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 4. Fault Isolation
_______________
 A. If the test gives the maintenance message CHECK FDU ENG 2 LOOP B WARN CKT:
 - replace the FDU-ENG2 (2WD2) (Ref. AMM TASK 26-12-34-000-001) and (Ref. AMM TASK 26-12-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the INOP LOOP B discrete from the engine 2 FDU (2WD2) to the first terminal block (Ref. ASM 26-12/01).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : ALL ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page 280
 Feb 01/04 CES Loss of the Engine 1 FDU Pin-Programming

 

 1. Possible Causes
_______________
 - FDU-ENG1 (2WD1)

 - wiring of the IDENTIFICATION discrete from the engine 1 FDU to the ground point

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 26-12-00-710-002  Operational Test of the Engine Fire and Overheat Detection with the Centralized Fault Display System (CFDS)
 AMM 26-12-34-000-001 Removal of the Engine Fire-Detection Unit (FDU) (2WD1,2WD2) AMM 26-12-34-400-001 Installation of the Engine Fire-Detection Unit (FDU) (2WD1,2WD2) ASM 26-12/01
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the engine fire and overheat detection from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 26-12-00-710-002).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message CHECK FDU ENG 1 PIN PROG:
 - replace the FDU-ENG1 (2WD1) (Ref. AMM TASK 26-12-34-000-001) and (Ref. AMM TASK 26-12-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the IDENTIFICATION discrete from the engine 1 FDU to the ground point (Ref. ASM 26-12/01).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : ALL ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page 281
 Feb 01/04 CES Loss of the Engine 2 FDU Pin-Programming

 

 1. Possible Causes
_______________
 - FDU-ENG2 (2WD2)

 - wiring of the IDENTIFICATION discrete from the engine 2 FDU to the ground point

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
AMM 26-12-00-710-002  Operational Test of the Engine Fire and Overheat Detection with the Centralized Fault Display System (CFDS)
 AMM 26-12-34-000-001 Removal of the Engine Fire-Detection Unit (FDU) (2WD1,2WD2) AMM 26-12-34-400-001 Installation of the Engine Fire-Detection Unit (FDU) (2WD1,2WD2) ASM 26-12/01
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the engine fire and overheat detection from the Multipurpose Control and Display Unit (MCDU) (Ref. AMM TASK 26-12-00-710-002).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message CHECK FDU ENG 2 PIN PROG:
 - replace the FDU-ENG2 (2WD2) (Ref. AMM TASK 26-12-34-000-001) and (Ref. AMM TASK 26-12-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the IDENTIFICATION discrete from the engine 2 FDU to the ground point (Ref. ASM 26-12/01).
 B. Do the test given in Para. 3.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : ALL ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page 282
 Feb 01/04 CES Loss of the FDU Pin-Programming

 

 1. Possible Causes
_______________
 - FDU-APU (13WG)

 - FDU-ENG1 (2WD1)

 - FDU-ENG2 (2WD2)

 - wiring of the IDENTIFICATION discretes of the APU FDU

 - wiring of the IDENTIFICATION discretes of the engine 1 FDU and the engine 2 FDU

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
　
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