(1) Do the BITE procedure for the ADF receiver.
(a) Push and release either of the two switches on the front panel of the ADF receiver to start
the BITE test.
1) Make sure that LCD screen shows ADF TEST IN PROGRESS.
(b) If the LCD screen shows ADF TEST COMPLETE NO FAILURES, then the ADF BITE test
passed.
(c) If the LCD screen shows ADF TEST COMPLETE FAILURES, then do these steps:
1) Push the right switch under the WHY? prompt.
2) If the LCD screen shows ADF FAIL or ADF FAIL EXTERNAL FAILURES PRESENT, then
refer to the table at the end of this task to find the fault isolation task for the applicable
maintenance message.
3) If the LCD screen shows ADF OK EXTERNAL FAILURES PRESENT, then do these
steps:
a) Push the right switch under the MORE prompt.
NOTE: The LCD screen will show the first maintenance message. The LCD
screen can show only one maintenance message at a time.