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747-400 MAINTENANCE MANUAL
(d)
CDU installed (AMM 34-61-02/401).
(e)
Central Maintenance Computer System (CMCS), serviceable (AMM 45-10-00/501).
E. Prepare for the Test
S 865-043
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-111
(2)
Make sure the engines are off.
S 865-044
(3)
Prepare the CDU for the test:
(a)
Push the MENU key on the CDU to show the MENU.
(b)
Push the <CMC line select key (LSK) to show the CMC MENU.
(c)
If <RETURN shows after you push the LSK, push the LSK that is adjacent to <RETURN until you see the CMC MENU.
(d)
Push the LSK that is adjacent to <GROUND TESTS to show the GROUND TESTS menu.
(e)
Push the NEXT PAGE key until you find <31 RECORDING.
(f)
Push the LSK that is adjacent to <31 RECORDING to show the GROUND TESTS menu for the recording systems.
NOTE: If the INHIBITED indication is shown above <ACMS, the
____
test will not operate.
(g) If INHIBITED shows above the <ACMS prompt: 1) Push the LSK that is adjacent to the test prompt. 2) Do the steps shown on the CDU. 3) Push the LSK that is adjacent to <RETURN to show the ground
test menu again.
F. ACMS Ground Test
S 745-045
(1) Push the LSK that is adjacent to <ACMS.
NOTE: The IN PROGRESS indication shows during the test.
____
(a) When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <ACMS.
NOTE: If a PASS indication shows, no failures occurred
____
during the test.
(b) If FAIL> shows: 1) Push the LSK that is adjacent to FAIL> to see the GROUND TEST MSG pages for the failure. 2) Push the NEXT PAGE key until you find all the GROUND TEST MSG pages.
3) Make a list of all CMCS messages, CMCS message numbers, and ATA numbers that show on the GROUND TEST MSG pages.
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4) Go to the CMCS Message Index of the Fault Isolation Manual (FIM) to find the corrective action for each CMCS message.
G. Put the Airplane in Its Usual Condition
S 865-046
(1) Remove the electrical power if it is not necessary
(AMM 24-22-00/201).
TASK 31-35-00-735-184
4. System Test - Airplane Condition Monitoring System__________________________________________________
A. Equipment
(1) A27092-84 Actuator/Deactuator Set - Proximity Sensors, or equivalent
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-09-02/201, Air/Ground Relay System
C. Access
(1) Location Zone
117 Electrical/Electronic Compartment, Left
221 Flight Compartment, Left
222 Flight Compartment, Right
D. CMC Interface Test
S 745-185
(1) Do the CMCS ground test of the airplane condition monitoring system (AMM 31-35-00/501).
E. DMU Discrete Input Test
S 865-186
(1) Do these steps to get access to the ACMS DISCRETE INPUT display on the CDU:
(a)
Push the MENU key on the center CDU.
(b)
Push the line select key adjacent to <ACMS.
(c)
Push the line select key adjacent to <DATA DISPLAY.
(d)
Push the line select key adjacent to <DISCRETE DATA.
(e)
Make sure that the DISCRETE DATA display shows on the CDU.
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