Turn to page 3-7 in the extract and take a look at the basic test
Notice that it is divided into three columns.
setup column tells you how to adjust your equipment for different checks.
The test procedure column tells you how to adjust your equipment for
The test procedure column tells you how to get an
The normal indication column shows you what the test result
will be if the radio is good.
Suppose you have a radio on which you are about to do a basic test.
You would take a piece of paper and write down the following:
These numbers correspond to the steps of the basic test that give you an
indication. If the indication you get for a test is normal, you write down
a 1 by that test. If you get an abnormal indication, you write down a 0.
So, if you got all 1s on the basic test, this would mean the radio was good.
guide. Then, proceed to the next step. Take your time and study the chart
You see that the information you get from the basic test along with
the fault isolation guide tells you a great deal.
a. It could tell you if 1A1 of 1A2 was defective.
b. It will tell you what subtest to do.
The results of the subtest
will tell you what subassembly to replace.
Ask the training supervisor for a known good radio. Once you have the
radio, do a basic test on it. Write down the results of the test using the
0 or 1 method. Should you have any problem, ask your training supervisor
Did the training supervisor give you a good radio? If you got all 1s,
it would mean that the radio was good. Ask your supervisor for a radio that
has a defect in the 1A2 subassembly. Once you have the radio, do a basic
test on it. Then, proceed to the next step.
What were the results of the basic test?
Did the fault isolation
guide tell you to replace 1A2? The guide may have told you to do a certain
subtest. Follow the suggestion of the fault isolation guide and replace 1A2
or perform the indicated subtest.
Figure 3-4 on page 3-10 of your extract shows the location of