Maintenance
How often you do
maintenance depends on the severity of the environment in
which the oscilloscope is used. A proper time to perform preventive maintenance
is just before oscilloscope adjustment.
General Care
The cabinet h
elps keep dust out of the oscilloscope and should normally be in
place when operating the oscilloscope.
WARNING. To avoid injury, power off the instrument and disconnect it from line
voltage before performing any procedure that follows.
Flat Panel Display Cleaning
The display is a soft plastic display and must be treated with care during cleaning.
CAUTION.
Improper cleaning agents or methods can damage the flat panel
display.
Avoid using abrasive cleaners or commercial glass cleaners to clean the display
surface.
Avoid spraying liquids directly on the display surface.
Avoid scrubbing the display with excessive force.
Clean
the flat panel display surface by gently rubbing the display with a
clean-room wipe (such as Wypall Medium Duty Wipes, #05701, available from
Kimberly-Clark Corporation).
If the display is very dirty, moisten the wipe with distilled water or a 75%
isopropyl alcohol solution and gently rub the display surface. Avoid using excess
force or you may damage the plastic display surface.
Exterior Cleaning
CAUTION. To prevent getting moisture inside the oscilloscope during external
cl
eaning, use only enough liquid to dampen the cloth or applicator.
Clean the exterior surfaces of the chassis with a dry lint-free cloth or a soft-bristle
b
rush. If any dirt remains, use a cloth or swab dipped in a 75% isopropyl alcohol
solution. Use a swab to clean na rrow spaces around controls and connectors. Do
not use abrasive compounds on any part of the chassis that might damage the
chassis.
20 MSO4000B and DPO4000B Series Digital Phosphor Oscilloscopes Service Manual
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