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时间:2011-08-16 12:28来源:蓝天飞行翻译 作者:航空
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1)  If the tilt code does not show, then you corrected the fault.
-------------------------END OF TASK ---------------------------817. No Thrust Input from the Autothrottle -Fault Isolation
EFFECTIVITY SIL ALL  34-43 TASK 816 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 253 Feb 15/2011 

 

A.  Description
(1)  
This task is for this observed fault:

(a)  Tilt Code of ‘‘-5’’ Autothrottle -Left or Right.

(2)  
No thrust data is detected from the autothrottle microswitches by the weather radar receiver/ transmitter.


B.  Possible Causes
(1)
Wiring.

(2)  
Autothrottle microswitch assembly, M1766 (left) or M1767 (right).

(3)  
Weather radar receiver/transmitter, M101.


SIL 014, 015, 020
(4)  Left (Right) Weather radar receiver/transmitter, M101 (M460).
SIL ALL
C.  Circuit Breakers
(1)  These are the primary circuit breakers related to the fault:
CAPT Electrical System Panel, P18-3
Row Col Number Name

SIL 014, 015, 020
C 7 C01678 WEATHER RADAR RT RIGHT
F/O Electrical System Panel, P6-1
Row Col Number Name

SIL ALL
D 13 C00120 WEATHER RADAR RT
F/O Electrical System Panel, P6-3 Row Col Number Name A 18 C00583 LANDING GEAR AUTOBRAKE BITE CONT 1
D.  Related Data
(1)
(SSM 34-41-11).

(2)
(WDM 34-41-11).


E.  Fault Isolation Procedure
(1)  Do this check of the wiring between the weather radar receiver/transmitter and the autothrottle microswitch assembly:
(a)  
Remove the weather radar receiver/transmitter, M101. To remove it, do this task: Weather Radar Receiver/Transmitter Removal, AMM TASK 34-43-41-000-801.

(b)  
Disconnect the left and right autothrottle microswitch, M1766 (M1767). To disconnect it, do this task: Switch Removal, AMM TASK 76-11-07-020-801-F00.

(c)  
Do a wiring check between these pins on connector D189B for the weather radar receiver/ transmitter, in the forward equipment center, and connector D11128 (left) and D11132 (right) for the autothrottle microswitch assembly at switch pack #1 and #2 (WDM 34-41-11).

(d)  
If you find a problem with the wiring, then do these steps: 1) Repair the wiring. 2) Re-install the weather radar receiver/transmitter, M101. To install it, do this task:


EFFECTIVITY SIL ALL  34-43 TASK 817 
D633A103-SIL BOEING PROPRIETARY -Copyright # Unpublished Work -See title page for details  Page 254 Feb 15/2011 

 

LEFT AUTO  D189B  D11128 
THROTTLE 
pin B9  ------------------ pin 18 

RIGHT AUTO  D189B  D11132 
THROTTLE 
pin B10  ----------------- pin 18 

Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801. 3) Re-install the left and right autothrottle microswitch, M1766 (M1767). To connect it, do this task: Switch Installation, AMM TASK 76-11-07-400-801-F00. 4) Do this task: Weather Radar (WXR) System -Operational Test, AMM
TASK 34-43-00-710-802-001 or Weather Radar (WXR) System -Operational Test,
AMM TASK 34-43-00-710-803-002.
a) If the weather radar operational test passes, then you corrected the fault.

(e)  If you do not find a problem with the wiring, then continue.
1)  Re-install the weather radar receiver/transmitter, M101. To install it, do this task: Weather Radar Receiver/Transmitter Installation, AMM TASK 34-43-41-400-801.
2)  Re-connect the left and right autothrottle microswitch, M1766 (M1767). To connect it, do this task: Switch Installation, AMM TASK 76-11-07-400-801-F00.
 
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