D. Fuel Quantity Indicator Module (FQIM) (Fig. 5)_____________________________________
(1)
A fuel quantity indicator module (FQIM) is installed on the overhead panel, P5. It supplies digital liquid crystal displays of individual tank, and total fuel quantities; and fuel temperature.
(2)
The FQIM is contained in an aluminum housing with a front panel which has high contrast, dual-cell liquid crystal displays (LCD). The FQIM's electronic circuits use a "brickwall architecture" to prevent a failure in one display from affecting the operation of the other fuel tank displays.
(3)
28V dc is supplied to the FQIM from the P11 circuit breaker panel through the processor (FQPU). 5V ac for internal lighting is supplied from the aircraft lighting circuits.
NOTE: There is a BRIGHT(BRT)/DIM switch (S3) on the Flight Deck,
____ Overhead Panel (P5). The BRT/DIM switch supplies "Bright" override for the panel light of the FQIM, when the "IND LTS" is put in the "Bright" mode. The BRT/DIM switch improves the visibility of the FQIM in daylight.
E. FUEL QTY Test Switch (Fig. 5)____________________
(1) The FUEL QTY test switch is found on the right side panel, P61 in the flight compartment.
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A
757
MAINTENANCE MANUAL
OVERHEAD CIRCUITFUEL QUANTITY BREAKER PANEL, P11
INDICATING MODULE, M10054 SEE A
OVERHEAD
MISCELLANEOUS TEST
PANEL, P5 PANEL, M10398 (REF) SEE B
EICAS MAINTENANCE PANEL
SEE C
RIGHT SIDE
PANEL, P61
FLIGHT COMPARTMENT
TEST
AIR DATA CONFIG
L CMPTR R T/O GND PROX
LCR L STALL R LDG INOP
WING DUCT YAW DMPR EQUIP COOL 1
ANTI ICE LEAK L FWD
1
1 FUEL QTY X 1000
TEMP `C
TOTAL WINDOW/ FUEL R AFT PROBE HEAT QTY
FUEL QUANTITY FUEL QUANTITY INDICATING MODULE, M10054 TEST SWITCH, S6
MISCELLANEOUS TEST PANEL, M10398 (REF)
A (EXAMPLE PANEL SHOWN)
B
EICAS MAINT ECS MSG DISPLAY SELECT EVENT
AUTO MAN SWITCH
READ ECS ELEC
PERF MSG HYD
APU REC ERASE
TEST CONF ENG
EPCSMCDP EXCD
EICAS MAINTENANCE PANEL
C
1
THE UNITS ARE IN LBS OR KGS.
Fuel Quantity Indicating Module (FQIM) Figure 5
A08348
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