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On the MCDU, on the NAV page:  On the MCDU:
 - push the line key adjacent to the  - the GPWC page comes into view.
 GPWC indication.
 - push the line key adjacent to the  - the subsequent GPWC TEST pages with
 TEST indication.  instructions come into view.
 - push the line key adjacent to the  - the TEST IN PROGRESS 20S indication
 START TEST indication,  comes into VIEW.
 - after 20s obey the instructions that
 are shown on the subsequent pages
 until the TEST OK indication comes
 into view.
 **ON A/C ALL
 5. Close-up________
 Subtask 34-48-00-860-064

 A. Put the aircraft back to its initial configuration.
 (1)
 On the center pedestal, on the MCDU, push the line key adjacent to the RETURN indication until the MCDU MENU page comes into view.

 (2)
 On the overhead panel, on the ADIRS CDU, set the OFF/NAV/ATT selector switch related to the ADIRU1 to OFF (Ref. TASK 34-10-00-860-005).

 (3)
 De-energize the aircraft electrical circuits
 (Ref. TASK 24-41-00-862-002).

 

 1EFF : ALL 1 34-48-00Page 537 1 1 Aug 01/05 1 1 1CES 1

 (4) Make sure that the work area is clean and clear of tool(s) and other

 items.

 1EFF : ALL 1 34-48-00Page 538 1 1 Aug 01/05 1 1 1CES 1

 COMPUTER - GROUND PROXIMITY WARNING (GPWC) (1WZ) - REMOVAL/INSTALLATION
_______________________________________________________________________ TASK 34-48-34-000-001 Removal of the GPWC (1WZ)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s)
 No specific access platform 1.6 m (5 ft. 3 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
34-48-34-991-001 Fig. 401
 3. Job Set-up
__________ Subtask 34-48-34-865-050
 A. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU EIS/GPWS/115VAC 3WZ P07 121VU EIS/GPWS/28VDC 2WZ P06
 1EFF : ALL 1 34-48-34Page 401 1 1 Feb 01/98 1 1 1CES 1 Subtask 34-48-34-010-050

 B. Get Access
 (1)
 Put the access platform in position at the access door 824 in zone

 128.

 (2)
 Open the access door 824.

 4. Procedure
_________ R (Ref. Fig. 401/TASK 34-48-34-991-001) Subtask 34-48-34-020-050
 A. Removal of the GPWC
 (1)
 Loosen the nut (4).

 (2)
 Lower the nut (4).

 (3)
 Pull the GPWC (1) on its rack (3) to disconnect the electrical connectors (2).

 (4)
 Remove the GPWC (1) from its rack (3).

 (5)
 Put blanking caps on the disconnected electrical connectors (2).

 1EFF : ALL 1 34-48-34Page 402 1 1 Aug 01/99 1 1 1CES 1

 GPWC
 Figure 401/TASK 34-48-34-991-001
 1EFF :  ALL  1  34-48-34 Page 403 
1  1  Feb 01/98
 1  1
 1CES  1

 

 TASK 34-48-34-400-001
 Installation of the GPWC (1WZ)
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE  QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific  access platform 1.6 m (5 ft. 3 in.)
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
R  34-48-00-610-001 Uploading of the Enhanced GPWC Database 34-48-00-710-001 Operational Test of GPWS Ground Self-test Function 34-48-00-710-001 Operational Test of Enhanced GPWS Ground Self-test
　
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