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747-400 MAINTENANCE MANUAL
 (c)  Or, ground the FJCC A and FJCC B jacks found on the front of the M7852 fuel system card file.
 NOTE: This procedure starts the BITE immediately.
____
 It is not necessary to stop.

 S 745-014
 (2)  
Make sure these EICAS messages do not show on the main EICAS display:

 (a)  
FUEL JETT SYS (CAUTION)

 (b)  
FUEL JETT A (ADVISORY)

 (c)  
FUEL JETT B (ADVISORY).

 S 865-017
 (3)  
Push the STAT button on the EICAS display select module.

 S 215-016

 (4)  
Make sure these EICAS messages do not show on the auxiliary EICAS display:

 (a)  
FUEL JETT A (STATUS)

 (b)  
FUEL JETT B (STATUS).

 S 865-005
 (5)  Get access to the CMC EXISTING FAULTS for the fuel system (AMM 45-10-00/201).
 NOTE: If it is necessary, use the CDU NEXT PAGE or PREV PAGE
____
 keys to find menu items.

 (a)  
Push the CDU MENU key to show the CDU MENU.

 (b)  
Push the CDU line-select key (LSK) adjacent to the EXISTING FAULTS on CMC MENU page 2.

 (c)  
Push the CDU LSK adjacent to 28 FUEL on the EXISTING FAULTS menu.

 S 745-015
 (6)  Read through EXISTING FAULTS MSG pages and make sure these CMC messages are not shown as active:
 NOTE: An asterisk to the left of the CMC current faults message
____
 shows the message is active.

 (a)  
28607 FJCC A - EIU BUS FAIL

 (b)  
28608 FJCC B - EIU BUS FAIL

 (c)  
28617 FQIS B > FJCC A BUS FAIL

 (d)  
28618 FQIS B > FJCC A BUS FAIL

 (e)  
28665 FUEL JETTISON CONTROL CARD A FAIL

 (f)  
28666 FUEL JETTISON CONTROL CARD B FAIL

 (g)  
28700 FJCC A POTENTIOMETER INPUT FAIL

 (h)  
28701 FJCC B POTENTIOMETER INPUT FAIL

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747-400 MAINTENANCE MANUAL
 F.  Put the Airplane Back to Its Usual Condition S 865-012
 (1) Remove electrical power if it is not necessary (AMM 24-22-00/201).
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747-400 MAINTENANCE MANUAL
 FUEL JETTISON SINGLE POINT SENSOR - REMOVAL/INSTALLATION
________________________________________________________
 1.  General_______
 A.  This procedure contains instructions to remove and install the fuel jettison single point sensors (SPS).
 B.  The single point sensors are found in the inboard main tanks at wing station 440.62, immediately aft of the midspar.
 C.  Access to the single point sensors is through fuel tank access door 544AB or 644AB.
 TASK 28-31-16-004-001
 2.  Fuel Jettison Single Point Sensor (SPS) Removal (Fig. 401)_______________________________________________
 A.  References
 (1)  
AMM 28-11-00/201, Fuel Tanks

 (2)  
AMM 28-26-00/201, Defueling

 (3)  
AMM 28-11-02/401, Reserve and Main Tank Access Doors

 (4)  
AMM 28-31-17/501, Fuel Jettison Single Point Sensor Control Card

 (5)  
AIPC 28-41-10, Fig. 1
　
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