Block Diagram -Tuner Section - Sony CDX-MP450X Service Manual

CDX-MP450X
3-2. BLOCK DIAGRAM — TUNER SECTION —
1
TUNER UNIT
TU601
CD
CNJ601
SECTION
(ANTENNA)
(Page 23)
1
AM ANT
L-OUT 18
R-CH
R-OUT 16
2 FM ANT
AM DET 12
FM DET 22
LCL/DX 4
VT 5
VCO 6
MONO 11
S-METER 19
SD 20
IFC/SEEK 21
FM +B 8
TU +B 9
AM +B 10
CD MECHA
REG
DRIVER +5V POWER CONTROL
Q905
Q906-908
2
MECHA ON
MPEG
CD ON
SECTION
(Page 24)
CD POWER
REG
CONTROL
AUDIO+3.3V
Q901,IC903
Q902-904
D+3.3V
A+13.3V
ELECTRONIC VOLUME
L3
L-CH 36
L2 LTOUT LSIN
37 28 27
L1
38
SYSTEM CONTROL
IC801(1/2)
64 ST IN
39 LCL/DX
LOW PASS
FILTER 35 ED1 PDOUT
Q603,604
31 VCOH FM
32 VCOL AM
45 MONO
26 S-METER
46 SD
29 FM IFC
28 AM IFC
POWER IC ON
FM POWER POWER
CONTROL CONTROL BATT
Q602,607 Q909,923,924
51 FM ON
AM POWER
CONTROL
Q601,606
52 AM ON
BATT
MSC 68 MSC
3
MSI 69 MSI
MSO 70 MSO
MPEG
MSRQ 71 MSRQ
SECTION
MCS 72 MCS
(Page 24)
SYSRST 6 SYSRST
BATT
8
SELF SW 2 SELF SW
CD
SECTION
(Page 23)
IC401
FL
21
LFIN
23 22 TONE
LSOUT
20
RL
18 17 16
(Page 24)
MPEG
SECTION
4
VOL CE 47
A MUTE
VOL DATA 49
VOL CLK 48
MUTE DRIVE
MUTE 8
Q401,402
BEEP 40
17
AMP MUTE 19
TEL MUTE 16
ACC
ACC CHECK
ACC IN 41
Q913,914
BATT
BATT
BU CHECK
BU IN 78
Q911,912,922
BATT
ANT ON 58
AMP ON
60
VIDEO +6V
BU+5V
REG
BU+3.3V
IC904
22 22
PJ401-3
Q406
R-CH
PJ401-1
R-CH
Q405
POWER AMP
IC902
CNP901
OUT2+
5
IN2
12
OUT2-
3
OUT1+
9
IN1
11
OUT1-
7
AUX
16
IN
STBY MUTE
4 22
R-CH
Q407
MPEG
5
BU CHECK
SECTION (Page 24)
POWER SUPPLY
AM POWER
IC901
CONTROL
Q915,916
1 AMP ON AMP+B 2
5 BU+B VCC 4 BATT
BATT
ACC
L
AUDIO OUT
-4
FRONT
R
L
AUDIO OUT
-2
REAR
R
FL+
1
FL–
9
RL+
2
RL–
10
3
RR+
11
RR-
4
FR+
12
FR-
13
TEL MUTE
15
PERK
Signal path
: FM
: AM
: CD AUDIO
6
ANT REM
5
AMP REM
16
BATT
7
ACC
8
GND