Sony D-EJ721 - Portable Cd Player Manuals

Portable CD Player Operating Instructions About the area code The area code of the location in which you purchased the CD player is shown on upper left of the bar code label on the package. For accessories supplied with your CD player, check the area code of your model and see “Accessories (supplied/optional).” 3-225-011-73 (1) D-EJ721 D-EJ725 © 2000 Sony Corporation 2 CAUTION The use of optical instruments with this product will increase eye hazard. Owner’s Record The model number is located at the rear and the serial number is located inside the lid of the CD player. Record these numbers in the spaces provided below. Refer to them whenever you call upon your Sony dealer regarding this product. Model No. ___________________ Serial No. ___________________ Certain countries may regulate disposal of the battery used to power this product. Please consult with your local authority. For the customers in the USA and Canada This mark is available in the USA and Canada only RECYCLING NICKEL-CADMIUM BATTERIES Nickel-Cadmium batteries are recyclable. You can help preserve our environment by returning your unwanted batteries to your nearest point for collection, recycling or proper disposal. Note: In some areas the disposal of nickel-cadmium batteries in household or business trash may be prohibited. RBRC (Rechargeable Battery Recycling Corporation) advises you about spent battery collection by the following phone number. Call toll free number: 1-800-822-8837 (United States and Canada only) Caution: Do not handle damaged or leaking nickel- cadmium batteries. For the customers in the USA and Canada DISPOSAL OF NICKEL METAL HYDRIDE BATTERY. NICKEL METAL HYDRIDE BATTERY. DISPOSE OF PROPERLY. You can return your unwanted nickel metal hydride batteries to your nearest Sony Service Center or Factory Service Center. Note: In some areas the disposal of nickel metal hydride batteries in household or business trash may be prohibited. For the Sony Service Center nearest you call 1-800- 222-SONY (United States only) For the Sony Factory Service Center nearest you call 416-499-SONY (Canada only) Caution: Do not handle damaged or leaking nickel metal hydride battery. For the customers in the USA This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: – Reorient or relocate the receiving antenna. – Increase the separation between the equipment and receiver. – Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. – Consult the dealer or an experienced radio/TV technician for help. You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. 3 Table of Contents Getting started Locating the controls ................................... 4 Playing a CD 1.Connect your CD player. ......................... 6 2.Insert a CD. ............................................. 6 3.Play a CD. ............................................... 6 Playback options Playing tracks repeatedly (Repeat play) ...... 9 Playing a single track (Single play) ............. 9 Playing tracks in random order (Shuffle play)........................................... 9 Playing tracks in your favorite order (PGM play)............................................ 10 Available features G-PROTECTION function ........................ 11 Emphasizing the bass sound (SOUND) .... 11 Protecting your hearing (AVLS) ................ 12 Locking the controls (HOLD) ................... 12 Turning off the operation beep sound........ 13 Connecting your CD player Connecting a stereo system ....................... 14 Using your CD player in a car ................... 15 Connecting a power source Using the rechargeable batteries ................ 16 Using the dry batteries ............................... 18 Using the external battery case .................. 18 Notes on the power source ........................ 19 Additional information Precautions ................................................ 20 Maintenance .............................................. 20 Troubleshooting ......................................... 21 Specifications ............................................ 23 Accessories (supplied/optional) ................ 25

9-873-052-11 2001A0200-1 © 2001.1 Sony Corporation Audio Entertainment Group General Engineering Dept. Ver 1.0 2001.01 SERVICE MANUAL PORTABLE CD PLAYER US Model D-EJ721/EJ725 Canadian Model AEP Model UK Model E Model Australian Model Chinese Model D-EJ725 Tourist Model D-E777 Model Name Using Similar Mechanism D-EJ621 CD Mechanism Type CDM-3123EBA Optical Pick-up Type DAX-23E SPECIFICATIONS System Compact disc digital audio system Laser diode properties Material: GaAIAs Wavelength : λ= 780 nm Emission duration: Continuous Laser output : 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 with 7 mm aperture. ) D-A conversion 1-bit quartz time-axis control Frequency response 20 - 20,000 Hz +1 dB (measured by EIAJ CP- 307) –2 Output (at 4.5 V input level) Line output (stereo minijack) Output level 0.7 V rms at 47 kΩ Recommended load impedance over 10 kΩ Headphones (stereo minijack) Approx. 5 mW + Approx. 5 mW at 16 Ω (Approx. 1 mW + Approx. 