2.3.4 EGPWC Front Panel.............................................................................................................................. 18
2.3.5 Self-Test Functions................................................................................................................................19
3 FAULT ISOLATION (TROUBLESHOOTING)...................................................................................................... 20
3.1 GENERAL ................................................................................................................................................................ 20
3.2 TROUBLESHOOTING GUIDE ......................................................................................................................................20
3.3 LEVEL 1 SELF-TEST -GO/NO GO TEST ..................................................................................................................... 21
3.3.1 self-test Preamble..................................................................................................................................21
3.3.2 Short Level 1 Self-Test .......................................................................................................................... 22
3.3.3 Long Level 1 Self-Test...........................................................................................................................23
3.4 LEVEL 2 SELF-TEST -CURRENT FAULTS...................................................................................................................23
3.4.1 Current Faults - Internal.........................................................................................................................24
3.4.2 Current Faults - External........................................................................................................................ 25
3.5 LEVEL 3 SELF-TEST - SYSTEM CONFIGURATION.......................................................................................................30
3.6 LEVEL 4 SELF-TEST - FAULT HISTORY ..................................................................................................................... 32
3.7 LEVEL 5 SELF-TEST - ALERT HISTORY.....................................................................................................................32
3.8 LEVEL 6 SELF-TEST - DISCRETE INPUT TEST ........................................................................................................... 33
3.8.1 ARINC 552 / ALT 55 Radio Altitude Validity Flag discretes................................................................... 33
3.8.2 GND Landing Gear Discrete..................................................................................................................34
3.8.3 +28V Landing Gear Discrete ................................................................................................................. 34 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：增强型近地警告系统 Enhanced Ground Proximity Warning 航线维护手册 Systems Line Maintenance Manual(3)
