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Maintenance Data Computer REV 56, Jan 31/03
A. Maintenance Menu Page Overview
W LRUSTATUS -
Displays alist of current(MDCdetected) non-
functioningLRU’s and their status. W LRUFAULTHISTORY -
Displays alist of all storedLRUfaults, in theMDC memory, forthelast50flightlegs. W LRUDIAGNOSTICDATA-
Displays a list of allLRU’s andthe currentbitpatterns of thediagnostic wordsof eachLRU. W ENGINEEXCEEDANCEHISTORY-
Displays alist of allengine exceedances for thepast50flightlegs.
W ENGINETRENDHISTORY -
During eachflightlegthe MDCstores in its memory a list of selectedengine parameters (called asnapshot) TheMDC can store upto 50 snapshots.
W LIFECYCLEDATA-
Displaysthe numberofthrust reverser cycles andthe engine operatinghours. W DISKOPERATIONS -
In conjunction withthedataloader, is usedto upload or downloadMDCfiles.
W CLOCKSETOPERATION -
Usedto settheMDCinternal clock. Normally, the MDC uses theaircraft clocks fortime reference. Ifthe aircraft clocks fail, theMDC internal clockis used.
W AIRCRAFTIDENTSETOPERATION-
Usedto set aircraftidentification for the LRU’s. W FCCDIAGNOSTICS -
Displays instructions toputflight controlsysteminto diagnostic mode. W CENTRALSTRAPPINGUNITCONFIG-
Usedto checkthe configuration ofthe integrated avionics processorsystem (IAPS)computers. Whenin theMDC mode,theDisplayControlPanelbuttonsfunction asfollows: W BRG1(upper) -
usedto move the cursor UP, or to scrollbackward. W BRG2(lower) -
usedto move the cursor DOWN, or to scrollforward. W RDR -
usedto select aline, ortoswitchthedisplayformatfrom binaryto hexadecimal. W TFC -
usedto return tothe menu page. W NAVSOURCE -
usedto display computer wordlabels.
Flight Crew Operating Manual MASTER
CSP A-
013
AURAL/VISUAL INDICATING AND RECORDING Maintenance Data Computer Vol. 1 02-
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REV 56, Jan 31/03
B. Data Loader Unit
The dataloaderis aportable unitthatplugsinto aconnectoron the copilotsbulkhead below circuitbreakerpanelNo. 2. Throughthedownloadfunction fromtheMENU page,theunitenables thetransfer ofdatafiles, between DOS-compatible diskettesand applicable aircraftsystems. The data loaderunitprovidesthe capabilityto formatdisks, readdirectories andread/write files.
The dataloaderis mounted between thegalleyandthe aft side ofthe copilots bulkhead. Throughthedownloadfunction from theMENUpage,theunitenables the transferofdatafiles, between DOS-compatible diskettesandapplicable aircraft systems. The data loaderunitprovidesthe capabilityto formatdisks, readdirectories andread/write files. <0018>
Indicates that power to disk
Data Loader Unit
drive is available.
NOTE
Indicators are not dimmable.
Data Loader Unit <0018> Figure 02 ---40 ---2
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