77-31-00
ALL ú ú C01A Page 244 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(a) Push and release one of the four buttons to show Self Test? on the front display of the AVM signal conditioner.
NOTE: You can move up or down the main menus with the UP or
____
DOWN ARROW buttons, but you can only exit with the NO
button. The NO button is used to review all the main
menus.
(b) Push and release the NO button to show Fault History? on the front display of the AVM signal conditioner.
NOTE: The BITE maintenance messages will not be erased unless
____ the YES button is pushed while Clear Faults Memory? shows on the front of the AVM signal conditioner. The AVM signal conditioner can keep 32 BITE maintenance messages in the storage memory. The YES button is used to review each menu.
(c) After Fault History?, push and release the YES button to show XX Faults Display? on the front display of the AVM signal conditioner.
NOTE: The XX refers to the total number of faults in storage
____ memory. If No Fault is displayed, there are no BITE maintenence messages to view. After No Fault, if the NO button is pushed, the front display will show Flight History?. If Flight History? is displayed, see the flight history steps below.
(d) After XX Faults Display?, push and release the YES button to show the last BITE maintenance message that was set.
NOTE: The UP or DOWN ARROW button can be used to review all
____ the BITE maintenance messages. The most recent BITE maintenance message is displayed first, followed by the most recent BITE maintenance message.
1) Record this BITE maintenance message before you get the
subsequent BITE maintenance message.
(e) Push and release the DOWN ARROW button to show each of the remaining BITE maintenance messages. 1) Record each BITE maintenance message before you get the
subsequent BITE maintenance message.
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77-31-00
ALL ú ú C02A Page 245 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(f) If you do not want to continue, or if you want to keep the BITE maintenance messages, push and release the NO button to show Clear Faults Memory? on the front display of the AVM signal conditioner.
NOTE: After Clear Faults Memory?, push and release the NO
____
button again to show the main menu (Flight History
displayed).
(g)
If you push and release the DOWN ARROW button after the last BITE maintenance message, the first BITE maintenance message will show on the front display of the AVM signal conditioner.
(h)
Do one of the steps that follow to interrogate the AVM signal conditioner further: 1) If you want to see the BITE maintenance messages again
after Flight History?, push and release the NO button four times. 2) If you want to see flight history after XX Faults Display?, push and release the NO button twice.
NOTE: Clear Faults Memory? and then, Flight History? will
____ show on the front display of the AVM signal conditioner. If Flight History? is displayed, see the flight history steps below.
3) After Fault History?, push and release the NO button to show Flight History? on the front display of the AVM signal conditioner.
NOTE: If Flight History? is displayed, see the flight
____
history steps below.
CAUTION: RECORD ALL OF THE BITE MAINTENANCE MESSAGES BEFORE
_______ YOU PUSH THE YES BUTTON AGAIN. YOU WILL ERASE ALL THE BITE MAINTENANCE MESSAGES WHEN YOU PUSH THE YES BUTTON WITH CLEAR FAULTS MEMORY? ON THE DISPLAY.
4) After XX Faults Display?, push and release the NO button to show Clear Faults Memory? on the front display of the AVM signal conditioner.
NOTE: After Clear Faults Memory?, if the NO button is
____ pushed again the front display will show Flight History?. After Clear Faults Memory?, if the YES button is pushed the front display will show Faults Memory Cleared.
(i) 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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