Block Diagram -Tuner Section - Sony WX-4500X Service Manual

6-3. BLOCK DIAGRAM — TUNER SECTION —
TAPE
1
TAPE L
SECTION
(Page 28)
LPF
IC451
CD
2
CD L 3 1
SECTION
(Page 26)
TU1
TUNER UNIT
J1
1 ANT-AM
(ANTENNA)
AM DET 8
2 ANT-FM
MPX 10
SDA 12
SCL 13
S-METER 14
FM AGC 4
SDA 17
SCL 18
• Signal path
: FM
: AM
: CD
: TAPE(PB)
• R-ch is omitted due to same as L-ch.
ELECTRONIC VOLUME
IC300
CDC L
4
TAPE L
44
CD L
40
38 3 1 33
VOL
AM
9
MPXI
ADSO(L-CH)
12
IC100
14
53 VSM
51 FM AGC
10 EE DATA
EE CLK
11
X1A
73
X700
32.768kHz
74 XOA
92 XO
X451
3.58MHz
XI
93
1
+8V REG
COM8V AUDIO 10V TU5V
4 2
IC301
27
SA OUT
23 SA AUDIO
TAPE
4
SA CLK 21 SA CLK
SECTION
(Page 28)
SW
24
BAL/
FL
TONE
28
FAD
RL
27
19 20 17
CD
3
(Page 26)
SECTION
A-MUTE
MUTE MUTE MUTE
Q303 Q303 Q303
70 71 57
MUTE DRIVE
MUTE 59
Q300,301
AMP ON 60
AMP MUTE 58
BEEP 15
MAIN
TAPE
SYSTEM CONTROL 5
RESET
SECTION
IC700(1/2)
(Page 28)
TEST IN 80
ACC CHECK
ACC IN 81
Q903
ILL IN 100
TEL ATT 79
BATT
TU ON 1
ANT/AMP
REMOTE SW
Q902
POWER ON 104
BATT
1
+5V REG REG
BATT
4 2
Q1 IC1
TU8.5V
27
CN300
-1
L
BUS AUDIO IN
-2
R-CH R
-3
L
SUB WOOFER OUT(MONO)
-4
R
MUTE
Q302
POWER AMP
IC170
CN900
2
OUT1+
9 FL+
IN1
11
1
OUT1–
7
FL–
OUT3+ 10
17 RL+
IN3
15
OUT3–
9
19
RL–
22 MUTE
4 STBY
AC GND
16
3
FR+
4
FR–
R-CH
11
RR+
12
RR–
13
TEST
7
ACC
15
ILLUM CHECK
ILL
Q904
14
TEL ATT
ATT
Q906
ANT REMOTE 5
ANT REM
SW
Q900(1/2)
AMP REMOTE 6
AMP REM
SW
Q900(2/2)
16
BATT BATT
F901
WX-4500X