(2)  
AMM 71-00-54/101, AVM Indicating Problem

 C. Access
 (1)  
Location Zones
 205 Electronic Compartment

 (2)  
Access Panels
 1201L Electronic Equipment Access Door

 D. Prepare to Read the BITE Maintenance Messages and the Flight History
 S 862-048-C00
 (1)  Make sure that this circuit breaker is closed:
 (a)  Circuit Breaker Panel, P6-2:
 1) 6A2, ENGINE VIB MON

 S 012-049-C00
 (2)  Open the Electronic Equipment Access Door, 1201L.
 E. Read the BITE Maintenance Messages
 S 972-050-C00
 (1)  Do these steps to read the main menus on the front display of the AVM signal conditioner:
 (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 edit with the NO button.
 (b)  Push and release the NO button to show X SYSTEM FAULTS SHOW? on the front display of the AVM signal conditioner.
 NOTE: If NO SYSTEM FAULTS is displayed there are no BITE
____ maintenance messages to view. If X SYSTEM FAULTS SHOW? is displayed, see the BITE maintenance message steps below.
 (c)  After X SYSTEM FAULTS SHOW?, push and release the NO button to show SHOW FLIGHT HISTORY? on the front display of the AVM signal conditioner.
 NOTE: If NO FLIGHT HISTORY is displayed, there is no flight
____ history data to view. If SHOW FLIGHT HISTORY? is displayed, see the flight history steps below.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(d)  
After SHOW FLIGHT HISTORY?, push and release the NO button to show BALANCE ENGINES? on the front display of the AVM signal conditioner.

 (e)  
After BALANCE ENGINES?, push and release the NO button to show ERASE STORED DATA? on the front display of the AVM signal conditioner.

 (f)  
After ERASE STORED DATA?, push and release the NO button again, and the display will turn off.

 S 972-051-C00
 (2)  Do these steps to read the BITE maintenance messages: ~................................................................ | BITE MAINTENANCE MESSAGES | .................................................................. | MAINTENANCE MESSAGES | DESCRIPTION | .................................................................. | SELFTEST PASSED *[1] | SELF TEST OK - COMPLETE | .................................................................. | SELFTEST FAILED REPLACE | SELF TEST FAILURE | .................................................................. | E1N1TACH SEN/CABL FAULT-B1 | SIGNAL LOSS - TACH N1, ENG 1 | .................................................................. | E1N2TACH SEN/CABL FAULT-B2 | SIGNAL LOSS - TACH N2, ENG 1 | .................................................................. | E2N1TACH SEN/CABL FAULT-B3 | SIGNAL LOSS - TACH N1, ENG 2 | .................................................................. | E2N2TACH SEN/CABL FAULT-B4 | SIGNAL LOSS - TACH N2, ENG 2 | .................................................................. | NO BALANCE FUNCTION | Non Volatile RAM Fault | 2..............................….................................1 *[1] Display message only.
 (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.
 (b)  Push and release the NO button to show X SYSTEM FAULTS SHOW? on the front display of the AVM signal conditioner.
 NOTE: If NO SYSTEM FAULTS is displayed, there are no BITE
____ maintenance messages to view. To turn the display off push the NO button again four times.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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