Sony cdp sp 55 service manual

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2 TABLE OF CONTENTS 1. SERVICING NOTE ··························································4 2. GENERAL ··········································································6 3. DISASSEMBLY 3-1. Case····················································································7 3-2. Front Panel Assy·································································7 3-3. CD Mechanism Deck (CDM55C-K6BD38)······················8 3-4. Main Board·········································································8 3-5. CAM, GEAR······································································9 3-6. Holder Assy········································································9 3-7. Optical Pick-up·································································10 3-8. BD Board··········································································10 4. ELECTRICAL ADJUSTMENT ··································11 5. DIAGRAMS5-1. Circuit Boards Location···················································14 5-2. Block Diagram·································································15 5-3. Printed Wiring Board -“ BD Section -“ ······························16 5-4. Schematic Diagram -“ BD Section -“ ·································17 5-5. Printed Wiring Board -“ Main Section -“ ···························18 5-6. Schematic Diagram -“ Main Section -“ ······························19 5-7. Printed Wiring Board -“ Loading Section -“ ······················20 5-8. Schematic Diagram -“ Loading Section -“ ·························20 5-9. IC Block Diagram····························································20 6. EXPLODED VIEWS6-1. Case and Front Panel Section···········································22 6-2. CD Mechanism Deck Section (CDM55C-K6BD38)·······23 6-3. Base Unit Section (BU-6BD38)·······································24 7. ELECTRICAL PARTS LIST ·······································25

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3 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. Notes on chip component replacement -Never reuse a disconnected chip component. -Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing -Keep the temperature of soldering iron around 270ËšC 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 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.MODEL IDENTIFICATION - BACK PANEL - - Abbreviation AED : North European model HK : Hong Kong model MY : Malaysia model SP : Singapore model KR : Korea model MODEL AEP,UK,AED models HK,MY,SP models KR model PARTS No. 4-229-674-0s 4-229-674-2s 4-229-674-3s 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. Parts No.