1

Model Name Using Similar MechanismCDX-L250/L430XNEW

CD Drive Mechanism TypeMG-393X-121//KMG-393XA-121//K

Optical Pick-up Name KSS-720A

SERVICE MANUAL US ModelCanadian Model

CDX-L300

E ModelCDX-L460X

CDX-L300/L460X

FM/AM COMPACT DISC PLAYER

Photo: CDX-L460X

• The CD sections have no adjustments.

AUDIO POWER SPECIFICATIONS (US Model)POWER OUTPUT AND TOTAL HARMONIC DISTORTION22 watts per channel minimum continuous average power into4 ohms, 4 channels driven from 20 Hz to 20 kHz with no morethan 5% total harmonic distortion.

CD player sectionSignal-to-noise ratio 90 dBFrequency response 10 – 20,000 HzWow and flutter Below measurable limitLaser Diode Properties (CDX-L300)

Material GaAlAsWavelength 780 nmEmission Duration ContinuousLaser output power Less than 44.6 µW*

* This output is the value measured at a distanceof 200 mm from the objective lens surface on theOptical Pick-up Block.

Tuner sectionFMTuning range CDX-L300:

87.5 – 107.9 MHzCDX-L460X:FM tuning interval:50 kHz/200 kHzswitchable87.5 – 108 MHz(at 50 kHz step)87.5 – 107.9 MHz(at 200 kHz step)

Antenna terminal External antenna connectorIntermediate frequency 10.7 MHzUsable sensitivity 11 dBfSelectivity 75 dB at 400 kHzSignal-to-noise ratio 65 dB (stereo),

68 dB (mono)

SPECIFICATIONS

Harmonic distortion at 1 kHz0.7% (stereo),0.5% (mono)

Separation 33 dB at 1 kHzFrequency response 30 – 15,000 Hz

AMTuning range CDX-L300:

530 – 1,710 kHzCDX-L460X:AM tuning interval:9 kHz/10 kHzswitchable531 – 1,602 kHz(at 9 kHz step)530 – 1,710 kHz(at 10 kHz step)

Antenna terminal External antenna connectorIntermediate frequency 10.7 MHz/450 kHzSensitivity 30 µV

Power amplifier sectionOutputs Speaker outputs

(sure seal connectors)Speaker impedance 4 – 8 ohmsMaximum power output 45 W × 4 (at 4 ohms)

– Continued on next page –

Ver 1.0 2001. 11

9-873-402-012001K0400-1

© 2001. 11

Sony Corporatione Vehicle Company

Published by Sony Engineering Corporation

21 21

CDX-L300/L460X

84

85

82

83

1612

D/ACONV

TRACKINGERROR

FORCUSERROR

9

1

OSC

EFMDEMOD

SERVOCTL

RFEQ

5256

5455

DSUB CODEPROCESS

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

LDDRIVE

Q1

FOCUSCOIL

DRIVE

TRACKINGCOIL

DRIVE

SLEDMOTORDRIVE

SPINDLEMOTORDRIVE

LOADINGMOTORDRIVE

6

5

23

2

15

16

17

18

13

14

11

12

9

10

26

62 63 64 65

5

4

36

POWERCONTROLQ905,906

POWERCONTROL

Q921

REGQ907,D908

REGQ910,D910

M902(SLED)

M901(SPINDLE)

M903(LOADING)

SW3(DISC IN)

SW2(SELF)

SW4(LIMIT)

SW1(DOWN)

X116.9344MHz

OPTICAL PICK-UPKSS-720A

I-VCONV.

