(o)  
Open these circuit breakers:

 1)  P7 Overhead Circuit Breaker Panel a) 7A10, ADC L PWR b) 7J15, ADC C PWR

 (p)  
Close this circuit breaker:

 1)  P7 Overhead Circuit Breaker Panel a) 7A14, ADC R PWR

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

 (r)  
Set the first officer's IRS source select switch to the C position. 1) Make sure that the vertical speed scale on the far right

 side of the captain's PFD comes into view.

 (s)  
Set the captain's IRS source select switch to the C position.

 1)  Make sure that the vertical speed scale on the far right side of the captain's PFD comes into view.

 (t)  
Set the first officer's IRS source select switch to the L position. 1) Make sure that the vertical speed scale on the far right

 side of the captain's PFD comes into view.
 J.  RMI Interface Test (AIRPLANES WITH RMI)
 S 865-050
 (1)  
Set the HDG switch on the EICAS Select/FMC Switch panel (P2-4) to the NORM position.

 S 865-051

 (2)  
Set the IRS switch on the first officer's source select panel to the R position.

 (3)  
Close the 7A8 NAV RADIO RMI circuit breaker on the P7 panel.

 S 865-052
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A 747-400 MAINTENANCE MANUAL
 (4)  S 755-165Make sure that the heading flag is removed from the captain's RMI.
 (5)  S 865-316AIRPLANES WITH LITTON IRS; Set the center IRU into the Ground Test mode with the CMC.
 (6)  S 865-266AIRPLANES WITH HONEYWELL IRS; Set the center IRU into the Ground Test mode with the CMC.
 NOTE:____ One more way is to push and hold the test button on the front of the middle IRU.
 (7)  S 865-169Set the IRS switch on the first officer's source select panel to the C position. (a) Make sure that the heading card on the RMI shows 15 degrees.
 (8)  S 865-199Set the HDG switch on the P2-4 panel to the TRUE position. (a) Make sure that the heading card on the RMI shows 10 degrees.
 (9)  S 865-171Set the IRS switch on the first officer's source select panel to the L position. (a) Make sure that the heading card on the RMI shows 10 degrees.
 NOTE:____ The CMC started IRU interface test continues for 30 seconds. After 30 seconds the RMI heading card will show the correct airplane heading.
 If you use the other procedure, release the test button on the front of the IRU.

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A
747-400 MAINTENANCE MANUAL
 S 865-172
 (10)
 Set the HDG switch on the P2-4 panel to the NORM position.

 S 865-173

 (11)
 Set the IRS switch on the first officer's source select panel to the R position.

 K. IRS ON BAT Warning Test
 S 865-054
 (1)  
Close the 414N24 IRS GND SVCE LOGIC circuit breaker on the P414 panel.

 S 865-055

 (2)  
Close the 180M3 IRS ON BAT circuit breaker on the P180 panel.

 (a)  
Make sure that the IRS ON BAT annunciator on the P461 Overhead Panel does not come on.

 (b)  
Make sure that the ground crew call horn in the nose gear wheel well does not operate.

 S 865-174
 (3)  Open the 6D7 IRS AC LEFT circuit breaker on P6 panel.
 (a)  
Make sure that the IRS ON BAT annunciator on the P461 Overhead Panel does not come on.

 (b)  
Make sure that the ground crew call horn in the nose gear wheel well does not operate.

 S 865-175
 (4)  Open the 414N24 IRS GND SVCE LOGIC circuit breaker on the P414 panel.
 (a)  
Make sure that the IRS ON BAT annunciator on the P461 panel comes on.

 (b)  
　
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