TO ENABLE TEST
Ground Tests - BITE
Figure 205 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE/CMCS BITE MANUAL
TEST PRECONDITIONS
Ground Tests - BITE
Figure 205 (Sheet 3)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE/CMCS BITE MANUAL
A. General
(1)
The ground tests function lets maintenance persons use the CDU to start BITE tests of airplane systems and LRUs. The CMCS 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 results on the CDU.
(2)
After you do these steps, you will see a ground test menu. The menu shows the name of the ground test you will do. You must return to the procedure which referred you to this one to start the test.
B. Access
(1) Location zones
221 Control Cabin, LH
222 Control Cabin, RH
C. Procedure
S 862-030
(1) Show the CMC MENU on the CDU:
(a)
Push the MENU key on the CDU to show the CDU MENU.
(b)
Push the <CMC LSK (line select key) to show the CMC MENU.
(c)
If the CMC MENU is not shown after you push the CMC LSK, push the <RETURN LSK until you see the CMC MENU.
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(2) Show the GROUND TESTS menu which contains the test you will do:
(a)
Push the <GROUND TESTS LSK to show the GROUND TESTS menu.
(b)
Push the NEXT PAGE key if it is necessary until you find the correct system prompt.
(c)
Push the LSK adjacent to the applicable system prompt to show the GROUND TESTS menu for that system.
(d)
Push the NEXT PAGE key if it is necessary until you find the applicable test prompt.
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(3) If INHIBITED shows above the test prompt:
(a)
Push the LSK that is adjacent to the test prompt.
(b)
Do the steps shown on the TO ENABLE TEST page.
(c)
Push the LSK that is adjacent to <RETURN to show the ground test menu again.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE/CMCS BITE MANUAL
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CAUTION: REFER TO THE APPLICABLE ADJUSTMENT/TEST PROCEDURE TO DO THE
_______ GROUND TEST (SEE TABLE I). FAILURE TO PUT THE SYSTEM IN ITS CORRECT INITIAL CONDITION CAN CAUSE DAMAGE TO THE EQUIPMENT.
(4)
If a TEST PRECONDITIONS page shows when you start the test, make sure each instruction on the page is completed. (Push the NEXT PAGE key to see the subsequent pages.)
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(5)
Refer to the applicable ground test procedure before you start the test (Ref Table I).
NOTE:____Table I shows all the available CMCS ground tests. These are are the prompts that show on the GROUND TESTS menus. The table also shows the location of the ground test procedures in the AMM.
~................................................. | GROUND TESTS MENU PROMPT | AMM REFERENCE | ...................................................
| <21 AIR CONDITIONING | |
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