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

MAINSECTION

A

23 24

M

M

M

1 RESET

S581(RESET)

2

IC902

U_COM+5V

BATT

D909

LOUTROUT

PACKTSTB

TSITSCK

SI

RFOK

SO

SCK

STB

AO

XTALEN

RST

RESET

A

C

B

D

E

F

PD

LD

B

D

A

C

E

F

PD

A5V

LD

APC

FCS-

FCS+

TRK+

TRK-

SL-

SL+

SP+

SP-

LD-

LD+

FOCUSCOIL

TRACKINGCOIL

FD

TD

SD

MD

LOAD

EJECT

SYSTEM CONTROLIC801(1/3)

RF AMP,DIGITAL SERVODIGITAL SIGNAL PROCESSOR

FOCUS/TRACKING COIL DRIVE,SLED/SPINDLE/LOADING MOTOR DRIVE

FD TD SD MD

• Signal path

:CD

• R-ch is omitted due to

same as L-ch.

A_5V

AU_5V

D_5V

DR_6V

IC1(MG-393X-121//K) IC1(MG-393XA-121//K)

IC2(MG-393X-121//K) IC2(MG-393XA-121//K)

3-2. BLOCK DIAGRAM — CD SECTION —

(Page 22)

2222

CDX-L300/L460X

3-3. BLOCK DIAGRAM — TUNER SECTION —

(Page 21)

CNJ601(ANTENNA) 2 16

1

FM_ANT L-CH17R-CH

CDL

24DET_OUT

11FM/AM_OSC

14AM_VT6FM_VT

20IF_COUNT19OSC-IN

21

12

9

S_METER

TU+B

22SD/ST_IND

FM_VCC

AM_VCC

AM_ANT

TUNER UNITTU601

111213

2136

1721

18

14

5

SYSTEM CONTROLIC801 (2/3)

PLLIC601

ELECTRONIC VOLUMEIC401

LF OUT

4

3334

LR OUT

RF OUTR-CH

RR OUT

8BEEPATT

53

7

P.ON6A_ATT

59ACC IN

L5

L1

L2R2

CEDICL

VOL_CLKVOL_DOVOL_CE

172221

PLL_DIPLL_DOPLL_CLK

23 PLL_CE

LCL

DST_SEL

S_METER

FM 200kAM 10k

FM 50kAM 9k

FREQUENCYSELECT

FM POWERCONTROLQ605,606

SW801

L300 L460X

SD_IND

AUDIO OUT REAR

CDSECTION

A

MUTECONT

Q401,402

Q102MUTE

R-CH

DELAY BATT

BATT

Q909

BATT

D402

Q101MUTE

22 MUTE4 STBY

16 AUX-IN

11

1253

97

POWER AMPIC101

19

210

CNP501

R-CH

PJ401

FL+FL–

RL+RL–

412

FR+FR–

311

RR+RR–

16 +B (BATT)

5 AMP REM

6

8

17

ANT REM

GND

R-CH

F90110A

7 ACC

15 TEST33TEST

AMP_ON

ACCCHECKQ902

32

13•

25FM/AM_VCC

2628

( )

19

18

L

R

• Signal path

:FM

:AM

:CD

• R-ch is omitted due to

same as L-ch.

AMP POWERCONTROLQ911,917

BACK-UP CHECKQ903,904,D906,907

TUNER+8V REGQ912,913,D913

COM+8V REGQ918,919,929,D923

U_COM+5 V REGQ920,D930,D999U_COM+5V

COM+8V

TU+B

R-CH

8

FM_VCO15AM_VCO16

FM_CP18VT19AM_CP20

OSC2SEEK XO

XI

10IFC13MONO11 24

1

CE 3CK 5

D_IN 4D_OUT 6

X60110.25MHz

3AM_DX/LCL

52TU_ON

46BU_IN

15FM_ON

14AM_ON

49

AM POWERCONTROLQ603,604

23

CDX-L300/L460X

3-4. BLOCK DIAGRAM — DISPLAY SECTION —

KEY MATRIXS501-511,S512-521

KEYACTIVEQ916

X80232.768kHz

37

38

40

41

2918201930

43

47

SYSTEM CONTROLIC801 (3/3)

