ENGINE FIRE AND OVERHEAT DETECTION - FAULT ISOLATION PROCEDURES
_______________________________________________________________
 TASK 26-12-00-810-801
 Failure of the Engine 1 FDU
 1. Possible Causes
_______________
 - FDU-ENG1 (2WD1)
 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)
 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 FDU ENG 1:
 - replace the FDU-ENG1 (2WD1) (Ref. AMM TASK 26-12-34-000-001) and (Ref. AMM TASK 26-12-34-400-001).

 Failure of the Engine 2 FDU
 1. Possible Causes
_______________
 - FDU-ENG2 (2WD2)
 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)
 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 FDU ENG 2:
 - replace the FDU-ENG2 (2WD2) (Ref. AMM TASK 26-12-34-000-001) and (Ref. AMM TASK 26-12-34-400-001).

 Loss of the Detection by the Engine 1 Loop A
 1. Possible Causes
_______________
 - DET-FIRE, ENG 1 PYLON LOOP A (3WD1)

 - FDU-ENG1 (2WD1)

 - DET-FIRE, FAN LOOP A (4000WD1)

 - DET-FIRE, CORE LOOP A (4001WD1)

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 26-12-00-200-003  Visual Inspection of the Engine Fire Detection System
 AMM 26-12-00-710-002  Operational Test of the Engine Fire and Overheat Detection with the Centralized Fault Display System (CFDS)
 AMM 26-12-15-000-042 Removal of the Fan Fire Detectors (4000WD1,4000WD2) AMM 26-12-15-400-042 Installation of the Fan Fire Detectors (4000WD1,4000WD2) AMM 26-12-16-000-001 Removal of the Pylon Fire Detectors (3WD1,3WD2,4WD1,4WD2) AMM 26-12-16-400-001 Installation of the Pylon Fire Detectors
 (3WD1,3WD2,4WD1,4WD2) AMM 26-12-17-000-041 Removal of the Core Fire Detectors (4001WD1,4001WD2) AMM 26-12-17-400-041 Installation of the Core Fire Detectors
 (4001WD1,4001WD2) 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) R AMM 78-36-51-400-040 Installation of the Cowl Opening Actuator ASM 26-12/01
 3. Fault Confirmation
__________________
 NOTE : Some FIRE LOOP FAULT ECAM warnings occur in flight but do not occur
____ on the ground during tests. For such warnings, refer to SIL 26-029 for trouble shooting recommendations.
 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).
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page 203
 Aug 01/04 CES

 4. Fault Isolation
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