757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 1(40)

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 *[1] Measure between the pins X1 (+) and X2 (gnd)
 ~....................................................................... | Table 2 | | System 2 Relays (P37) | ......................................................................... | Column | ......................................................................... | A | B (Vdc) | C1 (Vdc) | C2 (Vdc) | D (Vdc) | E (Vdc) | ......................................................................... | D2676 of K10239 | 28.0 | 0.0 | 0.0 | 28.0 | 0.0 | | D632 of K10203 | 0.0 | 0.0 | 28.0 | 0.0 | 0.0 | | D1866 of K263 | 28.0 | 0.0 | 0.0 | 28.0 | 0.0 | | D636 of K214 | 28.0 | 0.0 | 0.0 | 28.0 | 0.0 | | D1870 of K219 | 0.0 | 28.0 | 28.0 | 28.0 | 28.0 | | D616 *[1] of | 28.0 | 0.0 | 0.0 | 28.0 | 0.0 | | K203 | | | | | | | D1872 of K215 | 28.0 | 0.0 | 0.0 | 0.0 | 0.0 | | D4674 of K10386 | 28.0 | 28.0 | 0.0 | 28.0 | 0.0 | 2.................…..........…..........…..........…..........….........1
 *[1] Measure between the pins X1 (+) and X2 (gnd)
 S 865-012
 (2)  
Erase the EICAS (Engine Indication and Crew Alerting System) memory.

 (a)  
Push ECS/MSG to set the format.

 (b)  
Push EVENT READ-AUTO to set the format.

 (c)  
Write down the EICAS messages shown on the non-volatile EICAS message list.

 (d)  
Push and hold the ERASE switch until the EICAS messages go out of view.

 (e)  
Do the last three steps again, until all the EICAS memory has been erased.

 

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 S 865-013
 (3)  Move the EICAS computer select switch to the L position.
 (a)  Make sure the NOSE A/G DISAGREE, AIR/GND DISAGREE, NOSE A/G
 SYS, and AIR/GND SYS messages are not shown on the EICAS.
 S 865-014
 (4)  Move the EICAS computer select switch to the R position.
 (a)  Make sure the NOSE A/G DISAGREE, AIR/GND DISAGREE, NOSE A/G
 SYS, and AIR/GND SYS messages are not shown on the EICAS.
 S 965-015
 (5)  Install or remove the switch actuators or deactuators on the
 proximity sensors as shown below:
 ~..........................................................
 | SENSOR  |  LOCATION  |  ACTUATOR  |  DEACTUATOR  |
 ............................................................
 | S10067  |  Nose Gear  |  Install  |  - - |
 2.........…..............…..............…..................1

 S 865-016
 (6)  
Make sure the NOSE A/G DISAGREE message is shown on the EICAS.

 S 865-071

 (7)  
Make sure the NOSE A/G SYS message shows on the EICAS.

 S 865-017

 (8)  
Move the EICAS computer select switch to the L position.

 (a)  
Make sure the NOSE A/G DISAGREE message is shown on the EICAS.

 (b)  
Make sure the NOSE A/G SYS message shows on the EICAS.

 S 765-018
 (9)  
Use a volt/ohmmeter to measure the voltage between pins 6 (+ voltage) and 12 (ground). The connectors to be measured are in column A of Tables 1 and 2. The measured voltage of each connector must be the same as the voltage shown in column C1 of Table 1 and column B of Table 2.

 S 865-019

 (10)
 Pressurize the left hydraulic system (Ref 29-11-00).

 

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