Sony hcd md 313 service manual

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Ð 2 Ð TABLE OF CONTENTS SELF-DIAGNOSIS DISPLAY ......................................... 2 1. SERVICING NOTES ............................................... 3 2. GENERAL .................................................................... 5 3. DISASSEMBLY .......................................................... 8 4. TEST MODE .............................................................. 15 5. ELECTRICAL ADJUSTMENTS MD Section ...................................................................... 19 CD Section ....................................................................... 24 6. DIAGRAMS 6-1. Block Diagrams CD Section ....................................................................... 27 MD Section ...................................................................... 29 Main Section .................................................................... 31 6-2. Printed Wiring Board Ñ CD Section Ñ ......................... 33 6-3. Schematic Diagram Ñ CD Section Ñ ............................ 35 6-4. Printed Wiring Boards Ñ MD Section Ñ ....................... 39 6-5. Schematic Diagram Ñ MD Section Ñ ........................... 41 6-6. Schematic Diagram Ñ Main Section Ñ ......................... 46 6-7. Printed Wiring Boards Ñ Main Section Ñ ..................... 51 6-8. Printed Wiring Board Ñ Audio Section Ñ ..................... 53 6-9. Schematic Diagram Ñ Audio Section Ñ ........................ 55 6-10. Printed Wiring Boards Ñ Panel/Power Section Ñ ......... 58 6-11. Schematic Diagram Ñ Panel/Power Section Ñ ............. 61 6-12. IC Pin Function Description ............................................ 74 7. EXPLODED VIEWS ................................................ 82 8. ELECTRICAL PARTS LIST ................................ 88 Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range 87.5 Ð 108.0 MHz (50 kHz step) Aerial FM lead aerial Aerial terminals 75 ohms unbalanced Intermediate frequency 10.7 MHz AM tuner section Tuning range North American model: AM: 530 Ð 1,710 kHz (with the interval set at 10 kHz) 531 Ð 1,710 kHz (with the interval set at 9 kHz) European model: MW: 522 Ð 1,611 kHz (with the interval set at 9 kHz) LW: 144 Ð 288 kHz (with the interval set at 3 kHz) Other models: MW: 531Ð1,602 kHz (with the interval set at 9 kHz) 530 Ð 1,710 kHz (with the interval set at 10 kHz) SW: 5.95 Ð 17.90 MHz (with the interval set at 5 kHz) General Power requirements North American model: 120 V AC, 60 Hz European model: 220 Ð 230 V AC, 50/60 Hz Other models: 110 Ð 120 V or 220 Ð 240 V AC, 50/60 Hz Power consumption: North American model: 70 watts Other models: 80 watts Dimensions Amplifier/Tuner/MD/CD section: Approx. 215 ´ 150 ´ 320 mm (8 1/4 ´ 6 ´ 12 5/8 in) (w/h/d) incl. projecting parts and controls Mass Amplifier/Tuner/MD/CD section: Approx. 5.5 kg (12 lb 8 oz.) Supplied accessories: Remote RM-MD313 (1) AA (R6) batteries (2) AM loop aerial (1) FM lead aerial (1) Design and specifications are subject to change without notice. SELF-DIAGNOSIS DISPLAY

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Ð 3 Ð SECTION 1 SERVICING NOTES MODEL IDENTIFICATION Ñ BACK PANEL Ñ 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. 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 soldering iron around 270 ûC 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. CAUTION Use of controls or adjustments or performance of proce- dures other than those specified herein may result in haz- ardous radiation exposure. Laser component in this product is capable of emitting radiation exceding the limit for Class 1. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PROD- UCT MARKING is located on the rear exterior. This caution la- bel is located in- side the unit. PART No. MODEL PARTS No. AEP, UK, German, AED models4-993-849-1¹ Hong Kong, Malaysia, Singapore models4-993-849-2¹ Canadian model 4-993-849-3¹ Note: Be sure to connect all wires (including FFC) in the MD section before applying power or ICs may be damaged. ¥ Abbreviation AED: North European 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 COM- POSANTS QUE PAR DES PIéCES SONY DONT LES NUMƒROS SONT DONNƒS DANS CE MANUEL OU DANS LES SUPPLƒMENTS PUBLIƒS PAR SONY.