........................................................................ | DATA button | E2 | Engine 2 (E2) | ........................................................................ | DATA button | 00 - 50 *[1] | Fan Vibration - E2 | | | | *[5] | ........................................................................ | DATA button | 00 - 50 *[1] | HPC Vibration - E2 | | | | *[5] | ........................................................................ | DATA button | 00 - 50 *[1] | LPT Vibration - E2 | | | | *[5] | ........................................................................
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77-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
~...................................................................... | FLIGHT HISTORY | ........................................................................ | What button on the AVM | Front display of AVM | Description of | | signal conditioner to | signal conditioner | front display | | push and release *[6] | | | ........................................................................ | DATA button | 00 - 50 *[1] | HPT Vibration - E2 | | | | *[5] | ........................................................................ | DATA button | 00 - B9 *[2] | N1 Speed (%) - E2 | ........................................................................ | DATA button | 00 - B9 *[2] | N2 Speed (%) - E2 | ........................................................................
| | | Time of Maximum |
| DATA button | >01 *[1] | Vibration - E2 |
| | | (Hours) *[4] |
........................................................................ | DATA button | FF | Next Sequence Start | ........................................................................ | DATA button | 01 *[3] | Flight Number | 2.........................…......................….....................1
*[1] Display will be XX but actual data is X.X.
*[2] Display will show 00-99%, A0-A9% (100-109%), B0-B9% (110-119%).
*[3] Last flight is 00, the flight before is 01 to 31.
*[4] Elapsed time from the start of the flight in hours.
*[5] In Scaler Units (0.0 to 5.0).
*[6] Push and hold the DATA button for more than 4 seconds and the
flight number will change each second until you release the DATA button.
NOTE: Vibration values attributed to engine warm-up/
____ stabilization can occur before flight 01 and need not be taken into account for maintenance.
(a) Find the TEST button on the front of the AVM signal conditioner.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(b) Push and release the TEST button to disable the TACH's.
NOTE: This will disable the TACH's and let flight history be
____
displayed.
(c)
Find the DATA button on the front of the AVM signal conditioner.
(d)
Push and release the DATA button to show code FF and this will put the unit in the flight history mode.
(e)
Push and release the DATA button to get the last flight number
00.
(f)
Push and hold the DATA button for more than four seconds to scroll the flight numbers (flight number O1 to 31) and release.
NOTE: The flight numbers will scroll, once each second, until
____ you release the DATA button.
(g) Push and hold the DATA button until the data shows what you want and release.
NOTE: The AVM signal conditioner will keep the flight history
____ data for 32 flights in the storage memory. You can not erase the flight with the BITE/ERASE, TEST and DATA button.
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