(b)  
Set the HDG select switch to the TRUE position.

 NOTE: The HDG select switch is on the P2 pilot's center
____
 instrument panel.

 (c)  
Make sure 0 shows for bit position 25.

 (d)  
Set the HDG select switch to the NORM position.

 (e)  
Make sure 1 shows for bit position 25.

 (f)  
Set the captain's ADC select switch to the R position.

 NOTE: The captain's ADC select switch is on the P1 captain's
____
 main instrument panel.

 (g)  
Make sure 0 shows for bit position 23.

 (h)  
Set the captain's ADC select switch to the C position.

 (i)  
Make sure 1 shows for bit position 23.

 (j)  
Set the captain's ADC select switch to the L position.

 (k)  
Make sure 1 shows for bit position 23.

 (l)  
Set the first officer's ADC select switch to the L position.

 NOTE: The first officer's ADC select switch is on the P3 first
____
 officer's main instrument panel.

 (m)  
Make sure 0 shows for bit position 22.

 (n)  
Set the first officer's ADC select switch to the C position.

 (o)  
Make sure 1 shows for bit position 22.

 (p)  
Set the first officer's ADC select switch to the R position.

 (q)  
Make sure 1 shows for bit position 22.

 (r)  
Set the captain's NAV select switch to the CDU C position.

 NOTE: The captain's NAV select switch is on the P1 captain's
____
 main instrument panel.

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A 747-400 MAINTENANCE MANUAL
 (s) (t) (u) (v) (w) (x) (y) (z)  Make sure 0 shows for bit position 20.Set the captain's NAV select switch to the CDU L position.Make sure 0 shows for bit position 20.Set the captain's NAV select switch to the FMC R position.Make sure 0 shows for bit position 20.Set the captain's NAV select switch to the FMC L position.Make sure 1 shows for bit position 20.Set the first officer's NAV select switch to the CDU C.
 NOTE:____ The first officer's NAV select switch is on the P3 first officer's main instrument panel.

 (aa) Make sure 0 shows for bit position 21.
 (ab) Set the first officer's NAV select switch to the CDU R position.
 (ac) Make sure 0 shows for bit position 21.
 (ad) Set the first officer's NAV select switch to the FMC L
 position.
 (ae) Make sure 1 shows for bit position 21.
 (af) Set the first officer's NAV select switch to the FMC R position.
 (ag) Make sure 0 shows for bit position 21.
 S 865-295
 (16) Prepare the INPUT MONITORING page to monitor E/42/147/00:
 NOTE:____ Label 147 monitors these inputs:
 - Datalink program pin
 - ATS program pin

 -GPS program pin
 (a)  
Push E/42/147/00 on the scratchpad for the center CDU.

 (b)  
Push the necessary LSK to show E/42/147/00 below the PORT LBL SDI indication. 1) Make sure SAMPLE shows intermittently below E/42/147/00.

 S 865-288
 (17) Do the input check for label 147:
 (a)  
Make sure 1 shows for bit position 27.

 (b)  
Make sure 1 shows for bit position 28.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (c)  Make sure 1 shows for bit position 29.
 J.  Right Flight Management Computer Digital Input Checks
 S 845-166
 (1)  
Show the INPUT MONITORING page on the center CDU (AMM 45-10-00/201).

 S 865-167

 (2)  
　
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