Sony CDX-CA900 / CDX-CA900X Service Manual ▷ View online
17
CDX-CA900/CA900X
Pin No.
Pin Name
I/O
Pin Description
89
VCC
—
Power supply pin (+5 V)
90
PF6 OPEN
—
Not used. (Open)
91 to 96
PF5 to PF0
O
Not used. (Open)
97
UNI SO
O
SONY bus data signal output
98
UNI SI
I
SONY bus data signal input
99, 100
VSS
—
Ground pin
101
UNI SCK
I
SONY bus clock signal input
102
NCO
O
Not used. (Open)
103
AVCC
—
Power supply pin for A/D, D/A converter
104
VREF
—
Reference voltage input for A/D, D/A converter
105 to 110
A40/AN0 to A45/AN5
I
Not used. (Connect to ground in this set.)
111
P46/AN6/DA0
I
Not used. (Connect to ground in this set.)
112
P47/AN7/DA1
I
Spectrum analyzer data signal input from electronic volume (IC301)
113
AVSS
—
Ground pin for A/D, D/A converter
114
VSS
—
Ground pin
115 to 122
P17 to P10
O
Not used. (Open)
123 to 125
MD0 to MD2
—
Mode pin
126 to 128
PG0 to PG2
O
Not used. (Open)
18
CDX-CA900/CA900X
3-2. CIRCUIT BOARDS LOCATION
MAIN board
LIMIT board
SUB board
DISC IN board
SUB (CD) board
LOAD board
KEY board
SERVO board
tuner unit
(TUX201)
(TUX201)
—
Key Board
—
1
4MHz
IC903
4
(XOUT)
4.6Vp-p
—
Main Board
—
1
2
32.768kHz
IC501
uf
(XOA)
4.332MHz
IC201
4
(OSC O)
2.2Vp-p
4.5Vp-p
3
3.68MHz
IC501
os
(XO)
3.8Vp-p
4
18.432MHz
IC701
ih
(EXTAL)
1.4Vp-p
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
2
3
IC1
ts
(PACK)
IC1
uj
(RFO)
1.5Vp-p
4
Approx. 100mVp-p
IC1
oa
(FEO)
0V
5
Approx. 100mVp-p
IC1
od
(TEO)
1.8Vp-p
16.9344MHz
IC1
wd
(XTAL)
5Vp-p
0V
3.3msec
19
19
CDX-CA900/CA900X
3-3. BLOCK DIAGRAM — CD SECTION —
(Page 20)
84
85
82
83
16
12
D/A
CONV
TRACKING
ERROR
FORCUS
ERROR
1
OSC
EFM
DEMOD
SERVO
CTL
RF
EQ
EQ
52
56
54
55
DSUB CODE
PROCESS
8
7
6
5
4
3
2
29
67
30
7
105
26
25
27
4
3
2
1
I/F
87
86
97
98
LD
DRIVE
Q1
FOCUS
COIL
DRIVE
TRACKING
COIL
DRIVE
SLED
MOTOR
DRIVE
SPINDLE
MOTOR
DRIVE
LOADING
MOTOR
DRIVE
6
5
23
2
15
16
17
18
13
14
11
12
9
10
26
62 63 64 65
35
32
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW1
(DISC IN)
SW2
(SELF)
SW3
(LIMIT)
SW4
(DOWN)
X1
16.9344MHz
OPTICAL PICK-UP
KSS-720A
I-V
CONV.
