* SEE THE WDM EQUIPMENT LIST ____THE (X) BELOW THE ACCESS/AREA REFERS TO THE VIEW SHOWN ON FIG. 102. THIS HELPS YOU FIND THE
NOTE:COMPONENTS ON THE ILLUSTRATION. FOR EXAMPLE, (A) REFERS TO VIEW A. 
Center Equipment Panel, P54 - Component Index 
Figure 101 (Sheet 1)
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COMPONENT  SHT 102 FIG.  QTY  ACCESS/AREA  REFERENCE  
RELAYS - 121, CENTER EQUIP, P54  
R7392  3  1  (C)  *  
R7417  2  1  (B)  *  
R7418  2  1  (B)  *  
R7513  3  1  (C)  *  
R7515  2,3  1  (B),(C)  *  
R7650  3  1  (C)  *  
R7651  3  1  (C)  *  
R7652  2,3  1  (B),(C)  *  
R7653  2,3  1  (B),(C)  *  
R8115  3  1  (C)  *  
R8116  2  1  (B)  *  
R8117  2  1  (B)  *  
R8118  2  1  (B)  *  
TERMINAL BLOCKS - 121, CENTER EQUIP, P54  
TB390 2  1  (B)  *  
TD507  (B) *  
TRANSFORMER - 121, CENTER EQUIP, P54  
T73  2  1  (B)  * 
* SEE THE WDM EQUIPMENT LIST 
____NOTE: THE (X) BELOW THE ACCESS/AREA REFERS TO THE VIEW SHOWN ON FIG. 102. THIS HELPS YOU FIND THE COMPONENTS ON THE ILLUSTRATION. FOR EXAMPLE, (A) REFERS TO VIEW A. 
Center Equipment Panel, P54 - Component Index 
Figure 101 (Sheet 2)
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P54 PANEL
Center Equipment Panel, P54 - Component Location 
Figure 102 (Sheet 1)
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747-400 
FAULT ISOLATION/MAINT MANUAL
TD507 
R113 
THIS ROW CONTAINS: R640 R641 R859 R7417 R7418 R7513 R7515 R7652 R7653 R8116 R8117 R8118
TB390 
P54 PANEL 
(BACK)
Center Equipment Panel, P54 - Component Location (Detail from Sht 1) 
Figure 102 (Sheet 2)
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THIS ROW CONTAINS: R372 R373 R374 R376 R699 R7650 R7651 R7652 
R367 R368 R371 R375 R379 R380 R7653 
P54 PANEL (INSIDE UPPER) 
TB390 (REF)THIS ROW CONTAINS: R7126 R7650 R7651 
THIS ROW CONTAINS: R638 R639 R7515 
THIS ROW R8115 
CONTAINS: 
R361 
R362 
R365 
R366 
R369 
R370 
R7391
Center Equipment Panel, P54 - Component Location (Detail from Sht 1) 
Figure 102 (Sheet 3)
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