TM 9-1240-262-34&P
HOW TO TROUBLESHOOT
The following steps tell you how to troubleshoot. A diagram of these steps is on page 1-3.
Do a visual check of the assembly and list any faults on DA Form 2404 before making
repairs. See Vol II, Chap 3 for what to check for.
If you see any faults that may affect the checkout procedure, fix them now. This does not
mean small things like painting scratches.
Do the checkout procedure in Vol I, Chap 2 from the beginning until you find a fault
symptom.
When a fault Symptom is found, go to the chapter noted and follow the maintenance
procedure given there. If you already know the fault symptom, look at the fault symptom -
index in Chapter 3 of this volume. This will also tell you what to do.
After the fault symptom has been corrected, do the checkout procedure in Chapter 2 again.
This is to make sure that all fault symptoms have been corrected.
If all fault symptoms are now corrected, do the maintenance tasks on DA Form 2404.
Do the final inspection given in Vol II, Chap 5.
The job is over and the good telescope is sent back to service.
If all fault symptoms were not corrected after step E, the bad assembly is sent back to the
depot for repair.
The sample fault isolation procedure (para 1-5) shows you how to use the flow charts in this volume.
Vol I
