Block Diagram -Tuner Section - Sony CDX-M620 Service Manual

4-4. BLOCK DIAGRAM — TUNER SECTION —
CD
SECTION
(Page 34)
TUNER UNIT
TUX201
AJ1
AM ANT
1
(ANTENNA)
MPX
10
2 FM ANT AMDET 8
FM AMP
Q202
6
RDSDET 9
X201
4.3MHz
AEP,UK,E
S METER
14
SDA
12
SCL 13
SDA 17
EEPROM
SCL
18
• Signal path
• R-ch : same as L-ch.
ATT
4
ELECTRONIC VOLUME
CDL
IC305
4 28
AUXL OUT FL
43 MDL
IC310
38 ACOUTL
(Page 36)
5 7
33 AC INL
3
27
OUT RL
SA CLK 35 SA CLK
SA OUT 38 SA OUT
DISPLAY SECTION
13 MPX
11
AM
15 MP IN
IC310
14 S METER
20 SDA 3
24
SWR
21 SCL
17
QUAL
18 EXT ATT
SYSTEM CONTROL
IC501 (2/3)
31
VOL ATT
NOISE
CANCEL 7 50
QUALITY
IC201 Q203
56
NS MASK
RDS DECODER
ST-BY 55
IC202
TEL ATT 16
ILL IN 95
16 MPX SDA 9
81
4 SCL 10 ACC IN
OSCO
X1A 73
MPTH 2
5 OSCI 52 MPTH
DAVN 8 X0A 74
20 LV IN 75 DAVN
S-METER TEST IN 84
53
70 I2CSDA
PW ON 83
71 I2CSCL
X0 92
10 E2PSDA
93
X1
11 E2PSCL
TUN ON 114
: FM
: AM/MW
: CD
35
EXCEPT M670:US
IC304
3 1
Q301
M670:US
LINE
AMP
5 7
Q303
EXCEPT M670:US
1
Q305
MUTE
CONTROL
Q310,312
EXCEPT M670:US
M670:US
Q309 IC307
3 1
PRE
AMP
5 7
EXCEPT M670:US
Q406
ILLUM CHECK
Q407
X501
ACC CHECK
32.768kHz
Q405
POWER
X503
BATT
CONT AUDIO 9V
3.68MHz 9V
Q110,111
POWER
9V CONT TUNER 8V
Q107,108
POWER
CONT 1
BATT
Q306-308
8
REG
TUNER 5V
Q201
35
CDX-M620/M670
CN302
–1
L
BUS AUDIO IN
–2
R-CH
R
–5
L
AUDIO OUT
FRONT
–6
R-CH
R
–3
L
AUDIO OUT
REAR
–4
R-CH
R
CN301
L
SUB OUT (MONO)
R
POWER AMP
IC309 CN101
1
5 FL+
FL
12
9
FL–
3
2
9 RL+
RL
11
10
RL–
7
22 MUTE
4 STBY
4
FR+
12
FR–
3
R-CH
RR+
11
RR–
13
TEL MUTE
14
ILL
7
ACC
15
TEST
Q402
5
POWER
AMP REM
6
CONT
ANT REM
Q401
Q404
F901
16
BATT BATT
DC-DC
5 -11V
CONVERTER
IC306
+11V