User's Manual

43B
Service Information
1-4
1.5 Impaired Safety
Whenever it is likely that safety has been impaired, the instrument must be turned off and
disconnected from line power. The matter should then be referred to qualified
technicians. Safety is likely to be impaired if, for example, the instrument fails to perform
the intended measurements or shows visible damage.
1.6 General Safety Information
Warning
Removing the instrument covers or removing parts, except
those to which access can be gained by hand, is likely to
expose live parts and accessible terminals which can be
dangerous to life.
The instrument shall be disconnected from all voltage sources before it is opened.
Capacitors inside the instrument can hold their charge even if the instrument has been
separated from all voltage sources.
Components which are important for the safety of the instrument may only be replaced
by components obtained through your local FLUKE organization. These parts are
indicated with an asterisk (*) in the List of Replaceable Parts, Chapter 8.