S 865-005
 (2)  
Supply the electrical power (AMM 24-22-00/201).

 C.
Procedure

 S 865-014
 (1)  Turn the MODE SELECT selector, on the pilot's overhead control panel, P5, to the MAN position.
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MAINTENANCE MANUAL

 (2)  S 865-015Turn and hold the MANUAL selector, on the P5 panel, to the DESCEND position. (a) Make sure the VALVE position indicator moves to the CL position within twenty-five (25) seconds.
 NOTE:____ Different part number combinations of the cabin pressure controller and the outflow valve installed on the aircraft can cause the VALVE position indicator needle to point differently at the "CL/OP" positions.
 Refer to Figure 502 for the normal position of the VALVE position indicator needle at the "CL/OP" positions when different part number combinations of the cabin pressure controller and outflow valve are installed on the aircraft.
 (3)  S 865-016Release the MANUAL selector. (a) Make sure the cabin-pressure outflow-valve is fully closed.
 (4)  S 865-017Turn and hold the MANUAL selector to the CLIMB position. (a) Make sure the VALVE position indicator moves to within 2 -needle widths of the OP position within twenty-five (25) seconds.
 NOTE:____ Different part number combinations of the cabin pressure controller and the outflow valve installed on the aircraft can cause the VALVE position indicator needle to point differently at the "CL/OP" positions.
 Refer to Figure 502 for the normal position of the VALVE position indicator needle at the "CL/OP " positions when different part number combinations of the cabin pressure controller and outflow valve are installed on the aircraft.
 (5)  S 865-018Release the MANUAL selector. (a) Make sure the cabin-pressure outflow-valve is fully open.
 (6)  S 865-019Turn the MODE SELECT selector, on the P5 panel, to the AUTO 1 or AUTO 2 position.

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 D. Put the Airplane Back to Its Usual Condition
 S 415-082
 (1)
Close the main equipment center access door (AMM 06-41-00/201).

 S 865-022

 (2)  
Remove the electrical power if it is not necessary
 (AMM 24-22-00/201).

 TASK 21-31-00-735-023
 4.  System Test - Pressurization Control System___________________________________________
 A. References
 (1)  
AMM 06-41-00/201, Fuselage (Major Zone 100 and 200) Access Doors and Panels

 (2)  
AMM 06-46-00/201, Entry, Service, and Cargo Doors (Major Zone 800) Access Doors and Panels

 (3)  
AMM 24-22-00/201, Electrical Power Control

 (4)  
AMM 27-61-00/201, Spoiler/Speedbrake Control System

 (5)  
AMM 31-41-00/201, Engine Indication and Crew Alerting System

 B.
Prepare for Test

 S 865-024
 (1)  
Make sure that these circuit breakers are closed:

 (a)  
On the overhead circuit breaker panel, P11: 1) 11B14, CABIN ALTITUDE CONTROL MANUAL 2) 11B15, CABIN ALTITUDE CONTROL SELECT 3) 11N15, CABIN ALTITUDE CONTROL AUTO 1 4) 11N24, CABIN ALTITUDE CONTROL AUTO 2 5) 11S15, AIR/GND SYS 1 6) 11S19, AIR/GND SYS 2

 S 865-066
 (2)  
Supply the electrical power (AMM 24-22-00/201).

 S 745-074

 (3)  
Do the BITE procedure on the auto-1 cabin pressure controller (Ref Operational Test)

 S 745-075

 (4)  
Do the BITE procedure on the auto-2 cabin pressure controller (Ref Operational Test)

 C.
Do the Cabin Altitude Failure Indication Test

 S 865-025
 (1)  
Make sure that these circuit breakers are closed:
　
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