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 come on for a short time.
 (b) The DFDAU BITE fault code is shown in the format that follows:
 1) "BM00XXXX" (Where XXXX is the software version number)
 (c) If no BITE errors are shown on the DFDAU display, the display
 will show "NO FAULT".
 (d) If you do not move the switch, you will automatically time out
 and exit from the display. This applies to all procedure steps
 listed below.

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 (2)  Move the switch to the right to show the next active DFDAU error.
 (a)  
A "SEARCH" will show on the DFDAU display until the next active fault code is shown.

 (b)  
Continue to move the switch to the right position until all errors have been shown.

 NOTE: If no errors are shown or all errors have been shown on
____ the DFDAU display, the DFDAU will search for the ACMS errors. If you want to see the ACMS errors, go to step 3.
 S 864-067
 (3)  Move the switch to the left to search for active ACMS errors. The ACMS faults display shows the format as follows:
 (a) "BAXXXXXX" (Note that a 6-character fault code is used.)
 NOTE: ACMS fault status is obtained from buffers maintained by
____ other portions of the CSC (Computer Software Configuration item) that are in communication with the ACMS.
 S 864-068
 (4)  Move the switch to the right to show the next active ACMS error.
 NOTE: A "SEARCH" will show on the DFDAU display until the next
____ active fault code is shown. You can continue to move the switch to the right until all errors have been shown. If no ACMS errors are found or all errors have been shown, a blank screen will be shown on the DFDAU display.
 NOTE: If any faults other than those described below are present,
____
 remove and replace the DFDAU.
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 ~..............................................................................
 |  |  |  |  IS  |  |
 |  |  |  | Front  |  |
 |  |  |  IS  | Panel  |  |
 | DFDAU  |  | FRCP  | DFDAU  |  |
 | Bite  |  | Light  | BITE  | Action  |
 | Code  |  Bite Code Description  |  ON?  |LED ON? |  Note  |

 ................................................................................ |0005 |AIC BITE test fault 4 | NO | YES |Note 1 | ................................................................................ |0009 |AIC BITE test fault 8 | NO | YES |Note 2 | ................................................................................ |0026 to |AIC conversion channel "n" fault | NO | NO |Note 3 | | 0089 | | | | | ................................................................................ |0170 to |AIC conversion channel "n" hardware fault | NO | NO |Note 9 | | 0233 | | | | | ................................................................................ |0238 to |DIC channel "n" parity error | NO | NO |Note 9 | | 0301 | | | | | ................................................................................ |0302 to |DIC receiver test "n" fault | NO | YES |Note 9 | | 0365 | | | | | ................................................................................ |373 |FMC database channel > # in the DIC | NO | NO |Note 4 | ................................................................................ |377 |FMC has no ARINC 573 activity | YES | YES |Note 5 | ................................................................................ |382 |FMC dataload attempt into wrong DB | NO | NO |Note 4 | ................................................................................ |387 |FMC dataload attempt when not on ground | NO | NO |Note 6 | ................................................................................ |388 |FMC dataload version mismatch | NO | NO |Note 4 | ................................................................................ |389 |FMC DFDAU airplane config has changed | YES | YES |Note 7 | ................................................................................ |390 |FMC BITE fault from DFDR | NO | NO |Note 8 | ................................................................................ |391 |FMC DFDR database checksum fault (LSB) | YES | YES |Note 4 | ................................................................................ |392 |FMC DFDR database checksum fault (MSB) | YES | YES |Note 4 | ................................................................................ |395 |FMC out of time for DFDR database | YES | NO |Note 4 | ................................................................................ |398 |FMC DMU DB rate wrong with this DFDR DB | NO | NO |Note 4 | ................................................................................ |399 |FMC received bad hex record in DFDR | NO | NO |Note 4 | | |download | | | | ................................................................................ |400 |FMC illegal discrete port in DFDR DB | YES | NO |Note 4 |
　
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