Sony CDX-MP450X Service Manual
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Sony CDX-MP450X Service Manual

Sony CDX-MP450X Service Manual

Fm/am compact disc player
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SERVICE MANUAL
Ver 1.0 2001. 02
• 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
Compact disc
digital audio system
Signal-to-noise ratio
90 dB
Frequency response
10 – 20,000 Hz
Wow and flutter
Below measurable limit
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.
Tuner section
FM
Tuning range
87.5 – 107.9 MHz
Antenna terminal
External Antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity
9 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
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
530 – 1,710 kHz
Antenna terminal
External Antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
30 µV
Sony Corporation
9-870-292-11
2001B0400-1
Audio Entertainment Group
© 2001. 2
General Engineering Dept.
CDX-MP450X
Model Name Using Similar Mechanism
CD Drive Mechanism Type
Optical Pick-up Name

SPECIFICATIONS

Power amplifier section
Outputs
Speaker impedance
Maximum power output 50 W × 4 (at 4 ohms)
General
Outputs
Inputs
Tone controls
Power requirements
Dimensions
Mounting dimensions
Mass
Supplied accessories
Design and specifications are subject to change without
notice.
FM/AM COMPACT DISC PLAYER
US Model
NEW
MG-383KU-121//K
KSS-720A
Speaker outputs
(sure seal connectors)
4 – 8 ohms
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
× 2 × 7
(7
in.) (w/h/d)
1/8
1/4
Approx. 182 × 53 × 162 mm
× 2
× 6
(7
in.) (w/h/d)
1/4
1/8
1/2
Approx. 1.3 kg
(2 lb. 10 oz.)
Parts for installation and connections (1 set)
Front panel case (1)
Card remote commander
RM-X114
1

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  • Page 1: Specifications

    CDX-MP450X SERVICE MANUAL US Model Ver 1.0 2001. 02 • The tuner and CD sections have no adjustments. Model Name Using Similar Mechanism CD Drive Mechanism Type MG-383KU-121//K AUDIO POWER SPECIFICATIONS POWER OUTPUT AND TOTAL HARMONIC DISTORTION Optical Pick-up Name...

  • Page 2: Table Of Contents

    COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

  • Page 3: General

    CDX-MP450X SECTION 1 GENERAL This section is extracted from instruction manual.
  • Page 4 CDX-MP450X...
  • Page 5 CDX-MP450X...
  • Page 6 CDX-MP450X...
  • Page 7 CDX-MP450X Connections...

  • Page 8: Disassembly

    CDX-MP450X SECTION 2 DISASSEMBLY Note : This equipment can be removed using the following procedure. Sub Panel(CD) Assy CD Mechanism Block Main Board Heat Sink Chassis (T) Sub Assy lever Section Shaft Roller Assy Servo Board Floating Block Assy Optical Pick-up Block Note : Follow the disassembly procedure in the numerical order given.

  • Page 9: Cd Mechanism Block

    CDX-MP450X 2-2. CD MECHANISM BLOCK 7 bracket (CD) 6 PTT 2.6x6 5 CD mechanism block 2 PTT 2.6x6 1 PTT 2.6x6 4 CNP701 2-3. MAIN BOARD 4 screw (+BTT) 6 MAIN board 5 screws (+BTT) 3 PTT 2.6x8 2 PTT 2.6x8...

  • Page 10: Heat Sink

    CDX-MP450X 2-4. HEAT SINK 7 heat sink 6 PTT 2.6x8 5 PTT 2.6x8 4 PTT 2.6x8 3 PTT 2.6x12 2 PTT 2.6x8 1 PTT 2.6x8 2-5. CHASSIS (T) SUB ASSY 2 P 2x3 3 P 2x3 1 Unsolder the 4 chassis (T) sub assy lead wires.

  • Page 11: Lever Section

    CDX-MP450X 2-6. LEVER SECTION 5 guide (disc) 6 lever (R) 3 tension spring (LR) 7 lever (L) 1 special screw 2 IN SELF SW board 4 claws 2-7. SERVO BOARD 6 special screw 3 Removal the solders. 2 CN518 1 CN517...

  • Page 12: Shaft Roller Assy

    CDX-MP450X 2-8. SHAFT ROLLER ASSY • When installing, take note of the positions arm (roller) and washers. (Fig. 1) 3 retaing ring (RA) shaft retainer 4 shaft retainer washer washer shaft retainer retaing ring (RA) Fig. 1 5 shaft roller assy...

