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Sony MT-MZR70-165, MZ-R90/R91 service manual MZ-R70

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

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MZ-R70

6-6. SCHEMATIC DIAGRAM — MAIN BOARD (2/3) — • Refer to page 42, 43 for IC Block Diagrams.

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Sony MT-MZR70-165, MZ-R90/R91 service manual MZ-R70

Contents

UK Model US ModelCanadian Model AEP ModelNotes on chip component replacement Flexible Circuit Board RepairingTABLE OF CONTENTS OPTICAL PICK-UPFLEXIBLE BOARD SECTION SERVICING NOTENOTES ON LASER DIODE EMISSION CHECK NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK LCX-2RSECTION 2 GENERAL Page Page SECTION DISASSEMBLY 3-4.MAIN BOARD 3-3.LCD MODULE3-5.MD MECHANISM DECK MT-MZR70-165 3-6.SERVICE ASSY, OPover write head section 3-8.MOTOR FLEXIBLE BOARD 3-7.HOLDER ASSY3-10.“MOTOR, DC M601”, “MOTOR, DC M603” 3-9.MOTOR, DC M602888xxxxxxxxxFREC1SHUF SECTION 4 TEST MODE4-2-2.Operation in Setting the Test Mode 4-2-1.Setting Method of Test Mode000M a n u a l 011 0 5 9 A 011 C 6 8 S011 0 F FJ 011 0 6 3 B000P * * R 000B O v r 000B f u l 000R t r y 000P * * RE I B 000S t a t 000A d r s 000B E m p 000# # # # # #000R # # # # 0001 s t0001 s t 0001 s t 0001 s t 000N - 1 000N - 1 000N - 2 000N - 2 000N• Description of Indication History Description of Error Indication Codes4-7.KEY CHECK MODE 021R e s SECTION ELECTRICAL ADJUSTMENTS021R e s N 021R e s O K ?766V r h V c h 762V c l P W M765V c h P W M 763V r h V c l341 C D O K 014S e t T m p000 A s s y C D R U NCheck Method 043R e s u m e043R e s C l r ConnectionConnecting Location MZ-R70 DIAGRAMSSECTION MZ-R70 MZ-R70 6-3.BLOCK DIAGRAM - POWER SUPPLY SECTIONWaveforms Page Page MZ-R70 Refer to page 41 for IC Block DiagramsMZ-R70 MZ-R70 NJM2173 IC501SN761056 IC302MPC18A21MTB IC601MPC17A56FTA IC603IC301 IC901 MPC18A31FTAAK4517-VQ-L 6-9.IC PIN DESCRIPTIONS MAIN BOARD IC502 CXD2660GA Page Page Page Page Page SECTION EXPLODED VIEWS Page MAIN SECTION ELECTRICAL PARTS LISTMAIN MAIN MAIN MAIN Published by General Engineering Dept Sony CorporationMZ-R70 Personal Audio Division CompanySubject Taiwan model Addition US Model Canadian Model AEP Model UK ModelE Model Australian Model Chinese Model Ver