OBSERVED FAULTS
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FAULT DESCRIPTION_________________  FAULT CODE__________
 Marker beacon:
 . Audio tone does not occur or is weak when
 passing marker; marker beacon indication
 normal.

 -all stations ................................... 345 622 48

 -captain's ...................................... 345 622 31

 -
first observer's ............................... 345 622 33

 -
first officer's ................................ 345 622 32

 . Indication does not show on either PFD when passing marker; audio tone does not occur or is weak ............................................. 345 623 48
 . Indication does not show on either PFD when passing marker; audio tone normal ................ 345 621 00
 Master WARNING lights come on and fire bell sounds but no related EICAS message shows ................... 261 611 00
 MAT display:
. Blank after the end of a flight .................. 451 822 00

. CONDITION MONITORING does not show on the
 initial menu ..................................... 451 821 00 . Does not show Hard Drive selection on the Data
 Load display with hard drive installed on
 airplane ......................................... 451 816 00. ONBOARD MAINTENANCE does not show on the initial menu ..................................... 451 820 00 . Shows NO DATA AVAILABLE FOR THIS SELECTION (in
 Present Leg Faults, Inbound FDEs, or Existing
 Faults) when there are EICAS fault messages ...... 451 819 00. Shows "Self-Load not available" .................. 451 823 00 . Shows "The request is operating ..." for more than 20 seconds .................................. 451 815 00 . Stays blank after power is supplied to airplane ......................................... 451 818 00

OBSERVED FAULTS
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FAULT DESCRIPTION_________________ FAULT CODE
 MAT error message:. DISK DRIVE error message ......................... 451 535 00. LRU DOES NOT GIVE A REPLY shows on MAT system
 configuration display ............................ 451 814 00. LRU INACTIVE/FAULTED shows on MAT system
 configuration display ............................ 451 811 00. MAT OPS software is invalid or not installed ..... 451 817 00 . MTF cannot connect and ACMF does not give a
 reply ............................................ 451 514 00. MTF cannot connect and CMCF does not give a reply ............................................ 451 513 00. MTF cannot connect to AMCF and no more sessions are available .................................... 451 512 00 . MTF cannot connect to CMCF and no more sessions are available .................................... 451 511 00 . No signal came back from destination LRU
　
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