Block Diagram -Tuner Section - Sony CDX-4260R Service Manual

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4-3. BLOCK DIAGRAM — TUNER SECTION —
CNJ600
(ANTENNA)
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CD
SECTION
TUNER UNIT A
CD L-CH
TU601
ANT AM L
1 18
R 16 R-CH
2 ANT FM
AM DET 12
MUTE
Q101
FM+B 8
FM8V
TU+B 9 TU8V
AM+B 10
AM8V
SEEK 11
SD 20
ST/MONO 22
RV801
S-METER 19
FM RDS
S-METER
PLL
IC601
VT 5 LP OUT
28
LCL/DX 4 SCL 12
5 LCL/DX
SDA 13
14 IF AM
FM/AM IF 21 15 IF FM
VCO 6 24 FM IN
AM IN SSTOP 16
25
X601
9 OSC IN
10.25MHz
AM OSC
AM OSC 13
10 OSC OUT
Q614
RDS DECODER
IC602
20 S METER SDA 9
X602 4 XO SCL 10
4.3MHz
5 XI MPTH 2
AMP
FM DET 23 16 FM DET DAVN 8
Q618
NOISE
5 FILTER 1
FM8V
IC603
NOISE
RDS POWER
CONTROL
TU5V CONTROL RDS5V
Q804
Q604,605
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ELECTRONIC
VOLUME
IC401
OUT FL
22
12 CDL
MUTE
Q110
1 FML
OUT RL 20
28 SE3L
MUTE
SE3R
27 Q111
26 MUTE
24 SCL
25 SDA
D402
SYSTEM CONTROL
IC801 (2/3)
MUTE
62 TU ATT ATT 60 CONTROL
Q401,402
82 SEEK OUT X1A 73
X801
83 SD IN
32kHz
81 ST/MONO X0A 74
X0 92
X800
53 S-METER
3.68MHz
X1 93
58 VOL ATT
Q Q
3 7 6 3 1 5
AMP ON 56
AMP ATT 31
71 SCL
SDA TEL ATT 80
70
TEST 66
65 SSTOP
FM ON/ 68
AM ON
AM/FM POWER
MPDH
52
CONTROL
67 DAVN TU ON 69
Q610,612,615
TUNER POWER
+5V REG
+8V CONTROL
Q613
50 QUALITY
Q603,609
NS MASK
55
c o
.
23 23
2 4 2
9 8
PJ400
–1
L
LINE OUT REAR
–2
R-CH
R
POWER AMP
IC200
CNP501
1
5 FL+
12
9
3 FL–
2
9 RL+
11
10
RL–
7
4 22
1 5 0 8 9 2 4 9 8
Q916 13
ATT
15
TEST
5
AMP REM
AMP+B
6
ANT+B ANT REM
7
ACC ACC
16
BATT BATT
F901
FM 8V
AM 8V
• Signal path
: CD
TU 5V
: FM
TU 8V
: MW
m
CDX-4260R
9 9
2 9 9