  • Page 13: Optical Pick-Up Block

    CDX-MP450X 2-10. OPTICAL PICK-UP BLOCK 1 P 2x3 2 sled motor assy (M902) 3 optical pick-up block...

  • Page 14: Diagrams

    CDX-MP450X SECTION 3 DIAGRAMS 3-1. IC PIN DESCRIPTIONS • IC513 CXP81960M-671R (CD SYSTEM CONTROL) Pin No. Pin Name Pin Description A MUTE Audio mute control output — Not used. (Open) CD ON CD servo power supply control output (H: Power on)
  • Page 15 CDX-MP450X Pin No. Pin Name Pin Description SENS Sensitivity input from DSP IC (IC516). IN SW Disc in switch input 65, 66 — Not used. (Fixed at H in this set) MP3 playback control input (H: not playback, L: playback)
  • Page 16 CDX-MP450X • IC514 CL8830-PE0 (MPEG DECODER) Pin No. Pin Name Pin Description RESERVED Fixed at L in this set. 2 – 4 HDATA0 – 2 8-bit bi-directional host data bus 0 – 2 input/output for CD system control (IC513). —...
  • Page 17 CDX-MP450X Pin No. Pin Name Pin Description MDATA7 Memory data 7 input/output LDQM SDRAM LDQM output to DRAM IC (IC520). UDQM SDRAM UDQM output to DRAM IC (IC520). — Power supply pin (+3.3 V) SDRAM write enable output to DRAM IC (IC520).
  • Page 18 CDX-MP450X Pin No. Pin Name Pin Description — Ground RESERVED Fixed at L in this set. VDATA3 Video data bus 3 output (Not used in this set) — Power supply pin (+3.3 V) VDATA4 Video data bus 4 output (Not used in this set) —...
  • Page 19 CDX-MP450X Pin No. Pin Name Pin Description Host chip select input Read/write strobe input in I mode. Read strobe input in M mode.
  • Page 20 CDX-MP450X • IC801 µPD17708GC-618-3B9 (SYSTEM CONTROL) Pin No. Pin Name Pin Description SIRCS Wireless remote commander input SELF SW Self switch input DOOR Front panel open/close detection input NOSE Front panel with/without detection input — Not used. (Connect to ground) SYSRST Reset output for slave microcomputer IC.
  • Page 21 CDX-MP450X Pin No. Pin Name Pin Description ANT ON Car antenna control output EZ SEL Rotary commander shift key input POWER ON System power on/off control and power amplifier control output 61 – 63 — Not used. (Open) ST IN...

  • Page 22: Block Diagram -Tuner Section

    CDX-MP450X 3-2. BLOCK DIAGRAM — TUNER SECTION — ELECTRONIC VOLUME TUNER UNIT IC401 PJ401-3 TU601 L-CH CNJ601 SECTION AUDIO OUT (ANTENNA) FRONT (Page 23) Q406 R-CH AM ANT LTOUT LSIN LFIN L-OUT 18 TONE LSOUT PJ401-1 R-CH R-OUT FM ANT...

  • Page 23: Block Diagram -Cd Section

    CDX-MP450X 3-3. BLOCK DIAGRAM — CD SECTION — RF AMP IC516 IC511 RFAC RFAC TUNER SERIAL OPTICAL PICK-UP L-CH SECTION BLOCK (Page 22) KSS-720A A + B + C + D R-CH RFDCO XTAI DA XCK IC515 I - V...

  • Page 24: Block Diagram -Mpeg Section

    CDX-MP450X 3-4. BLOCK DIAGRAM — MPEG SECTION — MPEG DECODER IC514 CD DATA CD-DA DA DATA1 CD PCMD DA DATA CD BCK DA BCK CD BCK DA BCK CD LRCK DA LRCK SECTION CD LRCK DA LRCK AUDIO SECTION CD C2P0...

  • Page 25: Block Diagram -Display Section

    CDX-MP450X 3-5. BLOCK DIAGRAM — DISPLAY SECTION — SYSTEM CONTROL LCD DRIVE IC801(2/2) IC901 LCD CE XOUT LCD901 4-51 S04-51 X801 LIQUID CRYSTAL LCD CKO 52-55 COM1-4 4.5MHz DISPLAY PANEL LCD SO BU+5V POWER LED905 BAND SW CONTROL BATT LSW916...

