Technical data

148 4000 X-Series Oscilloscopes Service Guide
Safety Notices
If you energize this instrument by an auto transformer (for
voltage reduction or mains isolation), the common terminal
must be connected to the earth terminal of the power
source.
Whenever it is likely that the ground protection is impaired,
you must make the instrument inoperative and secure it
against any unintended operation.
Service instructions are for trained service personnel. To
avoid dangerous electric shock, do not perform any service
unless qualified to do so. Do not attempt internal service or
adjustment unless another person, capable of rendering first
aid and resuscitation, is present.
Do not install substitute parts or perform any unauthorized
modification to the instrument.
Capacitors inside the instrument may retain a charge even if
the instrument is disconnected from its source of supply.
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.
Do not use the instrument in a manner not specified by the
manufacturer.
To clean the instrument
If the instrument requires cleaning: (1) Remove power from
the instrument. (2) Clean the external surfaces of the
instrument with a soft cloth dampened with a mixture of
mild detergent and water. (3) Make sure that the instrument
is completely dry before reconnecting it to a power source.