C.  Procedure
 S 864-002
 (1)  Open these circuit breakers and attach DO-NOT-CLOSE tags:
 (a)  
P6 Circuit Breaker Panel:
 1) ATC 2

 (b)  
P18 Circuit Breaker Panel:
 1) ATC 1

 S 024-008
 CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE ATC
_______ TRANSPONDER. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE ATC TRANSPONDER.
 (2)  
Remove the ATC transponder (AMM 20-10-07/201).

 (3)  
Install dust caps on the electrical connectors.

 S 034-003
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737-300/400/500MAINTENANCE MANUAL
 TASK 34-53-21-404-004
 3. ATC Transponer Installation
___________________________
 A. References
 (1)  
AMM 20-10-07/201, E/E Rack Mounted Component

 (2)  
AMM 24-22-00/201, Electrical Power - Control

 B. Access
 (1)  
Location Zones
 205 Electronic Compartment

 (2)  
Access Panels
 1201 Electronics Equipment Access Door

 C. Procedure
 S 864-009
 (1)  Make sure these circuit breakers are open:
 (a)  
P6 Circuit Breaker Panel:
 1) ATC 2

 (b)  
P18 Circuit Breaker Panel
 1) ATC 1

 S 434-005
 CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE ATC
_______ TRANSPONDER. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE ATC TRANSPONDER.
 (2)  
Remove the dust caps from the electrical connectors.

 (3)  
Install the ATC transponder (AMM 20-10-07/201).

 S 864-018

 (4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 S 424-006
 (a)  P6 Circuit Breaker Panel
 1) ATC 2

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 (b)  P18 Circuit Breaker Panel
 1) ATC 1

 D. ATC Transponder Test
 S 864-010
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 744-012

 (2)
Push and hold the TEST switch on the applicable ATC transponder.

 (a)  Make sure the self-test passes and no faults are detected.
 S 744-007
 (3)  
Release the TEST switch on the ATC transponder.

 S 864-013

 (4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

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737-300/400/500MAINTENANCE MANUAL
 AIR TRAFFIC CONTROL (ATC) CONTROL PANEL - REMOVAL/INSTALLATION
______________________________________________________________
 1.  General_______
 A.  This subject has two tasks. The first task is the removal of the ATC control panel. The second task is the installation of the ATC control panel.
 B.  The ATC control panel, P8-29, is installed in the aft electronics panel, P8.
 C.  Electrical connections are made through multipin connectors on the rear of the control panel. The control panel is installed in the aft electronic control panel.
 TASK 34-53-31-004-001
 2.  ATC Control Panel Removal_________________________
　
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