TM 11-5841-283-12/NAVAIR 16-30APR39-1
TROUBLESHOOTING.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. MA lamp on radar signal indicator does not flash and no MA audio is present.
Check for bad comparator. See troubleshooting flowcharts at back of manual.
If comparator is bad, replace unit with a new one. Turn in bad unit for
5. MA lamp on radar signal indicator flashes only when SELF TEST button is released.
Check for bad comparator. See troubleshooting flowcharts at back of manual.
If comparator is bad, replace unit with a new one. Turn in bad unit for
6. Upper half of indicator strobe on radar signal indicator screen is missing or shorter and
bends to the right or left.
Check for bad forward radar receiver. See troubleshooting flowcharts at back of
manual.
If forward radar receiver is bad, replace unit with a new one. Turn in bad
7. Lower half of indicator strobe on radar signal indicator screen is missing or shorter and
bends to right or left.
Check for bad aft radar receiver. See troubleshooting flowcharts at back of
manual.
If aft radar receiver is bad, replace unit with a new one. Turn in bad unit
8. MA lamp does not flash, but MA audio is heard.
MA lamp is not replaceable at AVUM level. Go to corrective action.
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