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TAS 455 and TAS 465 Service Manual
6Ć5
Inspection and Cleaning
Inspection and Cleaning describes how to inspect and clean the TAS 455
and TAS 465 Analog Oscilloscopes. Inspection and cleaning are preventive
maintenance. Preventive maintenance, when done regularly, may prevent
oscilloscope malfunction and enhance its reliability.
Preventive maintenance consists of visually inspecting and cleaning the
oscilloscope and using general care when operating it.
How often to do maintenance depends on the severity of the environment in
which you use the oscilloscope. A proper time to perform preventive mainteĆ
nance is just before oscilloscope adjustment.
The cabinet helps keep dust out of the oscilloscope and it is a major compoĆ
nent of its cooling system. It should normally be in place when operating the
oscilloscope. The oscilloscope front cover protects the front panel and
display from dust and damage. Install it when storing or transporting the
oscilloscope.
Inspect and clean the oscilloscope as often as operating conditions require.
The collection of dirt on components inside can cause them to overheat and
breakdown. (Dirt acts as an insulating blanket, preventing efficient heat
dissipation.) Dirt also provides an electrical conduction path that could cause
an oscilloscope failure, especially under highĆhumidity conditions.
CAUTION
Avoid the use of chemical cleaning agents that might damage the
plastics used in this oscilloscope. Use a 75% isopropyl alcohol
solution as a cleaner and rinse with deionized water. Use only
deionized water when cleaning the menu buttons or frontĆpanel
buttons. Before using any other type of cleaner, consult your TektroĆ
nix Service Center or representative.
Avoid the use of high pressure compressed air when cleaning dust
from the interior of this instrument. (High pressure air can cause
ESD.) Instead, use low pressure compressed air (about 9 psi).
General Care
Inspection and
Cleaning Procedures