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时间:2011-03-29 14:39来源:蓝天飞行翻译 作者:航空
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R repetitive:
R - replace the starter shutoff valve (Ref. AMM TASK 80-11-20-000-003)
R and (Ref. AMM TASK 80-11-20-400-003).

R (a) If the fault continues during the subsequent flights:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001) and
R (Ref. AMM TASK 73-21-60-400-001).

R (b) If the fault continues during the subsequent flights:
R - replace the harness HJ9 (channel A) (Ref. AMM TASK 73-21-50-R 000-042) and (Ref. AMM TASK 73-21-50-400-042).

R (3) If the failure message START AIR, SAV is confirmed:

R (a) If freezing conditions are present:
R - manually operate the starter shutoff valve (Ref. AMM TASK 80-R 11-00-040-045).

R 1_ If the starter shutoff valve handle does not move:
R - use a heat gun to warm up the starter shutoff valve.

R 2_ If the starter shutoff valve remains stuck:
R - replace the starter shutoff valve (Ref. AMM TASK 80-11-20-R 000-003) and (Ref. AMM TASK 80-11-20-400-003).

R (b) If freezing conditions are not present:
R - operate the starter shutoff valve (Ref. AMM TASK 80-11-00-040-R 045).

R 1_ If the starter shutoff valve handle does not move:
R - replace the starter shutoff valve (Ref. AMM TASK 80-11-20-R 000-003) and (Ref. AMM TASK 80-11-20-400-003).

R 2_ If the fault continues during the subsequent flights:
R - replace the ECU (4000KS) (Ref. AMM TASK 73-21-60-000-001)
R (Ref. AMM TASK 73-21-60-400-001).

R 3_ If the fault continues during the subsequent flights:
R - disconnect the harness HJ9 (channel A) from the ECU (4000KS)
R and visually examine the connector and receptacle of the
R harness HJ9 (channel A) for damaged pins or contamination
R (Ref. AMM TASK 73-21-50-210-001).

R a_ If damage is found:
R - repair or replace as required.

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R R R R b_  If no damage is found:- replace the harness HJ9 (channel A) (Ref. AMM TASK 73-21-50-000-042) and (Ref. AMM TASK 73-21-50-400-042). 
B. Do the test given in Para. 3.A.
 (1) No additional maintenance action is required if the fault is not confirmed.
 (2) Repeat the fault isolation procedure if the fault continues.

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 TASK 80-11-00-810-805

 Failure of the Control of the Starter Shutoff Valve Solenoid through the
 Channel A on Engine 1
 1. Possible Causes
_______________

 - ECU (4000KS)

 - harness J9


 - starter shutoff valve


 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 73-21-50-000-042 Removal of the HJ9 Harness
 AMM 73-21-50-400-042 Installation of the HJ9 Harness

R  AMM 73-21-60-000-001 Removal of the Electronic Control Unit (ECU)(4000KS) AMM 73-21-60-400-001 Installation of the Electronic Control Unit
R (ECU)(4000KS) AMM 73-29-00-710-040 Operational Test of the FADEC on the ground (with Engine Motoring) AMM 80-11-20-000-003 Removal of the Starter Shutoff Valve AMM 80-11-20-400-003 Installation of the Starter Shutoff Valve ASM 74-31/01
 3. Fault Confirmation
__________________

 A. Do the operational test of the FADEC 1A on the ground (with engine motoring) (Ref. AMM TASK 73-29-00-710-040).
 4. Fault Isolation
_______________

 A. If the test gives the maintenance message SAV (SOL), J9, ECU:
 - do a check for open or short to ground of the harness J9 between the ECU (4000KS) and the starter shutoff valve solenoid, pins J9/11, 12 to pins J9/1, 2 (Ref. ASM 74-31/01).
 (1) If the wiring is not correct:

 - repair the above wiring.

 (2) If the wiring is correct:


 - disconnect the harness J9 from the ECU (4000KS) and do a check of the ECU resistance cable between: . pins 11 and 12 (15 to 60 Ohms) . pins 11 and 3 (> 10 Megohms) . pins 11 and ground (> 10 Megohms).
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