(e)  
Make sure these results occur: 1) The G/S deviation pointer on the PFD's and the ND's moves two dots above the glide path.

 2)  The glide path deviation pointer on the standby attitude/ILS indicator shows two dots above the glide path.

 (f)  
Open this circuit breaker:

 1)  P7 Overhead Circuit Breaker Panel a) 7B17 NAV RADIO MMR R

 (g)  
Make sure these results occur: 1) The source receiver annunciation on the first officer's ND changes to ILS C.

 2)  The G/S deviation pointer on the first officer's PFD and ND does not move.

 (h)  
Adjust the output of the ramp test set to supply a signal that is on-course. 1) Make sure the G/S deviation pointer on the first officer's

 PFD and ND shows on the glide path.

 (i)  
Adjust the output of the ramp test set to supply a signal that is two dots above the glide path. 1) Make sure the G/S deviation pointer on the first officer's

 PFD and ND shows two dots above the glide path.

 (j)  
Close this circuit breaker:

 1)  P7 Overhead Circuit Breaker Panel a) 7B17 NAV RADIO MMR R

 (k)  
Make sure the source receiver annunciation on the first officer's ND changes to ILS R.

 M.  Glide Slope Antenna Switching and EIU Discrete Interface Test
 S 735-247
 (1)  Do the glide slope antenna switching and EIU discrete interface test:
 (a)  Use the ramp test set to supply a signal that is on the glide path. 1) Make sure the G/S deviation pointer on the PFDs and the NDs
 shows on the glide path.
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 (b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

A
747-400 MAINTENANCE MANUAL
 2) Make sure the glide path deviation pointer on the standby
 attitude/ILS indicator shows on the glide path.Install the landing gear door locks 7MIT65B04012 (Ref 32-00-30/201).Put aluminum foil tape on the two glide slope track antennas (B559 and B561) to cause a blockage of the test signal.If aluminum foil tape is not available, do these three steps: 1) Disconnect the DB404A connector from the B404 L G/S ANT SW
 RLY on the P31 panel. 2) Disconnect the DB405A connector from the B405 R G/S ANT SW RLY on the P31 panel. 3) Disconnect the DB119A connector from the B119 C G/S ANT SW
 RLY on the P31 panel.Make sure all G/S deviation pointers are out of view.Close these circuit breakers: 1) P7 Overhead Circuit Breaker Panel
 a) 7D22 ILS ANT SW L
 b) 7D24 ILS ANT SW R
 c) 7D23 ILS ANT SW C

Put a proximity sensor actuator P/N A27092-31 against the nose
 gear up primary proximity sensor (S396) in the wheel well for
 the nose gear.
Put a proximity sensor actuator P/N A27092-31 against the nose
 gear up alternate proximity sensor (S411) in the wheel well for
 the nose gear.
Make sure these results occur:
 1) The PFDs and the NDs show the test frequency.
 2) ILS L shows on the captain's ND as the source receiver.
 3) ILS R shows on the first officer's ND as the source

 receiver. 4) The G/S deviation pointer on the PFDs and the NDs shows on the glide path. 5) The glide path deviation pointer on the standby
 attitude/ILS indicator shows on the glide path.Open these circuit breakers: 1) P7 Overhead Circuit Breaker Panel
 a) 7D22 ILS ANT SW L
 b) 7D24 ILS ANT SW R
 c) 7D23 ILS ANT SW C

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A 
747-400 
MAINTENANCE MANUAL
 (k)  Make sure these results occur:
 1) The caution message ILS ANTENNA shows on the main EICAS
 display.
 2) The status messages G/S ANTENNA L, G/S ANTENNA R, and G/S
　
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