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_
R  (Ref. Fig. 009)
 - Access to the GROUND SCAN function
 This function is accessible from the MCDU when the system is 
R  in menu mode (when the aircraft is on the ground). 
R  The following three functions can be accessed when the AFS 
R  /GROUND SCAN page is displayed:
 - GROUND REPORT
 - PRESENT FAILURES SCAN 
R  - PROGRAM (if active).
 The line key adjacent to the RETURN indication enables
 selection of the previous menu page.
 - GROUND REPORT function
 This function enables the failures recorded in the ground
 area of the FIDS memory to be displayed. 
R  As this memory is capable of storing three contexts, the 
R  three most recent failures can be displayed, the oldest
 contexts being eliminated.
 The content of the ground area is erased during computer
 power up and engine start (NULL to DC2).
 The failures memorized and visible in the GROUND REPORT are
 the ones which occurred after the last ground area
 initialization.
 Two types of content can be displayed:
 * Only the internal failures that occured on ground are
 normally displayed by the GROUND REPORT function.
 * After selection of the PRESENT FAILURES SCAN function
 (Ref. para. PRESENT FAILURES SCAN function) all internal and
 external failures (considering a limit of three contexts)
 found during this operation are seen in this report. As
 selection of the PRESENT FAILURES SCAN function erases the
 content of the ground area, it is highly recommended, prior
 to this selection, to display this content using the GROUND
 REPORT function.
 Failures are presented with the following data:
 - the flight counter (-00) which indicates that the failure
 occurred on the ground
 - the ATA reference and associated message
 - the computer which identified the failure.
 Additional information can be obtained by selecting the
 TROUBLE SHOOTING DATA item (push action on the line key
 adjacent to the TROUBLE SHOOTING DATA indication). The
 procedure and the displayed content are similar to the LAST
 LEG REPORT and PREVIOUS LEGS REPORT.
 - PRESENT FAILURES SCAN function
 (GROUND SCANNING)

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R  MCDU Pages MAIN MENU and Ground Scan Options Figure 009
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 This function is used to isolate failures present when the function is selected. Therefore an inhibited failure will not be announced. Once the function is activated (push action on the line key adjacent to the PRESENT FAILURES SCAN indication), a wait message is displayed for 40s while the system isolates the present failures. After this time, the messages are displayed on the GROUND REPORT page. A maximum of three failures, internal or external, present at that time, can be displayed.
 NOTE : As soon as the PRESENT FAILURES SCAN function is
____ selected, the ground contexts previously recorded are erased and thus definitively lost. Each processor (e.g.:FMGC1 COM or FAC2 MON) can announce one failure only (the failure with the highest priority). If two failures are present at the same time, N..1 has to be solved first so that the concerned processor can announce N..2 in a second PRESENT FAILURES SCAN report. The FIDS include a PROGRAM menu. When this menu is activated it allows to obtain more engineering messages (not useful at maintenance level).
 5 LRU IDENTIFICATION
_
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299,
 (Ref. Fig. 010)
R **ON A/C 106-149, 301-399, 401-499,
 (Ref. Fig. 010A)
 **ON A/C ALL
 -This function presents, on the ground only, the PART NUMBER of the FACs and the FMGCs.
 -The page also gives the AIRCRAFT IDENTIFICATION.
 NOTE : The LRU IDENT can be obtained after the power-up test
____ only. This data is available after energization of the FAC and the FMGC as follows:
 -
for the FAC, after more than 90 seconds

 -
for the FMGC, after more than 120 seconds.

 1EFF : ALL 1 22-91-00Page 28 1 1 Aug 01/05 1 1 1CES 1

 LRU Identification Pages
 Figure 010

 

 LRU Identification Pages
 Figure 010A

 

 6 AFS TEST, LAND TEST : these two options and their operation
_ are described in ATA REFs 22-96-00 and 22-97-00 respectively.
　
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