TM 1-8415-215-12&P
Table 3-2. AVUM Maintenance Troubleshooting Chart (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. UNABLE TO ADJUST CHIN STRAR
Inspect for defective chin strap.
Replace defective chin strap per paragraph 3-7.
4. UNABLE TO ATTACH CHIN STRAR
Inspect for defective D-Ring.
Replace chin strap retention assembly per paragraph 3-7.
5. UNABLE TO ADJUST NAPE STRAP.
Inspect for defective buckle and worn strap.
Replace retention assembly per paragraph 3-7.
6. UNABLE TO KEEP MICROPHONE IN POSITION.
Step 1. Inspect for loose connecting screw in center of boom.
Replace if unable to tighten.
Step 2. Inspect for loose connecting screws at end of mike boom.
Replace if unable to tighten.
3-8
