*
Two EFIS control panels (EFIS CPs)
*
Display select panel (DSP)
*
Two cursor control devices (CCDs)
*
Two remote light sensors (RLSs)
*
Two instrument source select panels (ISSPs)
*
Two display switching panels
*
Center display control panel.
Three control display units (CDU) give alternate EFIS CP functions and alternate DSP functions.
Overhead Panel ARINC 629 System (OPAS) Interface
These are the control panels that interface with the OPAS:
*
DSP
*
Two CCDs
*
Two ISSPs
*
Two display switching panels
*
Center display control panel.
OPAS multiplexes the signals and sends the data to the systems ARINC 629 data buses.
EFFECTIVITY
BEJ ALL
OPAS also sends control information to each control panel.
AIMS Cabinet Interfaces
The AIMS cabinets get airplane information on the ARINC 629 flight controls and system buses and the ARINC 429 buses. The AIMS cabinets also get analog and analog discrete data.
The AIMS cabinets get control information from the two EFIS CPs and the two CCDs on ARINC 429 data buses. Additional control information comes from the three CDUs on the systems ARINC 629 buses.
The AIMS cabinets send information to the display units on high speed coax lines through four coax couplers.
Two remote light sensors supply inputs to the two outboard display units. Other flight deck controls supply additional brightness and contrast controls for the display units.
Each display unit sends information to the AIMS cabinets on ARINC 429 data buses. This data is for fault reporting and brightness controls.
DU Location and Formats
Location determines which types of display format shows. These are the display locations:
* Left outboard DU
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PRIMARY DISPLAY SYSTEM -GENERAL DESCRIPTION
*
Left inboard DU
*
Upper center DU
*
Lower center DU
*
Right inboard DU
*
Right outboard DU.
The format that each DU shows depends on its location. DU status, location, and switch inputs determine the format a DU shows. These are the formats a DU can show:
*
Primary flight display (PFD)
*
Navigation display (ND)
*
EICAS
*
Multifunction display (MFD).
The left and right outboard DUs show only a PFD format.
The left and right inboard DUs normally show the ND format. They can show these formats:
*
PFD
*
EICAS
*
MFD.
The upper center DU shows only the EICAS format. The lower center DU normally shows the MFD format. It can show these formats:
*
EICAS
*
ND
*
MFD.
Each format has one or more modes. Flight deck control inputs and other system inputs determine which mode shows.
The PFD has only one mode.
The ND has these seven modes:
*
Centered approach mode
*
Expanded approach mode
*
Centered VOR mode
*
Expanded VOR mode
*
Centered map mode
*
Expanded map mode
*
Plan mode.
The EICAS display can show the normal display or a compacted format.
The MFD can show these formats:
*
Secondary engine display
*
Status display
*
Synoptic display (7)
*
Maintenance page (19)
*
Checklists display
*
Communication display.
The PFD, EICAS and secondary engine formats are critical formats. The ND and other MFD formats are essential formats.
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PRIMARY DISPLAY SYSTEM -COMPONENT LOCATIONS -1
Major Components
The primary display system major components in the flight deck are:
*
Left outboard display unit (DU)
*
Left inboard DU
*
Right outboard DU
*
Right inboard DU
*
Upper center DU
*
Lower center DU
*
Left EFIS control panel (CP)
*
Right EFIS CP
*
Display select panel
*
Left cursor control device (CCD)
*
Right CCD
*
Left Remote Light Sensor (RLS)
*
Right RLS
*
Captain’s display switching panel
*
F/O display switching panel
*
Center display control panel.
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