S 745-027
(8)
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.
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747-400 MAINTENANCE MANUAL
(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 <32 PSEU SYSTEM.
(f)
Push the LSK that is adjacent to <32 PSEU SYSTEM to show the GROUND TESTS menu for the PSEU system.
NOTE: If INHIBITED shows above <PSEU SYSTEM, the test will
____
not operate.
(g) Push the NEXT PAGE key until you find <PSEU SYSTEM.
NOTE: If INHIBITED shows above <PSEU SYSTEM, the test will
____
not operate.
(h) If INHIBITED shows above <PSEU SYSTEM: 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. PSEU System Ground Test
S 745-028
(1)
Push the LSK that is adjacent to <PSEU SYSTEM.
(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>.
NOTE: IN PROGRESS shows during the test.
____
S 745-029
(2) When IN PROGRESS goes out of view, look for PASS or FAIL> adjacent to <PSEU SYSTEM.
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.
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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 865-030
(1)
Set the GND TESTS switch to the NORM position.
S 445-033
(2)
Do the activation procedure for the thrust reverser
(AMM 78-31-00/201).
S 445-035
(3)
If you opened the circuit breakers for the LE flap system before you did the PSEU ground test, do this step:
(a)
Remove the DO-NOT-CLOSE tags and close these circuit breakers: 1) P6 Main Power Distribution Panel
(in the flight compartment) a) 6E3, PRI LE FLAP CONT GRP A AC b) 6E4, PRI LE FLAP CONT GRP A DC c) 6E5, PRI LE FLAP CONT GRP B AC d) 6E6, PRI LE FLAP CONT GRP B DC e) 6L21, LE FLAP ELEC CONT GRP B DRIVE 1 f) 6L22, LE FLAP ELEC CONT GRP A DRIVE 2 g) 6L23, LE FLAP ELEC CONT GRP A DRIVE 3 h) 6L24, LE FLAP ELEC CONT GRP A DRIVE 4
2) P414 Left Power Distribution Center
(in the main equipment center) a) 414A2, LE FLAP ELEC DRIVE 4 b) 414A5, LE FLAP ELEC DRIVE 1
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