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CDX-MP450X
SERVICE MANUAL
Ver 1.0 2001. 02

US Model

· The tuner and CD sections have no adjustments. AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION 19 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 1% total harmonic distortion. CD player section
System Signal-to-noise ratio Frequency response Wow and flutter Laser Diode Properties Material GaAlAs Wavelength 780 nm Emission Duration Continuous Laser output power Less than 44.6 µW* * This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block. Compact disc digital audio system 90 dB 10 ­ 20,000 Hz Below measurable limit

Model Name Using Similar Mechanism CD Drive Mechanism Type Optical Pick-up Name

NEW MG-383KU-121//K KSS-720A

SPECIFICATIONS
Power amplifier section
Outputs Speaker outputs (sure seal connectors) Speaker impedance 4 ­ 8 ohms Maximum power output 50 W × 4 (at 4 ohms)

General
Outputs Audio outputs (front/rear) Power Antenna relay control lead Power amplifier control lead Telephone ATT control lead Antenna input connector Remote controller input connector Bass ±9 dB at 100 Hz Treble ±9 dB at 10 kHz 12 V DC car battery (negative ground) Approx. 178 × 50 × 183 mm (7 1/8 × 2 × 7 1/4 in.) (w/h/d) Approx. 182 × 53 × 162 mm (7 1/4 × 2 1/8 × 6 1/2 in.) (w/h/d) Approx. 1.3 kg (2 lb. 10 oz.) Parts for installation and connections (1 set) Front panel case (1) Card remote commander RM-X114

Inputs

Tone controls Power requirements Dimensions Mounting dimensions Mass Supplied accessories

Tuner section
FM Tuning range Antenna terminal Intermediate frequency Usable sensitivity Selectivity Signal-to-noise ratio 87.5 ­ 107.9 MHz External Antenna connector 10.7 MHz 9 dBf 75 dB at 400 kHz 65 dB (stereo), 68 dB (mono) Harmonic distortion at 1 kHz 0.7% (stereo), 0.4% (mono) Separation 35 dB at 1 kHz Frequency response 30 ­ 15,000 Hz AM Tuning range Antenna terminal Intermediate frequency Sensitivity

Design and specifications are subject to change without notice.

530 ­ 1,710 kHz External Antenna connector 10.7 MHz/450 kHz 30 µV

FM/AM COMPACT DISC PLAYER
9-870-292-11
2001B0400-1 © 2001. 2

Sony Corporation
Audio Entertainment Group General Engineering Dept.

1

CDX-MP450X

3-2. BLOCK DIAGRAM -- TUNER SECTION --

TUNER UNIT TU601 CNJ601 (ANTENNA) 1 AM ANT 2 FM ANT L-OUT 18 R-OUT 16 AM DET 12

1
CD SECTION (Page 23)
R-CH 38 L1 L-CH 36 L3

ELECTRONIC VOLUME IC401 FL 21 Q406 37 L2 LTOUT 28 27 LSIN LSOUT RL 20 23 22 LFIN TONE

PJ401-3 L -4 R-CH PJ401-1 L -2 R-CH R AUDIO OUT REAR R AUDIO OUT FRONT

CE DI CL
18 17 16

Q405 SYSTEM CONTROL IC801(1/2)

(Page 24) MPEG SECTION

POWER AMP IC902 OUT2+ 12 IN2 OUT25 3

CNP901 1 9 FL+ FL­

FM DET 22 LCL/DX 4 LOW PASS FILTER Q603,604

64 ST IN 39 LCL/DX VOL CE 47 VOL DATA 49 VOL CLK 48

4
A MUTE

VT 5

35 ED1 PDOUT 31 VCOH FM MUTE 8 MUTE DRIVE Q401,402 11 IN1

OUT1+ OUT1AUX IN STBY 4 MUTE 22

9 7

2 10

RL+ RL­

VCO MONO S-METER SD IFC/SEEK

6 11 19 20 21

32 VCOL AM 45 MONO 26 S-METER 46 SD 29 FM IFC 28 AM IFC

BEEP 40

16

R-CH

FM +B 8

FM POWER CONTROL Q602,607

POWER CONTROL Q909,923,924

BATT

POWER IC ON 17 AMP MUTE 19 TEL MUTE 16 51 FM ON ACC CHECK Q913,914 ACC BATT

3 RR+ 11 RR4 FR+ 12 FR13 TEL MUTE 15 PERK

Q407

TU +B 9 AM POWER CONTROL Q601,606

ACC IN 41

AM +B 10

Signal path
BU IN 78 52 AM ON BU CHECK Q911,912,922 BATT BATT BU CHECK ANT ON 58

: FM : AM

5

MPEG SECTION (Page 24)

