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A
747-400 MAINTENANCE MANUAL
S 864-009
(2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P7, Overhead Circuit Breaker Panel
1) 7B12, UPR RUD RATIO AC PWR
2) 7B13, UPR RUD RATIO DC PWR
3) 7B14, LWR RUD RATIO AC PWR
4) 7B15, LWR RUD RATIO DC PWR
5) 7C10, FLT CONT ELEC 2L AC
6) 7C11, FLT CONT ELEC 2L DC
7) 7C12, FLT CONT ELEC 1L AC
8) 7C13, FLT CONT ELEC 1L DC
9) 7C14, FLT CONT ELEC 1R AC
10) 7C15, FLT CONT ELEC 1R DC
11) 7C16, FLT CONT ELEC 2R AC
12) 7C17, FLT CONT ELEC 2R DC
13) 7D18, OUTBOARD AILERON LOCKOUT
14) 7E6, STAB TRIM L CONT
15) 7E7, STAB TRIM L S/O VLV
16) 7E8, STAB TRIM L RATE
17) 7E19, STAB TRIM R CONT
18) 7E20, STAB TRIM R S/O VLV
19) 7E21, STAB TRIM R RATE
D.
Do a Check of the SRM Existing Faults
S 864-025
(1)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
S 864-012
(2)
Make sure the FLT CONTROL HYD POWER TAIL switches on the P461 Pilots' Overhead Maintenance Panel are in NORM.
S 864-023
(3)
Set STAB TRIM 3 switch to the CUTOUT and the STAB TRIM 2 switch to the AUTO or ON.
NOTE: There will be a five second delay before the operation when
____
the switches move from CUTOUT to AUTO.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-014
(4)
Do this task to pressurize the hydraulic system No. 2: "Supply Hydraulic Power" (AMM 29-11-00/201).
S 864-015
(5)
Do this task to release the pressure in the hydraulic system No. 3: "Remove Hydraulic Power" (AMM 29-11-00/201).
S 724-016
(6)
Do the SRM operational test with the hydraulic system No. 2:
(a)
Hold STAB TRIM switches on the captain's control wheel to the NOSE UP for 5 seconds. 1) Make sure the stabilizer position indicators on the control
stand move to APL NOSE UP.
2) Release the STAB TRIM switches.
(b)
Push the key for EXISTING FAULTS from the CMC MENU page on the CDU.
(c)
Push the key for 27 STABILIZER TRIM from the existing faults menu page on the CMC (The 27 STAB TRIM will not show if there are no faults).
(d)
Make sure that these existing faults messages do not show on the CDU: 1) SRM-L Fail (SRM-L) 2) SRM-L Fail (SRM-R)
(e)
Hold STAB TRIM switches on the captain's control wheel to the NOSE DN for 5 seconds. 1) Make sure that the stabilizer position indicators on the
control stand move to APL NOSE DN.
2) Release the STAB TRIM switches.
(f)
Push the key for 27 STABILIZER TRIM on the menu page for existing faults of the CMC (The 27 STAB TRIM will not show if there are no faults).
(g)
Make sure that these existing faults messages do not show on the CDU: 1) SRM-L Fail (SRM-L)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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747-400 MAINTENANCE MANUAL
2) SRM-L Fail (SRM-R)
S 864-017
(7) Do this task to release the pressure in the hydraulic system No. 2:
"Remove Hydraulic Power" (AMM 29-11-00/201).
S 864-024
(8) Set STAB TRIM 2 switch to the CUTOUT and the STAB TRIM 3 switch to
the AUTO or ON.
NOTE:____ There will be a five second delay before the operation when
the switches move from CUTOUT to AUTO.
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