WX TEST PASS/ DEFECTIVE WXR TEST
TEST FAIL LRU(S) CONDITION PATTERN
(YELLOW) (CYAN)
WXR TEST BLANK TEST PASSED ON
WXR FAIL T/R RECEIVER/TRANSMITTER FAULT OFF/ON
WXR FAIL ANT ANTENNA FAULT OFF
WXR FAIL CTL CONTROL PANEL FAULT OFF
WXR FAIL ATT ATTITUDE INPUT FAULT ON
WXR FAIL WEAK CALIBRATION FAULT ON
ND TEST PASS/TEST FAIL MESSAGES
1 DISPLAY SHOWS TEST PATTERN REMOVED FOR CERTAIN R/T FAULTS. SOME R/T FAULTS WILL NOT REMOVE TEST PATTERN Weather Radar Test Displays Figure 11 (Sheet 2)
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WINDSHEAR POP-UP MODE WILL IMMEDIATELY EXIT THE SELF-TEST SEQUENCE.
Weather Radar Test Displays
Figure 11 (Sheet 3)
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VISUAL AND AURAL TEST MESSAGES TEST TIMING 0-2 SECONDS 2-12 SECONDS
ND (AMBER) WINDSHEAR OFF OFF
LIGHT MASTER WARNING ND & PFD WINDSHEAR (RED) OFF OFF ON ON
UPPER EICAS WINDSHEAR SYS (ADVISORY) ON OFF
LOWER EICAS WINDSHEAR PRED (STATUS) ON OFF
AURAL DISPLAY MONITOR RADAR GO AROUND - WINDSHEAR AHEAD, WINDSHEAR AHEAD (PAUSE) WINDSHEAR AHEAD,
OR
WINDSHEAR AHEAD WINDSHEAR AHEAD,
DISPLAY TEST PATTERN TEST PATTERN
PWS Test Sequence
Figure 12
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(e) R ADF/VOR - OFF
(f) TERR switch - off
(6) Shut down the following interface systems if operation is no longer
required.
(a) Inertial Reference System (AMM 34-21-00/501)
(b) Flight Management Computer System (AMM 34-61-00/501)
(c) Integrated Display System (AMM 31-61-00/501)
(d) Centeral Maintenance Computer System (AMM 45-10-00/501)
(7) Shut down the following interface systems if operation is no longer
required.
(a) Modular Avionics Warning Electronics Assembly (AMM 31-51-00)
(b) EFIS/EICAS Interface Unit (AMM 31-61-00)
(c) Air Data System (AMM 34-12-00)
(d) Radio Altimeter System (AMM 34-33-00)
(e) Traffic Alert & Collision Avoidance System (AMM 34-45-00)
(f) Enhanced Ground Proximity Warning System (Enhanced GPWS)
(AMM 34-46-00)
(8) Remove external electrical power if no longer required
(AMM 24-22-00/201, Apply Power).
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747-400 FAULT ISOLATION/MAINT MANUAL
WEATHER RADAR SYSTEM
* SEE THE WDM EQUIPMENT LIST
PASSENGER AIRPLANE FREIGHTER
Weather Radar System - Component Index Figure 101
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