: CD AUDIO

DRIVER +5V

REG Q905

CD MECHA POWER CONTROL Q906-908

BATT MSC MSI MSO MSRQ MCS SYSRST SELF SW 68 69 70 71 72 6 MSC MSI MSO MSRQ MCS SYSRST

POWER SUPPLY IC901

2
MPEG SECTION (Page 24)
MECHA ON CD ON REG Q901,IC903 CD POWER CONTROL Q902-904

AM POWER CONTROL Q915,916

6

ANT REM

3
MPEG SECTION (Page 24)
BATT

AMP ON 60 VIDEO +6V BU+5V

1 AMP ON 5 BU+B

AMP+B 2 VCC 4 BATT

5

AMP REM

BATT

16

BATT

AUDIO+3.3V D+3.3V A+13.3V

8
CD SECTION (Page 23)

2 SELF SW BU+3.3V REG IC904

ACC

7 ACC 8 GND

22

22

CDX-MP450X

3-3. BLOCK DIAGRAM -- CD SECTION --

RF AMP IC511 RFAC RFAC

DSP IC516

OPTICAL PICK-UP BLOCK KSS-720A

VCA A+B+C+D

EQ

6

61

EFM DEM

D/A I/F

SERIAL I/F

PWM

AMP

92

L-CH

1

TUNER SECTION (Page 22)

PWM A B A + B + C + D

AMP

95

R-CH

A

6

B

7 8 9

AMP

RFDCO

23

XTAI 86 IC515 PCMDI 80 BCKI 82 LRCKI 78 RFDC PCMD

DA XCK DA DATA DA BCK DA LRCK

C

I-V CONV

C

D

D

7

MPEG SECTION (Page 24)

E

A+C

B+D FE

54 AMP

F

COMP

14

50

FE A/D CONV

79 BCK 81 LRCK 77 C2PO 23

CD PCMD CD BCK CD LRCK CD C2PO

6

MPEG SECTION (Page 24)

E 10 F 11 PD 2 PD

COMP

TE

16

52 51

TE SE EMPHI 84 LOCK 34 GFS 22 CD SYSTEM CONTROL IC513(1/2) 21 EMPHO 61 LOCK 56 GFS 43 TEXT IN 28 30 45 76 SUBQ SQCK TEXT CLK SCOR LIMIT 27 SW SELF SW

8
SW2 (SELF)

TUNER SECTION (Page 22)

APC LD DRIVE Q511 LD

RW/R

12

CLV SERVO

SELF SW 6

1

IN SW 64

LD

SQSO M902 SLED MOTOR M 6 7 DRIVER IC512 SLED MOTOR DRIVE SFDR SRDR 38 39 SUB CODE PROCESSOR 31 32 SLED SERVO SQCK SCOR

6 7 24

SW3 (DISC IN)

SW4 (LIMIT)

TRACKING COIL

TR+ TR­

8 9

TRACKING COIL DRIVE

25 24

TFDR TRDR

40 41

TRACKING SERVO

CPU I/F

DATA 13 CLOCK 15 XLAT 14 SENS 16 SCLK 17

22 24 23 63 69

CD DATA CD CKO CD XLAT SENS SCLK

FOCUS COIL

F+ F­

10 11 M901

FOCUS COIL DRIVE

22 21

FFDR FRDR

42 43

FOCUS SERVO FOK FOK 32 55 FOK D SW 25 SW1 (DOWN) E/(U) 7

SPINDLE MOTOR

M

12 13

SPINDLE MOTOR DRIVE

18

35

MDP

XRST 11

34 CD RST

M903 LOADING MOTOR M 5 4 LOADING MOTOR DRIVE 1 2 NUTE1 34 NUTE2 35 81 70 4 5 82 LM EJECT LM LOADING RW/R SLD MINUS DRV OE

Signal path : CD AUDIO

23

23

CDX-MP450X

3-4. BLOCK DIAGRAM -- MPEG SECTION --

MPEG DECODER IC514

CD SECTION (Page 23)

6

CD PCMD CD BCK CD LRCK CD C2P0

CD DATA 180 CD BCK 184 CD LRCK 182 CD C2P0 185

CD-DA DEC MPEG AUDIO DEC AUDIO DSP

DIGITAL AUDIO I/F

DA DATA1 DA BCK DA LRCK DA XCK

163 167 166 169

DA DATA DA BCK DA LRCK DA XCK

7

CD SECTION (Page 23)

VDATA 0-7 MPEG AUDIO DEC OSD DEC MEMORY CONTROL HOST I/F VIDEO MIX HSYNC VSYNC VCLK

13 RESET 128 ROM CS

157 158 177 SYSCLK 178 IC519

142,143,145 148,150,152 154,155

PROGRAM STREAM DEC

LYLICS DEC

79 82 85 86 90 84 80

MDATA 0-15

LDQM MWE SD CAS SD RAS SD CSO SD CLK UDQM

HADDR 0-2

X514 27MHz

CD SYSTEM CONTROL IC513(2/2)

