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Sony MZ-R90/R91, MT-MZR70-165 Sony Corporation, MZ-R70, Personal Audio Division Company

Models: MT-MZR70-165 MZ-R90/R91

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Sony MZ-R90/R91 Sony Corporation, MZ-R70, Personal Audio Division Company, Published by General Engineering Dept

Contents

AEP Model US ModelCanadian Model UK Model Flexible Circuit Board Repairing Notes on chip component replacement TABLE OF CONTENTS NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK LCX-2R SECTION SERVICING NOTENOTES ON LASER DIODE EMISSION CHECK OPTICAL PICK-UPFLEXIBLE BOARD SECTION 2 GENERAL Page Page SECTION DISASSEMBLY 3-3.LCD MODULE 3-4.MAIN BOARD over write head section 3-6.SERVICE ASSY, OP3-5.MD MECHANISM DECK MT-MZR70-165 3-7.HOLDER ASSY 3-8.MOTOR FLEXIBLE BOARD 3-9.MOTOR, DC M602 3-10.“MOTOR, DC M601”, “MOTOR, DC M603” 4-2-1.Setting Method of Test Mode SECTION 4 TEST MODE4-2-2.Operation in Setting the Test Mode 888xxxxxxxxxFREC1SHUF 000M a n u a l 011 0 6 3 B 011 C 6 8 S011 0 F FJ 011 0 5 9 A 000S t a t 000A d r s 000B E m p 000# # # # # # 000P * * RE I B 000P * * R 000B O v r 000B f u l 000R t r y 000N - 1 000N - 1 000N - 2 000N - 2 000N 0001 s t0001 s t 0001 s t 0001 s t 000R # # # # Description of Error Indication Codes • Description of Indication History 4-7.KEY CHECK MODE 021R e s O K ? SECTION ELECTRICAL ADJUSTMENTS021R e s N 021R e s 763V r h V c l 762V c l P W M765V c h P W M 766V r h V c h C D R U N 014S e t T m p000 A s s y 341 C D O K Connection 043R e s u m e043R e s C l r Check Method Connecting Location SECTION DIAGRAMSMZ-R70 MZ-R70 Waveforms 6-3.BLOCK DIAGRAM - POWER SUPPLY SECTIONMZ-R70 Page Page Refer to page 41 for IC Block Diagrams MZ-R70 MZ-R70 MZ-R70 IC302 IC501SN761056 NJM2173 IC603 IC601MPC17A56FTA MPC18A21MTB AK4517-VQ-L IC901 MPC18A31FTAIC301 6-9.IC PIN DESCRIPTIONS MAIN BOARD IC502 CXD2660GA Page Page Page Page Page SECTION EXPLODED VIEWS Page SECTION ELECTRICAL PARTS LIST MAIN MAIN MAIN MAIN MAIN Personal Audio Division Company Sony CorporationMZ-R70 Published by General Engineering Dept Ver US Model Canadian Model AEP Model UK ModelE Model Australian Model Chinese Model Subject Taiwan model Addition