User's Manual

CHAPTER 3
OPERATOR’S MAINTENANCE
32. General
The following is a list of maintenance duties normally performed
by the operator of Test Set, Electron Tube TV–2(*)/U. These
procedures do not require special tools or test equipment.
a. Preventive maintenance (par. 33).
b. Visual inspection (par. 34).
c. Operational check (par. 35b).
d. Replacement of defective lamps (par. 39b).
e. Replacement of defective fuses (par. 39a).
f. Checking cable connection.
g. Replacement of defective electron tubes (pars. 36 and 37).
33. Preventive Maintenance
a. DA Form 11–266. DA Form 11–266 (figs. 6 and 7) is a
preventive maintenance checklist to be used by the operator.
Items not applicable to the tube tester are lined out in figure 7.
References in the ITEM block in figure 7 are to paragraphs that
contain additional maintenance information pertinent to the par-
ticular item. Instructions for the use of the form appear on the
form.
b. Items. The information shown below supplements DA Form
11-266. The item numbers correspond to the ITEM numbers on
the form.
Item
Maintenance procedures
1
3
5
Use a clean cloth to remove dust, dirt, moisture, and grease from
the case and front panel. If necessary, wet the cloth with
Cleaning Compound (Federal stock No. 7930–395-9542 ) and then
wipe the parts with a dry, clean cloth.
All control knobs should work smoothly, be tight on the shafts, and
should not bind. Tighten all loose knobs and be sure that the
knobs do not rub against the panel.
Repair any cuts in the power cord insulation by covering them with
rubber tape and then with friction tape.
Warning: Cleaning compound is flammable and its fumes are toxic. Do
not use near a flame; provide adequate ventilation.
38