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 TM 11-6625-467-12
fuses. Replace burned-out indicator lamps or fuses
WARNING
Adequate ventilation should be provided
b. If the checks in a above do not locate the
while using TRICHLOROTRIFLUORO-
trouble, perform the applicable procedures in the
ETHANE. Prolonged breathing of vapor
troubleshooting chart, table 4-2.
should be avoided. The solvent should not
be used near heat or open flame the
4-8. Repairs
products of decomposition are toxic and
i r r i t a t i n g . S i n c e TRICHLOROTRI-
a. Replacement of Indicator Lamps.
FLUORETHANE dissolves natural oils
(1) Rotate the indicator jewel counterclockwise
prolonged contact with skin should be
and remove it from the indicator light assembly.
avoided When neccessary, use gloves
(2) Press in on the lamp and rotate it coun-
which the solvent cannot penetrate. If the
terclockwise to unlock it.
solvent is taken internally, consult a
(3) Remove the defective lamp.
physician immediately.
(4) Replace the defective lamp with a new one of
b. Remove grease, fungus, and ground-in dirt
identical rating, push in on the new lamp and rotate
from the cabinet and cover; use a cloth dampened
it clockwise to lock it in place.
(not wet) with trichlorotrifluoroethane.
(5) Replace the indicator jewel.
c. Remove dust or dirt from plugs and jacks with
b. Replacement of Knobs.
a brush
(1) Set the control switch to its extreme
CAUTION
counterclockwise position or to a known reference.
(2) Loosen the setscrews on the defective knob
Do not press on the meter face (glass)
and remove the knob from its shaft.
when cleaning the meter may become
damaged.
CAUTION
d. Clean the front panel meter and control knobs;
Do not overtighten the setscrews or the
use a soft clean cloth. If dirt is difficult to remove,
knobs may split.
dampen the cloth with water; use mild soap if
(3) Replace the new knob on its shaft and
necessary.
tighten the setscrews.
e. Remove rust or corrosion with a light grade of
c. Replacement of Fuses.
sandpaper and repaint the exposed metal surface.
(1) Press in on the fuseholder cap and rotate it
counterclockwise to unlock it.
4-7. Visual Inspection
(2) Pull the fuseholder cap and the fuse out of
a When the equipment fails to perform properly,
the fuseholder.
turn off the power and check all the items listed
( 3 ) Remove the defective fuse from the
below. Do not check any item with the power on.
fuseholder cap.
(1) Check to see that the switches and controls
(4) Replace the defective fuse with a new one
have been set properly.
with the same rating.
(2) Check to see that the power and rf jumper
(5) Insert the fuse and fuseholder cap in the
cables are connected properly.
fuseholder. Push in on the fuseholder cap and rotate
(3) Check for burned-out indicator lamps or
it clockwise to lock it.
4-6
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