Sony wx 4500x ver 1 0

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2 SERVICE NOTE CAUTION Use of controls or adjustments or performance of proce- dures other than those specified herein may result in haz- ardous radiation exposure. 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. 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, ob- serve from more than 30 cm away from the objective lens. NOTES ON PICK-UP FLEXIBLE BOARD The pick-up flexible board in this set is secured to the optical pick- up with an adhesive tape. Once the tape is removed, an adhering force becomes weak, and it cannot be reused. Therefore, if the optical pick-up is replaced, replace also the pick- up flexible board with a new one. 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 PUBLISHED BY SONY. AM Tuning range AM tuning interval: 9 kHz/10 kHz switchable 531 - 1,602 kHz (at 9 kHz step) 530 -“ 1,710 kHz (at 10 kHz step) Antenna terminal External antenna connector Intermediate frequency 10.7 MHz/450 kHz Sensitivity 30 µV Power amplifier sectionOutputs Speaker outputs (sure seal connectors) Speaker impedance 4 -“ 8 ohms Maximum power output 50 W × 4 (at 4 ohms) GeneralOutputs Audio output Subwoofer outout (mono) Power antenna relay control lead Power amplifier control lead Inputs Telephone ATT control lead Illumination control lead BUS control input connector BUS audio input connector Remote controller input connector Antenna input connector Tone controls Bass ±10 dB at 62 Hz Treble ±10 dB at 16 kHz Loudness +8 dB at 100 Hz +2 dB at 10 kHz Power requirements 12 V DC car battery (negative ground) Dimensions Approx. 178 × 100 × 186 mm (7 1/8 × 4 × 7 3/8 in.) (w/h/d) Mounting dimension Approx. 178 × 100 × 165 mm (7 1/8 × 4 × 6 1/2 in.) (w/h/d) Mass Approx. 2.1 kg (4 lb. 10 oz.) Supplied accessories Parts for installation and connections (1 set) NOTEThis unit cannot be connected to a digital preamplifier or an equalizer. Design and specifications are subject to change without notice. WX-4500X

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3 TABLE OF CONTENTS 1. GENERAL Location of Controls ............................................................... 4 Getting Started ........................................................................ 5 CD Player ............................................................................... 5 Cassette Player ....................................................................... 6 Radio ...................................................................................... 6 Other Functions ...................................................................... 7 Connections ............................................................................ 9 2. DISASSEMBLY 2-1. Front Panel Assy .............................................................. 11 2-2. CD Mechanism Block ...................................................... 12 2-3. CD Main Board ................................................................ 12 2-4. Tension Spring (FL) ......................................................... 13 2-5. Floating Block Assy ......................................................... 13 2-6. Roller Arm Assy ............................................................... 14 2-7. Optical Pick-up Assy ........................................................ 14 2-8. Chassis (Top) Assy ........................................................... 15 2-9. Main Board ...................................................................... 15 2-10. Heat Sink .......................................................................... 16 2-11. Tape Mechanism Block .................................................... 16 3. ASSEMBLY OF MECHANISM DECK 3-1. Housing ............................................................................ 17 3-2. Arm (Suction) ................................................................... 17 3-3. Lever (LDG-A)/(LDG-B) ................................................ 18 3-4. Gear (Loading FT) ........................................................... 18 3-5. Guide (U) ......................................................................... 19 3-6. Main Motor Assy ............................................................. 19 4. MECHANICAL ADJUSTMENTS .............................. 20 5. ELECTRICAL ADJUSTMENTS Tape Section ......................................................................... 20 6. DIAGRAMS 6-1. IC Pin Descriptions .......................................................... 22 6-2. Block Diagram -“CD Section-“ .......................................... 26 6-3. Block Diagram -“Tuner Section-“ ...................................... 27 6-4. Block Diagram -“Tape Section-“ ....................................... 28 6-5. Circuit Boards Location ................................................... 29 6-6. Printed Wiring Boards -“CD Mechanism Section-“ ........... 30 6-7. Schematic Diagram -“CD Mechanism Section -“ .............. 31 6-8. Printed Wiring Board -“Main Section-“ ............................. 32 6-9. Schematic Diagram -“Main Section (1/3)-“ ....................... 34 6-10. Schematic Diagram -“Main Section (2/3)-“ ....................... 35 6-11. Schematic Diagram -“Main Section (3/3)-“ ....................... 36 6-12. Printed Wiring Board -“Jog Section-“ ................................ 37 6-13. Printed Wiring Board -“Display Section-“ ......................... 38 6-14. Schematic Diagram -“Display, Jog Section-“ .................... 40 7. EXPLODED VIEWS 7-1. Cover Section ................................................................... 46 7-2. Front Panel Section .......................................................... 47 7-3. Main Board Section ......................................................... 48 7-4. CD Mechanism Section (1) .............................................. 49 7-5. CD Mechanism Section (2) .............................................. 50 7-6. Tape Mechanism Section ................................................. 51 8. ELECTRICAL PARTS LIST................................... 52 WX-4500X