Tektronix 494AP O o o o, O a o, Do Not ServiceAlone, This Manual, As Markedon Equipment

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494A494APServiceVot.1

SERVICINGSAFETYSUMMARY

FORQUALIFIEDSERVICEPERSONNELONLY

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Do Not ServiceAlone

Do not performinternalserviceor adjustmentof this product unless anoth€r person capable of rendering firstaid andresuscitationis present.

Do Not Wear Jewelry

. Removejewelry prior to servicing. Rings,neck- laces,and other metallicobjectscould come into con_ tact with dangerousvoltagesandcurrents.

Use Gare When Servicing With power On

Dangerousvoltagesexist at several points in this product. To avoid personal injury, do not touch exposed connectionsand componentswhile power is on.

Djsconnect power before removing protective panels,soldering,or replacingcomponents.

Power Source

This product is intendedto operatefrom a power source that will not apply more than 250 volts rms betweenthe supplyconductorandground. A protective ground connectionby way of the groundingconductor in the powercord is essentialfor safeoperation.

X-Radiation

X-rayemissiongeneratedwithinthis instrumenthas been sufficientlyshielded. Do not modify or otherwis€ alterthe highvoltagecircuitryor the crt enclosure.

TERMS

In This Manual

CAUTION statements identify conditions or prac_ tices that could result in damage to the equipmentor other property.

WARNING statements identify conditions or prac_ tices that could result in personal injury or loss of liie.

As Markedon Equipment CAUTIONindicatesa personalinjuryhazardnot

imm€diately accessible as one reads the marking, or a hazard to property including the equipm€nt itself.

DANGER indicates a personal injury hazard immedi- atefy accessible as one reads the marking,

SYMBOLS

In This Manual

This symbol indacateswhere appticablecau- tionaryor otherinformationasto be tound.

As Markedon Equipment

t DANGER- Highvortage.

e Protectiveground(earth)terminal-

A ATTENTION- Referto manual.

o Referto manual.

Groundingthe Product

This productis groundedthroughthe grounding

conductorof the powercord. To avoidelectricalshock. plug the power cord into a properlywired receptacle beforeconnectingto the productinput or outputtermi- nals. A protectiveground conn€ctionby way of the groundingconductorin the power cord is essentialfor safeoperation.

Danger Arising From Loss of Ground

Upon loss of the protectivegroundconnection,all accessibleconductiveparts (includingknobs and con-

trols that may appearto be insulating)can renderan electricshock.

Use the Proper Power Cord

Use onlythe powercord and connectorspecifiedfor your product.

Useonlya powercordthat is in goodcondition.

For detailedinformationon power cords and con- nectorsseeSection1.

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