Sony cdp xa50es cd service manual

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Ð 2 Ð TABLE OF CONTENTS 1. SERVICING NOTES 1-1. How to Open the Disc Tray When Power Switch Turns Off .......................................................................... 3 1-2. Preparation for Adjustment and Measurement ................ 3 2. GENERAL ................................................................... 4 3. DISASSEMBLY .......................................................... 15 4. TEST MODE 4-1. AF Mode .......................................................................... 20 4-2. ADJ Mode ....................................................................... 21 4-3. CLV-S Mode .................................................................... 21 5. ELECTRICAL ADJUSTMENTS ......................... 22 6. DIAGRAMS 6-1. Printed Wiring Boards Ñ SERVO Section Ñ ................. 25 6-2. Schematic Diagram Ñ SERVO Section Ñ ..................... 27 6-3. Schematic Diagram Ñ AUDIO Section Ñ ..................... 32 6-4. Printed Wiring Boards Ñ AUDIO Section Ñ ................. 37 6-5. Printed Wiring Boards Ñ PANEL Section Ñ ................. 39 6-6. Schematic Diagram Ñ PANEL Section Ñ ..................... 41 6-7. Printed Wiring Boards Ñ POWER SUPPLY Section Ñ ..................................... 44 6-8. Schematic Diagram Ñ POWER SUPPLY Section Ñ ..................................... 47 6-9. IC Pin Function Description ............................................ 54 7. EXPLODED VIEWS ................................................ 60 8. ELECTRICAL PARTS LIST ................................ 66 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 PUB- LISHED BY SONY. MODEL IDENTIFICATION Ð BACK PANEL Ð 4-986-742- AEP Model : 1 ¹ (CED) Singapore Model : 2 ¹ (SP)

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Ð 3 Ð SECTION 1 SERVICING NOTES 1-1. H OW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF Insert a tapering driver into the aperture of the unit bottom, and turn in the direction of arrow (to OUT direction). NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- static 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. 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. 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. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. [SERVO BOARD] Ð Conductor side Ð IC91IC101 +5 V IC261 1 1-2.PREPARATION FOR ADJUSTMENT AND MEASUREMENT Perform connecting the IC261 pin 2 of SERVO board to the line of +5V because this unit does not work without the stabilizer struc- turally. tray tapering driver *To close the disc tray, turn the tapering driver in the reverse direction (to IN di- rection). 2