Agilent Technologies 4284A Service Manual page 13

Safety Summary
The following general safety precautions must be observed during all phases of operation,
service, and repair of this instrument. Failure to comply with these precautions or with specific
WARNINGS elsewhere in this manual may impair the protection provided by the equipment.
In addition it violates safety standards of design, manufacture, and intended use of the
instrument.
The Agilent Thchnologies assumes no liability for the customer's failure to comply with these
requirements.
Ground The Instrument
To avoid electric shock hazard, the instrument chassis and cabinet must be connected to a
safety earth ground by the supplied power cable with earth blade.
DO NOT Operate In An Explosive Atmosphere
Do not operate the instrument in the presence of flammable gasses or fumes. Operation of any
electrical instrument in such an environment constitutes a definite safety hazard.
Keep Aw a y From Live Circuits
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must be made by qualified maintenance personnel. Do not replace components
with the power cable connected. Under certain conditions, dangerous voltages may exist even
with the power cable removed. To avoid injuries, always disconnect power and discharge
circuits before touching them.
DO NOT Service Or Adjust Alone
Do not attempt internal service or adjustment unless another person, capable of rendering first
aid and resuscitation, is present.
DO NOT Substitute Parts Or Modify Instrument
Because of the danger of introducing additional hazards, do not install substitute parts or
perform unauthorized modifications to the instrument. Return the instrument to a Agilent
Technologies Sales and Service Office for service and repair to ensure that safety features are
maintained.
Dangerous Procedure Warnings
Warnings , such as the example below, precede potentially dangerous procedures throughout
this manual. Instructions contained in the warnings must be followed.
Wa r n i n g D a n g e r o u s voltages, capable of causing death, are present in this
instrument. Use extreme caution when handling, testing, and adjusting
this instrument.
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