H DATA 0-7

CS R/W RD WAIT INT

MADDR 0-18

206 207 208 15 16

94 89 90 11 12

H CS H R/W HRD H WAIT H INT

TV RST 71 SDA 9 SCL 10 CD ON 3 CD ON

53,54,56,58-60 62,64,66,68,70 72-74,76,78

96,98-100,102,104-106 108,110-112,114,116 118,120-122,124

2-4,6 8-11

202 - 204

2
91 - 93
H ADDR 0-2 CDM ON 100 MECHA ON

TUNER SECTION (Page 22)

MD 0-15

MA 0-18

XTAL 40

13 - 20

HDATA 0-7

EXTAL 41 MSC 79

X511 12MHz MSC IC523 MSI MSO MSRQ MCS SYS RESET

MD 0-15

MA 0-11

MA 0-18

MD 0-7

SDRAM IC520

MSI 78 MSO 77 MSRQ 32 MCS 80 RESET 38

2,3,5,6,8,9 11,12,39,40,42 43,45,46,48,49 DQ 0-15

19-24 27-32 A0-10,BA

21-23 25-29 Q0-7

1-7 10-20,31 A0-18

3

TUNER SECTION (Page 22)

CS CLK UDQM

14 15 16 17 18 35 36

30

CE

A MUTE 1 ROM IC521

A MUTE

4 5

BU IN 75

BU CHECK

TUNER SECTION (Page 22) TUNER SECTION (Page 22)

LDQM WE CAS RAS

96 H RST

24

24

CDX-MP450X

3-5. BLOCK DIAGRAM -- DISPLAY SECTION --

SYSTEM CONTROL IC801(2/2)

LCD DRIVE IC901

76 XOUT X801 4.5MHz 77 XIN

LCD CE 53 LCD CKO 65 LCD SO 66

62 CE 63 CL 64 DI

S04-51 4-51 COM1-4 52-55

LCD901 LIQUID CRYSTAL DISPLAY PANEL

BU+5V

11 BAND SW

BATT

POWER CONTROL Q919,920

LED905 LSW916

S801 RESET S803 (NOSE DET)

80 RESET

DOOR IND 7 BATT REG Q921 LED910­913 LSW901­907 LSW909­915 LSW917­922

4 NOSE

3 DOOR

POWER CONTROL Q917,918 ILL ON 54

IR RECEIVER IC951

1 SIRCS

KEY1 24 KEY2 23

KEY MATRIX LSW901-907,909-915, 917-922

CNP902 (REMOTE IN)

59 EZ SEL 25 ROT IN

RE1 42 RE2 43

RE901 ROTARY ENCODER

LSW916

Z

25

CDX-MP450X

3-8. SCHEMATIC DIAGRAM -- CD MECHANISM SECTION (1/3) -- · Refer to page 27 for Waveforms. · Refer to page 40 for IC Block Diagrams.

IC B/D

IC B/D

IC B/D

(Page 31)

Note: · Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY : Impossible to measure

30

30

CDX-MP450X

3-9. SCHEMATIC DIAGRAM -- CD MECHANISM SECTION (2/3) -- · Refer to page 27 for Waveforms. · Refer to page 40 for IC Block Diagrams.

(Page 30)

(Page 34)

(Page 32) Note: · Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY : Impossible to measure

31

31

CDX-MP450X

3-10. SCHEMATIC DIAGRAM -- CD MECHANISM SECTION (3/3) -- · Refer to page 27 for Waveforms.

(Page 31)

Note: · Voltage and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY

32

32

CDX-MP450X
3-12. SCHEMATIC DIAGRAM -- MAIN SECTION (1/2) -- · Refer to page 40 for IC Block Diagrams.

IC B/D

(Page 31)

(Page 35)

Note: · Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM ( ) : AM < > : CD PLAY

34

34

CDX-MP450X
3-13. SCHEMATIC DIAGRAM -- MAIN SECTION (2/2) -- · Refer to page 36 for Waveforms. · Refer to page 41 for IC Block Diagrams.

IC B/D

(Page 34)

MA1810

(Page 36)

Note: · Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM ( ) : AM < > : CD PLAY : Impossible to measure

35

35

CDX-MP450X

· Waveforms (Main board)

3-14. SCHEMATIC DIAGRAM -- RELAY SECTION --

1
2.1Vp-p

4.5MHz

IC801

uh

(Page 39) (Page 35)

36

36

CDX-MP450X

3-17. SCHEMATIC DIAGRAM -- DISPLAY SECTION --

(Page 36)

Note: · Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM

39

39