(f)  
Make sure the BIT (DISCRETE) 2 shows a 0.

 I. ADC Data Bus Test
 S 735-612-001
 (1)  
Do the ADC data bus test that follows:

 (a)  
Make sure the air data computing system is operational (AMM 34-12-00/501).

 (b)  
Set the Captain's ADC Source Select switch to the NORM position.

 (c)  
Push and hold the left air data computer switch on the P61 test panel for more than 7 seconds.

 (d)  
Set the SUBFRAME and WORD for each signal as shown in the ADC DATA BUS table. ~....................................................... | ADC DATA BUS SIGNAL TEST | ......................................................... | | TESTER SETUP | | | SIGNAL ........................... TESTER | | | SUBFRAME | WORD | DISPLAY | ......................................................... | ALTITUDE | 0 | 23 | 0471 | | | | | | | AIRSPEED | 0 | 22 | 1044 | 2..............…............…............…..............1

 (e)  
Set the captain's ADC source select switch to the ALTN position.

 (f)  
Push and hold the right air data computer switch on the P61 test panel for more than 7 seconds.

 (g)  
Set the SUBFRAME and WORD for each signal as shown in the ADC DATA BUS table.

 (2)  
Set the Capt's ADC select switch to the NORM position.

 S 865-896-001
 
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757 MAINTENANCE MANUAL
 J. Captain's FMC Switch Position Test
 S 735-614-001
 (1)  Do the FMC switch test that follows:
 (a)  
Make sure the flight management computer system is operational (AMM 34-61-00/501).

 (b)  
On the tester, set the SUBFRAME to 2 and the WORD to 32.

 (c)  
Set the Captain's FMC source select switch to the NORM position.

 (d)  
Make sure the BIT (DISCRETE) 1 shows a 1.

 (e)  
Set the captain's FMC source select switch to the ALTN position.

 (f)  
Make sure the BIT (DISCRETE) 1 shows a 0.

 S 865-869-001
 (2)  Set the captain's FMC select switch to the NORM position.
 K. Captain's IRS Switch Position Test
 S 735-616-001
 (1)  Do the IRS switch test that follows:
 (a)  
Make sure the inertial reference system is operational (AMM 34-21-00/501).

 (b)  
On the tester, set the SUBFRAME to 3 and the WORD to 32.

 (c)  
Set the Captain's IRS source select switch to the NORM position.

 (d)  
Make sure the BIT (DISCRETE) 2 shows a 1.
　
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