SET-UP Adjustments, Beam Landing | Sony KV-21SE43C, KV-20S90

KV-20S90 / 21SE43C

SECTION 2: SET-UP ADJUSTMENTS

	The following adjustments should be made when a complete	Perform the adjustments in order as follows:
	realignment is required or a new picture tube is installed.	1.	Beam Landing
	These adjustments should be performed with rated power supply	2.	Convergence
		3.	Focus
	voltage unless otherwise noted.	4.	Screen (G2)
	Set the controls as follows unless otherwise noted:	5.	White Balance
	Set the controls as follows unless otherwise noted:	Note Test Equipment Required:
	VIDEO MODE: Standard	1.	Color Bar Pattern Generator
	PICTURE CONTROL: Normal	2.	Degausser
	BRIGHTNESS CONTROL: Normal	3.	DC Power Supply
		4.	Digital Multimeter

	2-1. BEAM LANDING	6. Switch over the raster signal to red and blue and conﬁ rm the
	2-1. BEAM LANDING	condition.
	Before beginning adjustment procedure:	7. When the position of the deﬂ ection yoke is determined, tighten it with
	Before beginning adjustment procedure:	the deﬂ ection yoke mounting screw.
	1. Degauss the entire screen.	the deﬂ ection yoke mounting screw.
	1. Degauss the entire screen.	8. If landing at the corner is not right, adjust by using the disk magnets.
	2. Feed in the white pattern signal.
	2. Feed in the white pattern signal.
	ADJUSTMENT PROCEDURE

1. Input a raster signal with the pattern generator.

2.Loosen the deﬂ ection yoke mounting screw, and set the purity control to the center as shown below:

Purity Control

	orDiskrotatablemagnetsdik		correctsPuritycontrolthisarea
	orDiskrotatablemagnetsdik		a	b
	db		correctstheseareas
3. Turn the raster signal of the pattern generator to green.	db			d
	thesemagnetsareascorrect(a-d)			d
4. Move the deﬂ ection yoke backward, and adjust with the purity control		Deflectionyokepositioning
so that green is in the center and red and blue are even on both		Deflectionyokepositioning			a
sides.				c	a
sides.
Blue Red
Blue Red
Green

5.Move the deﬂ ection yoke forward, and adjust so that the entire screen becomes green.

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Sony KV-21SE43C, KV-20S90 service manual SET-UP Adjustments, Beam Landing, Adjustment Procedure

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 Chassis 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 Convergence Focus Dynamic Convergence AdjustmentSCREEN-CORNER Convergence Screen G2 Service Adjustment Mode Memory Service Adjustment ModeWhite Balance Adjustments B+ Voltage Confirmation and Adjustment Safety Related AdjustmentsHOLD-DOWN Readjustment Preparation Before Confirmation Digital Power Multimeter Supply Digital Circuit Adjustments Data Initial Average Adjustment Items 1Function Range Data Video Board Adjustments Frequency Adjustment Adjustment Items 2ID MAP SUB Bright Adjustment Sbrt SUB Contrast Adjustment RdrvDisplay Position Adjustment Disp SUB HUE, SUB Color Adjustment SHUE, Scol Center Adjustment Hpos Size Adjustment VsizCenter Adjustment Vpos Linearity VLIN, V. Correction Circuit Boards Location DiagramsPrinted Wiring Board and Schematic Diagram Information Reference Information Block Diagram and Schematics DY Assy Board Schematic Diagram INT Board Variant Model List REF. no Location IC521 NJM4558M-TE2 Board IC Block DiagramsBoard IC Voltage List PIN Volt IC301 CXA2133BS Cvco Demod Transistor Board Locator ListDiode Crystals KG KB G2 CRT RGB DRIVE, CRT Drive Semiconductors Exploded Views Chassis KV-20S90/21SE43C Electrical Parts List REF. no Ceramic Connector Fuse Coil JackChip Conductor Photo Coupler Metal Chip Metal Tuner SwitchRelay 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 For the set with a polarized AC power cord plug Important SafeguardsPower Sources Grounding or Polarization Object and Liquid Entry CleaningOverloading Attachments Power-Cord Protection AccessoriesVentilation Antenna Grounding According to the NEC Outdoor Antenna GroundingLightning Safety Check Damage Requiring ServiceReplacement Parts 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 TV and VCR Connecting Additional EquipmentRear 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 To access a menu Using the Video 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 Overview of the Ratings Using Parental ControlContents Defined as Age PG-13 Rating Defined asNC-17 18+ C8+14+ Rating Initial access into Parental Control Activating Parental Lock Using the Custom menu Setting the RatingRating TV will allow a maximum rating Resetting your password Information for ParentsPage Troubleshooting Lost password Remote controlTo be cleaned 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 To Print Full Size Schematic Diagrams NON-SCHEMATIC PagesSchematic Diagrams To Print Tiled Version of Schematics ON-SCREEN Search Option Original Manual Issue Date 4/2001