Block Diagram -Tuner Section - Sony CDX-3900R Service Manual

CDX-3900R/4000R/4000RX
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3 7 6 3 1 5 1 5 0
T E
L 1 3 9 4 2 2 9 6 5 1 3
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3-3. BLOCK DIAGRAM — TUNER SECTION —
TUNER UNIT
TU1
(Page 21)
J1
ANTFM MPX
2 10
(ANTENNA)
1 ANTAM AM DET 8
IF AM
19
BUFFER
Q1
S-METER 14
I2C SDA 12
I2C SCL
13
20
RDS DET 9 16
FM AGC 4
E2PROM SDA 17
E2PROM SCL 18
04
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ELECTRONIC VOLUME
IC151
A
OUT LF 30
CD
CDL 1 SEL
SECTION
13 MPX OUT LR 29
11 AM
AM IF
12
Q111 Q121
14 LEVEL
MUTE MUTE
15 MPIN
20 SDA
21 SCL
18 SM
MUTE
SYSTEM CONTROL
CONT
IC501 (2/3)
Q131
VOL ATT
57 BEEP 16
IC90
56 TUN ATT AMP ON 59
NOISE
5 1 50 QUALITY AMP MUTE 60
DET
79
TEL ATT
Q90
32 NS MASK
NOISE ON ACC IN 82
Q Q
3 7 6
TEST IN 81
53 VSM
I2C SIO
70
71 I2C CKO
9 10
RDS DECODER
SDA SCA 1
IC51 TU ON
MULTI
LV IN
PATH 2 52 MPTH PW ON 120
DET
MPX RDS/RDBS
8 64 DAVN
DEM/DEC
OSCO OSCI
4 5
X51
4.332MHz
51 FM AGC
9 E2P SIO
10 E2P CKO
u 1 6 3
22 22
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2 4
8 9 9
CNJ151
AUDIO OUT REAR
–1 –2
L R
POWER AMP
IC611
5
12
3
9
11
8
Q181 Q171
16 AUX IN
MUTE MUTE
4 STAND BY
R-CH
22 MUTE
MUTE
CONT
B
Q621, 622 BATT
CD
ATT
SECTION
(Page 21)
TEL
ATT
Q571
ACC
CHECK
Q661
3 1 5 1 5 0 8 9
POWER SUPPLY
IC671
BATT 7 VCC AMP +B 6
2 8.7V ON ANT +B 8
3 5.6V ON
5
BU +B BU 5V
4 STB COM 8V 9 COM 8V
TU 5.6V 10 TU 5.6V
TU 8.7V 11 TU 8.7V
• Signal path
:FM
:MW
:CD
m
c o
.
2
8 9 9
CN601
1
FL+
9 FL–
2
RL+
10 RL–
4 FR+
12 FR–
3
RR+
11 RR–
16 BATT
F901
4000R/4000RX
13 ATT
7 ACC
2 4 9 8 2 9 9
15 TEST
5 AMP R
6 ANT R