Maintenance
TDS 420A, TDS 430A & TDS 460A Service Manual
6-7
3. If steps 1 and 2 do not remove all the dust or dirt, the oscilloscope may be
spray washed using a solution of 75% isopropyl alcohol by doing steps 4
through 8.
4. Gain access to the parts to be cleaned by removing easily accessible shields
and panels (see Removal and Installation Procedures on page 6--9).
5. Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the
majority of the alcohol to evaporate.
6. Use 49_ to 60_ C (120_ to 140_ F) deionized water to thoroughly rinse
the parts.
7. Dry all parts with low-pressure, deionized air.
8. Dry all components and assemblies in an oven or drying compartment using
52_ to 65_ C (125_ to 150_ F) circulating air.
Lubrication. There is no periodic lubrication required for this oscilloscope.
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