CDL
STB
AO
CD_TSO
64 CD_PACK
120 TSTB
CD TSI
CD TCK
CD_RST
RFOK
D SW
IN/PH2
SELFSW
LIMIT
LOAD
EJECT
CDM ON
106 CD ON
R-CH
TUNER
SECTION
A
23
24
M
M
M
BATT
SW5V
SW6V
5V
LOUT
ROUT
PACK
TSTB
TSI
TSCK
SI
RFOK
SO
SCK
STB
AO
RST
A
C
B
D
E
F
PD
LD
A
C
B
D
E
F
PD
A+5V
LD
APC
FCS-
FCS+
TRK+
TRK-
SL-
SL+
SP-
SP+
LD-
LD+
FOCUS
COIL
TRACKING
COIL
FD
TD
SD
MD
LOAD
EJECT
SYSTEM CONTROL
IC501 (1/3)
RF AMP,DIGITAL SERVO
DIGITAL SIGNAL PROCESSOR
IC1
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING MOTOR DRIVE
IC2
FD
TD
SD
MD
• Signal path
:CD
• R-ch is omitted due to
same as L-ch.
A+5V
AU+5V
D+5V
VCC
BU+5V
DR+6V
1
2
7
6
3
5
Q405
POWER SUPPLY
IC801
20
20
CDX-CA900/CA900X
CN201
(ANTENNA)
1
10
2
ANT AM
MPX
CDL
SAOUT
SACLK
8
AMDET
9
RDS
ANT FM
TUNER UNIT
TUX201
FM AMP
Q212
NOISE
CANCEL
IC202
Q211
12
9
14
13
19
20
17
37
50
56
7
6
SYSTEM CONTROL
IC501 (2/3)
16
14
S METER
VSM
NS MASK
QUALITY
VOL ATT
SM
SCL
SDA
LEVEL
MP IN
AM
MPX1
33 AC INL
38 AC OUTL
23 SA OUT
21 SACLK
12
SDA
70 I2CSIO
13
SCL
71 I2CCKO
17
SDA
10 E2PSIO
18
SCL
11 E2PCKO
RDS DECODER
IC201
FM DET
XO
XI
4
5
X201
4.332MHz
9
SDA
SCL 10
4
28
AUXL
OUT LF
43 MDL
ELECTRONIC VOLUME
IC301
27
OUT LR
24
OUT SW
36
9
AMP ON
5
ATT
55
BUS/AUX
41
ADSO2
40
ADSO1
109
TEL ATT
AMP ATT
110
ILL IN
117
ACC IN
73
X1A
74
X0A
108
TEST IN
83
PW ON
92
X0
93
X1
113
TUN ON
CD
SECTION
A
DISPLAY
SECTION
SECTION
B
Q306
GND SWITCH
Q391
Q308
Q310
15
BEEP
MUTE
CONTROL
Q843,844
12
5
3
11
22
4
9
7
POWER AMP
IC381
MUTE
STBY
16 AC-GND
CN101
FL+
FL–
RL+
RL–
TEL MUTE
ILL
ACC
TEST
FR+
13
14
7
15
4
10
2
9
1
12
3
11
BATT
FR–
RR+
RR–
5
AMP REM
6
ANT REM
19
17
18
16
B+
B+
X501
32.768kHz
X502
3.68MHz
ILLUM CHECK
Q102
POWER
CONT
Q104,105
POWER
CONT
Q106,107
ACC CHECK
Q101
POWER
CONT
Q801-803
Q103
R-CH
BATT
BATT
BATT
AUDIO+8.5V
TU +8.5V
POWER
CONT
Q201,202
AUDIO+8.5V
TU +5V
+5V REG
Q203
TU+8.5V
CN301
CN302
R
L
SUB OUT
–3
–4
R
L
AUDIO OUT
REAR
R-CH
–5
–6
R
L
AUDIO OUT
FRONT
R-CH
–1
–2
R
L
BUS AUDIO IN
R-CH
53
FL
RL
F901
• Signal path
: FM
: AM/MW
: CD
EEPROM
IC304 (2/2)
IC304 (1/2)
ADSO SWITCH
IC361
3
2
5
7
1
• R-ch is omitted due to
same as L-ch.
AEP, UK, E MODEL
3-4. BLOCK DIAGRAM — TUNER SECTION —
(Page 19)
(Page 21)
Ver 1.1
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