(b)  
Make sure the IN PROG light on the GPWC comes on.

 (c)  
If the CARD CHNG light on the GPWC comes on, do these steps to change the card:

 NOTE: When the CARD CHNG light comes on, it indicates that
____ more than one card is necessary to load the terrain database.
 1) Push the eject button on the GPWC and remove the card. 2) Insert the next card for the terrain database into the card slot on the GPWC. 3) Make sure the IN PROG light on the GPWC comes on.
 (d)  If the XFER FAIL light on the GPWC comes on, it indicates that the terrain database load has failed. You need to load the terrain database again.
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MAINTENANCE MANUAL

 (e)  
After the load of the terrain database is complete, make sure the IN PROG light on the GPWC goes off and the XFER COMP light comes on.

 (f)  
Push the eject button on the GPWC and remove the card.

 (g)  
Make sure the COMPUTER OK light on the GPWC is on and all the other lights are off.

 S 752-031
 (7)  Do this task: Verify the Terrain Database Part Number (AMM 34-46-00/201).
 TASK 34-46-00-702-021
 3. Verify the Terrain Database Part Number (Fig. 201)
_______________________________________
 A. General
 (1)  
This task provides instructions to verify the terrain database part number. The GPWC level 3 self-test provides aural annunciations of the current configuration that include the terrain database part number.

 (2)  
The GPWC level 3 self-test can only be activated when the airplane is on the ground.

 B. Standard Tools and Equipment
 (1)  Headphone - with 2 Connector 1/4 inch Audio
 Plug (commercially available)

 C. References
 (1)  AMM 34-46-00/501, Ground Proximity Warning System
 D. Access
 (1)  Location Zones 117 Electrical and Electronics Compartment, LH 118 Electrical and Electronics Compartment, RH
 E. Procedure
 S 862-022
 (1)  Make sure the ground proximity warning system (GPWS) is operational (AMM 34-46-00/501).
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 (2)  S 862-023Make sure the COMPUTER OK light on the front panel of the GPWC is on and the other lights are off.
 (3)  S 862-025Open the door on the front panel of the GPWC.
 (4)  S 862-026Plug the headphone into the headphone jack of the GPWC.
 (5)  S 862-027Make sure there is no card in the card slot of the GPWC.
 (6)  S 702-028Do these steps to do the level 3 self-test of the GPWC:
 NOTE:____ The GPWC self-test has six levels that operate in sequence. The level 3 self-test will occur after the level 2 self-test.
 (a) (b) (c) (d)  Push the self-test switch on the GPWC for one second.After the level 1 self-test starts, push the self-test switch for one second to go to the level 2 self-test.After the level 2 self-test starts, wait until the PRESS TO CONTINUE annunciation occurs, then push the self-test switch for one second to go to the level 3 self-test.You will hear a sequence of the configuration annunciations for the GPWS over the headphone. 1) Make sure you hear the terrain database part number after the TERRAIN DATABASE VERSION annunciation.
 NOTE:____ There are several configuration annunciations in the level 3 self-test. To advance to the terrain database part number annunciation, you need to push the self-test switch after each annunciation.

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