Block Diagram -Tuner Section - Sony CDX-M750 Service Manual

4-3. BLOCK DIAGRAM — TUNER SECTION —
TUNER UNIT
TU601
ANT MPX
1 10
(ANTENNA)
AM IF 19
2 ANT AMDET 8
BUF
Q607
RDS 9
X601
4.3MHz
(M700R)
S METER
14
SDA IC
12
SCL IC 13
FM AGC 4
SDA ROM
17
SCL ROM
18
• Signal path
04
ELECTRONIC VOLUME
IC401
1 30
SEL OUT FL
3
FL 34 ACIFLR
RL 33 AC INLR
TO DISPLAY
SR 35 SWINR
SECTION
ADL 24 OUTSSL 29
OUT RL
(Page 44)
13 MPX
12 AM IF
11
AM
15 MP IV
Q602 Q601
14 S METER
20 SDA
21
SCL
17
QUAL
18 MUTE SWR 25
MUTE
SYSTEM CONTROL
CONTROL
IC801 (2/3)
Q604,606
31 VOL ATT
32 TU ATT
(M750)
NOISE
5 1
FILT 50 QUALITY
Q605
IC602
56 NS MASK
55
ST-BY
RDS DECODER
IC601
TEL ATT 16
ILL IN 95
16 RDS 9
FM DET
4 SCL 10 ACC IN 81
XO
X1A 73
MPTH 2
5 XI 52 MPTH
74
20 S METER DAVN 8 75 DAVN X0A
VSM TEST 84
53
70 I2CSIO
PW ON 83
71 I2CCKO
X0 92
51 FM AGC
10 E2PSIO
93
X1
11 E2PCKO
TU ON 114
: FM
: AM/MW
43
(M750)
IC402
7 12
Q202
PRE
AMP
2 13
Q201
(M700R)
IC409
4
Q403
MUTE
ATT CONTROL
TO CD
Q401, 402
SECTION
FL
(Page 42)
12
Q410
RL
11
22
4
Q923
ILL
DET
X802 ACC
Q902
32kHz DET
Q918
Q917
POWER
X801
BATT
CONT
3.68MHz MD +B COM 8V
Q905, 919
Q901
POWER
CONT TU 8V
MD +B
Q924, 925
43
PJ401
–1
L
BUS AUDIO IN
–2
R-CH
R
–5
L
LINE OUT
FRONT
–6
R-CH
R
–3
L
LINE OUT
REAR
–4
R-CH
R
PJ402
–1
L
SUB OUT (MONO)
–2
R
POWER AMP
IC903 CNP901
1
5 FL+
9
FL–
3
2
9 RL+
10
RL–
7
MUTE
STBY
4
FR+
12
FR–
3
R-CH
RR+
11
RR–
13
ATT
14
ILL
7
ACC
15
TEST
5
POWER
AMP REM
6
CONT
ANT REM
Q461
F901
16
BATT
BATT
CDX-M700R/M750