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Sony RMT-V293A, LX70S, RMT-V294A, LX60S, LX40, LX50 service manual SERVO/SYSTEM Control Block Diagram

Models: LX50 RMT-V294A LX40 LX60S RMT-V293A LX70S

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SLV-LX40/LX50/LX60S/LX70S

3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM

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Sony RMT-V293A, LX70S, RMT-V294A, LX60S, LX40, LX50 service manual SERVO/SYSTEM Control Block Diagram

Contents

RMT-V293A/V294A SpecificationsSafety CHECK-OUT Block Diagrams Table of ContentsService Note Disassembly AdjustmentsError Code Indication Service NoteHookups Setting up the remote commanderHookup Hookup 1 VCR setupHookup Antenna hookup Completing A/V hookupAutomatic clock setting Hookup 2 VCR setupHookup Connecting a cable box with many scrambled channels Hookup 3 VCR setupUsing the Auto Clock Set feature Setting the clockSelecting a language If the clock does not activate Using Manual Clock SetPresetting all receivable channels automatically Presetting channelsPresetting/disabling channels manually If the picture is not clear Playing a tapeRecording TV programs Before you start Recording TV programs using the Dial TimerTo watch another TV program while recording To save a recordingAbout the Demonstration Mode Recording TV programs using the timerTo lock the VCR Playing/searching at various speedsLocking the VCR Child Lock To resume normal playbackRecording bilingual programs Setting the recording duration timeChecking/changing/canceling timer settings Recording stereo programsHow sound is recorded on a video tape Searching for the beginning of a timer recorded programSearching using the index function Searching using the Time Search functionSearch forward while Showing the tape contents Fast-forward To cancel skip-searchPress H Play or x Stop About the Adaptive Picture Control APC function Adjusting the pictureAdjusting the tracking Changing menu optionsBefore you start editing How to connect to record on this VCROperation when recording on this VCR Editing with another VCRIndex to parts and controls General setup informationRear panel Display window11--19E CASE, Front Panel Block Assembly SLV-LX40/LX50/LX60S/LX70S Section DisassemblyRear Panel Mechansim Deck Top View Internal ViewsBottom View Circuit Boards Location Overall Block Diagram Video Block Diagram SERVO/SYSTEM Control Block Diagram Tuner Block Diagram Audio Block Diagram Power Block Diagram Xedit → Edit PB/XREC → PB/REC TA aFrame Schematic Diagram VIDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, Power REC/PB Head AMP MA-405 REC/PB Head AMP Schematic DiagramSee page 4-21 for waveforms MA-405 BOARD1/7 Audio Process MA-405 Y/C, Audio Processor Schematic DiagramAudio Processor VA Block SERVO/SYSTEM Control SS Block MA-405 SERVO/SYSTEM Control Schematic DiagramSee page 4-5 for printed wiring board MA-405 BOARD4/7 MA-405 Audio Process Schematic DiagramAudio Process AU Block MA-405 BOARD5/7 MA-405 Tuner Schematic DiagramSee page 4-5 for printed wiring board TunerSee page 4-5 for printed wiring board MA-405 BOARD6/7 MA-405 Display Control Schematic DiagramDisplay Control Front Block Power Supply PS Block Power SupplyMA-405 Power Supply Schematic Diagram See page 4-5 for printed wiring board MA-405 BOARD7/7OSD V OUT REC/PBDrum FG Drum PGFJ-32 Board Line 2Line 2 Dial Timer Dial TimerDI-80 Board System Control Mechanism Block Interface MA-405 Board IC160 Signal Pin NoSystem Control Audio Block Interface MA-405 Board IC160 System Control VIDEO/RP Block Interface MA-405 Board IC160Pin Name Function 55-4E Electrical Adjustments Mechanical AdjustmentsPreparation Before Adjustment Input/Output Levels and Impedance Power Supply CheckServo System Check Audio System AdjustmentVTR ACE Head Adjustment RF/HF SWP Adjusting Parts Location DiagramVIDEO/AUDIO Line IN/OUT SW5VFront Panel and Upper Case Section Exploded Views5455 Chassis Section707 708 712 706 702 701 709 704 710 705 722 703 Mechanism Deck721 711 720 713 725 724 714 719 715 717 718 Spring Spring Power TensionBrake ASSY,MAINT Roller ASSY, GuideScrew + P2.6 x 6 TYPE2 NON-SLIT 803 802 833Resistor SwitchSWITCH, Tact LX70SCL,CS ConnectorDouble Layer MA-405Mylar CeramicFilm CONNECTOR, FFC/FPC 7P CONNECTOR, FFC/FPC 5PPIN, Connector 4P HOUSING, Connector 6P LX40/LX50Short Coil FILTER, Line Fluorescent Indicator TubeTUBE, Fluorescent Indicator Short Jumper SelectorTransistor 2SC2712Y-TE85L TransistorTransistor PT380F3 Transistor 2SC1815GR-TPE2Metal Oxide SWITCH, Tact ·PLAY SWITCH, Rotary ModeSWITCH, Tact 0REW SWITCH, Tact PpauseRef. No Description Remarks Ref. No Published by Quality Assurance Dept Sony Corporation