Sony CDX-L350 / CDX-L450X / CDX-L470X / CXS-2100 Service Manual ▷ View online
17
CDX-L350/L450X/L470X
4-1. IC PIN DESCRIPTION
• IC801 µPD780024AGK-B26-9ET (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Pin Description
1
D SW
I
Down switch detection input
2
IN SW
I
Disc in switch detection input
3
PH3
I
PH3 detection input (Not used in this set)
4
LM LD
O
Loading motor drive output (Loading)
5
LM EJ
O
Loading motor drive output (Eject)
6
A ATT
O
Power amplifier mute control output
7
ATT
O
Line out mute control output
8
BEEP
O
BEEP output
9
VSSO
—
Ground
10
VDDO
—
Power supply pin (+5 V)
11
VOL CLK
O
Electric volume clock output
12
VOL DO
O
Electric volume data out output
13
VOL CE
O
Electric volume chip enable output
14
AM ON
O
Tuner AM power supply control output
15
FM ON
O
Tuner FM power supply control output
16
NOSE
I
Front panel attachment detection input
17
PLL DI
I
PLL IC data input
18
LCD DO
O
LCD data output
19
LCD CE
O
LCD chip enable output
20
LCD CLK
O
LCD clock output
21
PLL CLK
O
PLL IC clock output
22
PLL DO
O
PLL IC data output
23
PLL CE
O
PLL IC chip enable output
24
VDD1
—
Power supply pin (+5 V)
25
AVSS
—
Ground
26
ST IND
I
FM STEREO detection input
27
FUN SEL
I
Function select input
28
S METER
I
S meter signal input
29, 30
KEY0, 1
I
A/D key input 0, 1
31
TEL ATT
I
Attenuator signal input
32
DST SEL
I
Destination select input
33
TEST
I
Force test mode input
34
AVREF
—
A/D converter power supply pin (+5 V)
35
AVDD
—
A/D converter power supply pin (+5 V)
36
RESET
I
Reset input
37
XT2
O
Sub clock output (32.768 kHz)
38
XT1
I
Sub clock input (32.768 kHz)
39
IC
—
Connect to Ground in this set.
40
X2
O
Master clock output (8.38 MHz)
41
X1
I
Master clock input (8.38 MHz)
42
VSS1
—
Ground
43
KEY ACK
I
Key acknowledge detection input
44
SIRCS
I
SIRCS input
45
SELF SW
I
Self switch detection input
46
BU IN
I
Backup power supply detection input
47
AD ON
O
Key power supply control output
48
ILL ON
O
Illumination power supply control output
49
AMP ON
O
Amplifier remote power supply control output
50
CDM ON
O
CD mechanism deck power supply control output
51
XCD ON
O
CD DSP IC 16 MHz X’tal ON/OFF control output
52
TU ON
O
Tuner power supply control output
SECTION 4
DIAGRAMS
18
CDX-L350/L450X/L470X
Pin No.
Pin Name
I/O
Pin Description
53
P.ON
O
System power supply control output
54
X SO
O
CD DSP IC serial data output
55
X SI
I
CD DSP IC serial data input
56
X SCK
O
CD DSP IC serial clock output
57
RFOK
I
CD servo IC RFOK signal input
58
X RST
O
CD DSP IC reset control output
59
ACC IN
I
Accessory power supply detection input
60
AO
O
CD servo IC command/pallameter discrimination signal output
61
STB
O
CD servo IC data strobe signal output
62
XEN
O
CD DSP IC X’tal control output
63
L SW
I
Limit switch detection input
64
PH1
I
PH1 detection input (Not used in this set)
19
19
CDX-L350/L450X/L470X
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
54
55
DSUB CODE
PROCESS
8
7
6
5
4
3
2
62
1
45
2
63
50
51
54
55
56
61
60
58
57
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
5
4
36
POWER
CONTROL
Q905,906
POWER
CONTROL
Q921
REG
Q907,D908
REG
Q910,D910
M902
(SLED)
M901
(SPINDLE)
M903
(LOADING)
SW3
(DISC IN)
SW2
(SELF)
SW4
(LIMIT)
SW1
(DOWN)
X1
16.9344MHz
OPTICAL PICK-UP
KSS-720A
I-V
CONV.
