Tektronix WVR4000, Руководство по обслуживанию

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Maintenance
Inspection and Cleaning
Inspection and Cleaning describes how to inspect for dirt and damage. It also
describes how to clean the exterior and interior of the waveform rasterizer.
Inspection and cleaning are done as preventive maintenance. Preventive
maintenance, when done regularly, can prevent instrument malfunction and
enhance its reliability.
Preventive maintenance consists of visually inspecting and cleaning the
instrument and using general care when operating it.
How often maintenance should be performed depends on the severity of the
environment in which the instrument is used. A proper time to perform preventive
maintenance is just before any instrument adjustment.
General Care The cabinet helps keep dust out of the instrument and should normally be in place
during instrument operation.
WARNING. To prevent injury or loss of life, power down the instrument and
disconnect it from line voltage before performing any procedure that follows.
Interior Cleaning Use a dry, low-velocity stream of air to clean the interior of the chassis. Use a
soft-bristle, non-static-producing brush for cleaning around components. If you
must use a liquid for minor interior cleaning, use a 75% isopropyl alcohol solution
and rinse with deionized water.
Exterior Cleaning Clean the exterior surfaces of the chassis with a dry lint-free cloth or a soft-bristle
brush. If any dirt remains, use a cloth or swab dipped in a 75% isopropyl alcohol
solution. Use a swab to clean narrow spaces around controls and connectors. Do
not use abrasive compounds on any part of the instrument that may damaged by it.
CAUTION.
Avoid the use of chemical cleaning agents that might damage the
plastics used in the instrument. Use only deionized water when cleaning the
front-panel buttons. For the rest of the instrument, use a 75% isopropyl alcohol
solution as a cleaner and rinse with deionized water. Before using any other type
of cleaner, consult your Tektronix Service Center or representative.
Inspection – Exterior.
Inspect the outside of the instrument for damage, wear, and
missing parts, using the following table as a guide. Immediately repair defects
that could cause personal injury or lead to further damage to the instrument.
10 WVR4000 and WVR5000 Service Manual