 7 SEPARATOR
D302 Q372 IC370
1 CHROMA IN
CLOCK FSC
16 7
COMPOSITE IN
GENERATOR OUT
X' TAL
IC371
4
X371
3.5795MHz (Taiwan)
4.43MHz (AEP, UK)
D851
D850
SYNC SEPARATOR
IC852
13 13
INPUT SELECT
IC1304
J301 (2/2)
5 CH1IN3 CH1OUT 24 Y
3 CH1IN2
P /C MONITOR
B B
12 CH2IN3 CH2OUT 22
/B-Y OUT
10 CH2IN2
P /C
R R
13 CH3IN3 CH3OUT 20
/R-Y
15 CH3IN2
2 4 23
C SYNC BUFFER
27
Q373
VIDEO
AMP
IC372
Y SYNC BUFFER
25
Q371
19
-2
-1
RY850
RELAY
DRIVE
Q850, 851
STR-DB798
COMPONENT
VIDEO
ASSIGNABLE
J302
VIDEO
MONITOR
VIDEO OUT
Y
J853 (2/2)
VIDEO 2
S-VIDEO OUT
C
Y
J852 (2/2)
VIDEO 1
S-VIDEO OUT
VIDEO
C
Y J851
MONITOR
S-VIDEO OUT
C