LESSON 1
TROUBLESHOOT RADIO RECEIVER R-1496/ARN-89
TASK
Troubleshoot radio receiver R-1496/ARN-89 to a defective subassembly.
CONDITIONS
Given a radio receiver R-1496( )/ARN-89( ), radio set control C-7392( )/ARN-
89( ), maintenance kit MK-994/AR, signal generator SG-1170/U, digital
multimeter AN/USM-486, oscilloscope AN/USM-488, headset H-101( )/U or
equivalent, this subcourse booklet, and a qualified supervisory on-the-job-
training (OJT) monitor.
STANDARD
Acceptable performance is obtained when the soldier can isolate the fault to
a defective subassembly in two of three receivers, within 1 hour per
receiver.
Learning Event 1:
INTRODUCTION TO TEST EQUIPMENT AND TEST SETUP PROCEDURES
NOTE:
From time to time, you will refer to Chapter 3 of TM 11-5826-227-
34, which is in the extract in the back of this subcourse. Read
CAREFULLY paragraph 3-3, Section III of the extract, prior to
proceeding with this or subsequent lessons.
1.
The main points you should have gotten from the material you read are
shown below.
a.
You must take precautions to prevent damaging the radio
b.
You must use many items of test equipment to help you do your
job.
2.
Now, get the following items of equipment:
1
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