Tuner Block Diagram - Sony SLV-478 Service Manual

Q Q
3 7 6 3 1 5 1 5 0

3-5. TUNER BLOCK DIAGRAM

MA-317 BOARD
(SEE PAGE 4-19)
TU701
TUNER/MOD/IF
IN SPLITTER
VHF/
UHF
OUT
T E
L 1 3 9 4 2 2 9 6 5 1 3
4CH
RF
2
MOD
3CH
S701
RF CH
1 5
w w w
.
16
L731
9 8 7
IF702
RF IF 14 2
TV
AGC 6 7
VTR
4 12 10 11
PLL DATA
PLL CLOCK
PLL ENABLE
TV/VTR
RF VIDEO
RF AUDIO
x a o
y
i
3-9
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8
3
12V
V OUT
IF 8
RF AGC
Q Q
3 7 6 3
MPX
4
AFT
6
SEPARATION
IC160 100
IC160 23
FROM
IC160 24 SYSCON
BLOCK
(SEE PAGE 3-5)
IC160 21
FROM
Q560 VIDEO
BLOCK
(SEE PAGE 3-4)
FROM
IC360 11 AUDIO
BLOCK
u 1 6 3 (SEE PAGE 3-8)
.
http://www.xiaoyu163.com
SLV-478/677HF/678HF/688HF/L47/L48/L57/
L58/L67HF/L68HF/L77HF/L78HF/X50/X60HF
2 4
9 9 8
TU VIDEO
IC733
ST / BILINGUAL
PROCESSOR
1 5 1 5 0 8 9 2 4
1 L
VCC 3 TU AUDIO L
12 R
MPX IN 4 TU AUDIO R
RV731
FORCED
7 F MONO
MUTE
5 TA MUTE
MS0 8 MAIN/SAP
MS1 9 MAIN/SAP
ST IND 11 STEREO
SAP IND 10 SAP
HIFI ONLY
TU AFT
m
c o
3-10
2
9 9
TO
IC201 32 VIDEO
BLOCK
(SEE PAGE 3-3)
9 8 2 9 9
IC360 1
TO
AUDIO
BLOCK
IC360 2
(SEE PAGE
3-7)
IC160 15
IC160 53
IC160 74
IC160 45
IC160 12
TO/FROM
SYSCON
IC160 25
BLOCK
IC160 3
(SEE PAGE 3-5)