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

Page 8

SECTION 3

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

Set Block Assy, Bottom Panel Block Assy, Upper LCD Module

Main Board MD Mechanism Deck Service Assy, OP Holder Assy

Motor Flexible Board

Motor, DC (M602)

“Motor, DC (M601)”, “Motor, DC (M603)”

Note : Follow the disassembly procedure in the numerical order given.

3-1. BLOCK ASSY, BOTTOM

Note : When installing, fit the knobs (HOLD, SYNCHRO REC) and switches (S804, S807)

S804

S807

knob (HOLD)

knob (SYNCHRO REC) 3 screws (1.4)

6 block assy, bottom

hinge

4 screws (1.4)

1 lid, battery case

lid, battery case

block assy, bottom

Note:When installing the bottom block assy, install the assy with the battery case lid open. After it is installed, close the battery case lid.

3-2. PANEL BLOCK ASSY, UPPER

6 panel block assy, upper

4screws (1.4)

1 CN801

5 screws (1.4)

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Image 8

Contents US Model Canadian ModelAEP Model UK ModelFlexible Circuit Board Repairing Notes on chip component replacementTABLE OF CONTENTS SECTION SERVICING NOTE NOTES ON LASER DIODE EMISSION CHECKNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK LCX-2R 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”SECTION 4 TEST MODE 4-2-2.Operation in Setting the Test Mode4-2-1.Setting Method of Test Mode 888xxxxxxxxxFREC1SHUF000M a n u a l 011 C 6 8 S 011 0 F FJ011 0 6 3 B 011 0 5 9 A000P * * R E I B000S t a t 000A d r s 000B E m p 000# # # # # # 000P * * R 000B O v r 000B f u l 000R t r y0001 s t 0001 s t 0001 s t 0001 s t000N - 1 000N - 1 000N - 2 000N - 2 000N 000R # # # #Description of Error Indication Codes • Description of Indication History4-7.KEY CHECK MODE SECTION ELECTRICAL ADJUSTMENTS 021R e s N021R e s O K ? 021R e s762V c l P W M 765V c h P W M763V r h V c l 766V r h V c h014S e t T m p 000 A s s yC D R U N 341 C D O K043R e s u m e 043R e s C l rConnection 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 IC501 SN761056IC302 NJM2173IC601 MPC17A56FTAIC603 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 Sony Corporation MZ-R70Personal Audio Division Company Published by General Engineering DeptUS Model Canadian Model AEP Model UK Model E Model Australian Model Chinese ModelVer Subject Taiwan model Addition