S 492-029

 (2)  
Make sure the chocks are below the wheels.

 S 862-030

 (3)  
Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed:

 (a)  
11C19, LANDING GEAR POS SYS 2 ALTN

 (b)  
11C30, LANDING GEAR POS SYS 1

 (c)  
11R36, PROX SW TEST

 (d)  
11S23, POS SYS 2

 S 862-031
 (4)  Supply electrical power (AMM 24-22-00/201).
 

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757 MAINTENANCE MANUAL
 F. Do the Test for the Truck Tilt Sensor
 NOTE: If a test of the auto-speedbrake sensor is required, do the
____ Operational Test - Auto-Speedbrake System (AMM 27-62-00/501).
 S 012-032
 (1)  
Open the access panel, 119BL, to get access to the PSEU
 (AMM 06-41-00/201).

 S 722-050

 (2)  
Do the test of the sensor with the actuator test tool.

___________________________
 NOTE: You can only do this test if the sensor is not installed in
____ its bracket or if the airplane is lifted on jacks. This test is used during the installation of the sensor.
 (a)  
Make sure the sensor is more than one inch away from all metal surfaces.

 (b)  
Set the sensor channel with the PSEU SENSOR CHANNEL SELECT dials.

 NOTE: Set the dials to the sensor number that you want to
____
 test.

 Sensor No. Sensor Description 064 Left gear, forward sensor 059 Right gear, forward sensor 062 Left gear, aft sensor 060 Right gear, aft sensor
 (c)  
Push the TARGET TEST switch and hold for one second.

 (d)  
Make sure the correct sensor number is shown on the LED display, and, after four seconds, the TARGET FAR light comes on.

 (e)  
Hold or install the actuator test tool on the face of the sensor.

 NOTE: You can use tape to attach the actuator to the sensor.
____
 (f)  
Push the TARGET TEST switch and hold for one second.

 (g)  
Make sure the correct sensor number is shown on the LED display, and, after four seconds, the TARGET NEAR light comes on.

 (h)  
Remove the actuator from the sensor.

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MAINTENANCE MANUAL

 S 722-051
 (3)  Do the test of the sensor with the deactuator tool.
________________________
 NOTE:____This test is not necessary after a sensor installation. You can use this test to find if a sensor will change from target near to target far.
 (a)  Set the sensor channel with the PSEU SENSOR CHANNEL SELECT dials.
 NOTE: Set the dials to the sensor number that you want to
____ test. Sensor No. Sensor Description
 064 Left gear, forward sensor 059 Right gear, forward sensor 062 Left gear, aft sensor 060 Right gear, aft sensor
 (b)  
Push the TARGET TEST switch and make sure the TARGET NEAR light comes on.

 (c)  
Put the deactuator on the sensor.

 (d)  
Push the TARGET TEST switch and make sure the TARGET FAR light comes on.

 (e)  
Remove the deactuator from the sensor.

 S 862-034
 (4)  Push the RESET switch on the front panel of the PSEU to erase the PSEU memory.
 NOTE: The display will flash the code EEE while the memory is
　
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