maintaining combat serviceability, the charts indicate
3-1. Scope of Operator Maintenance
what to check, how to check, and what the normal
The maintenance duties assigned to the operator of
conditions are; the Reference column lists the
Telephone Test Set TS-716/U are listed below, together
illustrations, paragraphs, or manuals that contain
with references to the paragraphs covering the specific
detailed repair or replacement procedures. If the defect
maintenance functions. These duties do not require
cannot be remedied by performing the corrective action
special tools or test equipment.
indicated, higher level of maintenance or repair is
required. Records and reports of these checks and
a. Daily preventive maintenance checks and
services must be made in accordance with the
requirements set forth in TM 38750.
3-3. Preventive Maintenance Checks and
3-2. Operator Preventive Maintenance
Preventive maintenance is the systematic care,
servicing, and inspection of equipment to prevent the
a. Preventive maintenance checks and services
occurrence of trouble, to reduce downtime, and to assure
of Telephone Test Set TS-716/U are required daily,
that the equipment is serviceable.
a. Systematic Care. The procedures given in
weekly, and monthly.
b. Paragraph 3-4 specifies checks and services
care and cleaning essential to proper upkeep and
that must be accomplished daily and under the following
operation of the equipment.
b. Preventive Maintenance Checks and Services.
(1) When the equipment is initially put in
The preventive maintenance checks and services charts
(para 3-4, 4-2, and 4-3) outline functions
to be performed
(2) Immediately before going on a mission.
at specific intervals. These checks and services are to
(3) Immediately after return from a mission.
maintain Army electronic equipment in a combat-
(4) At least once a week if the equipment is
serviceable condition; that is, in good general (physical)
maintained in a standby condition.
condition and in good operating condition. To assist
3-4. Daily Preventive Maintenance Checks and Services Chart
See that the equipment is complete
Exterior surfaces ................
See that the case and all exposed surfaces of the opened
TS-716/U are clean, and free from moisture.
Meter window and
Check the meter window and indicator lenses for cracks.