Sony MZ-R90/R91 Flexible Circuit Board Repairing, Notes on chip component replacement

Contents AEP Model US ModelCanadian Model UK ModelFlexible Circuit Board Repairing Notes on chip component replacementTABLE OF CONTENTS NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK LCX-2R SECTION SERVICING NOTENOTES ON LASER DIODE EMISSION CHECK OPTICAL PICK-UPFLEXIBLE BOARDSECTION 2 GENERAL Page Page SECTION DISASSEMBLY 3-3.LCD MODULE 3-4.MAIN BOARDover write head section 3-6.SERVICE ASSY, OP3-5.MD MECHANISM DECK MT-MZR70-165 3-7.HOLDER ASSY 3-8.MOTOR FLEXIBLE BOARD3-9.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 888xxxxxxxxxFREC1SHUF000M a n u a l 011 0 6 3 B 011 C 6 8 S011 0 F FJ 011 0 5 9 A000S 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 y000N - 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 History4-7.KEY CHECK MODE 021R e s O K ? SECTION ELECTRICAL ADJUSTMENTS021R e s N 021R e s763V r h V c l 762V c l P W M765V c h P W M 766V r h V c hC D R U N 014S e t T m p000 A s s y 341 C D O KConnection 043R e s u m e043R e s C l r Check MethodConnecting 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-R70MZ-R70 MZ-R70 IC302 IC501SN761056 NJM2173IC603 IC601MPC17A56FTA MPC18A21MTBAK4517-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 MAINMAIN MAIN MAIN MAIN Personal Audio Division Company Sony CorporationMZ-R70 Published by General Engineering DeptVer US Model Canadian Model AEP Model UK ModelE Model Australian Model Chinese Model Subject Taiwan model Addition