Sony cfd g 30 g 50
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Ñ 2 Ñ TABLE OF CONTENTS 1. SERVICE NOTES ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááá 3 2. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááááááá 4 3. DISASSEMBLY 3-1. Front Cabinet Assy ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááá 5 3-2. Control-1, Head Phone Board áááááááááááááááááááááááááááááááááááááááááááá 6 3-3. Cabinet (Upper) Assy ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááá 6 3-4. Power, Batt, Tuner, Batt Com Board áááááááááááááááááááááááááááááááááá 7 3-5. Main, Line In, LCD Board ááááááááááááááááááááááááááááááááááááááááááááááááá 7 3-6. CD Board, Optical Pick-up Section, Mechanism Deck ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááá 8 4. ADJUSTMENT 4-1. Mechanical Adjustment ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááá 9 4-2. Electrical Adjustment ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááá 9 5. DIAGRAM 5-1. Circuit Boards Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\ 12 5-2. Block Diagrams Ð Tuner Section Ð ááááááááááááááááááááááááááááááááááá 13 Ð Main Section Ð ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááá 15 5-3. Schematic Diagram Ð CD Section Ð ááááááááááááááááááááááááááááááááá 18 5-4. Printed Wiring Board Ð CD Section Ð áááááááááááááááááááááááááááááá 21 5-5. Schematic Diagram Ð Cassette Deck Section Ð áááááááááááááááá 23 5-6. Printed Wiring Board Ð Cassette Deck Section Ð ááááááááááááá 25 5-7. Schematic Diagram Ð Tuner Section Ð ááááááááááááááááááááááááááááá 27 5-8. Printed Wiring Board Ð Tuner Section Ð áááááááááááááááááááááááááá 29 5-9. Printed Wiring Board Ð Main Section Ð ááááááááááááááááááááááááááá 31 5-10. Schematic Diagram Ð Main Section (1/2) Ð ááááááááááááááááááááá 33 5-11. Schematic Diagram Ð Main Section (2/2) Ð ááááááááááááááááááááá 35 5-12. Printed Wiring Board and Schematic Diagram Ð Control Section Ð ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááá 37 5-13. Schematic Diagram Ð Power Section Ð áááááááááááááááááááááááááááá 39 5-14. Printed Wiring Board Ð Power Section Ð ááááááááááááááááááááááááá 41 5-15. IC Pin Function Description ááááááááááááááááááááááááááááááááááááááááááááá 43 5-16. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááá 45 6. EXPLODED VIEWS 6-1. Front Cabinet Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááá 49 6-2. Rear Cabinet Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááá 50 6-3. Upper Cabinet Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááá 51 6-4. Mechanism Deck Section (1) (MF-V10-117) áááááááááááááááááá 52 6-5. Mechanism Deck Section (2) (MF-V10-117) áááááááááááááááááá 53 6-6. Optica Pick-up Section (KSM-213CDM) áááááááááááááááááááááááá 54 7. ELECTRICAL PARTS LISTááááááááááááááááááááááááááááááááááá 55 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 PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT Ë LA SƒCURITƒ! LES COMPOSANTS IDENTIFƒS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIéSES SONY DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU DANS LES SUPPƒMENTS PUBLIƒS PAR SONY. After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, ÒmetallizedÓ 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 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 manufacturersÕ 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 ÒlimitÓ indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY CHECK-OUT To Exposed Metal Parts on Set 0.15 µF 1.5 k ½ AC Voltmeter (0.75 V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage.
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Ñ 3 Ñ SECTION 1 SERVICE NOTES NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 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 30 cm away from the objective lens. CHUCK PLATE JIG ON REPAIRING On repairing CD section, playing a disc without the CD lid, use Chuck Plate Jig. · Code number of Chuck Plate Jig : X-4918-255-1 LASER DIODE AND FOCUS SEARCH OPERATION CHECK 1. Press CD open knob. 2. Open the lid for CD. 3. Push on SWITCH (S801) as following figure. 4. Confirm the laser diode emission while observing the objecting lens. When there is no emission, Auto Power Control circuit or Optical Pick-up is broken. Objective lens moves up and down once for the focus search. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. The following caution label is located inside the unit. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Insert a precision screw driver and push SWITCH(S801)