CABIN SELECTOR PANEL (EXAMPLE)

Valve Position Indications for Mixed Cabin Pressure Controller/
Outflow Valve Combinations
Figure 502 (Sheet 1)

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757
MAINTENANCE MANUAL

CABIN PRESSURE CONTROLLER/OUTFLOW VALVE COMBINATIONS  CABIN PRESSURE SELECTOR PANEL  OPEN VALVE POSITION INDICATOR  CLOSED 
S210T160-83, -113 CPC S210T160-114 OFV  S210T160-42 S210T160-62 S210T160-52  CL OP  CL OP 
S210T160-72  CL OP  CL OP 
S210T160-64, -74, -84, -94 OFV S210T160-83,-113 CPC  S210T160-42 S210T160-62 S210T160-52  CL OP  CL OP ACCEPTABLE RANGE 
S210T160-72  CL OP  OP CL 
S210T160-114 OFV S210T160-93 CPC S210T160-63 CPC  S210T160-42 S210T160-62 S210T160-52  CL OP  OP CL 
S210T160-72  CL OP  OP CL 

TABLE A
Valve Position Indications for Mixed Cabin Pressure Controller/
Outflow Valve Combinations
Figure 502 (Sheet 2)

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757 MAINTENANCE MANUAL
 (2)  S 865-054Make sure that the circuit breakers in the Prepare for Test paragraph have been closed for two minutes or more.
 (3)  S 745-055Push the PRESS TEST switch, on the auto-1 (auto-2) cabin-pressure controller. (a) Make sure that all eight LED lights on the controller, seven red and one green, come on. 1) If any lights do not come on, replace the controller.
 (4)  S 745-056Push the BIT switch. (a) Make sure that the green NO FAULT light comes on for approximately 30 seconds.
 (5)  S 745-057Push the VERIFY switch. (a) Make sure the red VERIFY MODE light comes on for approximately 25-30 seconds. (b) Make sure that the cabin-pressure-outflow valve moves a short distance. (c) Make sure the green NO FAULT light comes on for approximately 30 seconds after the VERIFY MODE light goes off. (d) If the green light does not come on or if any red lights do come on, then replace the applicable component.
 (6)  S 745-058Turn the MODE SELECT selector, on the P5 panel, to the AUTO 2 (AUTO 1) position.
 (7)  S 745-059Push the VERIFY switch on the auto-1 (auto-2) cabin pressure controller. (a) Make sure that the red VERIFY MODE light flashes while the switch is pushed.
 (8)  S 745-060Do the BITE test for the other AUTO mode.

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757 MAINTENANCE MANUAL
 D. Put the Airplane Back to Its Usual Condition
 S 415-061
 (1)  
Close the E5 rack access panel.

 S 415-062

 (2)
Close the No. 1 cargo door, 821 (AMM 06-46-00/201).

 S 865-071

 (3)  
Remove the electrical power if it is not necessary

 (AMM 24-22-00/201). ú ú TASK 21-31-00-715-001 ú3. Operational Test - Pressurization Control System (Figs. 501, 502)
 A. References
 (1)  
AMM 24-22-00/201, Electrical Power Control

 B.
Prepare for Test

 S 865-002
 (1)  
Make sure that these circuit breakers, on the pilot's-overhead-circuit-breaker panel, P11, are closed:

 (a)  
11B14, CABIN ALTITUDE CONTROL MANUAL

 (b)  
11B15, CABIN ALTITUDE CONTROL SELECT

 (c)  
11N15, CABIN ALTITUDE CONTROL AUTO 1

 (d)  
11N24, CABIN ALTITUDE CONTROL AUTO 2

 (e)  
11S15, AIR/GND SYS 1

 (f)  
　
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