Sony KV-20S90 Outdoor Antenna Grounding, Antenna Grounding According to the NEC, Lightning

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Grounding or Polarization

This set may be equipped with a polarized alternating current line plug (a plug having one blade wider than other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact you electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug.

Antennas

Outdoor Antenna Grounding

If an outdoor antenna is installed, follow the precautions below. An outdoor antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can come in contact with such power lines or circuits.

WHEN INSTALLING AN OUTDOOR ANTENNA SYSTEM, EXTREME CARE SHOULD BE TAKEN TO KEEP FROM CONTACTING SUCH POWER LINES OR CIRCUITS AS CONTACT WITH THEM IS ALMOST INVARIABLY FATAL.

Be sure the antenna system is grounded so as to provide some protection against voltage surges and built-up static charges. Section 810 of the National Electrical Code (NEC) in USA and Section 54 of the Canadian Electrical Code in Canada provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.

Antenna Grounding According to the NEC

Refer to section 54-300 of Canadian Electrical Code for Antenna Grounding.

	ANTENNA
	LEAD IN
	WIRE
GROUND
CLAMP
	ANTENNA
	DISCHARGE UNIT
	(NEC SECTION 810-20)
ELECTRIC
SERVICE	GROUNDING CONDUCTORS
EQUIPMENT	(NEC SECTION 810-21)
	GROUND CLAMPS
	POWER SERVICE GROUNDING
NEC - NATIONAL ELECTRIC CODE	ELECTRODE SYSTEM
NEC - NATIONAL ELECTRIC CODE	(NEC ARTICLE 250, PART H)

Lightning

For added protection for this television receiver during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna. This will prevent damage to the receiver due to lightning and power-line surges.

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Contents Trinitron Color Television Table of Contents Lbs SpecificationsSAFETY-RELATED Component Warning Leakage Test Safety CHECK-OUTSelf Diagnosis SELF-DIAGNOSTIC FunctionSelf Diagnostic Self-Diagnostic Screen DisplayDisassembly 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 Vertical Static Convergence ConvergengeScreen G2 Dynamic Convergence AdjustmentSCREEN-CORNER Convergence FocusService Adjustment Mode Service Adjustment Mode MemoryWhite Balance Adjustments Preparation Before Confirmation Safety Related AdjustmentsHOLD-DOWN Readjustment B+ Voltage Confirmation and AdjustmentDigital Digital Power Multimeter SupplyCircuit Adjustments Adjustment Items 1 Data Initial AverageFunction Range Data Video Adjustment Items 2 Board Adjustments Frequency AdjustmentID MAP SUB HUE, SUB Color Adjustment SHUE, Scol SUB Contrast Adjustment RdrvDisplay Position Adjustment Disp SUB Bright Adjustment SbrtLinearity VLIN, V. Correction Size Adjustment VsizCenter Adjustment Vpos Center Adjustment HposReference Information DiagramsPrinted Wiring Board and Schematic Diagram Information Circuit Boards LocationDY Assy Block Diagram and SchematicsINT Board Schematic DiagramREF. no Location Board Variant Model ListPIN Volt Board IC Block DiagramsBoard IC Voltage List IC521 NJM4558M-TE2Cvco Demod IC301 CXA2133BSCrystals Board Locator ListDiode TransistorKG KB G2 CRT RGB DRIVE, CRT Drive Semiconductors Chassis KV-20S90/21SE43C Exploded ViewsREF. no Electrical Parts ListCeramic Fuse ConnectorPhoto Coupler JackChip Conductor CoilMetal Chip Metal Varistor SwitchRelay TunerRemote Commander Accessories and Packaging2LA TX 1C 3LA TX NIL BA ADS LCS IRD CCV +EVIRD Trinitron Color TV Page Safety Precautions Notification Grounding or Polarization Important SafeguardsPower Sources For the set with a polarized AC power cord plugAttachments CleaningOverloading Object and Liquid EntryAccessories Power-Cord ProtectionVentilation Outdoor Antenna Grounding Antenna Grounding According to the NECLightning Servicing Damage Requiring ServiceReplacement Parts Safety CheckPage Contents Page Introduction Trinitron Color TV FeaturesAbout this Manual Batteries for the Remote ControlTV with indoor or outdoor antenna, or Catv cable Basic ConnectionsConnecting Additional Equipment TV and VCRRear of TV Cable Box Rear of TV TV and Cable BoxVCR TV, VCR, and Cable boxConnecting Headphones Connecting a CamcorderPage Button Description Using the Remote Control and Basic FunctionsIf you lost your remote control, see To perform Auto Setup again Setting Up the TV AutomaticallyMenu Quick Start to the MenusUsing the Video menu To access a menuPress f to Press F to KV-20S90 only Using the Audio menuON/OFF Timer Scheduled viewing Using the Timer menuFavorite Channel Quick access to favorite channels Using the SET UP menuCable Channel SET UP menuAge Using Parental ControlContents Defined as Overview of the RatingsRating Defined as PG-13NC-17 Rating C8+14+ 18+Activating Parental Lock Initial access into Parental ControlSetting the Rating Using the Custom menuRating TV will allow a maximum rating Information for Parents Resetting your passwordPage Troubleshooting Cable stations don’t seem to work Remote controlTo be cleaned Lost passwordFor all models except as noted SpecificationsPage Index TV Rating A. Ratings 20 Unrated Page Page Page Page Page Page To Print Tiled Version of Schematics NON-SCHEMATIC PagesSchematic Diagrams To Print Full Size Schematic DiagramsON-SCREEN Search Option Original Manual Issue Date 4/2001