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part of the BITE menu.
FAULT HISTORY?
The FAULT HISTORY? menu selection lets you see fault
(maintenance) messages that are in non-volatile memory.
See the FAULT HISTORY - TIP page that follows in this section
for more information on this part of the BITE menu.
FLIGHT HISTORY?
The FLIGHT HISTORY? menu selection lets you see vibration
data for the last 32 flights (cycles) for each engine. See the
FLIGHT HISTORY - TIP page that follows in this section for more
information on this part of the BITE menu.
BALANCE?
The BALANCE? menu selection lets you do these tasks:
* See fan and LPT imbalance data for the last 6 flights (cycles)
* See and modify balance weight information in AVM nonvolatile
memory
* Make the AVM signal conditioner calculate the balance
solution for 1 plane (fan only)
* Make the AVM signal conditioner calculate the balance
solution for 2 planes (fan and low pressure turbine).
See the BALANCE - TIP pages that follows in this section for
more information this part of the BITE menu.
GUN 001-099, 101-110, 115, 201-999
TURN OFF DISPLAY?
The TURN OFF DISPLAY? menu selection lets you exit the BITE
test or go to the next menu. You exit the BITE menu and the
display goes blank when you push the YES switch. The next
menu, SELF TEST, shows when you push the NO switch.
GUN 001-099, 101-113, 115, 201-999
Training Information Point
Although the 2 plane balance is a function of the AVM signal
conditioner, it is not an approved maintenance procedure for
the CFM56-7 engine. Refer to AMMII 71-00-00.
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - MAIN MENU - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 001-099, 101-113, 115, 201-999 77-31-00
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AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - MAIN MENU - TRAINING INFORMATION POINT
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - MAIN MENU - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 111-113 77-31-00
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77-31-00-114
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - MAIN MENU - TRAINING INFORMATION POINT
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - MAIN MENU - TRAINING INFORMATION POINT
EFFECTIVITY
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THIS PAGE IS INTENTIONALLY LEFT BLANK
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CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
Purpose
The SELF TEST menu lets you start an internal test of the AVM.
At the end of the test, the front panel shows all faults found
during the test.
General
GUN 111-113
You can make the AVM signal conditioner do an internal test
from the SELF TEST menu. To start the test, push the YES
switch from the SELF TEST display in the main menu.
GUN 001-099, 101-110, 115, 201-999
To start the test, push the YES switch at the SELF TEST menu.
The first display during the test shows this information:
* AVM part number
* Hardware version
* Software version
* Engine type.
The 0ss shows the software version. The HHh shows the
hardware version. The XXXXXXXX shows the engine type. It
shows as CFM56-7B. If the AVM detects an incompatible
airplane or engine type, a CONFIG FAULT message shows.
GUN 111-113
The first display during the test shows the signal conditioner
part number. The HHH gives the hardware version. The SSS
gives the software version.
GUN 001-099, 101-113, 115, 201-999
The next display shows a message that the test is in progress.
The test takes about 10 seconds.
GUN 111-113
The TEST OK message shows if the signal conditioner passes
the test. The FAULTS DISPLAY? message shows if the AVM
finds failures. The XX gives the number of faults found during
the test. Push the up arrow switch or down arrow switch to see
the fault messages (text). Push the NO switch to return to the
main menu.
GUN 001-099, 101-110, 115, 201-999
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