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Use the self-test button on the front panel of the GPWC or the self-test button on the GPW module to get access to levels 2-6. The self-test button has these two modes:
-Short cancel - push the button for less than two seconds
-Long cancel - push the button for more than two seconds.

Use the self-test buttons for these functions:
-Start self-test level one
-Go to the next item or flight leg within a test
-Go to the next self-test level
-End the self-test.
737-700 MAINTENANCE TRAINING MANUAL
When test level 1 ends, there is no aural message, push the test button to continue. If you do not push the self-test button within three seconds, self-test ends. When test levels 2 through 5 end, there is an aural message PRESS TO CONTINUE. Push the self-test button to go to the next test level.
Level Two Self-test -Current Faults
A level two test begins with the aural message, CURRENT FAULTS. If there are no current faults, you hear the aural message NO FAULTS. If there are faults, the GPWC annunciates the faults one at a time. A short or long cancel ends the level two test.
Level Three Self-test -System Configuration
A level three test annunciates the GPWS configuration. A level three test begins with the aural message SYSTEM CONFIGURATION. A short cancel causes the test to go immediately to the next configuration item. A long cancel ends the level three test. A level three test provides this information:
-GPWC part number
-GPWC modification status
-GPWC serial number
-Application software version
-Configuration software version
-Terrain database version
-Envelope modulation database version
-Boot code version
-Aircraft type
-Audio menu
-Altitude callout menu number
-Selected options.
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL

GPWS - SELF-TEST -LEVELS 2-5
Level Four Self-test - Fault History A short cancel cause the test to go immediately to the next flight leg. A long cancel ends test level four. Level four test shows the GPWS fault history over the last ten flights.
A level four test begins with the aural message FAULT HISTORY. If there are no faults in the flight history memory, you hear the aural message NO FAULTS. If there are faults in the flight history memory, you hear the most recent faults annunciate first. You hear the faults in this order:
-FLIGHT X (X is the most recent flight leg number)
-Internal faults for flight X
-External faults for flight X
-Go to next oldest flight leg and repeat.

A short cancel causes the test to go immediately to the next flight leg. A long cancel ends test level four.
Level Five Self-test - Warning History
Level five test show GPWS alerts over the last ten flights.
A level five test begins with the aural message WARNING HISTORY. If there are no alerts in the flight history memory, you hear the aural message NO WARNINGS. If there are alerts in the flight history memory, you hear the most recent alerts first. You hear the alerts in this order:
-FLIGHT X (X is the most recent flight leg number)
-GPWS alerts for flight X
-Go to next oldest flight leg and repeat.

A34-46-00-037.fm
January 2005
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
SOUTHWEST AIRLINES.
737-700 MAINTENANCE TRAINING MANUAL
EXTERNAL FAULT
E N H A N C E D
COMPUTER

OK
COMPUTER FAIL
PUSH TO EJECT
PRESS TO SELF TEST
SELF TEST BUTTON
OK PROG
HEADPHONE
HEADPHONES
JACK
CARD CHNG
XFER COMP
XFER FAIL
P1

A34-46-00-037.fm
GPWS - SELF-TEST - LEVELS 2-5
January 2005
　
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