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DFCS BITE PAGES - ERASE FAULT HISTORY
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SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
DFCS BITE PAGES - LRU REPLACEMENT TESTS
General
The LRU replacement test makes sure that the replacement LRU operates correctly. The test can have these tests:
-Autotests
-Interactive tests.
You can start an LRU replacement test from the DFCS BITE MAIN MENU page.
DFCS BITE MAIN MENU Page
To do an LRU replacement test, push LSK 2L. This shows the LRU REPLACEMENT SELECT CHANNEL page.
LRU REPLACEMENT SELECT CHANNEL Page
You select if you want to do an LRU replacement test for FCC A and/or FCC B. To do this, push LSK 2L, 3L, or 4L. This shows the LRU REPLACEMENT page.
LRU REPLACEMENT Page
This page lists the LRUs that you can use for the test. Push the LSK next to the LRU to start the test. To see all of the LRUs that you can test, push the NEXT PAGE and PREV PAGE function keys on the MCDU.
Continue the Test
When you push one of the LSKs, you start the LRU replacement test. The test sequence is the same as when you select CURRENT STATUS and AUTOPILOT tests. The pages look very similar except the title has LRU REPLACEMENT in it instead of CURRENT STATUS and AUTOPILOT.
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737-700 MAINTENANCE TRAINING MANUAL
LRU THAT CAN BE TESTED
THE TESTS FOLLOW THE SAME SEQUENCE AS THE CURRENT STATUS AUTOTESTS AND AUTOPILOT INTERACTIVE TESTS.
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DFCS BITE PAGES - LRU REPLACEMENT TESTS
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737-700 MAINTENANCE TRAINING MANUAL
DFCS BITE PAGES - LAND VERIFY
General
The land verify tests do a check of many of the autoland sensors and hardware. It also does a check of the systems that the crew can use in a dual channel operation.
You can start a land verify test from the DFCS BITE MAIN MENU page.
DFCS BITE MAIN MENU Page
To do a land verify test, push LSK 3L. This shows the LAND VERIFY AUTOTEST INITIALIZATION page.
LAND VERIFY AUTOTEST INITIALIZATION Page
This page gives instructions to setup the land verify test. After you have setup the test correctly, push LSK 6L to continue the test. If the setup is not correct, you get the INITIALIZATION SETUP INCORRECT page. If the setup is correct, you get the page that tells you the autotest is in progress.
INITIALIZATION SETUP INCORRECT Page
This page tells you that the initialization setup is not correct. To return to the setup page, push LSK 6R. If you made the correct changes, push LSK 6L to continue.
Land Verify Autotest
If the setup is correct, the autotests for all systems in group 49 start. As the tests continue, the name of the system in test and its library number show on the MCDU page. The page also shows the percentage of the tests completed.
Continue the Test
When the autotests complete, the next tests are the interactive tests. The test sequence is the same as when you select AUTOPILOT tests. The pages look very similar except the title has LAND VERIFY in it instead of AUTOPILOT.
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