b) A PASS or FAIL indication is shown if the CMC monitored the test. If a PASS indication is shown, no failures occurred during the test. If a FAIL> prompt is shown, failure information is available on the CONFIDENCE TEST MSG page.
(c) CONFIDENCE TEST MSG page
1) The CONFIDENCE TESTS MSG page shows data related to the failure of the confidence test.
(9) EICAS Maintenance Pages (Fig. 12)
(a)
The EICAS maintenance pages function provides an alternate way to show an EICAS maintenance page on the lower EICAS display. For a complete description of EICAS maintenance pages and maintenance page snapshots, refer to 31-61-00/001.
(b)
EICAS MAINT PAGES menu
1) The EICAS MAINT PAGES menu shows all systems that have EICAS maintenance pages. The list is in ATA chapter sequence.
2) Selection of a system from the menu causes the EICAS PAGE CONTROL menu to be shown. The ATA chapter and name of the selected system shows on the menu.
(c) EICAS PAGE CONTROL menu
1) The EICAS PAGE CONTROL menu provides control over the display of EICAS maintenance pages. This menu provides the four prompts described below:
2) Selection of <DISPLAY causes the maintenance page for the selected system to show on the lower EICAS display.
3) Selection of <RECORD makes a manual snapshot of the maintenance page for the selected system.
4) Selection of <MANUAL SNAPSHOT causes a list of manual snapshots for the selected system to show on the CDU. From the list, you can select a snapshot to look at on the auxiliary EICAS.
5) Selection of <AUTO SNAPSHOT causes a list of automatic snapshots for the selected system to show on the CDU. From the list, you can select a snapshot to look at on the auxiliary EICAS.
(10) Ground Tests (Fig. 13)
(a)
The ground tests function provides a way to start BITE tests of airplane systems and LRUs. The CMC transmits a signal to an LRU to start the BITE test. When the test is completed, the LRU sends the test results to the CMC. The CMC shows the test result on the CDU.
(b)
GROUND TESTS menus
1) The first GROUND TESTS menu is a list of all systems which have ground tests. The list is in ATA chapter sequence. Selection of a system causes the second GROUND TESTS menu to be shown.
2) The second GROUND TESTS menu is a list of all LRUs in the selected system that have ground tests.
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3) Two general types of ground tests are available, BITE and interactive BITE. BITE tests run automatically when selected. Interactive BITE tests require operator action. The second GROUND TESTS menu lists both types of tests and does not differentiate between them.
4) The second GROUND TESTS menu allows tests to be selected and shows the test results. When an INHIBITED indication is shown above the test name, the test cannot operate. (The caret (<) is not shown adjacent to a test that cannot operate.) A test is said to be inhibited if it cannot operate.
(c)
TO ENABLE TEST page
1) Selection of an inhibited test causes a page of instructions with the words TO ENABLE TEST at the top to be shown. Completion of these instructions will allow the test to operate. 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機維護手冊 中央維護計算機系統(8)
