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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
EHSI - STATUS AND FAULT DISPLAY
ANNUNCIATION ANNUNCIATION MEANING OF THE DISPLAY WXR DATA ORDER OF PRIORITY OF MESSAGE
LINE 2 (YELLOW) LINE 3 (YELLOW) LINE 4 (YELLOW)
WXR FAIL WEAK CALIBRATION FAULT DISPLAYED FIRST PRIORTY
WXR FAIL ATT ATTITUDE INPUT FAULT DISPLAYED SECOND PRIORTY
WXR FAIL STAB STABILIZATION OFF DISPLAYED THIRD PRIORTY
WXR FAIL RT FAULT RECEIVER/TRANSMITTER REMOVED MESSAGE INHIBITED WXR WEAK, ATT AND STAB
WXR FAIL CONT CONTROL FAULT REMOVED
WXR FAIL ANT ANTENNA FAULT REMOVED
WXR DSPY THRESHOLD EHSI TEMP ABOVE 1ST (75`C) 30 SEC REMOVED AFTER ALL OTHER WXR MESSAGES INHIBITED
BLANK BLANK THRESHOLD EHSI TEMP ABOVE 2ND (100`C) DISPLAY OFF ENTIRE EHSI
STATUS AND FAULT MESSAGES
MESSAGE (LINE 1) COLOR WXR DATA DISPLAY CONDITION EFIS MODE
DISAGREE WXR RANGE YELLOW REMOVED WXR XCVR RANGE PROCESSED DISAGREES WITH EFIS CP SELECTED RANGE AND CTR MAP NAV, VOR/ILS MAP,
WXR/MAP RANGE DISAGREE YELLOW REMOVED CP SELECTED RANGE SELECTED RANGE BOTH DISAGREE WITH EFIS WXR XCVR RANGE PROCESSED AND FMC MAP
RANGE DISAGREEMENT MESSAGES
Weather Radar EHSI Status and Fault Messages Figure 7
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH EFIS ú
34-41-02
ú ú 04A Page 33 ú Mar 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
MAGENTA
RED
YELLOW
GREEN RANGE ARCS
STATUS OR FAIL MESSAGE
FAILED LRU'S
HALF SELECTED RANGE SCALE
NORMAL TEST DISPLAY FAILURE DISPLAY
(YELLOW) PASS/FAIL WXR TEST (CYAN) DEFECTIVE LRU(S) CONDITION WXR TEST PATTERN
WXR FAIL WXR FAIL WXR FAIL WXR FAIL WXR FAIL WXR TEST WXR FAIL STAB WEAK BLANK RT ANT CONT ATT STABILIZATION SWITCH OFF CALIBRATION FAULT TEST PASS ANTENNA FAULT CONTROL FAULT ATTITUDE INPUT FAULT RECEIVER/TRANSMITTER FAULT ON OFF ON OFF OFF OFF OFF
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