* SEE WDM EQUIPMENT LIST 
Instrument Landing System - Component Index 
Figure 101 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
 34-31-00
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 ú  07  Page 101 
 ú  Feb 18/01 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
K65204
A 
747-400 FAULT ISOLATION/MAINT MANUAL 
COMPONENT  SHT 102 FIG.  QTY  ACCESS/AREA  REFERENCE  
RELAY - (REF 31-01-39, FIG. 101) 
 NO. 1 AIR/GND, R983 
 NO. 2 AIR/GND, R768 
 NO. 3 AIR/GND, R769 
NO. 4 AIR/GND, R7365  
NO. 5 AIR/GND, R7366  
NO. 6 AIR/GND, R226  
RELAY - (REF 34-61-00, FIG. 101)  
NO. 1 FMC MASTER SW, R7229 
 NO. 2 FMC MASTER SW, R7230 
 NO. 3 FMC MASTER SW, R7231  
RESISTOR - C ILS TUNING SOURCE SELECT, M4531  1  117AL, MAIN EQUIP CTR, E1-3  *  
RESISTOR - L ILS TUNING SOURCE SELECT, M4528  1  117AL, MAIN EQUIP CTR, E1-2  *  
RESISTOR - R ILS TUNING SOURCE SELECT, M4529  1  117AL, MAIN EQUIP CTR, E1-4  *  
SWITCH - C G/S ANT, B119  2  1  AREA BETWEEN NOSE GEAR WELL AND FUSELAGE, LH, P31  34-31-06  
SWITCH - C VOR/LOC ANT, B299  2  1  117AL, MAIN EQUIP CTR, E1-6  34-31-05  
SWITCH - L G/S ANT, B404  2 1  AREA BETWEEN NOSE GEAR WELL AND FUSELAGE, LH, P31  34-31-06  
SWITCH - L VOR/LOC ANT, B63  2  1  117AL, MAIN EQUIP CTR, E1-6  34-31-05  
SWITCH - R G/S ANT, B405 2 1  AREA BETWEEN NOSE GEAR WELL AND FUSELAGE, LH, P31  34-31-06  
SWITCH - R VOR/LOC ANT, B64  2 1  117AL, MAIN EQUIP CTR, E1-6  34-31-05  
UNIT - (REF 31-61-00, FIG. 101)  
C EFIS/EICAS INTERFACE, M7352 
 L EFIS/EICAS INTERFACE, M7353 
 R EFIS/EICAS INTERFACE, M7351 
UNIT - (REF 32-61-00, FIG. 101) 
 PROXIMITY SWITCH ELECTRONIC, M7838  
UNIT - (REF 34-61-00, FIG. 101)  
C CONTROL DISPLAY, M7441 
 L CONTROL DISPLAY, M7439 
 R CONTROL DISPLAY, M7440 
* SEE WDM EQUIPMENT LIST 
Instrument Landing System - Component Index 
Figure 101 (Sheet 2)
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