Sony hcd vx 3a
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2 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. 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 emission, observe from more than 30 cm away from the objective lens. 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 dur- ing 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 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. 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. The following caution label is located inside the unit. Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range 87.5-108.0 MHz Antenna FM lead antenna Antenna terminals 75 W unbalanced Intermediate frequency 10.7 MHz AM tuner section Tuning range 2 Band type: 531-1,602 kHz (with the interval set at 9 kHz) 530-1,710 kHz (with the interval set at 10 kHz) 3 Band type: Middle Eastern models: MW: 531-1,602 kHz (with the interval set at 9 kHz) SW: 5.95-17.90 MHz (with the interval set at 5 kHz) Other models: MW: 531-1,602 kHz (with the interval set at 9 kHz) 530-1,710 kHz (with the interval set at 10 kHz) SW: 5.95-17.90 MHz (with the interval set at 5 kHz) Antenna AM loop antenna Antenna terminals External antenna terminal Intermediate frequency 450 kHz General Power requirements Thailand models: 220-240 V AC, 50/60 Hz Other models: 110-120 V or 220-240 V AC, 50/60 Hz Power consumption 110 W Dimensions (w/h/d) Approx. 280 ´ 340 ´ 380 mm (11 ´ 13 3/8 ´ 15 in.) Mass: Approx. 9.5 kg (21 lb.) Supplied accessories: AM loop antenna (1) Remote commander (1) Batteries (2) FM lead antenna (1) Front speaker pads (8) Video connecting cable (1) Design and specifications are subject to change without notice.
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3 TABLE OF CONTENTS 1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges. 2. Check the interboard wiring to ensure that no wires are "pinched" or contact high-wattage resistors. 3. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement. 4. Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement. 5. Check the B+ voltage to see it is at the values specified. 6. Flexible Circuit Board Repairing ¥ Keep the temperature of the soldering iron around 270ûC 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. SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer. 1. SERVICING NOTES ááááááááááááááááááááááááááááááááááááááááááááááááááá\ 4 2. GENERAL ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááá 5 3. DISASSEMBLY 3-1. Case ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááááááááááááááááááááá 7 3-2. Front Panel Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááá 7 3-3. Tape Mechanism Deck Section (TCM-230AWR2/230PWR2) áááááááááááááááááááááááááááááááááááááááááááá 8 3-4. CD Mechanism Deck section (CDM38L-5BD34L) áááááááááá 8 3-5. Main Board ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááááááá 9 4. TEST MODE ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááá 10 5. MECHANICAL ADJUSTMENTS áááááááááááááááááááááááááá 13 6. ELECTRICAL ADJUSTMENTS ááááááááááááááááááááááááááá 13 7. DIAGRAMS 7-1. Circrit Boards Location ááááááááááááááááááááááááááááááááááááááááááááááááááá\ á 18 7-2. Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááá 19 · CD Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááá 19 · Video Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááá 20 · Tape Deck Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááá 21 · Main Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááááááááááá 22 · Display/Key Con Section áááááááááááááááááááááááááááááááááááááááááááááá 23 7-3. Printed Wiring Board Main Section ááááááááááááááááááááááááááááááá 25 7-4. Schematic Diagram Main Section (1/4) ááááááááááááááááááááááááá 26 7-5. Schematic Diagram Main Section (2/4) ááááááááááááááááááááááááá 27 7-6. Schematic Diagram Main Section (3/4) ááááááááááááááááááááááááá 28 7-7. Schematic Diagram Main Section (4/4) ááááááááááááááááááááááááá 29 7-8. Printed Wiring Board CD Section áááááááááááááááááááááááááááááááááá 30 7-9. Schematic Diagram CD Section ááááááááááááááááááááááááááááááááááááá 31 7-10. Printed Wiring Board CD Motor Section ááááááááááááááááááááááá 32 7-11. Schematic Diagram CD Motor Section áááááááááááááááááááááááááá 33 7-12. Printed Wirint Board Tape Deck Section ááááááááááááááááááááááá 34 7-13. Schematic Diagram Tape Deck Section ááááááááááááááááááááááááá 35 7-14. Printed Wiring Board Panel Section ááááááááááááááááááááááááááááááá 36 7-15. Schematic Diagram Panel Section ááááááááááááááááááááááááááááááááá 37 7-16. Printed Wiring Board AC Sec Standby Section ááááááááááááá 38 7-17. Schematic Diagram AC Sec Standby Section áááááááááááááááá 39 7-18. Printed Wiring Board Leaf SW Section ááááááááááááááááááááááááá 40 7-19. Schematic Diagram Leaf SW Section áááááááááááááááááááááááááááá 40 7-20. Printed Wiring Board CD SW Section ááááááááááááááááááááááááááá 41 7-21. Schematic Diagram CD SW Section áááááááááááááááááááááááááááááá 41 7-22. Printed Wiring Board Video Section áááááááááááááááááááááááááááááá 42 7-23. Schematic Diagram Video Section (1/3) áááááááááááááááááááááááá 43 7-24. Schematic Diagram Video Section (2/3) áááááááááááááááááááááááá 44 7-25. Schematic Diagram Video Section (3/3) áááááááááááááááááááááááá 45 7-26. IC Block Diagrams ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááá 46 7-27. IC PIN Function Description áááááááááááááááááááááááááááááááááááááááááááá 49 8. EXPLODED VIEWS 8-1. Case Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááááááá 58 8-2. Front Panel Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ ááááááá 59 8-3. Chassis Section ááááááááááááááááááááááááááááááááááááááááááááááááááá\ áááááááááááááá 60 8-4. CD Mechanism Deck Section-1 (CDM38L-5BD34L) áááá 61 8-5. CD Mechanism Deck Section-2 (CDM38L-5BD34L) áááá 62 8-6. Base Unit Section (BU-5BD32L) ááááááááááááááááááááááááááááááááááááá 63 8-7. TC Mechanism Section-1(TCM-230AWR2/230PWR2) á 64 8-8. TC Mechanism Section-2(TCM-230AWR2/230PWR2) á 65 9. ELECTRICAL PARTS LIST ááááááááááááááááááááááááááááááááááá 66