Sony RMT-V294A, LX70S, RMT-V293A, LX60S, LX40, LX50 service manual Tuner Block Diagram

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SLV-LX40/LX50/LX60S/LX70S

3-4. TUNER BLOCK DIAGRAM

LX40/LX50

3-7

3-8

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Contents Specifications RMT-V293A/V294ASafety CHECK-OUT Table of Contents Service NoteDisassembly Adjustments Block DiagramsService Note Error Code IndicationSetting up the remote commander HookupsHookup 1 VCR setup Hookup Antenna hookupCompleting A/V hookup HookupHookup 2 VCR setup Hookup Connecting a cable box with many scrambled channelsHookup 3 VCR setup Automatic clock settingSelecting a language Setting the clockUsing the Auto Clock Set feature Using Manual Clock Set If the clock does not activatePresetting/disabling channels manually Presetting channelsPresetting all receivable channels automatically Playing a tape If the picture is not clearRecording TV programs Recording TV programs using the Dial Timer To watch another TV program while recordingTo save a recording Before you startRecording TV programs using the timer About the Demonstration ModePlaying/searching at various speeds Locking the VCR Child LockTo resume normal playback To lock the VCRSetting the recording duration time Checking/changing/canceling timer settingsRecording stereo programs Recording bilingual programsSearching for the beginning of a timer recorded program Searching using the index functionSearching using the Time Search function How sound is recorded on a video tapePress H Play or x Stop To cancel skip-searchSearch forward while Showing the tape contents Fast-forward Adjusting the picture Adjusting the trackingChanging menu options About the Adaptive Picture Control APC functionHow to connect to record on this VCR Operation when recording on this VCREditing with another VCR Before you start editingGeneral setup information Index to parts and controlsDisplay window Rear panel11--19E SLV-LX40/LX50/LX60S/LX70S Section Disassembly CASE, Front Panel Block AssemblyRear Panel Mechansim Deck Bottom View Internal ViewsTop View Circuit Boards Location Overall Block Diagram Video Block Diagram SERVO/SYSTEM Control Block Diagram Tuner Block Diagram Audio Block Diagram Power Block Diagram TA a Xedit → Edit PB/XREC → PB/RECFrame Schematic Diagram VIDEO, AUDIO, SERVO/SYSTEM CONTROL, TUNER, Power See page 4-21 for waveforms MA-405 BOARD1/7 MA-405 REC/PB Head AMP Schematic DiagramREC/PB Head AMP Audio Processor VA Block MA-405 Y/C, Audio Processor Schematic DiagramAudio Process MA-405 SERVO/SYSTEM Control Schematic Diagram SERVO/SYSTEM Control SS BlockAudio Process AU Block MA-405 Audio Process Schematic DiagramSee page 4-5 for printed wiring board MA-405 BOARD4/7 MA-405 Tuner Schematic Diagram See page 4-5 for printed wiring boardTuner MA-405 BOARD5/7Display Control Front Block MA-405 Display Control Schematic DiagramSee page 4-5 for printed wiring board MA-405 BOARD6/7 Power Supply MA-405 Power Supply Schematic DiagramSee page 4-5 for printed wiring board MA-405 BOARD7/7 Power Supply PS BlockREC/PB Drum FGDrum PG OSD V OUTLine 2 Line 2FJ-32 Board DI-80 Board Dial TimerDial Timer Signal Pin No System Control Mechanism Block Interface MA-405 Board IC160System Control VIDEO/RP Block Interface MA-405 Board IC160 System Control Audio Block Interface MA-405 Board IC160Pin Name Function 55-4E Preparation Before Adjustment Mechanical AdjustmentsElectrical Adjustments Power Supply Check Input/Output Levels and ImpedanceVTR Audio System AdjustmentServo System Check ACE Head Adjustment Adjusting Parts Location Diagram VIDEO/AUDIO Line IN/OUTSW5V RF/HF SWPExploded Views Front Panel and Upper Case SectionChassis Section 5455721 711 720 713 725 724 714 719 715 717 718 Mechanism Deck707 708 712 706 702 701 709 704 710 705 722 703 Spring Power Tension Brake ASSY,MAINTRoller ASSY, Guide Spring803 802 833 Screw + P2.6 x 6 TYPE2 NON-SLITSwitch SWITCH, TactLX70SCL,CS Connector ResistorMA-405 Double LayerFilm CeramicMylar CONNECTOR, FFC/FPC 5P PIN, Connector 4PHOUSING, Connector 6P LX40/LX50 CONNECTOR, FFC/FPC 7PFILTER, Line Fluorescent Indicator Tube TUBE, Fluorescent IndicatorShort Jumper Selector Short CoilTransistor Transistor PT380F3Transistor 2SC1815GR-TPE2 Transistor 2SC2712Y-TE85LMetal Oxide SWITCH, Rotary Mode SWITCH, Tact 0REWSWITCH, Tact Ppause SWITCH, Tact ·PLAYRef. No Description Remarks Ref. No Sony Corporation Published by Quality Assurance Dept