LCD DRIVEIC551

KEY 0DATACLKCE

LCD DOLCD CLK

LCD CE

ILL POWERCONTROLLER

Q914

INITIALRESETD552

SWITCHQ915

ILL + B

KEY 1KEY 1

KEY 0

KEY ACK

AD ON

XT2

XT1

X2

48ILL ON

BATT

X1

X8018.38MHz LED501-504

D561-581

LCD BACKLIGHT

626160

COM1

COM2

LCDLCD501

D914

( )

KEYILLUMINATION( )

64•

63

1|

23•

25|

53

•

SEG1

SEG52|

DATACLKCE

ILL+B

57

INH

24

CDX-L300/L460X

3-5. CIRCUIT BOARDS LOCATION

MAIN board

tuner unit (TU601)

DISPLAY board

SERVO board

IN SELF SW boardSPEAKER board

SL SW board

• Waveforms— Servo Board —

(MG-393X-121//K)(MODE: CD PLAY)

1

2

3

IC1 ts (PACK)

IC1 uj (RFO)

1.2Vp-p

4

Approx. 1Vp-p

IC1 oa (FEO)

0V

5

Approx. 400mVp-p

IC1 od (TEO)

4.4Vp-p

16.9344MHz

IC1 wd (XTAL)

3Vp-p

0V

22.7µsec

• Waveforms— Servo Board —

(MG-393XA-121//K)(MODE: CD PLAY)

1

2

3

IC1 ts (PACK)

IC1 uj (RFO)

1.2Vp-p

4

Approx. 1Vp-p

IC1 oa (FEO)

0V

5

Approx. 400mVp-p

IC1 od (TEO)

4.4Vp-p

16.9344MHz

IC1 wd (XTAL)

3Vp-p

0V

22.7µsec

— Main Board —

1

2

32.768kHz

IC801 ej (XT2)

3.8Vp-p

5Vp-p

8.38MHz

IC801 r; (X2)

25 25

CDX-L300/L460X

3-6. SCHEMATIC DIAGRAM • Refer to page 24 for Waveforms.

— CD MECHANISM SECTION (MG-393X-121//K) — • Refer to page 36 for IC Block Diagrams.

IC B/D

IC B/D

(Page 33)

Note:• Voltage and waveforms are dc with respect to ground

under no-signal (detuned) conditions.no mark : CD PLAY

3030

CDX-L300/L460X

IC B/D

IC B/D

TP77TP78

R29R30

C43

TP79TP80

TP81TP82TP83TP84

CN2

CN3

TP85

M902

M901

SW2 TP4TP2

TP3

M903

TP87

TP86

TP9 TP8

R3 R26

C4

TP10

C13

R5

C11

C10

C8

TP7

TP92

R6TP17TP20TP16TP19

R25TP21TP18

R24

R7

TP6

C17

FB1

TP11

TP12 C9

C14

TP89

C19

C20 C23

R9

R8 TP

22TP

23TP

24TP

25

TP88

FB4

C26

TP32

R14

R15

TP30

R12

R10

TP91 C37

TP90

TP29

TP28TP26

TP27

R21

R22

TP34TP35

TP36

TP46

TP37TP38TP39TP40

TP41TP42TP43TP44TP45

C35

FB2

CN1

R18

R19

R20

R17

TP66

FB7

FB6

TP62TP47TP63TP48

TP49TP64TP50

TP51

TP52TP68TP53TP69TP54TP70TP55TP71TP56TP72TP57TP73TP58TP74TP59TP75TP60TP76TP61

X1

SW3

SW4

CN13

Q1

C18

IC2

FB3

IC1

SW1

TP1TP5

C44

C40

C1 C5 C3 C6

C15

C16

C24

C38

C36

C25

C29

C34

C45

C27C4

1

C22

C21

C30

(Page 33)

Note:• Voltage and waveforms are dc with respect to ground

under no-signal (detuned) conditions.no mark : CD PLAY

3-9. SCHEMATIC DIAGRAM • Refer to page 24 for Waveforms.

— CD MECHANISM SECTION (MG-393XA-121//K) — • Refer to page 36 for IC Block Diagrams.

