You see the MAIN MENU when you select APU from the MAINT BITE INDEX if the last APU shutdown was normal and the APU MAINT light is off.
You see the FAULT HISTORY page in place of the MAIN MENU if the last APU shutdown was a protective shutdown. FAULT HISTORY page gives the cause for the protective shutdown.
You see the CURRENT STATUS page in place of the MAIN MENU if the APU MAINT light is on and the last APU shutdown was normal. The CURRENT STATUS page gives the cause of the MAINT light.
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737-700 MAINTENANCE TRAINING MANUAL
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APU CONTROLS-ELECTRONICCONTROL UNIT - MAIN MENU
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737-700 MAINTENANCE TRAINING MANUAL
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
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737-700 MAINTENANCE TRAINING MANUAL
APU CONTROLS - ELECTRONIC CONTROL UNIT -CURRENT STATUS
A49-60-00-010.fm
General
The CURRENT STATUS page of APU MCDU BITE shows the maintenance message the ECU finds for the last APU cycle. The maintenance message stays in the current status until the ECU tests the condition again and finds that it is satisfactory. There are over 200 possible maintenance messages.
One maintenance message shows on each page. The MCDU shows the page number of the maintenance message in the upper right corner of the display followed by the total number of pages in CURRENT STATUS.
Select the line select key next to OTHER OCCURRENCES to see a list of other APU start attempts with the same maintenance message. If there are no other APU start attempts with the same maintenance message, the ECU shows NO OTHER OCCURRENCES when you select the OTHER OCCURRENCES line select key.
Select the line select key next to INDEX to go to the APU MAIN MENU.
The CURRENT STATUS page gives the following information about the maintenance message:
-Flight deck effect
-Maintenance message number
-Description of the maintenance message
-Instructions for how to verify the repair if the ECU can not test the
condition in the current mode.
These are the possible flight deck effects:
-APU GEN OFF BUS LIGHT APU GEN OFF BUS LIGHT
- FAULT LIGHT
- LOW OIL PRESSURE LIGHT
- MAINT LIGHT
- NO BLEED
- NO FLIGHT DECK EFFECT
- OVERSPEED LIGHT
- UNKNOWN FLT DECK EFFECT
The flight deck effect shows APU GEN OFF BUS LIGHT if the maintenance message causes the GEN OFF BUS light to come on. FAULT LIGHT The flight deck effect shows FAULT LIGHT if the maintenance message 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-700 MAINTENANCE TRAINING MANUAL BITE HANDBOOK 机务培训手册 自测手册(97)
