YES
3 THE DISPLAY WILL SHOW
"Self Test?"
PUSH AND RELEASE THE "YES"
BUTTON.
UPON A SUCCESSFUL TEST COMPLETION (APPROXIMATELY 15 SECONDS), THE DISPLAY WILL SHOW "Test OK".
DOES "XX Faults Display" SHOW OR IS THE DISPLAY BLANK?
NO
SEE SHEET 12 (BLOCK 4)
AVM Indication Problem Figure 104 (Sheet 11)
L08397
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71-00-54
úCONDITIONERS, WITH AND WITHOUT EIS ú ú C01.1 Page 121 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 11
(BLOCK 3)
NO
YES
4 INTERROGATE THE AVM SIGNAL
SEE SHEET 13
CONDITIONER TO GET THE RECENT (BLOCK 55)
BITE MAINTENANCE MESSAGES (AMM 77-31-00/201). ARE THERE BITE MAINTENANCE MESSAGES PRESENT?
NO YES
5 SWAP THE AVM INDICATORS,
49 REPLACE THE AVM INDICATOR,
N160 OR N161 N160 OR N161
(AMM 77-31-04/401), OR DO THE (AMM 77-31-04/401), OR THE
BITE PROCEDURE FOR THE SECONDARY EIS, N183
SECONDARY EIS, N183 (AMM 31-42-02/401).
(AMM 23-42-00/501).
DOES THE DISCREPANCY FOLLOW THE INDICATOR OR ARE THERE FAULTS DETECTED?
NO YES YES
6 INTERROGATE THE AVM SIGNAL
27 INSTALL THE ALTERNATE
50 EXAMINE THE WIRING AND CONDITIONER TO GET THE RECENT NO. 1 BEARING (NOB) VIBRATION CONNECTORS BETWEEN THE AVM FLIGHT HISTORY (FFCCV) SENSOR, T332 SIGNAL CONDITIONER, M1240 AND (AMM 77-31-00/201).(AMM 77-31-01/401).THE FFCCV SENSOR, T332
DOES THE FLIGHT HISTORY DOES THE HIGH VIBRATION (WDM 77-31-11). CONSISTENTLY SHOW HIGH CONTINUE TO SHOW UP ON ONE OR VIBRATION OR "00" ON ONE OR TWO OF CN1 OR CN2?
TWO OF CN1 OR CN2?
NO
NOTE: IT IS POSSIBLE THAT THE FLIGHT HISTORY WILL DISPLAY "00" FOR ALL PARAMETERS FOR ONE OR TWO ENGINES AND NOT HAVE AN AVM INDICATION SYSTEM ANOMALY.
NO YES YES
7 INTERROGATE THE AVM SIGNAL
28 REPLACE THE TRF VIBRATION
52 EXAMINE THE WIRING AND
CONDITIONER TO GET THE RECENT (CORE) SENSOR, T331 CONNECTORS BETWEEN THE AVM
FLIGHT HISTORY (AMM 77-31-02/401).SIGNAL CONDITIONER, M1240 AND
(AMM 77-31-00/201). DOES THE HIGH VIBRATION THE CORE SENSOR, T331
DOES THE FLIGHT HISTORY CONTINUE TO SHOW UP ON ONE OR (WDM 77-31-11).
CONSISTENTLY SHOW HIGH TWO OF TN1 OR TN2?
VIBRATION OR "00" ON ONE OR
NO
TWO OF TN1 OR TN2?
NOTE: IT IS POSSIBLE THAT THE FLIGHT HISTORY WILL DISPLAY "00" FOR ALL PARAMETERS FOR ONE OR NO 54 EXAMINE THE WIRING AND
TWO ENGINES AND NOT CONNECTORS BETWEEN THE AVM
HAVE AN AVM INDICATION INDICATOR, N160 OR N161, ORSYSTEM ANOMALY.
SECONDARY EIS, N183 AND THE AVM SIGNAL CONDITIONER, M1240 (WDM 77-31-11).
AVM Indication Problem
Figure 104 (Sheet 12)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. úAIRPLANES WITH S360N021-113 AVM SIGNAL ú
71-00-54
úCONDITIONERS, WITH AND WITHOUT EIS ú ú C01.1 Page 122 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
L08400
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 12
(BLOCK 4)
YES
____PIN CONNECTIONS MUST BE COMPLETELY CLEANED TO CORRECT OR PREVENT AVM INDICATION PROBLEMS BEFORE
NOTE: YOU RECONNECT THEM.
FAULT EXTERNAL TO AVM SIGNAL CONDITIONER. EXAMINE THE
FAULT YY*
FAULT EXTERNAL TO AVM SIGNAL CONDITIONER. EXAMINE THE N1 TACHO
FAULT YY* FAULT EXTERNAL TO AVM SIGNAL CONDITIONER. EXAMINE THE
FAULT YY* FAULT EXTERNAL TO AVM SIGNAL CONDITIONER. EXAMINE THE
FAULT YY*
FAULT ZZ**
RESEAT AVM SIGNAL CONDITIONER. EXAMINE THE AIRPLANE POWER
05
ARINC OUTPUT
REPLACE THE AVM SIGNAL CONDITIONER, M1240 INOPERATIVE
(AMM 77-31-03/401)
16, 29 ANALOG METER
REPLACE THE AVM SIGNAL CONDITIONER, M1240 OUTPUT
(AMM 77-31-03/401) INOPERATIVE
17, 30 AIDS OUTPUT
REPLACE THE AVM SIGNAL CONDITIONER, M1240 INOPERATIVE
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