Sony KV-21SE43C, KV-20S90 service manual SAFETY-RELATED Component Warning

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KV-20S90 / 21SE43C

WARNINGS AND CAUTIONS

CAUTION

Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield, or carbon painted on the CRT, after removing the anode.

WARNING!!

An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis. The chassis of this receiver is directly connected to the AC power line.

!SAFETY-RELATED COMPONENT WARNING!!

Components identiﬁ ed by shading and ! mark on the schematic diagrams, exploded views, and in the parts list are critical for safe operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in supplements published by Sony. Circuit adjustments that are critical for safe operation are identiﬁ ed in this manual. Follow these procedures whenever critical components are replaced or improper operation is suspected.

ATTENTION!!

Apres avoir deconnecte le cap de l’anode, court-circuiter l’anode du tube cathodique et celui de l’anode du cap au chassis metallique de l’appareil, ou la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.

Aﬁ n d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.

!ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!

Les composants identiﬁ es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance est critique pour la securite du fonctionnement sont identiﬁ es dans le present manuel. Suivre ces procedures lors de chaque remplacement de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

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Contents Trinitron Color Television Table of Contents Specifications LbsSAFETY-RELATED Component Warning Safety CHECK-OUT Leakage TestSELF-DIAGNOSTIC Function Self DiagnosisSelf-Diagnostic Screen Display Self DiagnosticChassis Assembly Removal Service Position DisassemblyRear Cover Removal HOW to Handle AN Anode CAP Anode CAP Removal ProcedurePicture Tube Removal Adjustment Procedure SET-UP AdjustmentsBeam Landing Convergenge Vertical Static ConvergenceDynamic Convergence Adjustment SCREEN-CORNER ConvergenceFocus Screen G2Service Adjustment Mode Memory Service Adjustment ModeWhite Balance Adjustments Safety Related Adjustments HOLD-DOWN ReadjustmentB+ Voltage Confirmation and Adjustment Preparation Before ConfirmationDigital Power Multimeter Supply DigitalCircuit Adjustments Data Initial Average Adjustment Items 1Function Range Data Video Board Adjustments Frequency Adjustment Adjustment Items 2ID MAP SUB Contrast Adjustment Rdrv Display Position Adjustment DispSUB Bright Adjustment Sbrt SUB HUE, SUB Color Adjustment SHUE, ScolSize Adjustment Vsiz Center Adjustment VposCenter Adjustment Hpos Linearity VLIN, V. CorrectionDiagrams Printed Wiring Board and Schematic Diagram InformationCircuit Boards Location Reference InformationBlock Diagram and Schematics DY AssyBoard Schematic Diagram INTBoard Variant Model List REF. no LocationBoard IC Block Diagrams Board IC Voltage ListIC521 NJM4558M-TE2 PIN VoltIC301 CXA2133BS Cvco DemodBoard Locator List DiodeTransistor CrystalsKG KB G2 CRT RGB DRIVE, CRT Drive Semiconductors Exploded Views Chassis KV-20S90/21SE43CElectrical Parts List REF. noCeramic Connector FuseJack Chip ConductorCoil Photo CouplerMetal Chip Metal Switch RelayTuner VaristorAccessories and Packaging Remote Commander2LA TX 1C 3LA TX NIL BA ADS LCS IRD CCV +EVIRD Trinitron Color TV Page Safety Precautions Notification Important Safeguards Power SourcesFor the set with a polarized AC power cord plug Grounding or PolarizationCleaning OverloadingObject and Liquid Entry AttachmentsPower-Cord Protection AccessoriesVentilation Antenna Grounding According to the NEC Outdoor Antenna GroundingLightning Damage Requiring Service Replacement PartsSafety Check ServicingPage Contents Page Trinitron Color TV Features IntroductionBatteries for the Remote Control About this ManualBasic Connections TV with indoor or outdoor antenna, or Catv cableTV and VCR Connecting Additional EquipmentRear of TV TV and Cable Box Cable Box Rear of TVTV, VCR, and Cable box VCRConnecting a Camcorder Connecting HeadphonesPage Using the Remote Control and Basic Functions Button DescriptionIf you lost your remote control, see Setting Up the TV Automatically To perform Auto Setup againQuick Start to the Menus MenuTo access a menu Using the Video menuPress f to Press F to Using the Audio menu KV-20S90 onlyUsing the Timer menu ON/OFF Timer Scheduled viewingUsing the SET UP menu Favorite Channel Quick access to favorite channelsChannel SET UP menu CableUsing Parental Control Contents Defined asOverview of the Ratings AgePG-13 Rating Defined asNC-17 C8+ 14+18+ RatingInitial access into Parental Control Activating Parental LockUsing the Custom menu Setting the RatingRating TV will allow a maximum rating Resetting your password Information for ParentsPage Troubleshooting Remote control To be cleanedLost password Cable stations don’t seem to workSpecifications For all models except as notedPage Index TV Rating A. Ratings 20 Unrated Page Page Page Page Page Page NON-SCHEMATIC Pages Schematic DiagramsTo Print Full Size Schematic Diagrams To Print Tiled Version of SchematicsON-SCREEN Search Option Original Manual Issue Date 4/2001