Maintenance
Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual
4- 5
Cleaning Procedure — Interior.
To clean the oscilloscope interior, do the following
steps:
1.
Blow off dust with dry, low-pressure, deionized air (approximately 9 psi).
2.
Remove any remaining dust with a lint-free cloth dampened in isopropyl
alcohol (75% solution) and rinsed with warm deionized water. (A cotton-
tipped applicator is useful for cleaning in narrow spaces and on circuit
boards.)
STOP
. If, after doing steps 1 and 2, a module is clean upon inspection, skip the
following steps.
If there is still dust or dirt on the module, the oscilloscope may be spray washed
using a solution of 75% isopropyl alcohol by doing the following steps:
1.
Gain access to the parts to be cleaned by removing easily accessible shields
and panels (see
Removal Procedures
).
2.
Spray wash dirty parts with the isopropyl alcohol and wait 60 seconds for the
majority of the alcohol to evaporate.
3.
Use hot (120
_
F to 140
_
F) deionized water to thoroughly rinse them.
4.
Dry all parts with low-pressure, deionized air.
5.
Dry all components and assemblies in an oven or drying compartment using
low-temperature (125
_
F to 150
_
F) circulating air.
Summary of Contents for 4000 Series
Page 8: ...Service Safety Summary vi Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual ...
Page 13: ...Operating Information ...
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Page 16: ...Operating Information 1 2 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual ...
Page 17: ...Theory of Operation ...
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Page 22: ...Theory of Operation 2 4 Tektronix 4000 Series Digital Phosphor Oscilloscopes Service Manual ...
Page 23: ...Adjustment Procedures ...
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Page 37: ...Maintenance ...
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Page 55: ...Mechanical Parts List ...
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