A49-60-00-013.fm
APU CONTROLS - ELECTRONIC CONTROL UNIT - IDENTCONFIG
January 1, 2004
49-60
- 15-
SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
APU CONTROLS - ELECTRONIC CONTROL UNIT - INPUT MONITORING THIS PAGE INTENTIONALLY LEFT BLANK
January 1, 2004
49-60
- 16 -
SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
APU CONTROLS - ELECTRONIC CONTROL UNIT -INPUT MONITORING
A49-60-00-014.fm
General
The INPUT MONITORING page of APU BITE TEST shows APU and airplane interface data. You use this data for troubleshooting of the APU and APU interfaces.
The MCDU shows the page number in the upper right corner of the display. The second number is the total number of pages in INPUT MONITORING.
INPUT MONITORING Page 1
INPUT MONITORING page 1 shows this APU data:
-SPEED (the speed the APU turns)
-EGT (exhaust gas temperature)
-IGV POSITION (inlet guide vane position with 90 degrees as
open)
-SCV POSITION (surge control valve position with 90 degrees as
full closed)
-DELTA PRESS (differential pressure in bleed duct)
-TOTAL PRESS (total pressure in bleed duct)
-INLET PRESS (APU air inlet pressure)
-INLET TEMP (APU air inlet temperature)
-FUEL TMC (fuel control unit metering valve torque motor current)
-FUEL FLOW.
INPUT MONITORING Page 2
INPUT MONITORING page 2 shows this APU data:
-APU Oil temperature
-FUEL TEMP (APU fuel temperature)
-GENERATOR LOAD (starter-generator load)
-START SWITCH (APU switch in START position, YES/NO)
-APU ON SWITCH (APU switch in ON position, YES/NO)
-APU OFF SWITCH (APU switch in OFF position, YES/NO)
-MES SWITCH(S) (main engine start switch positions,

OFF/1/2/BOTH)
-AIR/GROUND (airplane in air or on ground, AIR/GRD)
-LEFT PACK (left pack mode, OFF/LOW/HIGH)
-RIGHT PACK (right pack mode, OFF/LOW/HIGH).

INPUT MONITORING Page 3
INPUT MONITORING page 3 shows this APU data:
-BLEED COMMAND SWITCH position
-APU Bleed switch position, ON/OFF)
-INLET DOOR OPEN (APU air inlet door open, YES/NO)
-DOOR NOT FULL OPEN (APU air inlet door not full open,

YES/NO) -FIRE COCKPIT (flight compartment fire handle pulled, YES/NO) -FIRE REMOTE HANDLE (remote fire handle pulled, YES/NO) -FIRE DETECTION (fire detected by fire detection system,
YES/NO) -AIRPLANE MODEL (600/700/800) -BLEED AIR VALVE (bleed air valve position, OPEN/CLOSE) -FUEL VALVE CLOSED (fuel shutoff valve in closed position,
　
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