Sony Ericsson CDP-CX220 service manual Section Servicing Notes, Safety CHECK-OUT

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SECTION 1

SERVICING NOTES

SAFETY CHECK-OUT

After correcting the original service problem, perform the follow- ing safety check before releasing the set to the customer:

Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below.

LEAKAGE

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers.). Leakage current can be measured by any one of three methods.

1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers’ instructions to use these instruments.

2.A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3.Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indica- tion is 0.75 V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex- amples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suit- able. (See Fig. A)

To Exposed Metal

Parts on Set

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.

During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts.

The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emis- sion, observe from more than 30 cm away from the objective lens.

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

Carry out the “S curve check” in ”CD section adjustment” and check that the S curve waveform is output repeatedly.

0.15∝F

AC

1.5 k Ωvoltmeter

(0.75 V)

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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 PUB- LISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !

SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

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Contents Specifications Table of Contents Mechanical AdjustmentsExcept for the customers in the United States and Canada Section Servicing Notes Safety CHECK-OUTCD-TEXT Test Disc Checking MethodRestrictions in CD-TEXT Display ′ μ Section General Location of Parts and ControlsFront Panel Section Disassembly CaseFront Panel Section Rear Panel Section Guide ASS’YBase Unit Mechanism DeckKEY and Fluorescent Display Tube Check Mode Test ModeDisplay Check Mode ADJ ModeOrder of Disc Change Aging ModeSequence of Aging Mode Partial lightingError Display Error codeAging Method Section Mechanical Adjustments Guide Disc T Alignment Holder Disc A2 Alignment Sensor Alignment Pully and Disc Center Hole Alignment Magnet ASS’Y Alignment RF Level Check Section Electrical AdjustmentsCurve Check Balance CheckRF PLL Free-run Frequency Check Disc Sensor AdjustmentAdjustment Location Circuit Boards Location Section DiagramsThese are omitted Main Section Waveforms BD Section Panel SectionSee page 22 for Circuit Boards Location Printed Wiring Board BD SectionPage CDP-CX220 Schematic Diagram BD SectionPrinted Wiring Board Main Section See page 24 for Waveforms. See page 45 for IC Block Diagrams Schematic Diagram Main SectionPrinted Wiring Boards Jack Section Schematic Diagram Jack Section Printed Wiring Boards Panel Section Semiconductor Location Disp Board See page 24 for Waveforms. See page 46 for IC Block Diagrams Schematic Diagram Panel SectionPrinted Wiring Boards SENSOR/MOTOR Section Page Schematic Diagram SENSOR/MOTOR Section IC Block Diagrams BD Board IC101 CXD2587Q Main Board IC503 CXA1291P IC103 CXA2568M-T6Disp Board IC702 M66310FP IC506 LA5616Pin No Pin Name Function IC PIN Function DescriptionSubq Section Exploded Views CASE, Front Panel Section4949-619-1 Panel ASSY, Front Except US, CND Guide ASSY, Rear Panel Section 66 A-4724-031-A Main BOARD, Complete Except US, CNDAEP, UK, AED, SP, AUS Chassis Section Mechanism Deck CDM-40B 209 212206 210 213 206 205 201 202 203 215 204 214 216258 255 252 X-4947-244-1 Slider BU Adjustment Assy259 259 255 258 257 256 255254 251 252304 Optical PICK-UP Section KSM-213BKN/M-N305 306 303 302Section Electrical Parts ListSens Luminous Sens RAY Catcher Disp Disp Door Motor Door SW Illumination Jack Jack JOG Motor Main Diode RD30ESB2 Diode RD6.2ESB2PST994D Main Motor Sens Sony Corporation

CDP-CX220 specifications

The Sony Ericsson CDP-CX220 is a notable model within the realm of compact disc players, designed to blend advanced technology with user-friendly features. Launched in the late 90s, this device showcases Sony's commitment to delivering high-quality audio experiences through its innovative engineering and design.

One of the standout features of the CDP-CX220 is its impressive capacity. This compact disc player can hold up to 200 CDs, thanks to its innovative carousel system. This allows users to enjoy extended listening sessions without the need to change discs frequently, making it particularly appealing for audiophiles and casual listeners alike. The unit is designed to be both functional and space-efficient, fitting seamlessly into various media setups.

The CDP-CX220 employs Sony’s advanced Digital Sound Processing (DSP) technology, which enhances sound quality by providing clarity and depth to audio playback. This feature is particularly advantageous for those who appreciate detailed soundscapes, as it minimizes distortion and optimizes audio fidelity.

In terms of connectivity, the CDP-CX220 comes equipped with multiple outputs, including digital coaxial and optical connections. This provides users with the flexibility to integrate the player into a wider home audio setup, allowing for high-quality sound transfers to amplifiers and surround sound systems. Additionally, the CDP-CX220 supports standard RCA outputs for connecting to traditional stereo systems.

Navigating through stored CDs is made easy with the CDP-CX220’s user-friendly interface. It includes a remote control, allowing users to access playlists and selections from a distance. The intuitive display provides clear information about track numbers and playback status, ensuring a smooth and enjoyable listening experience.

Furthermore, the player incorporates various playback modes, including shuffle and repeat functions, enabling personalized listening experiences. Users can tailor their listening sessions to suit their moods, whether they desire randomness or continuity in their music selection.

Overall, the Sony Ericsson CDP-CX220 exemplifies a fusion of technology and practicality, designed to cater to the diverse needs of music lovers. Its impressive capacity, superior sound processing, versatility in connectivity, and user-friendly features solidify its reputation as a robust and reliable compact disc player that has stood the test of time.
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