Block Diagram -Tuner Section - Sony CDX-CA900 Service Manual

CDX-CA900/CA900X
Ver 1.1
Q Q
3 7 6 3 1 5 1 5 0
3-4. BLOCK DIAGRAM — TUNER SECTION —
CD
A
(Page 19)
SECTION
DISPLAY
B
(Page 21)
SECTION
TUNER UNIT
TUX201
CN201
ANT AM
1
(ANTENNA) MPX
10
AMDET
8
2 ANT FM
FM AMP
T E
L 1 3 9 4 2 2 9 6 5 1 3
RDS
9
X201
4.332MHz
S METER 14
SDA
12
SCL
13
SDA 17
EEPROM
SCL 18
w w w
ELECTRONIC VOLUME
IC301
4 AUXL
43 MDL
CDL
OUT LF
SACLK
21 SACLK
SAOUT 23 SA OUT
38 AC OUTL
IC304 (2/2)
IC304 (1/2)
3
1 OUT LR
33 AC INL
5 7 2
ADSO SWITCH
IC361
12 MPX1
9 AM
14 MP IN
13
LEVEL
AEP, UK, E MODEL OUT SW
19 SDA
20 SCL
Q212 17
SM
SYSTEM CONTROL
IC501 (2/3)
ADSO1
37
VOL ATT
ADSO2
NOISE
BUS/AUX
6 CANCEL 7 50
QUALITY
ATT
IC202 Q211
56
NS MASK
AMP ATT
AMP ON
BEEP
TEL ATT
ILL IN
RDS DECODER
IC201 ACC IN
X1A
SDA
16 FM DET 9
4 XO SCL 10
X0A
5
XI
TEST IN
PW ON
53 VSM X0
70 I2CSIO
71 I2CCKO
X1
TUN ON
10 E2PSIO
11 E2PCKO
• Signal path
: FM
: AM/MW
: CD
• R-ch is omitted due to
same as L-ch.
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y
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GND SWITCH
Q391
28
27
24
MUTE
CONTROL
Q843,844
40
41
55
5
9
Q Q
36
3 7 6
15
109
110
Q103
117
ILLUM CHECK
73
Q102
X501
ACC CHECK
32.768kHz
74
Q101
108
83
92
POWER
X502
CONT
AUDIO+8.5V BATT BATT
3.68MHz
93
Q801-803
113
POWER
TU +8.5V CONT
AUDIO+8.5V
BATT
Q201,202
+5V REG
TU +5V TU+8.5V
Q203
u 1 6 3
.
20 20
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2 4
8 9 9
CN302
–1
L
BUS AUDIO IN
–2
R-CH R
–5
L
AUDIO OUT
Q306
FRONT
–6
R-CH
R
–3
L
AUDIO OUT
Q308
REAR
–4
R-CH
R
CN301
L
SUB OUT
R
Q310 POWER AMP
IC381 CN101
1
5 FL+
FL
12
9
FL–
3
2
9 RL+
RL
11
10
7 RL–
22 MUTE
4 STBY
3 1 5 1 5 0 8 9 2
16 AC-GND
4
FR+
12
FR–
3
R-CH
RR+
11
RR–
13
TEL MUTE
14
ILL
7
ACC
15
TEST
5
POWER
AMP REM
6
CONT
ANT REM
Q104,105
19
BATT B+
17
POWER
CONT
F901
Q106,107
18
16
B+
m
c o
2
8 9 9
4 9 8 2 9 9