Tektronix DPO3000 Series, Service Manual

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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 helps keep dust out of the oscilloscope and should normally be in
place when operating the oscilloscope.
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 fl at 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 fl at 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).
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.
WARNING.
To avoid injury, power down the instrument and disconnect it from
line voltage before performing any procedure that follows.
Exterior Cleaning
Clean the exterior surfaces and knobs of the instrument 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
case that may damage the case.
Clean the On/Standby switch using a dampened cleaning towel. Do not spray or
wet the switch directly.
4–2 MSO3000 and DPO3000 Series Digital Phosphor Oscilloscopes Service Manual