Sony CDX-L400X Service Manual ▷ View online
13
CDX-L400X
Pin No.
Pin Name
I/O
Pin Description
52
RFOK
I
CD RFOK signal input
53
CD_RST
O
CD reset signal output
54
A0
O
CD command/parameter signal output
55
STB
O
CD strobe signal output
56
X_EN
O
CD crystal oscillator control output
57
LIMIT
I
CD limit switch input
58
PH1
I
Not used. (Fixed at H in this set)
59
D_SW
I
CD down switch input
60
INSW
I
CD disc in switch input
61
NC (PH3)
—
Not used. (Fixed at H in this set)
62
CD_LM_LO
O
Loading motor control output (Loading direction)
63
CD_LM_EJ
O
Loading motor control output (Eject direction)
64
NC
—
Not used. (Open)
65
NC
—
Not used. (Open)
66
AMPATT
O
Power amplifier attenuator control output
67
AMPON
O
Power amplifier standby control output
68
CDMD_ON
O
CD mechanism power control output
69
ATT
O
System attenuate control output
70
VOLATT
O
Electronic volume attenuate control output
71
NC
—
Not used. (Open)
72
NC
—
Not used. (Open)
73
NC
—
Not used. (Open)
74
NC
—
Not used. (Open)
75
NC
—
Not used. (Open)
76
NC
—
Not used. (Connect to ground in this set)
77
NC
—
Not used. (Connect to ground in this set)
78
DIMSEL
—
Not used. (Open)
79
XCD_ON
O
CD power control output
80
TU-ATT
—
Not used. (Open)
81
NC
—
Not used. (Open)
82
NC
—
Not used. (Open)
83
NC
—
Not used. (Open)
84
NC
—
Not used. (Open)
85
NC
—
Not used. (Open)
86
E2P_SIO
I/O
EEPROM serial data input/output
87
E2P_CKO
O
EEPROM serial clock output
88
NC
—
Not used. (Open)
89
FLASH_W
I
Flash write input
90
NS_MASK
O
Noise detection output
91
AD_ON
O
Key power control output
92
NC
—
Not used. (Open)
93
ILLON
O
Illumination power control output
94
DOORSW
I
Not used. (Connect to ground in this set)
95
DAVSS
—
Ground for D/A converter.
96
NC
—
Not used. (Open)
97
NC
—
Not used. (Open)
98
RCIN1
I
Rotary commander input 1 (Fixed at L in this set)
99
RAMBU
—
Not used. (Connect to ground in this set)
100
DAVDD
—
D/A converter power supply pin (+5 V)
14
CDX-L400X
3-2. CIRCUIT BOARDS LOCATION
MAIN board
SUB board
LIMIT board
DISC IN board
LOAD board
KEY board
SERVO board
tuner unit
(TU10)
(TU10)
32.768kHz
IC501
qh
(XOUT)
— Main Board —
1
2
3
18.432MHz
IC501
qs
(OSCOUT)
5.2Vp-p
4.332MHz
IC51
4
(OSCO)
5.2Vp-p
3.6Vp-p
IC1
uj
(RFO)
• Waveforms
— Servo Board —
— Servo Board —
(MODE: CD PLAY)
1
2
3
IC1
ts
(PACK)
0V
1.8Vp-p
16.9344MHz
IC1
wd
(XTAL)
0V
4
Approx. 620mVp-p
IC1
oa
(FEO)
5
Approx. 200mVp-p
IC1
od
(TEO)
2.4Vp-p
4.8Vp-p
3.4msec
15
15
CDX-L400X
3-3. BLOCK DIAGRAM — CD SECTION —
(Page 16)
82
83
84
85
16
12
D/A
CONV
TRACKING
ERROR
FORCUS
ERROR
9
1
OSC
EFM
DEMOD
SERVO
CTL
RF
EQ
EQ
52
56
DSUB CODE
PROCESS
8
7
6
5
4
3
2
56
60
30
57
59
68
79
31
51
21
22
23
55
54
53
52
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
63
62
33
POWER
CONTROL
Q332
POWER
CONTROL
Q333
REG
Q331
REG
Q341
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW3
(LIMIT)
SW2
(SELF)
SW4
(DOWN)
SW1
(DISC IN)
X1
16.9344MHz
OPTICAL PICK-UP
(KSS-720A)
I-V
CONV.
