Failure of the N2 Speed Condition Relay for Engine 2
1. Possible Causes
_______________
- EIU-2 (1KS2)
- RELAY-N2 SPEED CONDTN (2709GJ)
- wiring from the EIU-2 (1KS2) to the relay (2709GJ)
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
ASM 29-12/02
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 2709GJ RELAY CIRCUIT OR EIU 2:
- replace the RELAY-N2 SPEED CONDTN (2709GJ) (Ref. ASM 29-12/02).
(1) If the fault continues:
- replace the EIU-2 (1KS2) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(2) If the fault continues:
- do a check and repair the wiring from the EIU-2 (1KS2) to the relay (2709GJ) pin AB/9E to pin Z.
B. Do the test given in Para. 3.A.
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TASK 73-25-00-810-861
Failure of the HP Fuel SOV Closed Discrete Output on the EIU 1
1. Possible Causes
_______________
- CONT-ZONE TEMPERATURE (8HK)
- EIU-1 (1KS1)
- wiring from the EIU-1 (1KS1) to the zone temperature controller (8HK)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-63-34-000-001 Removal of the Zone Controller (8HK)
AMM 21-63-34-400-001 Installation of the Zone Controller (8HK)
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 ZONE CONT 8HK/EIU 1 CIRCUIT:
- replace the CONT-ZONE TEMPERATURE (8HK) (Ref. AMM TASK 21-63-34-000-001) and (Ref. AMM TASK 21-63-34-400-001).
(1) If the fault continues:
- replace the EIU-1 (1KS1) (Ref. AMM TASK 73-25-34-000-040) and (Ref. AMM TASK 73-25-34-400-040).
(2) If the fault continues:
- do a check and repair the wiring from the EIU-1 (1KS1) to the zone temperature controller (8HK) pin AB/1E to pin AB/1K (Ref. ASM 73-25/09).
B. Do the test given in Para. 3.A.
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TASK 73-25-00-810-862
Failure of the HP Fuel SOV Closed Discrete Output on the EIU 2
1. Possible Causes
_______________
- CONT-ZONE TEMPERATURE (8HK)
- EIU-2 (1KS2)
- wiring from the EIU-2 (1KS2) to the zone temperature controller (8HK)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 21-63-34-000-001 Removal of the Zone Controller (8HK)
AMM 21-63-34-400-001 Installation of the Zone Controller (8HK)
AMM 73-25-34-000-040 Removal of the Engine Interface Unit (EIU)
