Base Unit MBU-5A, BD Board | Sony MDS-JB920 specification

BASE UNIT (MBU-5A), BD BOARD

2 base unit (MBU-5A)

5 flexible board (CN104)

6 flexible board (CN101)

1 three screws

(P2.6 × 6)

3 Remove the solder (Five portion).

7 BD board

4screw (M1.7 × 4)

SW BOARD, LOADING MOTOR (M103)

1 screw (PTPWH M2.6 × 6)

2gear B

3 two screws (PWH1.7 × 4)

4 loading motor (M103)

6 SW board

5three screws (BTP2.6 × 6)

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Image 17

Sony MDS-JB920 service manual Base Unit MBU-5A, BD Board, SW BOARD, Loading Motor M103

Contents

MDM-5A SpecificationsMDS-JE520 General SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Section Servicing Notes Table of ContentsDiagrams Varoitus Flexible Circuit Board RepairingVarning IOP JIG for Checking BD Board Waveform Record Precedure REC/PLAY Checks Prior to Parts Replacement and AdjustmentsForced Reset Precedure Retry Cause Display Mode Hexadecimal nBinary Conversion Table Front view Rear view Section GeneralLocation of Controls Page Page Case Section Disassembly Main Board Front Panel Seciton Slider CAM Mechanism Section MDM-5A SW BOARD, Loading Motor M103 Base Unit MBU-5A, BD Board Precautions for USE of Test Mode Section Test ModeSetting the Test Mode Exiting the Test Mode Display Contents Mark Group Selecting the Test Mode MID Operating the Continuous Playback ModeNon-Volatile Memory Mode EEP Mode Functions of Other Buttons Test Mode DisplaysAuto gain display Not used in servicing Detrack check display Not used in servicing Meanings of Other Displays Display Contents When Lit When Off Parts Replacement and Adjustment Section Electrical Adjustments Precautions for USE of Optical PICK-UP KMS-260A Precautions for Checking Laser Diode EmissinonPrecautions for Adjustments Laser power meter Laser Power Check Temperature Compensation Offset CheckCheck Prior to Repairs Traverse Check CD Error Rate Check Play Checking MO Error Rate CheckFocus Bias Check Self-Recording/playback Check Temperature Compensation Offset Adjutment Initial Setting of Adjustment ValueLaser Power Adjustment Recording and Displaying the IOP Information Traverse Adjustment Focus Bias Adjustment Auto Gain Control Output Level Adjustment Error Rate CheckCD Auto Gain Control Output Level Adjustment MO Auto Gain Control Output Level Adjustment Adjusting Points and Connecting Points IC PIN Function Description Section DiagramsBD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMP Sens SrdtXrst Sqsy XWE XrasMvci Asyo Sfdr SrdrSprd Spfd Main Board IC100 CXD8607N A/D Converter VDD1 AvddlTEST2 Lvdd Main Board IC800 M30610MCA-264FP System Controller MDS-JB920 ∙ Signal Path Block Diagram Servo SectionREC Analog REC Digital Play Digital OUT Block Diagram Main Section∙ Signal Path Play Analog OUT Circuit Boards Location Printed Wiring Boards BD Section MDS-JB920 53 for Waveforms. See page 70 and 71 for IC Block Diagrams Schematic Diagram BD /2 See Waveforms BD board Main board Disp board MDS-JB920 MDS-JB920 MDS-JB920 MDS-JB920 Other layers pattern Side a US, CND Schematic Diagram Panel Section See page 54 for Waveforms Printed Wiring Board BD Switch Section Schematic Diagram BD Switch SectionIC Block Diagrams BD Board IC101 CXA2523AR IC152 BH6511FS-E2 IC121 CXD2654R IC101 CXA8054M Main Board IC100 CXD8607NIC203 CXA8042AS IC200 CXD8767N SN74HCU04ANS-E20 SN74HC153ANS Chassis Section Section Exploded Views Supplied with RV760 Front Panel Section 209 4-988-466-21 Spring ELECTROSTATIC, Leaf 206 201204 205 Base Unit Section MBU-5A Section Electrical Parts List Diode TANTAL. ChipDiode F1J6TP CXA2523AR Disp Main C252 Mylar HZ7.5CP-TK HZS6C1LCXA8042AS SN74HC153ANS 390 Coil with Core Vibrator Main PSWLED SEL6210S-TH10 Standby LED SEL6810A-TH10 Mega Control Transistor SW VOL Sony Corporation