Sony d ej 855 service manual

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2 D-EJ855 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 ËšC 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. TABLE OF CONTENTS 1. SERVICING NOTES ............................................... 3 2. GENERAL ................................................................... 6 3. DISASSEMBLY 3-1. Disassembly Flow ........................................................... 7 3-2. Upper Lid (M) Sub Assy ................................................. 7 3-3. Cabinret (Upper) Sub Assy ............................................. 8 3-4. MAIN Board, Optical Pick-up Section (CDM-3325ES) ............................................................... 8 4. ELECTRICAL CHECK .......................................... 9 5. DIAGRAMS 5-1. Block Diagram -“ MAIN Section (1/2) -“....................... 10 5-2. Block Diagram -“ MAIN Section (2/2) -“....................... 11 5-3. Block Diagram -“ POWER SUPPLY Section -“............. 12 5-4. Note for Printed Wiring Boards and Schematic Diagrams ....................................................... 13 5-5. Printed Wiring Board ...................................................... 14 5-6. Schematic Diagram -“ MAIN Board (1/3) -“.................. 15 5-7. Schematic Diagram -“ MAIN Board (2/3) -“.................. 16 5-8. Schematic Diagram -“ MAIN Board (3/3) -“.................. 17 5-9. IC Pin Function Description ........................................... 18 6. EXPLODED VIEWS 6-1. Upper Lid, Cabinet (Upper) Section .............................. 25 6-2. Cabinet (Lower) Section ................................................. 26 3-4. Optical Pick-up Section (CDM-3325ES) ....................... 27 7. ELECTRICAL PARTS LIST ............................... 28 This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior.CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. On AC power adaptor -Use only the AC power adaptor supplied or recommended in Accessories (supplied/ optional). Do not use any other AC power adaptor. It may cause a malfunction. Polarity of the plug 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 PUB- LISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT Ã- LA SÉCURITÉ! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.