D. Preconditions
S 865-450
(1) These conditions are necessary for this task:
(a)
Electrical Power On (AMM 24-22-00/201).
(b)
Control Display Unit (CDU), serviceable (AMM 34-61-02/401).
(c)
Central Maintenance Computer (CMC), serviceable (AMM 45-10-00/501).
(d)
Flight Control Computer (FCC), serviceable (AMM 22-11-01/401).
(e)
Flight Management Computer (FMC), serviceable (AMM 34-61-00/501).
E. Prepare for the Test
S 865-338
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-339
(2)
Prepare the CDU for the test:
(a)
Push the MENU key on the CDU to show the MENU.
(b)
Push the line select key (LSK) that is adjacent to <CMC 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 LSK that is adjacent to <22 AUTOPILOT FLT DIR to show the GROUND TESTS menu for the autopilot flight director system.
(f)
Push the NEXT PAGE key if it is necessary until you find <A/P DISC SWITCH.
NOTE: If INHIBITED shows above <A/P DISC SWITCH, the test will
____
not operate.
(g) If INHIBITED shows above <A/P DISC SWITCH: 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.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
22-10-00
ALL ú ú 07 Page 518 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
F. Autopilot Disconnect Switch Ground Test
S 745-340
(1) Push the LSK that is adjacent to <A/P DISC SWITCH.
(a)
When the TEST PRECONDITIONS page shows, make sure each instruction on the page is completed. (Push the NEXT PAGE key to see subsequent pages.)
(b)
Push the LSK that is adjacent to START TEST>.
(c)
Continue with the instructions shown on the CDU to complete the test.
NOTE: If <ADVANCE shown during the test, push <ADVANCE to
____ continue after you complete or read the instruction.
S 745-341
(2) When the test is completed, look for PASS or FAIL> adjacent to <A/P DISC SWITCH.
NOTE: If a PASS indication shows, no failures occurred during the
____
test.
(a) 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.
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 865-342
(1) Remove the electrical power if it is not necessary
(AMM 24-22-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
22-10-00
ALL ú ú 06 Page 519 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
TASK 22-10-00-745-197
9. Ground Test - Go-Around Switch______________________________
A. General
(1) This test is for a check of the go-around switches and their interfaces to the FCCs.
B. References
(1)
AMM 22-11-01/401, Flight Control Computer
(2)
AMM 24-22-00/201, Manual Control
(3)
AMM 34-61-00/501, Flight Management Computer System
(4)
AMM 34-61-02/401, Control Display Unit
