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Sony MDS-SD1 service manual Forced Reset, Procedure, MAIN BOARD Component Side

Models: MDS-SD1

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FORCED RESET

The system microprocessor can be reset in the following procedure.

Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.

Procedure :

Short-circuit jumper wire of JW40 and JW41 (RESET).

[MAIN BOARD] (Component Side)

3 JW40

IC821 1

JW42

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Page 9

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Sony MDS-SD1 service manual Forced Reset, Procedure, MAIN BOARD Component Side

Contents

MDS-SD1 SPECIFICATIONSMINIDISC DECK AEP Model UK Model E ModelSELF-DIAGNOSISFUNCTION ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Table of Error CodesSelecting the Test Mode Flexible Circuit Board Repairing Notes on chip component replacementMODEL IDENTIFICATION - Specification Label ADVARSEL3. DISASSEMBLY TABLE OF CONTENTS6. DIAGRAMS 7. EXPLODED VIEWSJIG FOR CHECKING BD BOARD WAVEFORM SECTION SERVICING NOTEDisplay Precedure Record PrecedureCHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS FORCED RESET ProcedureMAIN BOARD Component Side FLUORESCENT INDICATOR TUBE AND MECHANISM DECK CLEANING OF OBJECTIVE LENS OF OPTICAL PICKUPProcedure ATTACHING THE GLASS ASSEMBLYSERVICING POSITION RETRY CAUSE DISPLAY MODE PrecedureReading the Display Hexadecimal nBinary Conversion Table Reading the DisplaySECTION GENERAL SECTION DISASSEMBLY 3-1.GLASS ASSY3-2.FRONT PANEL 3-4.BASE UNIT AND BD BOARD 3-3.SLIDER CAM3-5.SW BOARD AND LOADING MOTOR M103 4-2.SETTING THE TEST MODE 4-1.PRECAUTIONS FOR USE OF TEST MODESECTION TEST MODE 4-3.EXITING THE TEST MODE4-5.SELECTING THE TEST MODE 4-6.FUNCTIONS OF OTHER BUTTONS 4-5-1.Operating the Continuous Playback Mode4-5-3. Non-VolatileMemory Mode EEP MODE 4-7.TEST MODE DISPLAYS 2. Error rate display1. Mode display 3. Address display5-1.PARTS REPLACEMENT AND ADJUSTMENT SECTION ELECTRICAL ADJUSTMENTS5-5.CREATING CONTINUOUSLY RECORDED DISC 5-4.PRECAUTIONS FOR ADJUSTMENTSChecking Procedure 5-6-1.Temperature Compensation Offset Check5-6-2.Laser Power Check 5-6.CHECKS PRIOR TO REPAIRSCD Error Rate Check 5-6-5.C PLAY Checking MO Error Rate Check5-6-4.Focus Bias Check 5-6-6. Self-Recording/playbackCheck5-9.TEMPERATURE COMPENSATION OFFSET ADJUTMENT 5-7.INITIAL SETTING OF ADJUSTMENT VALUE5-10.LASER POWER ADJUSTMENT Setting ProcedureAdjusting Procedure 5-11.TRAVERSE ADJUSTMENTSpecified Value ConnectionAdjusting Procedure 5-12.FOCUS BIAS ADJUSTMENT5-15.AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT 5-13.ERROR RATE CHECK5-13-1.CD Error Rate Check 5-13-2.MO Error Rate Check5-15.ADJUSTING POINTS AND CONNECTING POINTS BD BOARD SIDE ABD BOARD SIDE B 6-1.CIRCUIT BOARDS LOCATION SECTION DIAGRAMSSIGNAL PATH 6-2.BLOCK DIAGRAMS - BD SECTIONMDS-SD1 PB Digital outMAIN SECTION PagePBDigital out RECDigital inBD 1/2 SECTION WAVEFORMS - BD 1/2 SECTIONDISPLAY SECTION MDS-SD1See page 32 for Circuit Boards Location 6-3.PRINTED WIRING BOARD - BD SECTIONSemiconductor Location MDS-SD1See page 61 for IC Block Diagrams 6-4.SCHEMATIC DIAGRAM - BD 1/2 SECTIONSee page 38 for Waveforms See page 64 for IC Pin FunctionsSee page 39 for Printed Wiring Board 6-5.SCHEMATIC DIAGRAM - BD 2/2 SECTIONMDS-SD1 PageSee page 49 for Printed Wiring Board 6-6.SCHEMATIC DIAGRAM - MAIN 1/2 SECTIONPage Page Page Page PageSee page 62 for IC Block Diagrams 6-7.SCHEMATIC DIAGRAM - MAIN 2/2 SECTIONMDS-SD1 PageMDS-SD1 6-8.PRINTED WIRING BOARD - MAIN SECTIONPage PageSee page 38 for Waveforms 6-9.SCHEMATIC DIAGRAM - PANEL SECTIONMDS-SD1 PageMDS-SD1 6-10.PRINTED WIRING BOARD - PANEL SECTIONPage See page 32 for Circuit Boards LocationSee page 63 for IC Block Diagrams 6-11.SCHEMATIC DIAGRAM - CONNECTOR SECTIONMDS-SD1 PageMDS-SD1 6-12.PRINTED WIRING BOARD - CONNECTOR SECTIONPage See page 32 for Circuit Boards Location6-14.PRINTED WIRING BOARD - BD SWITCH SECTION 6-13.SCHEMATIC DIAGRAM - BD SWITCH SECTION6-15.SCHEMATIC DIAGRAM - ENCODER SECTION 6-16.PRINTED WIRING BOARD - ENCODER SECTIONBD Section 6-17.IC BLOCK DIAGRAMSIC101 CXA2523ARBH6511FS-E2 IC152MAIN Section IC201IC822 CONNECTOR SectionM62016FP-E1 IC851IC101 CXA2523AR RF Amplifier BD Board 6-18.IC PIN FUNCTIONSPage Page 7-1.CASE AND BACK PANEL SECTION SECTION EXPLODED VIEWS7-2.FRONT PANEL SECTION 7-3.MECHANISM DECK SECTION MDM-5A 254 7-4.BASE UNIT SECTION MBU-5A252 251SECTION ELECTRICAL PARTS LIST CONNECTOR CONNECTOR ENCODER MAIN MAIN MAIN PANEL SW PANELPage Sony Corporation MDS-SD1Home A&V Products Company Shibaura