3232

CDX-L300/L460X

IC B/D

IC B/D

C604 C605

C608

C627

R605

R601

R603

R602C606

C603

C609

C610

L603

C612C613

R607C615

C619

R609

C621

R616R617

R618

X601C623

C622

C611

R606

C204R210

R208

R110C104R108

R107

R109C103

C105

C205

R105

R206

R106

C432

R612

R613

R619 C631

C626

C624L604

C118

C218

C217

C216C215

C213C211R215

R213C208

C435

C101

C102

C202

C201R401

C426

R407

C110R113

C116

C117

C111C113

C119

R716 R714

R906

D90

3

D90

4 C902

R90

1

D901

L901R620

R622

R628

C108

R604

CNJ601

R205

CNP501

C633

PJ401

R209

R207

JR10

1C407

Q603

C841C842

Q605

C625

R610

C618C617 R608

C614

D401

C214C114

C706

C707

C901

D444

R444

R410

D402

Q101

Q102

Q201

Q202

C203

R404

C115

R115

L601

C635

JW13

C620

R615

R408

IC101

D922

D919D918

D917D916

D915

D921D920

C401

C210

L605

C666

D601

CP601

JR602

C848

R614

D604

R611

Q401

Q402

D44

5

D446

IC401

C219

IC601

Q604Q606

L669

TU601

JR610

C650 C651R621 R623

D666

3-11. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 36 for IC Block Diagrams.-

(Page 33)

Note:• Voltage is dc with respect to ground under no-signal

(detuned) condition.no mark : FM( ) : AM< > : CD PLAY

33 33

CDX-L300/L460X

( M G - 3 9 3 X ) ( M G - 3 9 3 X A )

R908

R907C904

TH901

R933

Q919

R934

R932

D92

3C919

R930

D909

R931

Q920

D930

Q910

Q913

R912JR929R913

C905C907D

910

D90

8

R917

D91

3

R920

C916

R919

R918

Q915

R928

R925R926R927

R929

R924

R911

R910

D906

L703

L702

R921

R806R807R808

X802C802

C801

CNP701

R802

R815R814R813

R812R811R810

R824

R922R923

C809

SW801

CNP802

R817

R818

R822

R819

JR1

R711

R709R710

R707

R708

R706R705R704

R840

C810

R841R842

C843

C845D914

Q904D907

D999

C846

IC902

C915

C844

R909

R809

C914

Q907

C849

C806

X801C8

04

C803

JR901

IC801

R843

JR903

C909

L701

C847

Q916

D810Q909

Q912

Q905

Q906

Q921

Q914

Q929

Q918

Q911

Q917

Q902Q903

C701

C702

C703

C704

C812

3-12. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • Refer to page 24 for Waveforms.

Note:• Voltage and waveforms are dc with respect to ground

under no-signal (detuned) conditions.no mark : FM( ) : AM< > : CD PLAY

(Page30)

(Page 32)

(Page 35)

(Page 25)

35 35

CDX-L300/L460X

D554

JR501

R586

JR505

LED501 LED503

D561 D564 D568 D573 D575

D565

D562

D563 D570 D567

R565 R566 R578

D566

R567 R568R579

R580

D581

R569

R570 R575

R573 R574 R582

D578

D571

D572

D552

R552 R553

C555 C553

D551 C552

C551 R551

R576 R583

R571 R581R572

D577

D576

D579

D580D569 D574CNP553

CNP551

R587R588

R559 R560 R561 R562

S512 S513 S514 S515

S501 S511 S502 S503 S504 S505 S506 S507 S508 S509 S510

S516 S517 S518 S519 S520 S521

S581

JR503

D553

LED502 LED504

R577R563 R564

R501 R502 R503 R504 R505 R506 R507 R508 R509 R510

R511 R512 R513 R514 R515 R516 R517 R518 R519

3-14. SCHEMATIC DIAGRAM — DISPLAY SECTION —

(Page 33)

Note:• Voltage is dc with respect to ground under no-signal

(detuned) condition.no mark : FM