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MAINTENANCE MANUAL

 S 745-123
 (25) Set and hold the alternate electric trim switches on the Pilots' Control Stand in the APL NOSE UP direction and do these steps:
 (a)  Make sure that bit 22 for the ARINC word "E/26/350/00" is "0".
 NOTE: (E/26/350/00, BIT 22) = SRM-L VALID TRIM COMMAND SIGNAL
____
 -> SRM-R INTERFACE FAIL

 (b)  
Use the PREV PAGE key on the CDU to show page 1 of the INPUT MONITORING.

 (c)  
Make sure that bit 22 for the ARINC word "E/53/350/00" is "0".

 NOTE: (E/53/350/00, BIT 22) = SRM-R VALID TRIM COMMAND SIGNAL
____
 -> SRM-L INTERFACE FAIL

 S 865-124
 (26)
 Release the alternate electric trim switches.

 S 745-125

 (27)
 Make sure that bit 22 for the ARINC word "E/53/350/00" is "0".

 NOTE: (E/53/350/00, BIT 22) = SRM-R VALID TRIM COMMAND SIGNAL ->
____
 SRM-L INTERFACE FAIL

 S 745-126
 (28)
 Use the NEXT PAGE key on the CDU to show page 5 of the INPUT MONITORING.

 S 745-127

 (29)
 Make sure that bit 22 for the ARINC word "E/26/350/00" is "0".

 NOTE: (E/26/350/00, BIT 22) = SRM-L VALID TRIM COMMAND SIGNAL ->
____
 SRM-R INTERFACE FAIL

 H. Autotrim Engage ARM and CONTROL Crossfeed Check
 S 745-128
 (1)  
Push the LSK adjacent to <OTHER FUNCTIONS from the CMC MENU page 2/2 on the CDU.

 S 745-129

 (2)  
Push the LSK adjacent to <INPUT MONITORING from the OTHER FUNCTIONS MENU page on the CDU.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 S 745-130

 (3)  Use the alphanumeric keys on the CDU to put "E/53/350/00" into the
 scratchpad.
 S 745-131
 (4)  Push the LSK 1L to move the data into the correct position.
 S 745-132
 (5)  Make sure that bits 17 and 16 for the ARINC word "E/53/350/00" are
 "0".
 NOTE:____ (E/53/350/00, BIT 17) = SRM-R AUTOTRIM ENGAGE-CONT SIGNAL->
 SRM-L INTERFACE FAIL
 (E/53/350/00, BIT 16) = SRM-R AUTOTRIM ENGAGE-ARM SIGNAL ->
 SRM-L INTERFACE FAIL

 S 745-133
 (6)  
Use the NEXT PAGE key on the CDU to show page 2 of the INPUT MONITORING.

 S 745-134

 (7)  
Use the alphanumeric keys on the CDU to put "E/53/350/01" into the scratchpad.

 S 745-135

 (8)  
Push the LSK 1L to move the data into the correct position.

 S 745-136

 (9)  
Make sure that bits 21, 19, 18 and 16 for the ARINC word "E/53/350/01" are "0".

 NOTE: (E/53/350/01, BIT 21) = FCC-L -> SRM-L DATA FAIL
____ (E/53/350/01, BIT 19) = FCC-C -> SRM-L DATA FAIL
 (E/53/350/01, BIT 18) = FCC-L -> SRM-L BUS FAIL
 (E/53/350/01, BIT 18) = FCC-C -> SRM-L BUS FAIL
 S 745-137
 (10) Use the NEXT PAGE key on the CDU to show page 3 of the INPUT MONITORING.
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 S 745-138
 (11)
 Use the alphanumeric keys on the CDU to put "E/53/350/10" into the scratchpad.

 S 745-139

 (12)
 Push the LSK 1L to move the data into the correct position.

 S 745-140

 (13)
 Make sure that bits 13 and 12 for the ARINC word "E/53/350/10" are "0".
　
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