cracked, or missing. Pay particular attention to the
2-4.
Weekly Preventive Maintenance Checks and
moving parts of the headband assembly to see that they
Services Chart
do not bind and are not bent or distorted. If there is any
The headset-microphone will be inspected visually by
defect, refer the headset-microphone to direct support
organizational maintenance personnel to see that none
category of maintenance for repair.
of the mechanical or electrical assemblies are broken,
Sequence
No.
Item to be inspected
Procedure
References
1
Overall physical condition. Inspect mechanical assemblies to insure that no
Fig. 1-1.
part is missing, damaged, or broken or has
reached a mechanical condition where further
2
Exterior............................... Inspect exterior of dome shells for cracks. Check
Fig. 1-1.
dome shell are open. Clean pressure equaliza-
tion holes if blocked.
3
Interior ................................ Inspect interior of earphones and microphones
for dirt, moisture, fungus, and corrosion. Clean
as needed.
4
Headband cover and
Inspect headband and ear seals for dirt and worn
ear seals,
or torn spots. Ear seals may be removed and
cleaned, if soiled. Ear seals should be replaced
if damaged or hardened.
5
Microphone......................... Inspect microphone for tightness and condition
Fig. 1-1.
of moisture barrier. Check microphone guard
for proper mounting.
6
Publications ........................ Check to see that all publications are complete,
DA Pam 310-4.
serviceable, and current.
7
Modifications ...................... Check DA Pam 310-7 to determine if new appli-
TM 38-750.
cable MWO's have been published. All URGENT
MWO's must be applied immediately.
2-5.
Cleaning
Use mild soap and warm water to clean the metalwork
or vinyl-covered foam ear seals. Handle the parts
carefully and dry them thoroughly.
8