OD1402 - Lesson 1/Learning Event 1
An inspection of the oscilloscope should be performed at least once
weekly. The following procedure is used:
o Inspect the cabinet for obvious damage, such as dents,
scratches, broken parts, frayed or otherwise damaged cables,
damaged indicators, etc.
o Inspect all switches for free movement, proper alignment with
cabinet markings, and operation.
o Inspect all moving controls for free movement, scratching,
etc., over their entire range of control.
Thorough cleaning of the surfaces of the oscilloscope should be
performed at least monthly. Make sure the oscilloscope is
unplugged from the power source before cleaning. The following
procedure is used:
o Use a cloth and brush to remove loose dirt and dust from
cabinet surfaces. Use the brush to remove dirt on and around the
front panel controls. Remove caked dirt with a cloth dampened in a
mild detergent and water. Wipe afterward with a cloth dampened in
o Clean the CRT plastic light filter, faceplate protector, and
the CRT face with a soft, lintfree cloth dampened in alcohol.
Do not use chemical cleaning agents containing solvents that might
damage the plastic parts in the oscilloscope. Avoid cleaning
agents that contain benzene, toluene, xylene, acetone, or similar
o Clean dust from the mesh filter that covers the blower fan by
holding the filter vertically and brushing with a softbristled
brush. Clean greasy residue or caked dirt from the mesh filter by
gently scrubbing with a soft brush and a mild detergent and water
solution. Rinse the filter in clean water and allow it to air dry.