c. Clean the panel, meter, and control knobs; use a soft,
cloth with water; mild soap may be used for more effective
clean cloth. If necessary, dampen the
cleaning. Wipe dry with a lint-free cloth.
Section II. ORGANIZATIONAL MAINTENANCE
maximum operating capability. Preventive maintenance
4-7. Scope of Organizational
is the responsibility of all maintenance categories
concerned with the equipment and includes the
The maintenance duties assigned to the organizational
inspection, testing, and repair or replacement of parts,
repairman of the radio set are listed below, together with a
subassemblies, or assemblies that inspection and tests
reference to the paragraphs covering the specific
indicate would probably fail before the next scheduled
periodic service. Preventive maintenance checks and
Weekly preventive maintenance checks and
services of the radio set at organizational category are
services 1 para 4-11 ).
made weekly and quarterly unless otherwise directed by
b. Quarterly preventive maintenance checks and
the commanding officer.
services (para 4-13).
b. Maintenance forms and records to be used and
c. Touchup painting instruction (para 4-14).
maintained on this equipment are specified in TM 38-750.
d. Organizational troubleshooting (para 4-16).
4-10. Weekly Maintenance
4-8. Test Equipment, Tools, and Material
Weekly preventive maintenance checks and services on
the radio set are required. Periodic daily services
The test equipment, tools, and technical manuals for the
constitute a part of the weekly preventive maintenance
organizational repairman are listed below.
checks and services and must be performed concurrently.
a. Tool Kit, Radio Repair TK-101/G.
All deficiencies or shortcomings will be recorded in
b. Multimeter AN/URM-105 (TM 11-6625-203-12).
accordance with the requirements of TM 38-750. Perform
c. Fine sandpaper.
all the checks and services listed in the weekly preventive
4-9. Organizational Maintenance
maintenance checks and services chart (para 4-11) in the
a. Preventive maintenance is the systematic care,
inspection, and servicing of equipment to maintain it in
serviceable condition, prevent breakdowns , and assure
4-11. Weekly Preventive Maintenance Checks and Services Chart
Item to be inspected
External hardware...............................See that external hardware is properly tightened.
Controls and switches .........................While making operating checks, (sequence No. 3 and 4),
observe that mechanical action of each control and switch
is smooth and free from binding.
Preliminary ......................................... Repeat paragraph 3-4 except for e.
Receiver transmitter performance. a. Set POWER/LIGHTS switch (fig. 3-1; to ON/LO; ob
performance serve that panel lamps are dim. Set POWER/LIGHTS
switch to ON/HI; observe that panel lamps are brighter.
b. Set POWER/LIGHTS switch to ON/LO and press
BATTERY TEST pushbutton The XMTR OUTPUT
meter indicates in white area.
c. Observe that receiver output is obtained in handset.
d. Set XMTR PWR switch to LO, press handset push-to-
talk switch and speak in a normal voice into handset
microphone. Observe that sidetone is heard in handset
e. Set XMTR PWR switch to OFF and set
POWER/LIGHTS switch to OFF/OFF.
4-12. Quarterly Maintenance
Quarterly preventive maintenance checks and services on
concurrently. All deficiencies or shortcomings will be
the radio set are required. Periodic daily and weekly
recorded in accordance with the requirements of TM 38-
services constitute a part of the quarterly preventive
750. Perform all the checks and services listed in the
maintenance checks and services and must be performed