(2)
APU N1 and N2 rotor speeds are displayed by digital readouts in units of percent rpm.
(3)
APU oil quantity is displayed by a digital readout in scaled units
(1.00 = 100% full). For quantity less than 0.5, a RF (refill) message is displayed. For quantity less than 0.22, a LO (low quantity) message is displayed.
F. Oxygen Pressure
(1) Crew and passenger oxygen pressures are displayed by digital readouts in units of psi.
G. Main Battery Data
(1)
Main battery voltage is shown by digital readouts in units of volts.
(2)
Main battery current is shown by digital readouts in units of amps and a message to show charge or discharge status.
H. APU Battery Data
(1)
APU battery voltage is shown by digital readouts in units of volts.
(2)
APU battery current is shown by digital readouts in units of amps and a message to show charge or discharge status.
I. Status Message Display
(1)
Up to eleven status messages may be displayed at one time. A page number message is displayed below the message field to indicate a page overflow condition. If an overflow condition exists, status messages can be paged by pressing the STAT switch on the EICAS DSP. If only a single page of status messages exist, and the STAT switch is depressed, the status format will be de-selected.
(2)
A STATUS cue is displayed below the message list on the EICAS primary format when a new status condition occurs. This cue is reset when the status format is selected or will self-clear when the condition which initiated the cue self-clears.
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MAINTENANCE MANUAL
12. EICAS Synoptic Displays_______________________
A. General
(1)
Synoptics display a graphic presentation of system operational status. The synoptic display configurations are similar to the overhead panel representation for the respective system.
(2)
These display formats provide supplementary information to the flight crew and are not required for airplane dispatch.
(3)
Synoptic pages are displayed on the auxiliary DU and are selected for display through the EICAS DSP.
(4)
The following systems may be represented by an EICAS synoptic display:
Fuel
ECS
Hydraulic
Electrical
Doors
Gear
B. EICAS Fuel Synoptic Display (Fig. 41)
(1) General
(a)
The fuel synoptic display presents graphic views and parameters for fuel quantity, total fuel, fuel temperature, crossfeed valve position, pump status, main tank to engine flow, fuel management, jettison flow and engine suction flow.
(b)
Fuel flow from tank to engine is indicated by the display of green colored flow segments within the respective fuel line and pump symbology.
(c)
Fuel management between tanks is indicated by the display of directional flow bars located between the transferring tanks. The flow bars are displayed only when the associated fuel transfer valve is open.
(d)
Jettison flow is indicated by the display of magenta colored flow segments. During fuel jettison operations, the fuel jettison time is displayed in units of minutes.
(e)
Main tank to engine suction fuel flow is indicated by the display of amber colored flow segments from the main tanks to the respective engine symbols.
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CROSSFEED CROSSFEED
VALVE VALVE
TOTAL FUEL CENTER TANK PUMPS
(CLOSED) (CLOSED)
QUANTITY (PUMP ON-FLOW)
CROSSFEED VALVE (OPEN)
VALVE
(OPEN)
MAIN TANK
OVERRIDE
(PUMP OFF)
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