PREVENTIVE MAINTENANCE
5 - 1
5 PREVENTIVE MAINTENANCE
5.1
GENERAL INFORMATION
This instrument normally requires no maintenance, since none of its components
is subject to wear.
However, to ensure reliable and trouble-free operation, the instrument should not
be exposed to moisture, heat, corrosive elements or excessive dust.
5.2
REMOVING THE BEZEL AND THE CONTRAST
FILTER
The bezel can be removed by pulling the upper rim away from the front panel. This
makes the contrast filter accessible for e.g. cleaning. The filter has open spaces
at the edges that allow to lift it from the screen with a small screwdriver.
When cleaning the filter, ensure that a soft cloth is used. The cloth must be free
from dust and abrasive particles in order to prevent scratches.
When installing the filter take care that the side facing the screen is the one that
has a small distance from the screen.
When installing the bezel take care that the grooves for text/softkey alignment are
on the right hand side.
5.3
CLEANING
Clean the oscilloscope with a damp cloth and a mild soap (remove all input
signals and disconnect the instrument line power). Do not use abrasives, solvents
or alcohol. These may damage the text on the instrument.
5.4
RECALIBRATION
From experience, it is expected that the instrument operates within its
specifications for a period of at least 2,000 hours, or for one year if used
infrequently. Recalibration must be carried out by qualified personnel only.