1 mW at 16 Ω)* *For the customers in France Optical digital output (optical output connector) Output level: –21 - –15 dBm Wavelength: 630 - 690 nm at peak level Power requirements For the area code of the model you purchased, check the upper left side of the bar code on the package. • Two Sony NC-WMAA rechargeable batteries: 2.4 V DC, • Sony NH-WM2AA rechargeable batteries: 2.4 V DC, • Two LR6 (size AA) batteries: 3 V DC • AC power adaptor (DC IN 4.5 V jack): US, Canadian, MX model: 120 V, 60 Hz AEP, FR, EE, G, E13 model: 220 - 230 V, 50/60 Hz UK model: 230 - 240 V, 50 Hz AUS model: 240 V, 50 Hz JEW, E33 model: 100 - 240 V, 50/60 Hz HK model: 220 V, 50/60 Hz CH model: 220 V, 50 Hz • Sony DCC-E345 car battery cord for use on car battery : 4.5V DC Battery life* (approx. hours) (When you use the CD player on a flat and stable surface.) Playing time varies depending on how the CD player is used. When using G-PROTECTION function on off Tow NC-WMAA 10 8 (charged for about 3 hours**) NH-WM2AA 22 20 (charged for about 5 hours**) Two Sony alkaline batteries 38 34 LR6 (SG) Four Sony alkaline batteries 86 76 LR6 (SG) Two rechargeable batteries 50 44 NC-WMAA and two Sony alkaline batteries LR6 (SG) Rechargeable batteries 64 54 NH-WM2AA and two Sony alkaline batteries LR6 (SG) * Measured value by the standard of EIAJ (Electronic Industries Association of Japan). ** Charging time varies depending on how the rechargeable battery is used. – Continued on page 2 – Photo : D-EJ725 D-E777/EJ721/EJ725 2 D-E777/EJ721/EJ725 Specifications ............................................................................ 1 1. SERVICING NOTES ................................................... 3 2. GENERAL Locating the Controls......................................................... 4 3. DISASSEMBLY 3-1. Cabinet (Rear), Cabinet (Front) .................................. 6 3-2. MD ASSY, Main board ............................................... 6 3-3. “Motor ASSY, Turn Table (Spindle) (M901)” ............ 7 3-4. “Motor ASSY (Sled) (M902)”, Optical Pick-up (DAX-23E) ...................................... 7 3-5. “Lid, Upper”, Switch Unit .......................................... 7 4. ELECTRICAL ADJUSTMENTS ............................. 8 5. DIAGRAMS 5-1. Explanation of IC Terminals ....................................... 9 5-2. Block Diagram...........................................................11 5-3. Printed Wiring Boards – Main Section (Side A) – ... 12 5-4. Printed Wiring Boards – Main Section (Side B) – ... 13 5-5. Schematic Diagram – Main Section (1/2) – ............. 14 5-6. Schematic Diagram – Main Section (2/2) – ............. 15 6. EXPLODED VIEWS 6-1. Cabinet Section ......................................................... 18 6-2. Optical pick-up Section (CDM-3123EBA) .............. 20 7. ELECTRICAL PARTS LIST ................................... 21 ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. SAFETY-RELATED COMPONENT WARNING!! 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. Flexible Circuit Board Repairing • Keep the temperature of the soldering iron around 270°C during repairing. • Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). • Be careful not to apply force on the conductor when soldering or unsoldering. Notes on chip component replacement • Never reuse a disconnected chip component. • Notice that the minus side of a tantalum capacitor may be dam- aged by heat. TABLE OF CONTENTS CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. DANGER Invisible laser radiation when open and interlock failed or defeated. Avoid direct exposure to beam. • Abbreviation AUS : Australian FR : French HK : Hong Kong G : German JEW : Tourist CH : Chinese EE : East European KR : Korean E13 : AC220-230V area model E33 : AC100-240V area model Operating temperature 5°C - 35°C (41°F - 95°F) Dimensions (w/h/d) (excluding projecting parts and controls) Approx. 131.6 x 25.5 x 140.9 mm (51/4 x 11/16 x 55/8 in.) Mass (excluding accessories) Approx. 193 g (6.9 oz) Supplied accessories For the area code of the location in which you purchased the CD player, check the upper left side of the bar code on the package. AC power adaptor (1) Headphones/earphones with remote control (1) Rechargeable batteries (2) Battery carrying case (1) Carrying pouch (1)*1 External battery case (1) AC plug adaptor (1)*2 *1 Not supplied with Canadian, AEP, G, UK, FR and EE models *2 Supplied with JEW and E33 models Design and specifications are subject to change without notice. 3 D-E777/EJ721/EJ725 The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown 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 emission, observe from more than 30cm away from the objective lens. Before Replacing the Optical pick-up Block Please be sure to check thoroughly the parameters as per the “Optical pick-up Block Checking Procedure” (Part No. : 9-960-027-11) issued separately before replacing the optical Pick-up block. Note and specifications required to check are given below. • FOK output : IC601 eg pin When checking FOK, remove the lead wire to disc motor. • RF signal P-to-P value : 0.45 to 0.65Vp-p (D-E777/EJ725) : 0.38 to 0.6Vp-p (D-EJ721) SECTION 1 SERVICING NOTES Laser Diode Checking Methods During normal operation of the equipment, emission of the laser diode is prohibited unless the upper panel is closed while turning ON the S801 (push switch type). The following checking method for the laser diode are operable. Method : Emission of the laser diode is visually checked. 1. Open the upper lid. 2. Push the S801 as shown in Fig. 1. 3. Check the object lens for confirming normal emission of the laser diode. If not emitting, there is a trouble in the automatic power control circuit or the optical pick-up. During normal operation, the laser diode is turned ON about 2.5 seconds for focus searching. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT Fig.1 Method to push S801 S801