Tektronix 442 Service Manual page 8

OPERATORS SAFETY SUMMARY
The general safety information in this part of the summary
is for both operating and servicing personnel. Specific
warnings and cautions will be found throughout the
manual where they apply, but may not appear in this
summary.
Terms In This Manual
CAUTION statements identify conditions or practices that
could result in damageto the equipment or other property.
WARNING statements identify conditions or practices
that could result in personal injury or loss of life.
Terms As Marked on Equipment
CAUTION indicates a personal injury hazard not im-
mediately accessible as one reads the marking, or a
hazard to property including the equipment itself.
DANGER indicates a personal injury hazard immediately
accessible as one reads the marking.
Symbols In This Manual
This symbol indicates where applicable
cautionary or other information is to be
found.
Symbols As Marked on Equipment
4 DANGER — High voltage.
Protective ground (earth) terminal.
A ATTENTION — refer to manual,
Power Source
This product is intended to operate from a power source
that will not apply more than 250 volts rms between the
supply conductors or between either supply conductor
and ground. A protective ground connection by way of the
grounding conductor in the power cord is essential for
safe operation.
REV A MAY 1980
Grounding the Product
This product is grounded through the grounding conduc-
tor of the power cord. To avoid electrical shock, plug the
power cord into a properly wired receptacle before
connecting to the product input or output terminals. A
protective ground connection by way of the grounding
conductor in the power cord is essential for safe opera-
tion.
Danger Arising From Loss of Ground
Upon loss of the protective-ground connection, all
accessible conductive parts (including knobs and con-
trols that may appear to be insulating) can render an
electric shock.
Use the Proper Power Cord
Use only the power cord and connector specified for your
product.
Use only a power cord that is in good condition.
For detailed information on power cords and connectors,
see Operating Instructions section.
Refer cord and connector changes to qualified service
personnel.
Use the Proper Fuse
To avoid fire hazard, use only the fuse of correct type,
voltage rating and current rating as specified in the parts
list for your product.
Refer fuse replacement to qualified service personnel.
Do Not Operate in Explosive Atmospheres
To avoid explosion, do not operate this product in an
explosive atmosphere unless it has been specifically
certified for such operation.
Do Not Remove Covers or Panels
To avoid personal injury, do not remove the product
covers or panels. Do not operate the product without the
covers and panels properly installed.