b. Radio receiver R-1496( )/ARN-89( ).
c. Test facilities kit MK-994/AR.
d. Digital multimeter AN/USM-486.
e. Signal generator SG-1170/U.
4.
Turn to page 3-11 of TM 11-5826-227-34 in the extract
of
this
subcourse. Using Figure 3-5 as a guide, connect your equipment.
5.
Ask the training supervisor for a known good control unit. Using the
procedure outlined in paragraph 3-4, subparagraph N, do a basic test on it.
Write down the results of the test using 0 or 1 method, and note if the test
result applies to all frequencies or only for some frequencies. Should you
have any problem, ask your training supervisor for help.
6.
Ask your training supervisor for a control unit that has a defect in
the 2A3 subassembly. Once you have the control unit, do a basic test on it.
NOTE:
Replace modules in the control unit using paragraph 3-8 as a
guide.
7.
What were the results of the basic test?
Did the fault isolation
guide tell you to replace the 2A3 subassembly?
Anytime you replace a
subassembly that you think is faulty, you will have to repeat the test that
indicated that particular subassembly was faulty. If the test now gives you
a normal indication, you know the subassembly was indeed faulty.
8.
Ask your training supervisor for another control unit that contains a
faulty subassembly. When you have it, troubleshoot it to find the defective
subassembly.
Discuss with the training supervisor what you found and any
problems you might be having.
9.
Ask the training supervisor for another control unit with a defect.
You should keep asking the training supervisor for defective control units
and troubleshooting them until you feel confident of your ability.
Remember, the training supervisor is willing to help you should you need
help. When you feel you are ready to take the performance test, inform the
training supervisor of your decision.
Work at your own pace and take a
break when you need one.
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