Sony MDS-JE770 specifications Mechanism MDM-7A

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MDS-JE770

7-3. MECHANISM SECTION-1 (MDM-7A)

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319

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309

#2

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Ref. No.

Part No.

Description

Remarks

*301 4-996-267-01 BASE (BU-D)

3024-231-319-01 SCREW (2X6) CZN, +B (P) TRI

3034-227-007-01 GEAR (SB)

3044-227-025-01 BELT (LOADING)

3053-372-761-01 SCREW (M1.7), TAPPING

3064-227-002-01 GEAR, PULLEY

3074-226-999-01 LEVER (HEAD)

308X-4952-665-1 SPRING (SHT) ASSY, LEAF

309A-4672-990-F LOCK (HOLDER)

3104-229-533-01 SPRING (STOPPER), TORSION

Ref. No.

Part No.

Description

Remarks

3114-231-118-01 SPRING (HOLDER), TENSION

3124-227-019-02 PLATE (HOLDER) ASSY, RETAINER

3134-227-013-01 SPRING (EJ), TENSION

3144-226-995-01 SLIDER (EJ)

3154-226-996-01 LIMITTER (EJ)

3164-226-997-04 SLIDER

3174-226-998-01 LEVER (CHG)

3184-227-006-01 GEAR (SA)

319A-4735-075-A HOLDER ASSY

3204-226-994-01 GUIDE (L)

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Contents MDS-S50 Specifications873-890-11 MDM-7AMDS-JE770 Genera l Power requirementsSupplied accessories SELF-DIAGNOSIS FunctionItems of Error History Mode Items and Contents Diagrams Table of ContentsDisassembly Exploded ViewsMDS-JE770 Section Service Notes Flexible Circuit Board RepairingJIG for Checking BD Board Waveform IOPRecord Precedure KSN-260E Optical PICK-UP Block Type DiscriminationMain Board Component Side Checks Prior to Parts Replacement and AdjustmentsForced Reset Retry Cause Display Mode Bit BinaryHexadecimal Binary Bit When BinaryHigher Bits Lower Bits Hexa Details MDS-JE770 Section General Button DescriptionsMDS-JE770 Section Disassembly Disassembly FlowFront Panel Section Main Board Two screwsMechanism Deck Section MDM-7A Over Light Head HR901, BD BoardHolder Assy Loading Motor Assy M103Sled Motor Assy M102, Slider Optical PICK-UPSpindle Moter Assy M101 Setting the Test Mode MDS-JE770 Section Test ModePrecautions for USE of Test Mode Exiting the Test ModeSelecting the Test Mode Operating the Continuous Playback Mode MENU/NOError rate display Test Mode DisplaysMode display Functions of Other ButtonsAutomatic SELF-DIAGNOSIS Function When Memory NG is DisplayedMeanings of Other Displays InformationCheck before replacement MDS-JE770 Section Electrical AdjustmentsParts Replacement and Adjustment Adjustment flow Auto Gain Control Output LevelPrecautions for Adjustments Precautions for Checking Laser Diode EmissionPrecautions for USE of Optical PICK- UP KMS-260B/260E Temp AdjustUsing the Continuously Recorded Disc Checks Prior to RepairsTraverse Check Auto CheckOther Checks Traverse WaveformFocus Bias Check Play Check MO Error Rate CheckCD Error Rate Check Self-Recording/playback CheckLaser Power Adjustment Initial Setting of Adjustment ValueTemperature Compensation Offset Adjutment Traverse Adjustment Iop NV SaveFocus Bias Adjustment CD Auto Gain Control Output Level Adjustment Error Rate CheckAuto Gain Control Output Level Adjustment MO Auto Gain Control Output Level AdjustmentAdjusting Points and Connecting Points MDS-JE770 Section Diagrams Circuit Boards LocationBD Board For schematic diagramsFor printed wiring boards Main BoardIC190 Block Diagrams BD SectionIC171 IC1 2/2 Main SectionIC360 2/2 Optical Pick UP Block SemiconductorOVERSemiconductor Write HeadBoard Board Main Main Schematic Diagram Main /2 See page 51 for IC Block Diagrams Model is printed on diagram IC1KEY-SW Board Display BoardKB Board HP BoardSchematic Diagram Display Section LED DriveD910 RY910C951 C952 CN921 C924 LF900 C910Schematic Diagram Power Section MainIC Block Diagrams IC101 CXA2523AR BD BoardIC500 AK4524 Main Board Pin No Pin Name Description IC PIN Function DescriptionIC101 CXA2523AR RF Amplifier BD Board Pin No Pin Name Desription Asyi MvciAsyo AvddFrdr TfdrFfdr FS4Fldt IIC PowerADA.RESET FlckDINT1/H Clip ADA. LatchEPN ProtectBeep SW TimerSTB REC FlcsVFL1 ResetVDISP1 OSC0Section Exploded Views Chassis SectionFL750 1-517-987-11 Indicator TUBE, Fluorescent Not supplied Supplied with J790 FL750 With RV790Mechanism MDM-7A Motor ASSY, Sled HEAD, Over LightMotor ASSY, Spindle Motor ASSY, LoadingMDS-JE770 Section Electrical Parts List Jumper Resistor SwitchMetal Chip ShortMDS-JE770 Display HP KB KEY-SW KEY-SW Main MDS-JE770 Main 2SD2144S-TP-UVW Resistor MDS-JE770 Main PT VOL-SELMemo MDS-JE770 Revision History