  • Page 26: Circuit Boards Location

    CDX-MP450X 3-6. CIRCUIT BOARDS LOCATION SL SW board IN SELF SW board RELAY board SERVO board MAIN board tuner unit DISPLAY board (TU601)
  • Page 27 CDX-MP450X • Waveforms (Servo board) THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) 1.5Vp-p for schematic diagram: • All capacitors are in µF unless otherwise noted. pF: µµF Approx.

  • Page 28: Printed Wiring Boards -Cd Mechanism Section

    CDX-MP450X • Semiconductor 3-7. PRINTED WIRING BOARDS — CD MECHANISM SECTION — Location Ref. No. Location D511 D516 IC513 IC519 IC520 IC521 Q511...
  • Page 29 CDX-MP450X • Semiconductor Location Ref. No. Location D515 IC511 IC512 IC514 IC515 IC516 IC523 (Page 33)

  • Page 30: Schematic Diagram -Cd Mechanism Section (1/3)

    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.

  • Page 31: Schematic Diagram -Cd Mechanism Section (2/3)

    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.

  • Page 32: Schematic Diagram -Cd Mechanism Section (3/3)

    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...

  • Page 33: Printed Wiring Board -Main Section

    CDX-MP450X 3-11. PRINTED WIRING BOARD — MAIN SECTION — • Semiconductor Location Ref. No. Location Ref. No. Location D401 IC401 D402 IC801 D403 IC901 F-13 D407 B-11 IC902 (Page 29) D408 C-12 IC903 C-14 D409 IC904 G-12 D411 D412 Q401...

  • Page 34: Schematic Diagram -Main Section (1/2)

    CDX-MP450X 3-12. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 40 for IC Block Diagrams. IC B/D (Page (Page 35) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition. no mark : FM ) : AM <...

  • Page 35: Schematic Diagram -Main Section (2/2)

    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 MA1810 (Page 36) Note: • Voltage is dc with respect to ground under no-signal (detuned) condition.

  • Page 36: Schematic Diagram -Relay Section

    CDX-MP450X • Waveforms (Main board) 3-14. SCHEMATIC DIAGRAM — RELAY SECTION — 2.1Vp-p 4.5MHz IC801 (Page 39) (Page 35)

  • Page 37: Printed Wiring Board -Relay Section

    CDX-MP450X 3-15. PRINTED WIRING BOARD — RELAY SECTION — (Page 33) (Page 38)

  • Page 38: Printed Wiring Board -Display Section

    CDX-MP450X 3-16. PRINTED WIRING BOARD — DISPLAY SECTION — (Page 37) • Semiconductor Location Ref. No. Location Ref. No. Location (D901) A-10 IC951 (D902) A-11 (D904) LED910 (D905) A-10 LED911 LED912 B-13 (IC901) LED913 B-13 ) : SIDE B...

  • Page 39: Schematic Diagram -Display Section

    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...
  • Page 40 CDX-MP450X • IC Block Diagrams. IC511 CXA2570N-T4 IC512 LA6556 IC401 LC75374E 24 RFDCI S-GND LFIN 23 RFDCO INPUT CH2-CH4 OUTPUT – 35 MUTE2 MUTE2 LFOUT ON/OFF – – – – CH1 OUTPUT VCC2 34 MUTE1 22 VC MUTE1 ON/OFF LSELO...
  • Page 41 CDX-MP450X IC516 CXD2598Q 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 61 60 59 54 53 52 51 CLOCK GENERATOR BCKI ENPH EMPHI OP AMP ANALOG XVDD CONVERTER SWITCH SERIAL-IN DIGITAL...

  • Page 42: Exploded Views

    CDX-MP450X SECTION 4 EXPLODED VIEWS NOTE: The components identified by • The mechanical parts with no reference • Color Indication of Appearance Parts mark 0 or dotted line with mark number in the exploded views are not supplied. Example : 0 are critical for safety.

  • Page 43: Front Panel Section

    CDX-MP450X 4-2. FRONT PANEL SECTION not supplied (DISPLAY board) LCD901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-224-300-11 BUTTON (OPEN) * 59 3-041-175-01 PLATE (LCD), GROUND 3-038-318-01 SPRING (RELEASE) 1-694-660-11 CONDUCTIVE BOARD, CONNECTION X-3380-414-1 PANEL (S) ASSY, FRONT...

