Sony MZ-R90/R91, MT-MZR70-165 service manual MZ-R70, Refer to page 41 for IC Block Diagrams

Page 30

• Refer to page 41 for IC Block Diagrams.

MZ-R70

6-5. SCHEMATIC DIAGRAM — MAIN BOARD (1/3) — • Refer to page 30 for Waveforms.

• Refer to page 41 for IC Block Diagrams.

(Page 39)

(Page 38)

– 35 –

– 36 –

Image 30

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 BOARD3-6.SERVICE ASSY, OP 3-5.MD MECHANISM DECK MT-MZR70-165over write head section 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 DIAGRAMS MZ-R70SECTION MZ-R70 6-3.BLOCK DIAGRAM - POWER SUPPLY SECTION MZ-R70Waveforms Page Page Refer to page 41 for IC Block Diagrams MZ-R70MZ-R70 MZ-R70 IC302 IC501SN761056 NJM2173IC603 IC601MPC17A56FTA MPC18A21MTBIC901 MPC18A31FTA IC301AK4517-VQ-L 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