CDL
CD PACK
TSTB
STB
AO
CD TSO
CD TSI
CD TCKO
CD RST
RFOK
XEN
IN SW
LIMIT
CD SELF SW
D SW
CD LM LO
CD LM EJ
CDMD ON
XCD ON
R-CH
TUNER
SECTION
A
23
24
M
M
M
IC602
BU 5V
BATT
LOUT
ROUT
PACK
TSTB
SI
RFOK
SO
SCK
STB
AO
XTALEN
RST
RESET
A
C
B
D
E
F
PD
LD
A
C
B
D
E
F
PD
LD
LD AMP
FOCUS
COIL
TRACKING
COIL
FD
FSC+
FSC-
TRK+
TRK-
SL-
SL+
SP-
SP+
LD-
LD+
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.
A5V
AU5V
D5V
DR6V
+
-
+
-
+
-
1
S702
RESET
RESET
3
16
16
CDX-L400X
3-4. BLOCK DIAGRAM — TUNER SECTION —
(Page 15)
J10
(ANTENNA)
J401
AUDIO
OUT
REAR
2
10
1
ANTFM
MPX
CDL
8
AM DET
14
S-METER
12
I2C SDA
13
I2C SCL
9
RDS DET
17
E2PROM SDA
18
E2PROM SCL
ANTAM
TUNER UNIT
TU10
FM BUFFER
Q21
NOISE
SUPPRESSOR
6
1
IC20
Q22
NOISE
SUPPRESSOR
ON
7
90
2
45
47
70
14
15
20
21
18
11
13
1
30
SYSTEM CONTROL
IC501 (2/3)
ELECTRONIC VOLUME
IC401
OUT FL
29
OUT RL
35
BEEP
ATT
67
69
AMP ON
66
AMP ATT
40
TEL ATT
38
ACC IN
SE L
MPX
AM
LEVEL
MPIN
SDA
SCL
SM
VOL ATT
QUALITY
NS MASK
VSM
I2C SIO
I2C CKO
MPTH
DAVN
E2P SIO
E2P CKO
CD
SECTION
A
MUTE
CONT
Q478,479
Q451
MUTE
Q431
MUTE
22 MUTE
4 STBY
16 AUX
11
12
5
3
9
7
POWER AMP
IC404
1
9
2
10
CNP601
FL+
FL
-
RL+
RL
-
4
12
FR+
FR
-
3
11
RR+
RR
-
16 BATT
13 ATT
6 ANT REM
R-CH
BATT
F901
TEL
ATT
ATT
Q651
7 ACC
15 TEST (NC)
49
50
TUN ON
37
TEST IN
ACC
CHECK
Q631
POWER SUPPLY
IC601
3
PW ON
28
BU IN
4
2
7
BATT
BATT
BATT
VCC
8
ANT+B
5 AMP REM
6
AMP+B
9
COM 8V
10
TU 5.6V
11
TU 8.7V
COM 8V
5
BU+B
BU 5V
TU 5.6V
TU 8.7V
R-CH
8.7V ON
5.6V ON
STB
9
20
2
10
MULTI
PATH
DET
LV IN
16
4
5
8
RDS/RDBS
DEM/DEC
8
27
MPX
OSCO
OSCI
SDA
SCL
X51
4.332MHz
87
86
RDS DECODER
IC51
Signal path
: FM
R-ch is omitted due to same as L-ch.
: MW
: CD
BATT DET
Q551,557
BATT DET
Q556
-1
L
-2
R
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