Technicolor - Thomson CDP-CX57 service manual Section Mechanical Adjustments, Disc Sensor Aligment

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SECTION 5

MECHANICAL ADJUSTMENTS

To adjust the mechanism section, enter the mechanism section adjustment mode.

For how to enter the mechanism section adjustment mode, refer to each adjustment section.

DISC SENSOR ALIGMENT

1.Make sure that there is no disc in the unit.

2.Connect an oscilloscope to TP501 of the MAIN board.

oscilloscope

GND

D.SENS (CH1)

HHOUT

HHOUT (CH2)

D.SENS

GND

 

MAIN board

TP501

3. While pressing the [CLEAR] and [PLUSÊONE] buttons at the same time and turn ON the power.

CHECK button

CLEAR button

I/u button

± button

PLUS ONE button

- button

 

4. The fluorescent indicator tube shows as follows, and the mechanism section adjustment mode is set.

Lit according to rotational direction

DISC No.

ALL DISCS

51

PLUS ONE

 

CD1

 

DISC

 

SEC

* * 3. 7

»

P

Blinks

5.The disc table rotates in the clockwise direction. The disc table rotation time is displayed with ‘’PLUS ONE” slit as a measu ring point.

6.Press the [CLEAR] button, to be rotated the disc table counterclockwise.

7.Measure the waveform of the oscilloscope when the disc table is rotating.

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Contents Digital SpecificationsLine OUT OUTSection Servicing Notes Table of ContentsMechanical Adjustments Except for the customers in the United States and CanadaSafety CHECK-OUT Restrictions in CD-TEXT Display CD-TEXT Test DiscChecking Method ′ μ Front Panel Section GeneralLocation of Parts and Controls Section Disassembly CASE, Front PanelCD Mechanism Deck Section Audio BOARD, Main BoardBase Unit BD BOARD, Sled Motor M102Optical PICK-UP KSS-213B/S-N Fluorescent Indicator TUBE, LED ALL LIT, and KEY Check Mode Test ModeADJ Mode Shipment Mode Aging ModeFluorescent Indicator Tube and LED Check Mode Set to this mode when returning the unit to the userError code Aging procedureError Display Section Mechanical Adjustments Disc Sensor AligmentFlat portion center Magnet Assy Aligment Disc Holder a AligmentRF Level Check Section Electrical AdjustmentsCurve Check Balance Traverse CheckRF PLL Free-run Frequency Check About RV601 on the Main boardAdjustment Location Section Diagrams Circuit Boards LocationSingapore model Main Section IC101 $Á Rfsm Play ModeWaveforms BD Section Diaplay SectionBlock Diagrams BD Section CDP-CX57Main Section 2ND CDPrinted Wiring Board BD Section Schematic Diagram BD Section Printed Wiring Board Audio Section Schematic Diagram Audio Section See page 21 for NotePrinted Wiring Board Main Section Schematic Diagram Main Section Printed Wiring Boards Panel Section Schematic Diagram Panel Section Printed Wiring Boards SENSOR/MOTOR Section Page Schematic Diagram SENSOR/MOTOR Section IC Block Diagrams BD Board IC101 LA9241M IC102 LC78622EIC203 LA5601 IC103 LA6541 IC104 LC89170MMain Board IC201 LA5602 IC601 BA6780 Display Board IC903 M66310FPIC PIN Function Description Pin No Pin Name FunctionRFS CV+Rfsm SLCIset DefiVvss VvddSbsy XvddXvss EflgTbll ResetLdin TblrDqsy SclkSrdt SENS1Case Section SectionExploded Views 4948-515-1 Illumination AssyFront Panel Section 66 A-4724-009-A Display BOARD, CompleteChassis Section Mechanism Deck CDM-46C2 360 357 354 351 355359 354 353358 356 405 407 401 408 402 406 Optical Pick UP Section KSS-213B/S-N409406 404 403 Section Electrical Parts List Audio Ceramic Chip 2PF SwitchCeramic Chip TransformerDisc Sensor R Disc Sensor S Display LED Main Ferrite BeadMain Motor Power SW Table Sensor MANUAL, Instruction SWEDISH, FINNISH, Danish AED Accessories & Packing MaterialsCORD, Connection Control A1 CND Hardware ListSony Corporation

CDP-CX57 specifications

The Technicolor - Thomson CDP-CX57 is a versatile and feature-rich compact disc player designed to enhance the listening experience for audiophiles and casual listeners alike. As part of Thomson's long-standing legacy in audio technology, the CDP-CX57 combines sleek design with advanced digital audio technologies, making it a popular choice for those seeking high-quality sound reproduction.

One of the standout features of the CDP-CX57 is its ability to support a wide range of disc formats. This player is compatible with standard audio CDs, as well as CD-R and CD-RW media, allowing users to enjoy a diverse library of music collections. Enhanced playback capabilities enable users to experience their favorite tracks with clarity and precision.

Equipped with high-performance digital-to-analog converters (DACs), the CDP-CX57 delivers rich, detailed audio reproduction. This technology transforms digital signals into analog signals, resulting in improved sound quality and a more immersive listening experience. The unit's excellent jitter suppression further ensures that audio playback remains stable and free of distortion.

The CDP-CX57 also features programmable playback options, allowing users to create custom playlists and enjoy their music in a personalized manner. Additionally, the unit comes with a user-friendly remote control, enabling effortless navigation through tracks and settings from a distance.

Built for longevity, the CDP-CX57 boasts a robust construction that protects sensitive internal components from external interference. This durability extends the player’s life and ensures optimal performance over time. Furthermore, the sleek design and compact footprint make it an attractive addition to any audio setup, fitting seamlessly into various environments.

The Technicolor - Thomson CDP-CX57 is an ideal blend of advanced technology and user-friendly features, catering to both seasoned audiophiles and those new to the world of high-fidelity audio. With its exceptional sound quality, versatile playback options, and durable design, it remains a standout choice for music lovers seeking a reliable and enjoyable listening experience.
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