TM 03-006-UG
Copyright © 2004 Raytheon Company ALL RIGHTS RESERVED
Revision - 35
5 SELF TEST (TEST MODE)
The IST-2 performs an automatic self-test upon recovery. The self-test mode executes a battery of tests, report-
ing board/link recovery states and a test summary status to the LCD Display, as well as individual test results to
the debug port of the Red Control and Audio Board. Although there are several tests to perform, the automatic
Test Mode presents only the summary results to the LCD display in order to expedite the power up process of
the IST-2.
The Self-Test Mode consists of two subparts. The first subpart entails a sequence of tests that are automatically
executed whenever the IST-2 is powered up or reset. Without any user action, the phone will automatically pro-
gress to the Normal Mode if no critical failures are detected. The second subpart of the Test Mode is an optional
Manual Test Mode. At the conclusion of the automatic testing the user or maintenance technician will be given
the opportunity to enter this Manual Test Mode by pressing the middle “soft key” before timeout. There will be
no display message prompting the user to enter the Manual Test Mode. Once entered into the Manual Test
Mode the user will be given a display menu that allows him to select one of five different manual tests. If he
does not select a test within the 5-second period, the phone will transition into the Normal Mode. If he selects a
manual test specific testing involving user interaction will be performed. At the conclusion or timeout of the
selected manual test, the phone will again display the 5 manual test options. The user can then select another (or
same) manual test or simply allow the 5-second timer to expire, entering the Normal Mode. Figure 2 illustrates
the self-test flow.
If the IST-2 experiences a failure during its self-test cycle (either during the automatic or manual self test mode),
report the failure indication to the local maintenance technician.
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