Sony hcd lx 6 service manual
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Extracted text from sony hcd lx 6 service manual (Ocr-read)
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2 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 COM- POSANTS 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 PUB- LISHED BY SONY.
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3 SECTION 1 SERVICING NOTES 1. SERVICING NOTES ............................................... 3 2. GENERAL Location of Controls ....................................................... 4 Setting the Time .............................................................. 6 3. DISASSEMBLY ......................................................... 7 4. DIAGRAMS 4-1. Note for Printed Wiring Boards and Schematic Diagrams ....................................................... 11 4-2. Printed Wiring Board – BD Board – .............................. 12 4-3. Schematic Diagram – BD Board – ................................ 13 4-4. Printed Wiring Boards – CD MOTOR Section – .......... 14 4-5. Schematic Diagram – CD MOTOR Section – .............. 15 4-6. Printed Wiring Board – AUDIO Board – ...................... 16 4-7. Schematic Diagram – AUDIO Board – ......................... 17 4-8. Printed Wiring Board – LEAF SW Board – .................. 18 4-9. Schematic Diagram – LEAF SW Board – ..................... 18 4-10. Printed Wiring Board – MAIN Board – ........................ 19 4-11. Schematic Diagram – MAIN Board (1/3) – .................. 20 4-12. Schematic Diagram – MAIN Board (2/3) – .................. 21 4-13. Schematic Diagram – MAIN Board (3/3) – .................. 22 4-14. Printed Wiring Board – PANEL FL Board – ................. 24 4-15. Schematic Diagram – PANEL FL Board – .................... 25 4-16. Printed Wiring Board – PANEL VR Board – ................ 26 4-17. Schematic Diagram – PANEL VR Board – ................... 27 4-18. Printed Wiring Boards – TC-A/TC-B/CD-L/ CD-L2/CD-R/CD-R2 Boards – ...................................... 28 4-19. Schematic Diagram – TC-A/TC-B/CD-L/ CD-L2/CD-R/CD-R2 Boards – ...................................... 29 4-20. Printed Wiring Boards – FRONT INPUT/ HEADPHONE/MIC Boards – ........................................ 30 4-21. Schematic Diagram – FRONT INPUT/ HEADPHONE/MIC Boards – ........................................ 31 4-22. Printed Wiring Board – PA Board – .............................. 32 4-23. Schematic Diagram – PA Board – ................................. 33 4-24. Printed Wiring Boards – TRANS/SUB TRANS (LX5/LX30/LX50) Boards – .......................................... 34 4-25. Schematic Diagram – TRANS/SUB TRANS (LX5/LX30/LX50) Boards – .......................................... 35 5. EXPLODED VIEWS ................................................ 38 6. ELECTRICAL PARTS LIST ............................... 46 TABLE OF CONTENTS 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 TEST 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 microamperes.). 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) Fig. A. Using an AC voltmeter to check AC leakage. 1.5 k Ω 0.15 µF AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground