TM 11-5841-283-12/NAVAIR 16-30APR39-1
Section IV AVIATION UNIT TROUBLESHOOTING
Page
Subject
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symptom Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OVERVIEW
The troubleshooting table Iists problems that you may find when operating the radar signal
detecting set equipment or when doing the PMCS.
The troubleshooting table does not list all of the problems which you may find. If your problem
is not listed, report it to your supervisor. If the troubleshooting steps do not solve your
problem, report it to your supervisor. When working on any problem, be sure to report your
work on the forms shown in TM 38-750.
To use the troubleshooting table, first find your problem in the symptom index. The symptom
index is organized by component and problems for each component. The index will give you a page
number on which you will find your problem and the possible corrections. Turn to that page, find
your problem, and use the procedures shown to correct it.
SYMPTOM INDEX
The symptom index lists problems that may be found while performing the system function test.
Page
RADAR SIGNAL INDICATOR
No indicator strobe and no audio present . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
No indicator strobe and only MA audio Present . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NO indicator strobe and all audio present. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MA lamp does not flash and no MA audio present. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MA lamp flashes only when SELF TEST button is released. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Upper half of indicator strobe is missing or shorter and
bends to right or left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lower half of indicator strobe is missing or shorter and
bends to right or left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MA Iamp does not flash, but MA audio is heard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Not transmitting signal image (strobe) to indicator or signal
image is weak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-41