  • Page 44: Cd Mechanism Section (1)

    CDX-MP450X 4-3. CD MECHANISM SECTION (1) (MG-383KU-121//K) M903 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 101 1-676-709-11 IN SELF SW BOARD * 111 A-3283-017-A SERVO BOARD, COMPLETE 3-040-039-01 CHASSIS (T) 3-221-779-01 BRACKET (MOTOR) 3-040-038-01 SPRING (LR), TENSION...

  • Page 45: Cd Mechanism Section (2)

    CDX-MP450X 4-4. CD MECHANISM SECTION (2) (MG-383KU-121//K) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-040-025-01 ARM, CHUCKING A-3307-422-A CHASSIS (M) COMPLETE ASSY 3-040-031-01 DAMPER (T) 3-040-059-01 SPRING (TR), TENSION 3-040-056-01 LEVER (D) 3-040-057-01 LEVER (LOCK)

  • Page 46: Cd Mechanism Section (3)

    CDX-MP450X 4-5. CD MECHANISM SECTION (3) (MG-383KU-121//K) M901 (supplied with 201) M902 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref.

  • Page 47: Electrical Parts List

    CDX-MP450X SECTION 5 DISPLAY ELECTRICAL PARTS LIST NOTE: The components identified by • Due to standardization, replacements in • Items marked “*” are not stocked since mark 0 or dotted line with mark the parts list may be different from the they are seldom required for routine service.
  • Page 48 CDX-MP450X DISPLAY IN SELF SW MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R937 1-216-807-11 METAL CHIP 1/16W C420 1-164-492-11 CERAMIC CHIP 0.15uF R938 1-216-821-11 METAL CHIP 1/16W C421 1-164-492-11 CERAMIC CHIP 0.15uF R939 1-216-821-11 METAL CHIP...
  • Page 49 CDX-MP450X MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C802 1-163-009-11 CERAMIC CHIP 0.001uF D408 8-719-049-38 DIODE 1N5404TU C803 1-164-222-11 CERAMIC CHIP 0.22uF D409 8-719-914-43 DIODE DAN202K-T-146 C804 1-163-009-11 CERAMIC CHIP 0.001uF D411 8-719-079-42 DIODE 1ZB22(TPA3)
  • Page 50 CDX-MP450X MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < JUMPER RESISTOR > Q915 8-729-027-52 TRANSISTOR DTC124EK-T146 Q916 8-729-101-07 TRANSISTOR 2SB798-T1-DLDK JR103 1-216-295-11 SHORT Q917 8-729-027-43 TRANSISTOR DTC114EK-T146 JR104 1-216-295-11 SHORT Q918 8-729-901-05 TRANSISTOR DTA124EK-T146...
  • Page 51 CDX-MP450X MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R616 1-216-049-11 RES-CHIP 1/10W R858 1-469-144-21 FERRITE, EMI (SMD) R617 1-249-421-11 CARBON 2.2K 1/4W R860 1-216-105-11 RES-CHIP 220K 1/10W R618 1-216-057-00 METAL CHIP 2.2K 1/10W R861...
  • Page 52 CDX-MP450X RELAY SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-681-732-11 RELAY BOARD C544 1-107-826-11 CERAMIC CHIP 0.1uF C545 1-162-965-11 CERAMIC CHIP 0.0015uF 10% ************ C546 1-165-176-11 CERAMIC CHIP 0.047uF < CONNECTOR > C547 1-164-004-11 CERAMIC CHIP 0.1uF...
  • Page 53 CDX-MP450X SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C624 1-162-964-11 CERAMIC CHIP 0.001uF < TRANSISTOR > C625 1-162-964-11 CERAMIC CHIP 0.001uF C626 1-162-064-11 CERAMIC CHIP 0.001uF Q511 8-729-904-87 TRANSISTOR 2SB1197K-T-146-R C627 1-125-837-11 CERAMIC CHIP 6.3V...
  • Page 54 CDX-MP450X SERVO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R569 1-216-857-11 METAL CHIP 1/16W R657 1-216-829-11 METAL CHIP 4.7K 1/16W R570 1-216-839-11 METAL CHIP 1/16W R660 1-216-829-11 METAL CHIP 4.7K 1/16W R571 1-216-845-11 METAL CHIP...
  • Page 55 CDX-MP450X SL SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-676-708-11 SL SW BOARD PARTS FOR INSTALLATION AND CONNECTIONS ************ *************************************** < CONNECTOR > 3-014-370-21 FRAME, FITTING 3-030-929-04 SPRING, FITTING CN13 1-770-347-21 CONNECTOR, FPC 6P...
  • Page 56 CDX-MP450X REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...

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