Technicolor - Thomson CDP-CX57 RF PLL Free-run Frequency Check, About RV601 on the Main board

Page 18

When a general remote commander is not used:

1.Solder lead wires to TP (DVDD) and TP (TOFF) on the BD board severally.

2.Connect the oscilloscope to TP (TE) of the BD board.

3.Press the I/u button and turn ON the power supply.

4.Open the front cover, and press the [PLUSÊONE] button.

5.Set the disc (YEDS-18) into the “PLUS ONE” slit.

6.Close the front cover, and chuck the disc.

7.Playback the fifth track of the disc.

8.Short-circuit the lead wire connected at step 1. (The tracking servo is turned OFF)

9.Check the level B of the oscilliscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following :

A/B x 100 = less than ± 10%

RF PLL Free-run Frequency Check

Procedure :

1. Connect the frequency counter to TP (PCK) of the BD board.

frequency counter

BD board

TP (PCK)

2.

Press the

I/u

button and turn ON the power supply.

3.

Open the front cover, and press the [PLUSÊONE] button.

4.

Set the disc (YEDS-18) into the “PLUS ONE” slit.

5.

Close the front cover, and chuck the disc.

6.

Playback th e fifth track of the disc.

7.

Confirm that reading on frequency counter is 4.3218 MHz ±

Traverse waveform

Center of the waveform

30 kHz.

B

About RV601 on the MAIN board

RV601 of the MAIN board requires no adjustments. Please note that it should be dixed to mechanical center position when you

0 V

A (DC voltage)

moved and do not know origin position.

level: 1.3 ± 0.5 Vp-p

10.Disconnect the lead wire short-circuited at step 8. (The track- ing servo is turned ON.) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 8.

Traverse waveform

0 V

Tracking servo

 

 

 

Tracking servo

OFF

 

 

 

ON

 

 

C(DC

voltage)

11.Turn OFF the power, and remove the lead wire connected at step 1.

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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 CD-TEXT Test Disc Checking MethodRestrictions in CD-TEXT Display ′ μ Section General Location of Parts and ControlsFront Panel Section Disassembly CASE, Front PanelCD Mechanism Deck Section Audio BOARD, Main BoardBase Unit BD BOARD, Sled Motor M102Optical PICK-UP KSS-213B/S-N Test Mode ADJ ModeFluorescent Indicator TUBE, LED ALL LIT, and KEY Check Mode Shipment Mode Aging ModeFluorescent Indicator Tube and LED Check Mode Set to this mode when returning the unit to the userAging procedure Error DisplayError code 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 LC78622EIC103 LA6541 IC104 LC89170M Main Board IC201 LA5602IC203 LA5601 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 354 351 355 359 354 353358 356360 357 Optical Pick UP Section KSS-213B/S-N 409406 404 403405 407 401 408 402 406 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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