(a)  
P7 Overhead Circuit Breaker Panel
 1) 7G23 BODY GR STRG ARM AC
 2) 7G24 BODY GR STRG ARM DC

 S 864-021
 (5)  
Make sure that the tillers of the captain and the first officer are in the neutral position.

 (6)  
Make sure that the rudder pedals are in the neutral position.

 S 864-022
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400
MAINTENANCE MANUAL

 S 864-023
 (7)  
Make sure that the EIU source is set to AUTO for the EFIS/EICAS display.

 S 864-024

 (8)  
Make sure that the hardware that follows is serviceable:

 (a)  
EIU

 (b)  
EICAS

 (c)  
PSEU

 (d)  
CMC

 S 214-025
 (9)  
Make sure that the steering actuators of the body landing gear are retracted.

 S 744-026

 (10)
 Do a BITE test with the tiller in the neutral position.

 (a)  
Push OTHER FUNCTIONS on page 2 of the CDU main menu.

 (b)  
Push INPUT MONITORING.

 (c)  
Write in C/026/005/10 on the CDU scratchpad.

 (d)  
Push key 1L of the line select.

 (e)  
Make sure that bit 15 of label 005 is a 0 (no pressure to the pressure switch for the left body landing gear).

 (f)  
Push the NEXT PAGE button.

 (g)  
Write in C/026/004/01 on the CDU scratcpad.

 (h)  
Push key 1L of the line select.

 (i)  
Make sure that bit 15 of label 004 is a 0 (no pressure to the pressure switch for the right body landing gear).

 S 864-027
 (11) Move the tiller of the captain clockwise until the nose gear angle on the decal reads 21 to 21.25 degrees.
 NOTE: The decal is found on the steering collar on the nose landing
____
 gear.

 S 744-028
 (12)
 Do a BITE test with the tiller moved for a right turn.

 (a)  
Make sure that bit 15 of label 004 is a 1 (pressure to the pressure switch for the right body landing gear).

 (b)  
Push the PREVIOUS PAGE button.

 (c)  
Make sure that bit 15 of label 005 is a 1 (pressure to the pressure switch for the left body landing gear).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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747-400 MAINTENANCE MANUAL
 S 864-029
 (13) Move the tiller of the captain counterclockwise until the nose gear angle on the decal reads 21 to 21.25 degrees.
 NOTE:  The decal is found on the steering collar of the nose landing gear.
 S 744-030
 (14)
 Do a BITE test with the tiller moved for a left turn.

 (a)  
Make sure that bit 15 of label 004 is a 1 (pressure to the pressure switch for the right body landing gear).

 (b)  
Push the PREVIOUS PAGE button.

 (c)  
Make sure that bit 15 of label 005 is a 1 (pressure to the pressure switch for the left body landing gear).

 S 864-031
 (15)
 Put the tiller of the captain in the neutral position.

 S 744-032

 (16)
 Do a BITE test with the tiller in the neutral position.

 (a)  
Make sure that bit 15 of label 005 is a 0 (no pressure to the pressure switch for the left body landing gear).

 (b)  
Push NEXT PAGE.

 (c)  
Write in C/026/004/01 on the CDU scratchpad.

 (d)  
Push line select key 1L.

 (e)  
Make sure that bit 15 of label 004 is a 0 (no pressure to the pressure switch for the right body landing gear).

 H.
Put the Airplane in its Usual Position

 S 864-033
 (1)
Remove the hydraulic power from system No. 1 (AMM 29-11-00/201).
　
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