S 424-009
(2)
Install the FSMC in the fuel system card file at the applicable location A5 or A10 (AMM 20-11-22/401).
NOTE: FSMC A and FSMC B are the same and can be installed at each
____
location.
S 864-006
(3)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
On the main power distribution panel, P6:
1) 6F05, FUEL SYS MGMT CARD A
2) 6F07, FUEL SYS MGMT CARD B
S 724-007
(4) Do this task: Fuel System Management Card (FSMC) Operational Test (AMM 28-22-13/501).
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747-400 MAINTENANCE MANUAL
FUEL SYSTEM MANAGEMENT CARD - ADJUSTMENT/TEST
_____________________________________________
1. General_______
A. This procedure contains instructions to do an operational test of the fuel system management cards, FSMC A and FSMC B. To start the BITE, stop power to the FSMC card for a minimum of five minutes, or ground the FSMC A or FSMC B jack on the front of M7852 fuel system card file.
B. The fuel system management cards (FSMC) go through a power up BITE test in the five seconds after you apply electrical power. A bad FSMC shows as a fuel system management card A fail or fuel system management card B fail CMC message. An FSMC A or FSMC B EICAS status message can also show a bad FSMC. But, these EICAS messages are also attached to EIU bus fail and FSEIC master bus fail CMC messages.
C. The FSMC power up BITE does a test of the FSMC random access memory (RAM), read only memory (ROM), processor, outputs in the off mode and outputs in the on mode. To do a check on the outputs in the on mode, it is necessary to start the logic to cause the output. The length of time to start the output is less than that necessary to operate the relays that drive the pumps and valves.
TASK 28-22-13-705-001
2. Fuel System Management Card (FSMC) Operational Test___________________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 28-22-16/401, Fuel System Card File
(3)
AMM 31-61-00/501, Intergrated Display System (IDS)
(4)
AMM 32-09-02/201, Air/Ground Relays
(5)
AMM 34-61-02/401, Control Display Unit
(6)
AMM 45-10-00/201, Central Maintenance Computer System
B.
Access
(1)
Location Zones
221 Control Cabin, Left
222 Control Cabin, Right
C.
Preconditions
S 865-010
(1)
These conditions are necessary for this tasK:
(a)
A specific fuel quantity is not necessary for this task.
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747-400 MAINTENANCE MANUAL
(b)
Electrical Power On (AMM 24-22-00/201).
(c)
Fuel System Card File serviceable (AMM 28-22-16/401).
(d)
Integrated Display System (IDS) serviceable (AMM 31-61-00/501).
(e)
Airplane must be in the ground mode (AMM 32-09-02/201).
(f)
CDU installed (AMM 34-61-02/401).
(g)
Central Maintenance Computer (CMC) serviceable (AMM 45-10-00/201).
D.
Procedure
S 865-002
(1)
Supply electrical power (AMM 24-22-00/201).
S 745-008
(2)
Use one of these two procedures to start the FSMC A and B BITE:
(a)
Open these circuit breakers:
1) P6, Main Power Distribution Panel a) 6F7, FUEL SYS MGMT CARD B b) 6F5, FUEL SYS MGMT CARD A
(b)
After five minutes, close these circuit breakers:
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