Sony CDX-C90 Service Manual ▷ View online
CDX-C90
– 57 –
– 58 –
4-2. BLOCK DIAGRAM — CD SECTION —
59 RFDC
55 FE
57 TE
80 SSTP
89
PCMD
87
LRCK
85
WDCK
91
BCK
DIGITAL SERVO/
DIGITAL SIGNAL PROCESSOR
IC501
71 TFDR
72 TRDR
72 TRDR
73 FFDR
74 FRDR
69 SFDR
70 SRDR
79 MDP
3
PD1
4
PD2
7
E
6
F
17
RFO
16
FE
14
TE
CD5V
RF AMP, LD-APC ERROR AMP
IC1
OPTICAL PICK-UP
KSS-520A
2
PD
PD
LD
LD DRIVE
Q3
1
LD
19
LD ON
2
TR+
1
TR-
14 F+
13 F-
23
OP+
24
OP-
10
OP+
TRACKING
FOCUS
11
OP-
9
MUTE
20
OP+
19
OP-
OP IN+
OP IN-
TRACKING/FOCUS COIL DRIVE,
SLED MOTOR DRIVE
IC7
SPINDLE MOTOR DRIVE
IC601
16 S+
17 S-
M902
(SLED)
12 SRDT
3
SCOR
5
MCK
1
EXCK
2
SBSO
4
WFCK
EEPROM
IC551
11 SCLK
13 DQSY
9
DATI
10 LRCI
11 WDCI
7
BCKI
16
15
17
17
DRAM CONTROLLER
IC2
20
|
23
•
25
•
34
|
38
33
XOE
32
XCAS
27
XWE
26
XRAS
A0-A9
D1-D4
45
SDTI
84
C4M
33
DOUT
28
SCOR
27
XROF
3
C4M
2
7
1
2
2
3
4
5
5
6
1
2
3
4
5
6
8
9
10
11
12
13
14
7
8
8
9
10
11
12
13
14
DIN
59 SCOR
4
XROI
20
WFCK
7
EXCK
6
SBSO
8
SQCK
CLOK
9
SQSO
1
WFCK
42 XWRE
43 WRDE
44 XLT
10
SENS
11
SCLK
24
GFS
37
FOK
47 XSOE
48 SDTO
57 XQOK
58 GSCR
12
DATA
14
GRST
SCK
25
RFCK
21
GTOP
5
RFCK
6
GTOP
CDINL
DRAM
IC4
A0-A9
D1-D4
14
XTAI
LRCK
BCK
DATA
4
XRAS
3
XWE
23 XCAS
22 XOE
18
DOUT
M
12 DROUT+
13 DROUT-
M901
(SPINDLE)
25
24
M
M903
(LOADING)
M
INVERTER
9
L+
7
L-
2
LMOT1
4
LMOT2
LOADING MOTOR
DRIVE
IC6
X1
10MHz
TX
SW4
(DOWN)
SW3
(LIMIT)
SW1
(DISC IN)
SW2
(SELF)
28
|
31
67 CD DATA
42 SCLK
54 FOK
55 GFS
16
43
44
44
CD SYSTEM CONTROL
IC5
57 SENS
65 SCK 2
66 SI 2
20 LD ON
62 IN SW
63 SELF SW
14 LM EJ
15 LM LOM
31 X IN
32 X OUT
17 CDMON
18 CD ON
9
DRV OE
10 D SW
45
GRSRST
ESPSDT
ESPXQOK
EMPH O
46
68
69
69
70
ESPXLT
ESPXRDE
ESPXWRE
GRSCOR
71
56
48
48
49
DATA
CLK
SCOR
ESPXSOE
64
19
59
61
52
BUS SI
BUS ON
AMUT
CD CKO
CE
51
60
30
RESET
BU IN
BUS CLK
5
•
9
|
12
•
14
|
18
1
•
2
•
24
•
25
6
FP OPEN
7
FP CLOSE
EMPH
FP OP
PW ON
FP CL
21
CD RST
SWITCH
Q1, 5
5V REG
IC8
5V REG
IC11
BATT
BATT
BATT
MD 5V
CD5V
D/A 5V
BATT
BU5V
SWITCH
Q2, 4
VC
BUS SI
BUS ON
AATT
RESET
BU IN
BUS CLK
53
BUS SO
BUS SO
3
DISPLAY
SECTION
SECTION
Signal path
: CD
: DIGITAL OUT
: CD
: DIGITAL OUT
04
63
46
XRST 15
XRST
64
D/A CONVERTER
IC4
I-V CONVERTER
IC5
DIGITAL FILTER
IC1
L.P.F
IC6
44 DATAI
43 BCKI
45 LRCKI
1
D.IN.L
2
BCK.I
5
+10V
6
–10V
7
–5V
7
LE.I
DFDTOL
14
I.OUT
60
DFBCKO
23
DFLRCKO
24
DFDTOR
47
ATT
35 128FSO
46 INIT
1
P/C
2
