TM 11-4920-292-15
MK-1040A/ASN MAINTENANCE
Provide thorough ventilation when-
Scope of Maintenance
ever used. DO NOT use near an open
The maintenance duties assigned to the opera-
flame. Trichloroethane is not flamma-
tor of MK-1040A/ASN are listed below to-
ble but exposure of fumes to an open
gether with a reference to the paragraphs
flame converts the fumes to highly
covering the specific maintenance function.
toxic, dangerous gases.
These duties do not require special tools or test
b. Remove grease, fungus, and ground-in dirt
equipment.
from the CY-6508/ASN; use a cloth dampened
(not wet) with trichloroethane.
c. Remove dust or dirt from plugs and jacks
with a brush.
Preventive maintenance is the systematic care,
Remove rust and corrosion from metal surfaces
servicing, and inspection of the MK-1040A/
by lightly sanding them with fine sandpaper.
ASN to prevent the occurrence of trouble,
Brush two thin coats of paint on the bare metal
reduce downtime, and assure that the adapters
for protection against further corrosion. Refer
are serviceable.
to applicable cleaning and refinishing practices
specified in TB 746-10.
10-3. Cleaning
Inspect the exterior surfaces of the CY-6508/
10-5. Troubleshooting
ASN and internal adapters. Exterior surfaces
Troubleshooting the MK-1040A/ASN consists
should be free of dust, dirt, grease, and fungus.
of performing continuity and insulation resist-
a. Remove dust and loose dirt with a clean,
ance tests on the adapter cables using Multi-
soft cloth.
meter AN/USM-223 and Ohmmeter ZM-21/U.
Refer to schematic diagrams shown in figures
WARNING
The fumes of trichloroethane are toxic.
Change 2 10-1
Previous Page
