Sony hcd rxd 2 service manual
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Ñ 2 Ñ 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. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. 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. 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.
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Ñ 3 Ñ TABLE OF CONTENTS 1. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááááááá 4 2. DISASSEMBLY 2-1. CD Door ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááááááá 5 2-2. CD Mechanism Deck ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááá 6 2-3. Front Panel ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááá 6 2-4. Main Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááá 7 2-5. Front Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááá 7 2-6. CD Tray ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááááááááááá 8 2-7. CD Decord Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááá 8 2-8. Base Unit ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááááááááá 9 2-9. Cassette Lid (L) / (R) ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááá 9 3. TEST MODE ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááá 10 4. MECHANICAL ADJUSTMENTS ááááááááááááááááááááááááááááá 11 5. ELECTRICAL ADJUSTMENTS ááááááááááááááááááááááááááááááá 11 6. DIAGRAMS 6-1. Circuit Boards Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\ 16 6-2. Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááá 17 · Tuner, CD Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááá 17 · Main Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááá 19 6-3. Printed Wiring Board Ð CD Decoder Section Ð ááááááááááááááá 23 6-4. Schematic Diagram Ð CD Decoder Section Ð áááááááááááááááááá 25 6-5. Printed Wiring Board Ð Front Section Ð ááááááááááááááááááááááááááá 27 6-6. Schematic Diagram Ð Front Section Ð áááááááááááááááááááááááááááááá 29 6-7. Printed Wiring Board Ð Main Section Ð ááááááááááááááááááááááááááá 31 6-8. Schematic Diagram ÐMain (1/4) Section Ð áááááááááááááááááááááá 33 6-9. Schematic Diagram Ð Main (2/4) Section Ð ááááááááááááááááááááá 35 6-10. Schematic Diagram Ð Main (3/4) Section Ð ááááááááááááááááááááá 37 6-11. Schematic Diagram Ð Main (4/4) Section Ð ááááááááááááááááááááá 39 6-12. IC Pin Function ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááá 41 6-13. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááá 43 7. EXPLODED VIEWS 7-1. Cabinet Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááá 47 7-2. Front Panel Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááá 48 7-3. CD Mechanism Deck Section-1 ááááááááááááááááááááááááááááááááááááááá 49 7-4. CD Mechanism Deck Section-2 ááááááááááááááááááááááááááááááááááááááá 50 7-5. Base Unit Section (KSM-213ECM) ááááááááááááááááááááááááááááááááá 51 8. ELECTRICAL PARTS LIST ááááááááááááááááááááááááááááááááááááááá 52