VIN
R-CH
DFSO
MAIN
SECTION
2
MAIN
SECTION
1
48
SHIFT
DFCKO
49
LATCH
DFLAT
1
7
6
2
CLOCK GENERATOR
IC7
CF1
16.9344MHz
17
MCKIN
1
7
5
3
CLOCK GENERATOR
IC2(2/2)
DC/DC CONVERTER
DD1
X1
11.2896MHz
6
2
IC2(1/2)
GND ISOLATION
IC101
4
2
1
VIN
VC
VO
5V REG
IC9
D.F. 5V
4
2
1
VIN
VC
VO
9V REG
IC10
SERVO 9V
4
2
1
VIN
VC
VO
5V REG
IC109
AU +5V
DD +10V
–5V REG
IC108
AU –5V
DD –10V
DD –5V
59
CN2
(DIGITAL OUT)
2
1
MD 5V
– 59 –
– 60 –
CDX-C90
4-3. BLOCK DIAGRAM — MAIN SECTION —
LPF
Q722
FM 8V
TU 8V
AM 8V
L-OUT
R-OUT
AM-DET.OUT
S-METER (FM/AM)
SD (FM/AM)
ST-IND
AM-IFCOUT
FM-IFCOUT
VCO (FM/AM)
VT (FM/AM)
DX/LCL
RECEIVE/SEEK
TUNER UNIT
TU701
18
16
12
AM-IFOUT 14
AF.OUT L
11
19
50
98
112
113
13
20
22
22
11
21
21
6
5
4
13
41
42
40
30
16
DATA
21
CE
22
CLK
3
DFDI
6
CS
2
DFCKI
SUB
VOLUME
39
9
16
11
14
33
INPUT SELECT/TONE/SUB VOLUME
IC102
ELECTRONIC VOLUME
IC104
CN403
R-CH
X721
7.2MHz
X301
32.768KHz
X300
3.68MHz
SI
FM STIN
SD IN
VSM
SO
PLL
CKO
CE
CE
X0A
X0B
X0
X1
32
26
31
TONE
RY101
1
3
2
6
4
5
BUZZER
DRIVE
Q300
RELAY
DRIVE
Q303
MUTE
CONTROL
Q101
EL INVERTER DRIVE
IC550,Q553–556
Q703
R-CH
R-CH
CD SECTION
CD L-CH
16
9
110
15
IF.IN
AM.OSC
AM.OSC
FM.OSC
PD
DX/LO
SEEKOUT
XI
XO
D.OUT
NARROW
D.IN
CLK
CE
1
20
74
93
6
5
4
2
PLL
IC721
AM DECODER
IC851
25
26
27
26
27
28
73
7
92
SO
CKO
CE0
ATT
DIRECT
105
104
101
CE1
CE2
102
103
99
15
81
78
79
56
BEEP
AM ON
FM ON
FM ON
TEL ATT
96
PW ON
97
ILL ON
58
BOOT DP
61
DIMMER
12
NOSE SW
ANTREM
ILLIN
ACC IN
29
P MOT+
30
P MOT–
31
I DET
IN
TEST IN
SYSTEM CONTROL
IC300 (1/2)
IC300 (1/2)
17
LAT
18
SO
19
CKO
DFLAT
AATT
DFSO
DFCKO
PW ON
PW ON
TEL ATT
CONTROL
Q415
ACC
CHECK
Q417
DIMMER
CONTROL
Q416
ANT REM
CONTROL
Q801,802
5V REG
IC802
FM 5V
AMP REM
ANT REM
TEL ATT
ILL
ACC
TEST
BZ300
(BUZZER)
FM-ANT
AM-ANT
FM+B
+B (FM/AM)
AM+B
1
2
8
IF IN
5
AF IF L
7
9
10
WIDE/
NARROW 24
1
(ANTENNA)
PN401
BATT
BATT
04
Signal Path
: FM
: AM
: CD
R-CH
R-CH
Q107
Q106
Q103
Q557
FRONT
PANEL
PANEL
(NOSE SWITCH)
Q552
WIDE
10
Q702
IC771
DET AMP
FM ON
SITCH
Q804
9V REG
IC801
D804
D801
BATT
FM 8V
2
3
1
VIN
VC
VO
TU 8V
AM ON
SITCH
Q805
BAND
SITCH
Q803
AM 8V
POWER ON
SITCH
Q400,405
D313,314
109
108
100
17
8
OUT1
5
OUT2
PANEL MOTOR DRIVE
IC600
OPEN
CLOSE
19
RNF
6
VREF
20
D600
MOTOR VREF
CONTROL
Q601,603
M
M904
PANEL
MOTOR
OUT
18
NARROW
CONTROL
Q721
IC107(1/2)
IC107(2/2)
IC105
R-CH
9V REG
IC602
BATT
MOT 9V
MOT 9V
BATT
EL ON
