(5)
Get access to the faults for the fuel system on the main control display unit (MCDU).
NOTE: If it is necessary, use the CDU NEXT PAGE or PREV PAGE
____
keys to find the data.
(a)
Set the CMC on the MCDU menu.
(b)
Set the EXISTING FAULTS on the MCDU.
(c)
Set the 28 FUEL on the MCDU
(6)
Make sure that these messages are not on.
S 714-016
NOTE: If it is necessary, use the CDU NEXT PAGE or PREV PAGE
____
keys to find the data.
(a)
28667 FUEL SYSTEM EICAS INTERFACE MAIN CARD FAIL
(b)
28668 FUEL SYSTEM EICAS INTERFACE SLAVE CARD FAIL
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A
747-400 MAINTENANCE MANUAL
FUEL SYSTEM CARD FILE - REMOVAL/INSTALLATION
____________________________________________
1. General_______
A. This procedure contains two tasks. The first task removes the fuel system card file, M7852. The second task installs the fuel system card file.
TASK 28-22-16-004-038
2. Fuel System Card File Removal (Fig. 401)_____________________________
A. References
(1)
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices
(2)
AMM 28-16-08/401, Reserve Tank Transfer Single Point Sensor Control Card
(3)
AMM 28-22-13/401, Fuel System Management Card
(4)
AMM 28-22-14/401, Valve Position Logic Card
(5)
AMM 28-22-15/401, Fuel System EICAS Interface Cards Main and Slave
(6)
AMM 28-31-15/401, Fuel Jettison Control Card
(7)
AMM 28-31-17/401, Fuel Jettison Single Point Sensor Control Card
B.
Access
(1)
Location Zone 115 Area Between Nose Gear Well and Fuselage, Left
C.
Procedure
S 864-003
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
On the main power distribution panel, P6: 1) 6C17, FUEL JTSN CONT B 2) 6C18, JTSN NOZZLE VLV CONT R 3) 6D05, FUEL QTY 1 4) 6D06, FUEL QTY 2 5) 6D17, FUEL JTSN CONT A 6) 6D18, JTSN NOZZLE VLV CONT L 7) 6E17, CTR R & MAIN 2 JTSN VLV 8) 6F05, FUEL SYS MGMT CARD A 9) 6F06, FUEL SYS MGMT CH 1 10) 6F07, FUEL SYS MGMT CARD B 11) 6F08, FUEL SYS MGMT CH 2 12) 6F17, CTR L & MAIN 3 JTSN VLV 13) 6G01, FUEL SHUTOFF VALVE ENG 1 14) 6G02, FUEL SHUTOFF VALVE ENG 2 15) 6G03, FUEL SHUTOFF VALVE ENG 3 16) 6G04, FUEL SHUTOFF VALVE ENG 4 17) 6G05, FUEL SHUTOFF VALVE APU 18) 6L14, FUEL XFEED VALVE ENG 1 19) 6L15, FUEL XFEED VALVE ENG 2
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747-400
MAINTENANCE MANUAL
BONDING
JUMPER NUT
BONDING
JUMPER WASHER
ATTACHMENT
HARDWARE CARD FILE
CARD FILE FUEL SYSTEM ELECTROSTATIC GROUND JACK A-A
SEE A
WIRE BUNDLE
SUPPORT BRACKET
ALIGNMENT PIN (2 LOCATIONS) WASHER (8 LOCATIONS)
SCREW
(8 LOCATIONS)
A
BONDING WIRE BUNDLE
JUMPER A CONNECTOR
(8 LOCATIONS)
SCREW
WASHER
(4 LOCATIONS)
FUEL SYSTEM CARD FILE A Fuel System Card File Figure 401
E15935
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A
747-400 MAINTENANCE MANUAL
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