(2)
The ARINC 429 Data Bus Charts
TASK 77-31-00-772-001-N00
2. AVM SIGNAL CONDITIONER VIBRO-METER S362A001; Airborne Vibration Monitoring (AVM) System - System Test
________________________________________________________
A. General
(1)
This task is the system test procedure for the airborne vibration monitoring (AVM) system.
(2)
Use this procedure for the AVM signal conditioner with this part number:
(a)
Boeing part number - S362A001
(b)
Supplier part number - Vibro-meter P/N 241-280-051-012
(3)
This AVM signal conditioner has a digital display of three lines of eight (8) characters in each line.
(4)
This procedure uses the built-In Test Equpment in the AVM signal conditioner.
(5)
The AVM signal conditioner shows the Built-In Test Equipment Maintenance Messages first and then the flight history.
(6)
This procedure refers to the Built-In Test Equipment as the BITE.
B.
Reference
(1)
FIM 77-00-00/101, Airborne Vibration Monitoring (AVM) System
C.
Access
(1)
Location Zones 117 Electrical and Electronics Compartment - Left 118 Electrical and Electronics Compartment - Right 211 Flight compartment - Left 212 Flight compartment - Right
D.
Prepare to Read the BITE Maintenance Messages
S 862-002-N00
(1) Make sure that this circuit breaker is closed:
(a) P6 Main Power Distribution Panel
1) 6H26, VIB AMP ENG 1 AND 2
2) 6H27, VIB AMP ENG 3 AND 4
S 012-003-N00
(2) Open the P6 Main Power Distribution Panel
(a)
6H26, VIB AMP ENG 1 AND 2
(b)
6H27, VIB AMP ENG 3 AND 4
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77-31-00
ALL ú ú N01 Page 201 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
E. Read the BITE Maintenance Messages
S 972-004-N00
(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.
(b)
After Self-Test?, push and release the NO button to show Fault History? on the front display of the AVM signal conditioner.
(c)
After Fault History?, push and release the NO button to show Flight History? on the front display of the AVM signal conditioner.
(d)
After Flight History?, push and release the NO button to show Balance? on the front display of the AVM signal conditioner.
(e)
After Balance?, push and release the NO button to show Turn Off Display? on the front display of the AVM signal conditioner.
(f)
After Turn Off Display?, push and release the YES button to turn off the display.
S 972-005-N00
(2) Do these steps to read the BITE maintenance messages (Table 202):
~................................................................. | BITE MAINTENANCE MESSAGES | | TABLE 202 | ................................................................... | MAINTENANCE MESSAGES | DESCRIPTION | ................................................................... |No Fault *[1] |No Faults in Non-Volatile Memory | ................................................................... | XX Faults Display? *[1] |XX=Total Number of Stored Faults | ................................................................... |Fault YY *[1] *[2] |YY=Fault Number | ................................................................... |AVM Syst Fault ZZ *[3] |ZZ=Fault Code | 2...............................….................................1
*[1] Display message only
*[2] Fault YY is the fault number
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