Sony hcd v 3900 service manual

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Ñ 2 Ñ 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. 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. The following caution label is located inside the unit. Tape player section Recording system 4-track 2-channel stereo Frequency response (DOLBY NR OFF) 60 Ð 13,000 Hz (±3 dB), using a Sony TYPE I cassette 60 Ð 14,000 Hz (±3 dB), using a Sony TYPE II cassette Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner sectionTuning range 87.5 Ð 108.0 MHz (50 kHz step) Antenna FM wire antenna Antenna terminals 75 ohm unbalanced Intermediate frequency 10.7 MHz AM tuner sectionTuning range 531 Ð 1,602 MHz (with the tuning interval set at 9 kHz) 530 Ð 1,710 MHz (with the tuning interval set at 10 kHz) Antenna AM loop antenna, External antenna terminals Intermediate frequency 450 kHz General Power requirements 110 Ð 120 V or 220 Ð 240 V AC, 50/60 Hz adjustable with voltage selector Power consumption (HCD-V3900) 245 watts (HCD-V5900) 255 watts Dimensions (w/h/d) Approx. 355 ´ 425 ´ 435 mm incl. projecting parts and controls Mass (HCD-V3900) Approx. 16.3 kg (HCD-V5900) Approx. 16.8 kg Supplied accessories AM loop antenna (1) Remote (1) RM-SV808S (LBT-V3900) RM-SV4800S (LBT-V5900) Size AA batteries (2) FM wire antenna (1) Speaker cords (2) Video cable (1) Design and specifications are subject to change without notice.

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Ñ 3 Ñ TABLE OF CONTENTS 1. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááá 4 2. DISASSEMBLY ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááá 7 3. TEST MODE ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááá 15 4. MECHANICAL ADJUSTMENTS ááááááááááááááááááááááááá 18 5. ELECTRICAL ADJUSTMENTS DECK Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááá 18 CD Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááá 21 VIDEO Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááá 22 6. DIAGRAMS 6-1. Block Diagram Ñ BD Section Ñ ááááááááááááááááááááááááááááááááááááá 23 6-2. Block Diagram Ñ VIDEO Section Ñ áááááááááááááááááááááááááááááá 25 6-3. Block Diagram Ñ MAIN Section Ñ áááááááááááááááááááááááááááááááá 27 6-4. Circuit Board Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááá 29 6-5. Schematic Diagram Ñ BD Section Ñ áááááááááááááááááááááááááááááá 31 6-6. Printed Wiring Board Ñ BD Section Ñ ááááááááááááááááááááááááááá 33 6-7. Schematic Diagram Ñ CD MOTOR Section Ñ ááááááááááááááá 35 6-8. Printed Wiring Board Ñ CD MOTOR Section Ñ áááááááááááá 37 6-9. Schematic Diagram Ñ AUDIO Section Ñ ááááááááááááááááááááááá 39 6-10. Printed Wiring Board Ñ AUDIO Section Ñ áááááááááááááááááááá 41 6-11. Printed Wiring Board Ñ MAIN Section Ñ áááááááááááááááááááááá 43 6-12. Schematic Diagram Ñ MAIN Section (1/3) Ñ áááááááááááááááá 45 6-13. Schematic Diagram Ñ MAIN Section (2/3) Ñ áááááááááááááááá 47 6-14. Schematic Diagram Ñ MAIN Section (3/3) Ñ áááááááááááááááá 49 6-15. Printed Wiring Board Ñ VIDEO Section Ñ áááááááááááááááááááá 51 6-16. Schematic Diagram Ñ VIDEO Section (1/3) Ñ áááááááááááááá 53 6-17. Schematic Diagram Ñ VIDEO Section (2/3) Ñ áááááááááááááá 55 6-18. Schematic Diagram Ñ VIDEO Section (3/3) Ñ áááááááááááááá 57 6-19. Schematic Diagram Ñ PANEL Section Ñ ááááááááááááááááááááááá 59 6-20. Printed Wiring Board Ñ PANEL Section Ñ áááááááááááááááááááá 61 6-21. Schematic Diagram Ñ VIDEO OUT Section Ñ áááááááááááááá 63 6-22. Printed Wiring Board Ñ VIDEO OUT Section Ñ ááááááááááá 65 6-23. Schematic Diagram Ñ AMP KEY CONTROL Section Ñ 67 6-24. Printed Wiring Board Ñ AMP/KEY CONTROL Section Ñ ááááááááááááááááááááááááááááááá 69 6-25. Schematic Diagram Ñ POWER Section Ñ áááááááááááááááááááááá 71 6-26. Printed Wiring Board Ñ POWER Section Ñ ááááááááááááááááááá 73 6-27. IC Pin Function Description áááááááááááááááááááááááááááááááááááááááááááááá 74 6-28. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááá 83 7. EXPLODED VIEWS ááááááááááááááááááááááááááááááááááááááááááááááááá 88 8. ELECTRICAL PARTS LIST áááááááááááááááááááááááááááááááááá 97 SERVICING NOTES The laser diode in the optical pick-up block may suffer electrostatic 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 ÒS curve checkÓ in ÒCD section adjustmentÓ and check that the S curve waveforms is output three times. 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. Flexible Circuit Board Repairing ¥ Keep the temperature of the soldering iron around 270 ûC 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 HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT