1)  P7 Overhead Circuit Breaker Panel a) 7B9 NAV RADIO ADF L b) 7B20 NAV RADIO ADF R

 (b)  
On the CDU, place controls as desired.

 (c)  
Set the mode select switch on Capt's EFIS control panel to MAP position.

 (d)  
Set VOR/ADF switches to ADF position on Capt's EFIS control panel.

 (e)  
On Capt's source select panel, set the EIU select switch to AUTO position.

 (f)  
On ACP, set the VOICE/RANGE selector switch to B (Both) position.

 (g)  
If applicable, on audio control panels, adjust ADF volume and listen for selected station.

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A
747-400 FAULT ISOLATION/MAINT MANUAL
ADF SYSTEMS
COMPONENT  102 SHT FIG.  QTY  ACCESS/AREA  REFERENCE AMM 
ANTENNA - LEFT ADF, B95  2  1  TOP OF FUSELAGE  34-57-02 
ANTENNA - RIGHT ADF, B91  2  1  TOP OF FUSELAGE  34-57-02 
CIRCUIT BREAKER - 1  FLT COMPT, P7 
NAV ADF LEFT, C766  1  7B9  * 
NAV ADF RIGHT, C767 1  7B20  * 
COMPUTER - (FIM 45-10-00/101) 
LEFT CMC, M7373
COMPUTER - (FIM 31-61-00/101) 
FLIGHT MANAGEMENT LEFT, M7442
 FLIGHT MANAGEMENT RIGHT, M7443
DISPLAY - (FIM 31-61-00/101) 
LEFT NAVIGATION, M7350
 RIGHT NAVIGATION, M7440 
RECEIVER - LEFT ADF, B87  2  1  125B, CTR EQUIP CTR, E9  34-57-01 
RECEIVER - RIGHT ADF, B88 2  1  125B, CTR EQUIP CTR, E9  34-57-01 
RELAY - (FIM 32-09-00/101) 
AIR/GND ALTERNATE 1, R7365
 AIR/GND ALTERNATE 2, R7366
 AIR/GND PRIMARY 1, R983
 AIR/GND PRIMARY 2, R768 
RELAY - (FIM 34-61-00/101) 
FMC MASTER SWITCHING 1, R7229
 FMC MASTER SWITCHING 2, R7230
UNIT - (FIM 23-51-00/101) 
AUDIO MANAGEMENT, B7438
UNIT - (FIM 31-61-00/101) 
CENTER EFIS/EICAS INTERFACE, M7352
 LEFT EFIS/EICAS INTERFACE, M7353
 RIGHT EFIS/EICAS INTERFACE, M7351
UNIT - (FIM 31-61-00/101)
 LEFT CONTROL DISPLAY, M7439
 RIGHT CONTROL DISPLAY, M7440 

* SEE THE WDM EQUIPMENT LIST
ADF Systems - Component Index
Figure 101

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747-400 FAULT ISOLATION/MAINT MANUAL

FLIGHT COMPARTMENT

LEFT OR RIGHT CDU, M7439 OR M7440 (REF)

ADF System - Component Location Figure 102 (Sheet 1)
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747-400 FAULT ISOLATION/MAINT MANUAL
LEFT ADF ANTENNA, B95 RIGHT ADF ANTENNA, B91 (STA 1300) (STA 1340)
SEED  SEED
RIGHT ADF 
RECEIVER, 
E9  B87 
CENTER EQUIPMENT  RACK  SEE  E 
CENTER (E6,E9) CSEE  HATCH 125B  RECEIVER, LEFT ADF 
B88 
SEE  E 

FWD CENTER EQUIPMENT CENTER C
FWD
LEFT OR RIGHT
ADF ANTENNA,
B95 OR B91

D

ADF System - Component Location
Figure 102 (Sheet 2)

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