SITCH
SITCH
Q408,411
BATT
BATT
2
3
1
VIN
VC
VO
7
3
MOTOR LOCK DET AMP
IC601
Q605
40
MOTREF
D424
10V REG
Q403
P ON 10V
5V REG
Q401
BU 5V
DC +B
BATT
10V REG
Q402,404,406
ILL ON 10V
DC +B
BOOT
EL ON
ILL ON
4
DISPLAY
SECTION
SECTION
2
CD
SECTION
ELECTRONIC
LUMINESCENT LIGHT
EL1
DF
CN103 (1/2)
BUS AUDIO
IN
R-CH
L-CH
R-CH
-1
-2
CN105
FRONT
LINE OUT
CN103 (2/2)
SUB OUT
L-CH
R-CH
-1
-2
REAR
LINE OUT
L-CH
R-CH
-3
-4
L-CH
R-CH
-3
-4
Q781
MUTE
R-CH
MUTE
CONTROL
Q791
114 TUN ATT
BACK-UP
CHECK ATT
Q900
BU IN
– 61 –
– 62 –
CDX-C90
4-4. BLOCK DIAGRAM — DISPLAY SECTION —
S630
(RESET)
Q309
SYSTEM CONTROL
IC300(2/2)
X500
14.74MHz
LCD
MODULE
24
14
D300,301
D312
KEYIN0
KEYIN1
KEYIN1
AD ON
KEY ACT
D374
21
57
77
RC IN1
ENC+
ENC–
75
RC IN0
RC IN1
ENC+
ENC–
ILL ON 10V
RC IN0
51
20
22
76
64
90
58
59
SIRCS
BUSON
UNISO
UNISI
UNICK
BU IN
SYSRST
RESET
41
LCD ANG
BUS SO
FP OP
FP CL
EMPH
BUS ON
BUS SI
BUS CLK
BU IN
RESET
RE IN1
RE IN0
DISPLAY CONTROL
IC500
94
13
87
15
17
17
64
36
LINK-OFF
2 SIRCS
3 SIRCS
3 SIRCS
UNI-SO
BUS-ON
UNI-SI
FP OPEN
UNI-CI
BU-IN
84 BU-IN
EXTAL
XTAL
POS2
POS3
POS0
BATT
CHECK
1
12
6
4
3
2
9
8
11
10
13
HIGH VOLT
CHECK
Q407
LED DRIVE
(AMBER/GREEN)
Q1,2
IR
RECEIVER
PH1
SIRCS
CONTROL
Q308
8
3
2
1
6
5
4
7
BATT
BATT
1
2
1
2
BU 5V
66
67
84
FP CLOSE
83
EMPH I
82
SYSRST
63
LCD-RX
14
EN1
ROTARY
ENCODER
2
P ON 10V
Q311
IC505
IC501
CNJ301
BUS INTERFACE
IC302
RESET
IC400
IC400
D406
D409
Q310
IC502
(BUS CONTROL IN)
ILL ON 10V
ILL ON 10V
S622
(10 DEG)
S623
(20 DEG)
106
107
S620
(OPEN END)
S621
(CLOSE END)
04
72
LWR
4
LCD-RST
7
LCD-ST
12
LCD-SO
16
LCD-CO
71
HWR
70
RD
100
A20
88
SRAM-CS
A0
A19
DISPLAY FLASH
IC503
11
26
28
DISPLAY SRAM
IC504
CE
R/W
OE
22
29
24
ROM-CS 91
CE
WE
OE
18
21
23
23
34
36
43
45
45
56
A0
A18
D0
D15
29
36
38
38
45
1
8
16
25
48
48
DQ0
DQ15
A0
A18
13
15
17
17
21
1
12
23
25
23
25
28
30
31
30
31
I/O1
I/O8
D8-D15
D0-D15
A1-A19
A0-A18
3
CD
SECTION
37
32
POS1
35
COLOR
13
BU 5V
ILL ON 10V
LED1–6,
9–30
(AMBER)
LED300,302
(OPEN END)
(OPEN END)
D3–6,9–12,
LSW1
LED7,8,
31–48
(GREEN)
52
53
53
2
6
1
7
KEY DET
IC304
CNJ300
(REMOTE IN)
S1–19,S1A,LSW1
5
3
4
6
2
CONTRUST
CONTROL
Q304,305
BOOT
EL ON
ILL ON
BOOTI
9
EL ON
6
ILL ON
5
4
MAIN
SECTION
LED DRIVE
Q301
BU 5V
55
RAMBU
68
EECLK
69
EEDATA
OUT
VDD
1
2
BU 5V
SRAM RESET
IC301
EECLK
EEDATA
EEPROM
IC303
6
5
BU IN
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