Read Sony XTL-W70 (serv.man2) Service Manual online
17
17
XTL-W70
4-3. BLOCK DIAGRAM — TUNER UNIT (AUDIO) SECTION —
INPUT1
AUDIO
L
-2
CN2 (2/2)
J10-2
J5-2,3
AUDIO
AUDIO
R-CH
R-CH
R-CH
NAVI IN
SONY NAVI
(NVX)
INPUT2
AUDIO
J6-2,3
R
-3
L
-2
R
-3
OUTPUT
AUDIO
J8-2,3
L
-2
R
-3
ANT IN
J1
TRAP
T1,2
AGC
VR1
VCO
AFT
VIDEO
DET
RF
AGC
HPF
T3
VOLTAGE
CONTROL
IC3
B+
(S +9V)
3
CN4
P.B
ACC
3
4
6
7
3
1
15
11
1
4
1
7
47
35
14
15
42
40
60
44
29
21
22
4
5
12
49
4
8
4
3
11
12
13
1
9 4 5
14
9 10 6
13
18
19
D6
D2
EQ
IN
VIDEO
VDET
CF1
14
21
X2
8MHz
RESET
IC1
CF3
6MHz
CF2
5.5MHz
EQ
AMP
FM
DET
HPF
VCA
PAUSE
DET
LATCH
Q20,21
VIDEO
AMP
Q24
LATCH
Q22,23
LPF
GATE
PILOT
CANCEL
2
1
24
1
10
1
3
1
3
POWER
ON/OFF
Q3,4
B+
SWITCH
Q2
D5
FU1
3.15A
+5V
REG
Q1
AUDIO MUTE
DRIVE
Q72,73
TONE
AMP
Q30,31
LEVEL
DETECT
Q32
B+
(+5V)
POWER
MUTE
DRIVE
Q35
Q96
MUTE
AUDIO
MUTE
Q80
MUTE
Q81
SIMUL
X2
2nd
SIF
SIF
FM
DET
X1
X0
X
B A
INH
R-CH
R-CH
IC15
5
7
SYSTEM CONTROL
IC12 (2/2)
VIDEO
V1
V2
UK/CCIR
AFT
PLL DATA
PLL DATA
PLL CLK
P.B
POWER
VIDEO1
VIDEO2
VOL
S.MUTE
RESET
XIN
XOUT
R-CH
LEVEL
ADJ
Q33
Q33
B+
(S +9V)
B+
(S +12V)
B+
(S +5V)
IC29 (1/2)
IC29 (2/2)
5
7
5
7
IC27
IC28
TUNER BLOCK
TU1
VF/SIF PROCESSOR
IC13
IN
BT
SCL
SDA
IF2
AGC
SF1
VIF
VCO
MIX
VCO
VIF
RF
AGC
AGC
RF AGC VR
AFT
10
8
3
Q106
12
NF
OUT
NOISE CANCELLER
IC33
AUDIO
VOLUME
CONTROL
IC16
6
+9V REG
IC4
+5V REG
IC2
AUDIO SWITCH
IC14
VIDEO
SECTION
3
VIDEO
SECTION
2
VIDEO
SECTION
4
• Signal path
: VIDEO
: AUDIO
: VIDEO
: AUDIO
• R ch : same as L-ch.
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