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TA-DX80 SERVICE MANUAL Ver 1.0 2001.03 E Model TA-DX80 is the amplifier section in MHC-DX80, MHC-VX888. SPECIFICATIONS The following measured at AC 120, 220, 240 V 50/60 Hz DIN power output (rated) 75 + 75 watts (6 ohms at 1 kHz, DIN) Continuous RMS power output (reference) 100 + 100 watts (6 ohms at 1 kHz, 10% THD) Inputs MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV, (phono jacks) impedance 47 kilohms MIC: sensitivity 1 mV, (phone jack) impedance 10 kilohms Outputs PHONES: accepts headphones of (stereo mini jack) 8 ohms or more FRONT SPEAKER: accepts impedance of 6 to 16 ohms SURROUND SPEAKER: accepts impedance of 6 ohms General Power requirements Mexican models: E91 models: Other models: 120 V AC, 60Hz 220 V AC, 50/60 Hz 120 V, 220 V or 230 ­ 240 V AC, 50/60Hz Adjustable with voltage selector 180 watts Approx. 150 Ч 360 Ч 343 mm Approx. 5.5 kg Power consumption Dimensions (w/h/d) Mass: Design and specifications are subject to change without notice. · Abbreviation E91: 220 V AC area in E model INTEGRATED STEREO AMPLIFIER 9-929-592-11 2001C0500-1 C 2001.3 Sony Corporation Audio Entertainment Group General Engineering Dept. TA-DX80 SECTION 1 SERVICING NOTE TABLE OF CONTENTS 1. 2. 3. 3-1. 3-2. 3-3. 3-4. MODEL IDENTIFICATION ­ REAR VIEW ­ SERVICING NOTE ... 2 GENERAL ... 3 DISASSEMBLY Disassembly Flow ... Case ... Front Panel Section ... MAIN Board ... 4 4 5 5 MODEL NO. TA-DX80 INTEGRATED STEREO AMPLIFIER 4. DIAGRAMS 5 6 7 8 9 4-1. Note for Printed Wiring Boards and Schematic Diagrams ... 4-2. Printed Wiring Board ­ MAIN Board ­ ... 4-3. Schematic Diagram ­ MAIN Board ­ ... 4-4. Printed Wiring Boards ­ INLET/PANEL/TRANS Boards ­ ... 4-5. Schematic Diagram ­ INLET/PANEL/TRANS Boards ­ ... Mexican model : AC: 120 V - 60 Hz 180 W E91 model : AC: 220 V - 50/60 Hz 180 W Other models : AC: 120/220/230 ­ 240 V - 50/60 Hz 180W · Abbreviation E91: 220 V AC area in E model 4. 5. EXPLODED VIEW ... 10 ELECTRICAL PARTS LIST ... 10 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. 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 P