Tektronix RTX130B, Service Manual

Page: 110 / 180

Maintenance
4-6
RTX130B QAM & VSB RF Signal Generator Service Manual
Cleaning Procedure — Interior.
To clean the RTX130B interior, perform 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 ethyl alcohol
and rinse with warm deionized water. (A cotton-tipped applicator is useful
for cleaning in narrow spaces and on circuit boards.)
STOP
. If, after performing steps 1 and 2, a module is clean upon inspection, skip
the remaining steps.
3. If steps 1 and 2 do not remove all the dust or dirt, the RTX130B may be
spray washed using a solution of ethyl alcohol by performing 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 ).
5. Spray wash dirty parts with the ethyl alcohol and wait 60 seconds for the
majority of the alcohol to evaporate.
6.
Use hot (120
_
F to 140
_
F) deionized water to thoroughly rinse them.
7. Dry all parts with low-pressure, deionized air.
8. Dry all components and assemblies in an oven or drying compartment using
low-temperature (125
_
F to 150
_
F) circulating air.
Lubrication.
There is no periodic lubrication required for the RTX130B.