Block Diagram -Main Section - Sony CDX-C90 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
4-3. BLOCK DIAGRAM — MAIN SECTION —
TUNER UNIT
TU701
(ANTENNA)
1 AM-ANT L-OUT 18
2 FM-ANT
R-OUT 16
FM+B
FM 8V 8
9 +B (FM/AM)
TU 8V
10 AM+B
AM 8V
AM-IFOUT 14
AM-DET.OUT 12
19
S-METER (FM/AM)
SD (FM/AM) 20
ST-IND 22
RECEIVE/SEEK 13
AM-IFCOUT 11
FM-IFCOUT 21
VCO (FM/AM) 6
DX/LCL 4
VT (FM/AM) 5
T E
L 1 3 9 4 2 2 9 6 5 1 3
WIDE/
NARROW 24
w w w
04
.
CN103 (1/2)
BUS AUDIO
IC771
IN
R-CH
MUTE
Q781
CONTROL
MUTE
Q791
R-CH
AM DECODER
IC851
AF.OUT L
IF IN
5 DET AMP 11 R-CH
AF IF L
7
Q703
PLL
IC721
13
IF.IN
D.OUT 6
15
AM.OSC
5
D.IN
16 FM.OSC
CLK 4
9 DX/LO
CE 2
LPF
18 PD
Q722
XI 1
X301
X721
32.768KHz
7.2MHz
XO 20
NARROW 7
X300
3.68MHz
NARROW
CONTROL
Q721
Q702
5V REG
FM 5V
9V REG
IC802
IC801
D804
VO
TU 8V 3 VIN 1 BATT
VC
2
FM ON
SITCH
FM 8V
Q804
D801
AM ON
AM 8V SITCH
Q805
BAND
SITCH
Q803
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INPUT SELECT/TONE/SUB VOLUME
IC102
-1 L-CH
39
-2 R-CH R-CH
40
33 30
41
42
1
CD SECTION
CD L-CH
32
SYSTEM CONTROL
IC300 (1/2)
16 21 22
SO
105
CKO 104
CE0 101
CE1
114 TUN ATT 102
CE2 103 R-CH
DIRECT 98
50 VSM
ATT 99
113 SD IN
BUZZER
112 FM STIN
D313,314
BEEP 15 DRIVE BZ300
110 SEEKOUT
(BUZZER)
Q300
LAT 17
DF SO 18
25 SI
CKO 19
26 SO
PLL
27 CKO
28 CE
61
DIMMER
73 X0A
Q Q
NOSE SW 12
3 7 6 3
FRONT
74 X0B
PANEL
(NOSE SWITCH)
92 X0
EL ON
93 SITCH
X1 DC +B BATT
Q408,411
BU IN
EL ON
4
BOOT DP 58 BOOT
ILL ON
10V REG
ILL ON 10V
10 WIDE
Q402,404,406
ILL ON 97
D424
PW ON 96
ANTREM
100
TEL ATT 79
ILLIN 78
ACC IN 81
TEST IN 56
MOT 9V
P MOT+ 29
P MOT– 30
109 AM ON
FM ON
108
I DET 31
7 OUT IN 3
Q605
u 1 6 3
MOTOR LOCK DET AMP
MOT 9V
IC601
.
MOTREF 40
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2 4
9 9 8
ELECTRONIC VOLUME
IC107(1/2)
IC104
9 11
TONE 26
RY101
IC107(2/2)
16 14
SUB
31
VOLUME
RELAY
DRIVE
Q303 3 6 2
IC105
MUTE
CONTROL
Q101
BACK-UP
CHECK ATT
Q900
AATT
DFLAT
CD ELECTRONIC
DFSO 2
SECTION LUMINESCENT LIGHT
DFCKO
EL1
PW ON
1 5 1 5 0 8 9 2 4
DISPLAY
SECTION 5V REG
BU 5V BATT
Q401
BATT
POWER ON
10V REG
P ON 10V
SITCH BATT
Q403
Q400,405
ANT REM
CONTROL
Q801,802
DIMMER
CONTROL
Q416
9V REG
IC602
3 VO VIN 1 BATT
VC
2
Signal Path
PANEL MOTOR DRIVE
D600 IC600
17 OPEN OUT1 8
CLOSE
19
m
M904
M
PANEL
6 RNF
MOTOR
MOTOR VREF
c o
OUT2 5
CONTROL VREF
20
Q601,603
– 60 –
CDX-C90
2
9 9
CN105
-1 L-CH
FRONT
LINE OUT
R-CH -2 R-CH
Q107
-3 L-CH
REAR
LINE OUT
R-CH -4
R-CH
Q106
-3 L-CH
CN103 (2/2)
SUB OUT
-4
R-CH R-CH
Q103
EL INVERTER DRIVE
DC +B
IC550,Q553–556
Q552
Q557
9 8 2 9 9
PN401
BATT BATT
CN403
4
AMP REM
5
ANT REM
TEL ATT
1
CONTROL TEL ATT
Q415
3
ILL
ACC
2
CHECK ACC
Q417
6
TEST
: FM
: AM
: CD