The left and right CDU scratchpad shows the advisory message. The CDU annunciator MSG comes on for all CDUs.
The CDUs can supply the advisory messages when the FMCFs fail.
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FMCS -FMCF/CDU MESSAGES
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FMCS -MENU PAGE
General
The MENU page gives a list of selections for systems that use the CDU. These are the systems that use the CDU:
*
Flight management computing system (FMCS)
*
Satellite communication (SATCOM) system
*
Cabin services system (CSS)
*
Primary display system (PDS).
The CDUs can operate as alternate control panels for the EFIS control panels and the display select panel (DSP).
The CDU has a selection that lets you get access to maintenance pages on an MFD.
Page Access
The MENU page shows at CDU power-up or push the MENU mode key to show the menu page.
Color
All text on the MENU page is white except for the OFF/ON indications for the alternate EFIS CP and DSP functions. OFF is green when an EFIS CP or DSP has failed and should be selected. ON is green when the EFIS CP or DSP function on the CDU is in use.
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Operation
The left line select keys select which system communicates with the CDU. Only one of these systems can control the CDU at a time. <ACT> shows on the MENU page for the system that is active. If a system requests control of the CDU, there is a <REQ> after the system name.
Push 1L <FMC for the FMCF to communicate with the CDU. The INIT/REF INDEX page shows.
Push 2L <SAT for the satellite data unit (SDU) to communicate with the CDU. The associated CDU page shows.
Push 4L <CAB INT for the passenger address/cabin interphone controller to communicate with the CDU. The associated CDU pages show. The <CAB INT prompt is only available on the center CDU.
Push 5R MAINT INFO DISPLAY> to show the PDS maintenance pages CDU on the MFD.
The left and right CDUs normally show the prompts for the alternate on-side EFIS CP function. If the left or right CDU fails, the EFIS CP function shows on the center CDU.
Do this to operate the alternate EFIS controls:
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FMCS -MENU PAGE
*
Push 1R EFIS CTL OFF on> and EFIS> shows on line 2R
*
Push 2R to go to the EFIS control selections page.
All three CDUs show the alternate DSP prompt.
Do this to operate the alternate display select panel (DSP) controls:
*
Push 3R DSP CTL OFF on> and DSP> shows on line 4R
*
Push 4R, DSP> to go to the DSP control selections page.
You must cancel the alternate DSP function from the same CDU you used to enable the alternate DSP function.
The MEMORY selection at 6R is for shop use only.
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FMCS -MENU PAGE
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FMCS -INIT/REF INDEX PAGE
General
The initialization reference (INIT/REF) INDEX page is a menu of the pre-flight pages. You select these pages to initialize the FMCS and the ADIRU and enter other kinds of reference data.
The INIT/REF INDEX page also shows some inflight pages and the maintenance page prompt.
Page Access
To get access to the INIT REF INDEX page, do one of these steps:
*
Push the INIT REF mode key to show a preflight page
*
Push 6L <INDEX on a preflight page.
Color
All text on this page is white.
Page Selections
Use the active line select keys on the INIT/REF INDEX page to select additional pages.
Push 1L <IDENT to show the identification page.
Push 2L <POS to show the position initialization page.
Push 3L <PERF to show the performance initialization page.
Push 4L <THRUST LIM to show the thrust limits page.
Push 5L <TAKEOFF to show the takeoff reference page.
Push 6L <APPROACH to show the approach reference page.
Push 1R NAV DATA> to show the navigation data reference
page.
Push 2R ALTN> and the alternate page shows. The alternate
page shows alternate route structures. Fuel and ETA also shows for the alternates route structures. Push 5R MAINT> to show the maintenance index page. The 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：777 AMM 飞机维护手册 导航 Navigation 2(44)
