PRIMARY DISPLAY SYSTEM -CENTER DISPLAY CONTROL PANEL INTERFACES
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PRIMARY DISPLAY SYSTEM -F/O DISPLAY SWITCHING PANEL INTERFACES
General
An inboard display (INBOARD DSPL) selector and an FMC selector send analog discretes to the OPAS panel data concentrator units (PDCUs). The display selector gives the flight crew control of the inboard display format. The FMC selector gives the flight crew manual or automatic control of the FMCF source on both the captain and first officer’s displays.
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PRIMARY DISPLAY SYSTEM -F/O DISPLAY SWITCHING PANEL INTERFACES
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PRIMARY DISPLAY SYSTEM -MASTER CAUTION LIGHTS INTERFACES
Master Caution Light On Signal
IOMs M004 and M003 in each AIMS cabinet supply a master caution light on signal to both master caution lights.
Reset
When you push a master caution light, IOMs M008 and M009 in each AIMS cabinet receive a master caution light reset signal. This makes both master caution lights go out.
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PRIMARY DISPLAY SYSTEM -MASTER CAUTION LIGHTS INTERFACES
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PRIMARY DISPLAY SYSTEM -DISPLAY UNIT
Purpose
The primary display system uses six identical ARINC D flat panel liquid crystal display (LCD) units. These display units (DUs) show:
*
Primary flight information
*
Navigation information
*
Engine information
*
Crew alerting information
*
Airplane systems data.
Physical Description
The DUs are in a rack. The DUs are 8 inches by 8 inches and are
8.75 inches deep. Each DU weighs 18 pounds.
There is a bezel light sensor (BLS) at the bottom edge of the face plate.
Operation
The DUs have two internal temperature detectors. The power supply has a detector that causes the DU to shutdown when the internal temperature reaches 110 degrees centigrade. The backlight assembly has a detector that causes the DU to shutdown when the internal temperature reaches 95 degrees centigrade. The detectors automatically turn the DUs off during an overtemperature condition. The DUs come on when the temperature returns to normal. The DUs use forced air cooling.
Training Information Point
The six DUs are interchangeable. Due to the viewing angle limitations of LCD technology, the installation of the lower center DU is 180 degrees (handle at the top) from the other DUs. For the lower center DU, the handle is opposite to the handle of the other DUs.
Training Information Point
During the removal or installation of the inboard and outboard DUs, you must move the control column.
CAUTION: MOVEMENT OF THE CONTROL COLUMN MAY CAUSE FLIGHT SURFACE MOVEMENT.
NOTE: Remove plastic covers from the connectors before you install a DU.
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777 AIRCRAFT MAINTENANCE MANUAL
PRIMARY DISPLAY SYSTEM -DISPLAY UNIT
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777 AIRCRAFT MAINTENANCE MANUAL
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PRIMARY DISPLAY SYSTEM -EFIS CONTROL PANEL
Purpose
Two identical EFIS control panels (EFIS CP) control data on the PFD and ND formats.
Description
The EFIS CP is 4.8 inches by 3.45 inches and 6 inches deep. The panel weighs approximately 4 pounds.
PFD Controls
Use these controls to manage data on the PFD:
*
Minimums reference selector
*
Flight path vector (FPV) switch
*
Meters (MTRS) switch
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Barometric (BARO) reference selector.
The minimums reference selector selects and sets altitude minimums. The minimums reference outer selector selects either RADIO or BARO minimums. The inner selector sets the altitude. The reset (RST) push-button switch cancels the RADIO or BARO alert annunciation.
The FPV switch enables or disables the display of the FPV vector symbol.
The meters (MTRS) switch is an alternate action switch that controls the display of actual and selected altitude in meters. This is in addition to the display of these parameters in feet.
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