Sony CDP CE305 Service Manual
This is the 36 pages manual for Sony CDP CE305 Service Manual.
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Extracted text from Sony CDP CE305 Service Manual (Ocr-read)
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Ñ 2 ÑTABLE OF CONTENTS Section Title Page SECTION 1. GENERAL................................................ 5 SECTION 2. DISASSEMBLY 2-1. Case, Bottom Plate and Front Panel .................................. 6 2-2. Back Panel and Disc Table ................................................ 6 2-3. Optical Pick-up Block Assembly ....................................... 7 2-4. Bracket (Gear) Assembly ................................................... 7 SECTION 3. ELECTRICAL BLOCK CHECKING.... 8 SECTION 4. DIAGRAMS 4-1. Circuit Boards Location ................................................... 10 4-2. Printed Wiring Board Ñ BD Section Ñ ......................... 11 4-3. Schematic Diagram Ñ BD Section Ñ ............................ 13 4-4. IC Block Diagrams .......................................................... 15 4-5. Printed Wiring Board Ñ Main Section Ñ ...................... 17 4-6. Schematic Diagram Ñ Main Section Ñ ......................... 21 4-7. IC Pin Functions ¥ IC101 Digital Signal Processor (CXD2545Q) .............. 24 ¥ IC303 System Control (CXP82320-064Q) ................... 27 SECTION 5. EXPLODED VIEWS 5-1. Front Panel and Case Section .......................................... 28 5-2. Back Panel and Disk Table Section ............................... 29 5-3. Chassis Section ................................................................. 30 5-4. Base Unit Section (BU-5BD20) ...................................... 31 SECTION 6. ELECTRICAL PARTS LIST............... 32 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.ATTENTION AU COMPOSANT AYANT RAPPORT Ë LA SƒCURITƒ!! LES COMPOSANTS IDENTIFIƒS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHƒMATIQUES ET LA LISTE DES PIéCES SONT CRITIQUES POUR LA SƒCURITƒ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIéCES SONY DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU DANS LES SUPPLƒMENTS PUBLIƒS PAR SONY. The following caution label is located inside of the unit. 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 radiation exposure.
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Ñ 3 Ñ MODEL IDENTIFICATION Ñ BACK PANEL Ñ 4-978- CDP-C250Z US Model : 490-7¹ CDP-C350Z US Model : 490-8¹ CDP-CE305 US Model : 490-0¹ Canadian Model : 490-1¹ AEP Model : 767-2¹ German Model : 490-3¹ Australian Model : 490-4¹ E Model : 490-5¹ Chinese Model : 490-6¹ CDP-CE405 US Model : 767-0¹ Canadian Model : 767-1¹ AEP, East Europian, Chinese Model : 767-2¹ UK Model : 767-4¹ German Model : 767-3¹ E Model : 767-6¹ Australian Model : 767-5¹ SAFETY CHECK-OUT (US model only) After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, ÒmetallizedÓ knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers). Leakage current can be measured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturersÕ instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The ÒlimitÓ indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) To Exposed Metal Parts on Set 0.15µF1.5kAC voltmeter (0.75V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. 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, observe from more than 30 cm away from the objective lens.