(a)
The processor does almost all fault detection on the FQIS automatically. The processor continuously does a test on the system and its components, while the FQIS functions. If a fault is found, an EICAS maintenance message, FUEL QTY BITE, is shown and the fault is kept in the computer memory for recall by the maintenance crew.
(b)
Faults are recorded by flight leg from the current flight leg
(0)
to 99. The transition from one flight leg to another is at the GND-AIR transition on airplane takeoff. Each time the flight leg changes from ground to air, all flight leg numbers are increased by one.
(c)
To recall faults from memory, operate the built-in-test controls on the front panel of the processor.
(d)
There are six primary BIT menu options on the processor. The six buttons on the processor are used to get access to the six menus. 1) PRESENT FAULTS menu - shows all present system faults. 2) FAULT HISTORY menu - shows past faults by flight leg (for a
minimum of 64 flight legs).
3) SYSTEM DATA menu - shows uplift, main and center fuel tank
data (fuel mass, density, volume, capacitance).
4) SELF TEST menu - does a test of the FQIS system.
5) SYSTEM CONFIG menu - shows the status of all six circuit
cards in the processor. 6) ERASE FAULT HISTORY menu - removes fault history for flight legs 11-64.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. GUN 011-999 ú
28-41-00
ú CONFIG ú 11 Page 30 ú Sep 28/00
A
757 FAULT ISOLATION/MAINT MANUAL
FUEL QUANTITY INDICATING SYSTEM
COMPONENT SHT 102 FIG. QTY ACCESS/AREA REFERENCE AMM
CANISTER - DENSITOMETER RETENTIONCIRCUIT BREAKER - 13 1 FLT COMPT, P6 631AB, CENTER FUEL TANK 28-41-00
FUELING QTY, C1045 CIRCUIT BREAKER - 1 6E4 FLT COMPT, P11 *
FUEL QTY - 1, C1048 1 11C34 *
FUEL QTY - 2, C1053 CIRCUIT BREAKER - 1 11L19 119BL, MAIN EQUIP CTR, P34 *
FUEL QTY, C1040 1 34A10 *
COMPENSATOR - CENTER TANK, TS5010 9 1 631AB, CENTER FUEL TANK 28-41-02
COMPENSATOR - L MAIN TANK, TS108 9 1 541AB, L MAIN FUEL TANK 28-41-02
EICAS L, M10181 EICAS R, M10182 COMPENSATOR - R MAIN TANK, TS119 COMPUTER - (FIM 31-41-00/101) 9 1 641AB, R MAIN FUEL TANK 28-41-02
DENSITOMETER - CENTER TANK, M10138 13 1 R WHEEL WELL 28-41-03
DENSITOMETER - L MAIN TANK, M596 13 1 L WHEEL WELL 28-41-03
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本文鏈接地址：757 AMM 飛機(jī)維護(hù)手冊(cè) 燃油 CHAPTER 28 - FUEL 4(122)
