Front Panel Seciton, Main Board | Sony MDS-JB920 manual

FRONT PANEL SECITON	1 connector
	1 connector
	(CN790)
4 claw

3five screws (BVTP3 × 8)

MAIN BOARD

1 connector (CN200)

3 two screws (BVTP3 × 8)

2wire (flat type) (23 core) (CN400)

4MAIN board

2wire (flat type) (21 core) (MAIN-DISP)

(CN800)

1 two connectors (CN801)

4 claw

5front panel section

2wire (flat type) (21 core) (MAIN-BD) (CN402)

2 wire (flat type) (21 core) (MAIN-DISP) (CN800)

1 connector (CN200)

3 three screws (BVTP3 × 8)

1 two connectors (CN100, 801)

3 seven screws (BVTP3 × 8)

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Image 15

Sony MDS-JB920 service manual Front Panel Seciton, Main Board

Contents

Specifications MDS-JE520MDM-5A General SELF-DIAGNOSIS Function Items of Error History Mode Items and Contents Table of Contents DiagramsSection Servicing Notes Flexible Circuit Board Repairing VarningVaroitus IOP JIG for Checking BD Board Waveform Record Precedure Checks Prior to Parts Replacement and Adjustments Forced ResetREC/PLAY Precedure Retry Cause Display Mode Hexadecimal nBinary Conversion Table Section General Location of ControlsFront view Rear view 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 Exiting the Test Mode Section Test ModePrecautions for USE of Test Mode Setting the Test Mode Display Contents Mark Group Selecting the Test Mode Operating the Continuous Playback Mode Non-Volatile Memory Mode EEP ModeMID Detrack check display Not used in servicing Test Mode DisplaysFunctions of Other Buttons Auto gain display Not used in servicing Meanings of Other Displays Display Contents When Lit When Off Parts Replacement and Adjustment Section Electrical Adjustments Laser power meter Precautions for Checking Laser Diode EmissinonPrecautions for USE of Optical PICK-UP KMS-260A Precautions for Adjustments Traverse Check Temperature Compensation Offset CheckLaser Power Check Check Prior to Repairs Self-Recording/playback Check Play Checking MO Error Rate CheckCD Error Rate Check Focus Bias Check Recording and Displaying the IOP Information Initial Setting of Adjustment ValueTemperature Compensation Offset Adjutment Laser Power Adjustment Traverse Adjustment Focus Bias Adjustment MO Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment CD Auto Gain Control Output Level Adjustment Adjusting Points and Connecting Points Section Diagrams BD Board IC101 CXA2523AR RF AMP, FOCUS/TRACKING Error AMPIC PIN Function Description Sqsy SrdtSens Xrst Asyo XrasXWE Mvci Spfd SrdrSfdr Sprd Main Board IC100 CXD8607N A/D Converter Lvdd AvddlVDD1 TEST2 Main Board IC800 M30610MCA-264FP System Controller MDS-JB920 REC Digital Block Diagram Servo Section∙ Signal Path REC Analog Block Diagram Main Section ∙ Signal Path Play Analog OUTPlay Digital 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 CXA2523AR Schematic Diagram BD Switch SectionPrinted Wiring Board BD Switch Section IC Block Diagrams BD Board IC101 IC152 BH6511FS-E2 IC121 CXD2654R CXA8042AS Main Board IC100 CXD8607NIC101 CXA8054M IC203 IC200 CXD8767N SN74HCU04ANS-E20 SN74HC153ANS Chassis Section Section Exploded Views Supplied with RV760 Front Panel Section 206 201 204 205209 4-988-466-21 Spring ELECTROSTATIC, Leaf Base Unit Section MBU-5A Section Electrical Parts List CXA2523AR TANTAL. ChipDiode Diode F1J6TP Disp Main C252 Mylar SN74HC153ANS HZS6C1LHZ7.5CP-TK CXA8042AS 390 LED SEL6810A-TH10 Mega Control Transistor Main PSWCoil with Core Vibrator LED SEL6210S-TH10 Standby SW VOL Sony Corporation