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E TASK 73-25-00-810-855 Failure of the EIU on Engine 1

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 1. Possible Causes
_______________
 - EIU-1 (1KS1)
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM  73-25-34-000-040 Removal of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-25-34-710-043 Operational Test of the Engine Interface Unit
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the Engine Interface Unit (EIU) through the Centralized Fault Display System (CFDS) (Ref. AMM TASK 73-25-34-710-043).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message EIU 1:
 - replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
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 E E Feb 01/98 E E ECES
E TASK 73-25-00-810-856 Failure of the EIU on Engine 2

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 1. Possible Causes
_______________
 - EIU-2 (1KS2)
 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM  73-25-34-000-040 Removal of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-25-34-710-043 Operational Test of the Engine Interface Unit
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the Engine Interface Unit (EIU) through the Centralized Fault Display System (CFDS) (Ref. AMM TASK 73-25-34-710-043).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message EIU 2:
 - replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
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 TASK 73-25-00-810-857
 Failure of the Annunciator Light Test and Interface Board for Engine 1
 1. Possible Causes
_______________
 - BOARD-ANN LT TEST & INTFC (8LP)

 - EIU-1 (1KS1)

 - wiring from the EIU-1 (1KS1) to the board (8LP)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 33-14-33-000-001 Removal of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP, R 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP) AMM 33-14-33-400-001 Installation of the Annunciator-Light Test and Interface-Board (1LP, 2LP, 3LP, 4LP, 5LP, 6LP, 7LP, R 8LP, 9LP, 10LP, 11LP, 12LP, 18LP, 19LP, 20LP) AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU) (1KS1,1KS2) AMM 73-25-34-400-040 Installation of the Engine Interface Unit (EIU)
 (1KS1,1KS2)
 AMM 73-25-34-710-043 Operational Test of the Engine Interface Unit
 ASM 73-25/09

 3. Fault Confirmation
__________________
 A. Do the operational test of the engine interface unit through the CFDS (Ref. AMM TASK 73-25-34-710-043).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message CHECK 8LP RELAY CIRCUIT OR EIU
 1:

 - replace the BOARD-ANN LT TEST & INTFC (8LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001)
　
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