Dynamic Convergence Adjustment, Focus, Screen G2 | Sony KV-21SE43C

DYNAMIC CONVERGENCE ADJUSTMENT

Before performing this adjustment, perform Horizontal and Vertical Static Convergence Adjustment.

1.Slightly loosen deﬂ ection yoke screw.

2.Remove deﬂ ection yoke spacers.

3.Move the deﬂ ection yoke for best convergence as

shownRGBbelow:BGR

GRBBRGRBGRB

BGRRGB

RGBRBGRBRGB

4.Tighten the deﬂ ection yoke screw.

5.Install the deﬂ ection yoke spacers.

SCREEN-CORNER CONVERGENCE

1. Afﬁ x a permalloy assemblyb correspondinga toathe misconvergedbareas:

dcacmisconvergence-d:screen-cornrd

KV-20S90 / 21SE43C

2-3. FOCUS

1. Adjust FOCUS control for best pictures.

Focus (FV)

Screen (G2)

2-4. SCREEN (G2)

1.Input a dot pattern.

2.Set the PICTURE and BRIGHTNESS controls at minimum and COLOR control at normal.

3.Adjust SBRT, GCUT, BCUT in service mode with an oscilloscope as shown below so that voltages on the red, green, and blue cathodes are 170 ± 2 VDC.

170 ± 2 VDC pedestal

GND

4.Observe the screen and adjust SCREEN (G2) VR to obtain the faintly visible background of dot signal.

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Image 12

Sony KV-21SE43C, KV-20S90 service manual Dynamic Convergence Adjustment, SCREEN-CORNER Convergence, Focus, Screen G2

Contents

Trinitron Color Television Table of Contents Specifications Lbs SAFETY-RELATED Component Warning Safety CHECK-OUT Leakage Test SELF-DIAGNOSTIC Function Self Diagnosis Self-Diagnostic Screen Display Self Diagnostic Disassembly Chassis Assembly Removal Service PositionRear Cover Removal Anode CAP Removal Procedure HOW to Handle AN Anode CAPPicture Tube Removal SET-UP Adjustments Adjustment ProcedureBeam Landing Convergenge Vertical Static Convergence Dynamic Convergence Adjustment SCREEN-CORNER ConvergenceFocus Screen G2 Service Adjustment Mode Service Adjustment Mode MemoryWhite Balance Adjustments Safety Related Adjustments HOLD-DOWN ReadjustmentB+ Voltage Confirmation and Adjustment Preparation Before Confirmation Digital Power Multimeter Supply Digital Circuit Adjustments Adjustment Items 1 Data Initial AverageFunction Range Data Video Adjustment Items 2 Board Adjustments Frequency AdjustmentID MAP SUB Contrast Adjustment Rdrv Display Position Adjustment DispSUB Bright Adjustment Sbrt SUB HUE, SUB Color Adjustment SHUE, Scol Size Adjustment Vsiz Center Adjustment VposCenter Adjustment Hpos Linearity VLIN, V. Correction Diagrams Printed Wiring Board and Schematic Diagram InformationCircuit Boards Location Reference Information Block Diagram and Schematics DY Assy Board Schematic Diagram INT Board Variant Model List REF. no Location Board IC Block Diagrams Board IC Voltage ListIC521 NJM4558M-TE2 PIN Volt IC301 CXA2133BS Cvco Demod Board Locator List DiodeTransistor Crystals KG KB G2 CRT RGB DRIVE, CRT Drive Semiconductors Exploded Views Chassis KV-20S90/21SE43C Electrical Parts List REF. no Ceramic Connector Fuse Jack Chip ConductorCoil Photo Coupler Metal Chip Metal Switch RelayTuner Varistor Accessories and Packaging Remote Commander 2LA 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 Polarization Cleaning OverloadingObject and Liquid Entry Attachments Accessories Power-Cord ProtectionVentilation Outdoor Antenna Grounding Antenna Grounding According to the NECLightning Damage Requiring Service Replacement PartsSafety Check ServicingPage Contents Page Trinitron Color TV Features Introduction Batteries for the Remote Control About this Manual Basic Connections TV with indoor or outdoor antenna, or Catv cable Connecting Additional Equipment TV and VCRRear of TV TV and Cable Box Cable Box Rear of TV TV, VCR, and Cable box VCR Connecting a Camcorder Connecting HeadphonesPage Using the Remote Control and Basic Functions Button Description If you lost your remote control, see Setting Up the TV Automatically To perform Auto Setup again Quick Start to the Menus Menu Using the Video menu To access a menuPress f to Press F to Using the Audio menu KV-20S90 only Using the Timer menu ON/OFF Timer Scheduled viewing Using the SET UP menu Favorite Channel Quick access to favorite channels Channel SET UP menu Cable Using Parental Control Contents Defined asOverview of the Ratings Age Rating Defined as PG-13NC-17 C8+ 14+18+ Rating Initial access into Parental Control Activating Parental Lock Setting the Rating Using the Custom menuRating 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 work Specifications 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 Schematics ON-SCREEN Search Option Original Manual Issue Date 4/2001