Loss of the ENG 2 Fire-Test Loop B Input
 1. Possible Causes
_______________
 - FDU-ENG2 (2WD2)

 - wiring

 - ENG/APU FIRE PNL (5WD)

 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 26-12-12-000-001 Removal of the ENG/APU Fire Panel (1WD)
 AMM 26-12-12-400-001 Installation of the ENG/APU Fire Panel (1WD)
 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 26-12/02
 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 ENG2 FIRE TEST PB SW/FDU ENG2:
 - 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 of the wiring between the ENG/APU fire panel 1WD pin D/N and the engine 2 FDU pin B/C and repair if necessary (Ref. ASM 26-12/02).

 (2) If the fault continues:

 - do a check and repair the wiring from the ENG/APU fire panel 1WD pin D/M to the circuit breaker 8WD2 (Ref. ASM 26-12/02).
 「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 : 106-149, 155-199, 208-299, 301-399, ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page A203
 401-499, Aug 01/05 CES (3) If the fault continues:

 - replace the ENG/APU FIRE PNL (5WD) (Ref. AMM TASK 26-12-12-000-001) and (Ref. AMM TASK 26-12-12-400-001).
 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 : 106-149, 155-199, 208-299, 301-399, ∞∞26-12-00∞∞∞∞∞∞∞∞∞∞Page A204
 401-499, Aug 01/05 CES

 TASK 26-12-00-810-848
 ENG 1 Fire Panel/Switch Illumination without Associated ECAM Warning
 1. Possible Causes
_______________
 - BOARD-ANN LT TEST & INTFC (5LP)

 - BOARD-ANN LT TEST & INTFC (18LP)

 - trace of water ingress or corrosion

 - wiring

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 26-12-00-710-001 Operational Check of Loop/Squib 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) ASM 26-12/01
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the engine fire and overheat detection (loop/squib) to make sure that the ECAM warning is deployed on ECAM (Ref. AMM TASK 26-12-00-710-001).
 4. Fault Isolation
_______________
 A. If the legend of the ENG1 FIRE pushbutton switch is on and the FIRE legend of the ENG/1 FIRE/FAULT annunciator is on:
 - remove the annunciator light test and interface board (5LP) (Ref. AMM TASK 33-14-33-000-001),

 - do a visual inspection for any trace of water ingress or corrosion.

 「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 A205
 May 01/05 CES (1) If damage is found:

 - repair or replace as necessary the BOARD-ANN LT TEST & INTFC (5LP) (Ref. AMM TASK 33-14-33-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring (Ref. ASM 26-12/01) between: . the annunciator light test and interface board (5LP) pin A/17 and the ENG/APU FIRE panel (1WD) pin A/B . the annunciator light test and interface board (5LP) pin A/37 and the ANN ENG/1 FIRE/FAULT (5KS1) pin A/7.
　
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