(21)
Stop for 30 seconds.
(22)
Make sure that bit 23 for the ARINC word "E/26/350/00" is "0".
S 865-196
S 745-197
NOTE: (E/26/350/00, BIT 23) = SRM-L UNSCHEDULED TRIM SIGNAL ->
____
SRM-R INTERFACE FAIL
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747-400
MAINTENANCE MANUAL
S 745-198
(23)
Use the PREV PAGE key on the CDU to show page 4 of the INPUT MONITORING.
S 745-199
(24)
Make sure that bit 14 for the ARINC word "E/53/270/00" is "0".
NOTE: (E/53/270/00, BIT 14) = UNSCHEDULED TRIM IND (SRM-L)
____
S 865-200
(25)
Push the R CMD button on the mode control panel.
S 745-201
(26)
Use the NEXT PAGE key on the CDU to show page 8 of the INPUT MONITORING.
S 745-202
(27)
Use the alphanumeric keys on the CDU to put "E/26/270/00" into the scratchpad.
S 745-203
(28)
Push the LSK 1L to move the data into the correct position.
S 745-204
(29)
Set and hold the alternate electric trim switches on the Pilots' Control Stand in the APL NOSE DN direction and do these steps:
(a)
Hold the alternate electric trim switches for 5 seconds.
(b)
Make sure that bit 14 for the ARINC word "E/26/270/00" is "1".
NOTE: (E/26/270/00, BIT 14) = UNSCHEDULED TRIM IND (SRM-R)
____
(c)
Use the NEXT PAGE key to show page 1 of the INPUT MONITORING.
(d)
Make sure that bit 23 for the ARINC word "E/53/350/00" is "0".
NOTE: (E/53/350/00, BIT 23) = SRM-R UNSCHEDULED TRIM SIGNAL ->
____
SRM-L INTERFACE FAIL
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747-400 MAINTENANCE MANUAL
S 865-205
(30)
Release the alternate electric trim switches.
S 865-206
(31)
Push the autopilot disconnect switch on the control wheel, two times, to disengage the autopilot and to cancel the aural/visual annunciations.
S 865-207
(32)
Stop for 30 seconds.
S 745-208
(33)
Make sure that bit 23 for the ARINC word "E/53/350/00" is "0".
NOTE: (E/53/350/00, BIT 23) = SRM-R UNSCHEDULED TRIM SIGNAL ->
____
SRM-L INTERFACE FAIL
S 745-209
(34)
Use the PREV PAGE key on the CDU to show page 8 of the INPUT MONITORING.
S 745-210
(35)
Make sure that bit 14 for the ARINC word "E/26/270/00" is "0".
NOTE: (E/26/270/00, BIT 14) = UNSCHEDULED TRIM IND (SRM-R)
____
G. Speed Trim Engage and Valid Trim Command Crossfeed Check
S 865-098
(1)
Remove the hydraulic pressure from the hydraulic systems No. 1, 2, 3 and 4 (AMM 29-11-00/201).
S 865-099
(2)
Set the FLT CONTROL HYD POWER TAIL 1, 2, 3, and 4 switches to the SHUTOFF position. These switches are on the Pilots' Overhead Maintenance Panel (P461).
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A 747-400 MAINTENANCE MANUAL
(3) S 865-100Set the FLT CONTROL HYD POWER WING 1, 2, 3, and 4 switches to the SHUTOFF position. These switches are on the Pilots' Overhead Maintenance Panel (P461).
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