CDL
STB
A0
X_SO
X_SI
X_SCK
X_RST
RFOK
XEN
D_SW
IN_SW
SELF_SW
L_SW
LM _LO
LM_ EJ
CDM ON
XCD_ON
R-CH
MAIN
SECTION
A
23
24
M
M
M
1
RESET
S901
RESET
2
IC902
U_COM+5V
BATT
D909
LOUT
ROUT
PACK
TSTB
TSI
TSCK
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
APC
FCS-
FCS+
TRK+
TRK-
SL-
SL+
SP+
SP-
LD-
LD+
FOCUS
COIL
TRACKING
COIL
FD
TD
SD
MD
LOAD
EJECT
SYSTEM CONTROL
IC801(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
A_5V
AU_5V
D_5V
DR_6V
4-2. BLOCK DIAGRAM — CD SECTION —
(Page 20)
20
20
CDX-L350/L450X/L470X
CNJ601
(ANTENNA)
2
16
1
FM_ANT
L-CH
17
R-CH
CDL
24
DET_OUT
11
FM/AM_OSC
14
AM_VT
6
FM_VT
20
IF_CONT
19
OSC-IN
21
12
9
S_METER
TU+B
22
SD/ST_IND
FM_VCC
AM_VCC
PLL VCC
AM_ANT
TUNER UNIT
TU601
11
12
13
2
1
36
17
21
18
14
5
SYSTEM CONTROL
IC801 (2/3)
PLL
IC601
ELECTRONIC VOLUME
IC401
LF OUT
4
33
34
LR OUT
RF OUT
R-CH
RR OUT
8
BEEP
ATT
53
7
P.ON
6
A_ATT
31
TEL ATT
59
ACC IN
L5
L1
L2
R2
CE
DI
CL
VOL_CLK
VOL_DO
VOL_CE
17
22
21
PLL_DI
PLL_DO
PLL_CLK
23 PLL_CE
LCL
Q601
D601
DST_SEL
S_METER
FM 200k
AM 10k
FM 50k
AM 9k
FREQUENCY
SELECT
FM POWER
CONTROL
Q605,606
SW801
L350
L450X/L470X
SD_IND
AUDIO OUT REAR
CD
SECTION
A
MUTE
CONT
Q401,402
Q102
MUTE
R-CH
DELAY
BATT
BATT
Q909
BATT
D402
Q101
MUTE
22 MUTE
4 STBY
16 AUX-IN
11
12
5
3
9
7
POWER AMP
IC101
1
9
2
10
CNP501
R-CH
PJ401
FL+
FL-
RL+
RL-
4
12
FR+
FR-
3
11
RR+
RR-
16 +B (BATT)
13 ATT
5 AMP REM
6
8
19
ANT REM
GND
R-CH
F901
10A
TELEPHONE
MUTE
Q901
7 ACC
15 TEST
33
TEST
AMP_ON
ACC
CHECK
Q902
32
26
28
(
)
17
18
L
R
• Signal path
:FM
:AM
:CD
ANT REMOTE
CONTROL
Q911,917
BACK-UP CHECK
Q903,904,D906,907
TUNER+8V REG
Q912,913,D913
COM+8V REG
Q918,919,929,D923
U_COM+5 V REG
Q920,D930,D999
Q920,D930,D999
U_COM+5V
COM+8V
TU+B
R-CH
8
FM_VCO
15
AM_VCO
16
FM_CP
18
VT
19
AM_CP
20
OSC
2
SEEK
XO
XI
10
IFC
13
MONO
11
24
1
CE 3
CK 5
D_IN 4
D_OUT 6
X601
10.25MHz
4
3
AM_DX/LCL
FM_DX/LCL
52
TU_ON
46
BU_IN
15
FM_ON
14
AM_ON
49
AM POWER
CONTROL
Q603,604
TUNER
+5V REG
Q602,D604
4-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 19)
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