Sony KV-21SE43C, KV-20S90 service manual Troubleshooting

Page 80

Other Information

Other Information

Troubleshooting

If you are having a problem with your TV, try the suggestions below. If the problem persists, contact your nearest Sony dealer.

No picture, no	Make sure the power cord is plugged in.
sound	If a red light is flashing on the front of your TV for
	more than a few minutes, disconnect and reconnect
	the power cord to restore the TV. If the problem
	continues, call your local service center.
	Check the TV/VIDEO settings: when watching TV, set
	to TV; when watching video equipment, set to VIDEO
	(page 9).
	Check your PARENTAL CONTROL settings, (see
	pages 21-23).
	Make sure the batteries have been inserted correctly
	into the remote control.
	Try another channel, it could be station trouble.

Poor or no	Adjust PICTURE in the VIDEO menu (page 13).
picture, good	Adjust BRIGHTNESS in the VIDEO menu (page 13).
sound	Check the antenna and/or cable connections (page 3).
	Check the antenna and/or cable connections (page 3).

Good picture,	Press MUTING so that MUTING disappears from the
no sound	screen (page 9).
	Check your AUDIO settings. Your TV may be set to
	SAP (page 14).

No color	Adjust COLOR in the VIDEO menu (page 13).

Only snow	Check the CABLE setting in the CHANNEL SET UP
appears on the	menu (page 17).
screen	Check the antenna and/or cable connections (page 3).
	Make sure the channel selected is currently
	broadcasting.

Dotted lines or	Adjust the antenna.
stripes	Move the TV away from other electronic equipment.
	Some electronic equipment can create electrical noise,
	which can interfere with TV reception.

Double images	Check your outdoor antenna or call your cable service.
or ghosts

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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 DiagnosticRear Cover Removal DisassemblyChassis Assembly Removal Service Position Picture Tube Removal Anode CAP Removal ProcedureHOW to Handle AN Anode CAP Beam Landing SET-UP AdjustmentsAdjustment Procedure Convergenge Vertical Static ConvergenceDynamic Convergence Adjustment SCREEN-CORNER ConvergenceFocus Screen G2White Balance Adjustments Service Adjustment ModeService Adjustment Mode Memory Safety Related Adjustments HOLD-DOWN ReadjustmentB+ Voltage Confirmation and Adjustment Preparation Before ConfirmationDigital Power Multimeter Supply DigitalCircuit Adjustments Function Range Data Video Adjustment Items 1Data Initial Average ID MAP Adjustment Items 2Board Adjustments Frequency Adjustment 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 AttachmentsVentilation AccessoriesPower-Cord Protection Lightning Outdoor Antenna GroundingAntenna Grounding According to the NEC 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 cableRear of TV Connecting Additional EquipmentTV and VCR 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 MenuPress f to Press F to Using the Video menuTo access a menu 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 AgeNC-17 Rating Defined asPG-13 C8+ 14+18+ RatingInitial access into Parental Control Activating Parental LockRating TV will allow a maximum rating Setting the RatingUsing the Custom menu 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