DATA button again.
(d)
Do one of the steps that follow to interrogate the AVM signal conditioner further: 1) If you do not want to continue, push the TEST button.
NOTE: The TEST button will start a self test and turns the
____ display off. This puts the AVM signal conditioner back to its standby mode.
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2) When the last BITE maintenance message is displayed, push and release the DATA button if you want to erase all the BITE maintenance messages in storage memory.
NOTE: You will have no indication of the total number of
____ BITE maintenance messages before they are erased. After you erase all the BITE maintenance messages, the code FF will show on the front display. The flight history follows code FF. The AVM signal conditioner is now in the flight history mode.
a) If you do not want to continue, push the TEST button.
NOTE: The TEST button will start a self test and turns
____ the display off. This puts the AVM signal conditioner back to its standby mode.
(e) If there are no BITE maintenance messages in storage memory, then the front display will be blank. 1) If there are BITE maintenance messages, do the
troubleshooting that shows for an AVM Indication Problem (AMM 71-00-54/101).
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F. Read the Flight History
S 972-036-C00
(1) Do these steps to read the flight history:
NOTE: The AVM records the highest vibration level and rotor speed
____ from each engine sensor for all the engine rotors. The AVM records the highest vibration level and rotor speed from each engine sensor for one rotor, then at the same time and engine speed, records the associated vibration level and rotor speed for the other rotor and records the time since engine start that the highest vibration occurred. The vibration level recorded at the same time for the other rotor may not be the highest vibration for that rotor if the vibration level does not exceed the highest level currently recorded for that sensor. There may be times when the vibration level shown for a rotor may not be the highest vibration that rotor has experienced and will never be recorded in flight history until that rotor vibration exceeds the highest level previously recorded. If BITE maintenance messages are to be saved, you must record them before you read the flight history. Flight history can not be read unless all BITE maintenance messages are deleted.
(a) Find the DATA button on the front of the AVM signal conditioner.
NOTE: Each push of the DATA button will show BITE maintenance
____ messages; and, then at the end they will be deleted and show FF.
CAUTION: RECORD ALL THE BITE MAINTENANCE MESSAGES BEFORE YOU PUSH
_______ THE DATA BUTTON AGAIN. YOU WILL ERASE ALL THE BITE MAINTENANCE MESSAGES WHEN YOU PUSH THE DATA BUTTON AFTER THE LAST BITE MAINTENANCE MESSAGE.
(b) Push and release the DATA button until the data shows what you want.
NOTE: You will have no indication of the total number of BITE
____ maintenance messages before they are erased. There are 5 different BITE maintenance messages. The AVM signal conditioner can keep 32 BITE maintenance messages in the storage memory.
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