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* NO BAL. DATA ACQUIRED
* WEIGHT LIMIT EXCEEDED
* NO SOLUTION FOUND
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - BALANCE PG 5 - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 001-099, 101-113, 115, 201-999 77-31-00
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BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
77-31-00-140
GUN 001-099, 101-110, 115, 201-999 (Continued)
* NO CHANGE REQUIRED.
Push YES from the SOLUTION FOUND DISPLAY? message to
see the solutions. The balance screws (classification) you
should remove or install shows for locations that require a
change.
The DISPLAY SOLUTION AGAIN ? message shows after the last
necessary change. Push the YES switch to see the balance
solutions again. Push the No switch to display the SAVE NEW
CONFIG. ? menu.
Push YES to save the new data in AVM memory only if you plan
to follow the solution and remove and install appropriate
balance screws. This makes sure that the balance weight data
(weight classification and location) in AVM non-volatile memory
agrees with the engine. If the new weight configuration is saved,
the imbalance data for the last 6 flights will clear.
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 - BALANCE PG 5 - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 001-099, 101-113, 115, 201-999 77-31-00
Page 64
D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
77-31-00-140
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - BALANCE PG 5 - TRAINING INFORMATION POINT
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - BALANCE PG 5 - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 111-113 77-31-00
Page 65
D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
77-31-00-140
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - BALANCE PG 5 - TRAINING INFORMATION POINT
AVM SYSTEM - AVM SIGNAL CONDITIONER BITE - BALANCE PG 5 - TRAINING INFORMATION POINT
EFFECTIVITY
GUN 001-099, 101-110, 115, 201-999 77-31-00
Page 66
D633A101-GUN Jun 10/2006
BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details.
CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL
77-31-00-140
General
The AVM signal conditioner has a front panel LED display and
four BITE switches. You use the BITE switches for navigation
through the BITE menus.
The LED display is normally off. The display comes on when
you push any of the BITE switches and power is available. The
display goes blank again if any one of these happens:
* You do not push any BITE switches in 15 minutes
* The crew starts both engines
* You push the NO bite switch at the ERASE STORED DATA
menu.
The BITE has these five main menu items:
* SELF TEST
* SYSTEM FAULTS
* FLIGHT HISTORY
* BALANCE ENGINES
* ERASE STORED DATA.
The SELF TEST menu item shows when the display first comes
on. You push the NO BITE switch to go to the next menu item.
You use the YES BITE switch to enter the SELF TEST menu. The
BITE switches with the up arrow and down arrow are inactive at
the SELF TEST menu.
Always follow the fault isolation manual (FIM) procedure and
any necessary AMM procedures when you do AVM BITE.
SELF TEST
The SELF TEST menu selection lets you make the AVM signal
conditioner to do an internal self test. See the SELF TEST - TIP
page that follows in this section for more information on this
part of the BITE menu.
SYSTEM FAULTS
The SYSTEM FAULTS menu selection lets you see the external
(interface) AVM system fault (maintenance) messages that are
in non-volatile memory. You push the NO BITE switch from the
SELF TEST menu to get to the SYSTEM FAULTS menu. You can
push the up arrow BITE switch to return to the SELF TEST
menu. See the SYSTEM FAULTS - 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 or legs) for each engine. See
the FLIGHT HISTORY - TIP page that follows in this section for
more information on this part of the BITE menu.
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