4. Fault Isolation
_______________

 A. If during the test, the FIRE legend of the ENG/1 FIRE/FAULT annunciator does not come on: - on the panel 25VU, set the ANN LT switch to TEST and do a check to see
 if the FIRE legend of the ENG/1 FIRE/FAULT annunciator comes on.
 (1) If it comes on:
 - replace the BOARD-ANN LT TEST & INTFC (5LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
 (a) If the fault continues:

 - do a check and repair the wiring of the annunciator light test and interface board (5LP), from pin A/38 to the first terminal block and from pin A/39 to pin A/32 (Ref. ASM 26-12/01).

 (b) If it does not come on:

 - replace the ENG/1 FIRE/FAULT annunciator (5KS1).
 1 If the fault continues:
_

 - do a check and repair the wiring of the ENG/1 FIRE/FAULT annunciator (5KS1), from pin A/9 to the first terminal block and from pin A/7 to the pin A/37 of the annunciator light test and interface board (5LP) (Ref. ASM 26-12/01).
 B. Do the test given in Para. 3.
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.
 (1) On the panel 25VU, set the ANN LT switch to BRT.
 「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 246
 Feb 01/04R
 CES  Loss of the FIRE Legend of ENG/2 FIRE/FAULT Annunciator

 1. Possible Causes
_______________
 - BOARD-ANN LT TEST & INTFC (5LP)

 - wiring of the annunciator light test and interface board (5LP)

 - ENG/2 FIRE/FAULT annunciator (5KS2)

 - wiring of the ENG/2 FIRE/FAULT annunciator (5KS2)

 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. Make sure that this(these) circuit breaker(s) is(are) closed:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
122VU LIGHTING/TST/BOARD/SPLY 30LP X06
 B. Test
 (1) Do the operational test of the engine fire and overheat detection (loop/squib) (Ref. AMM TASK 26-12-00-710-001).

 4. Fault Isolation
_______________

 A. If during the test, the FIRE legend of the ENG/2 FIRE/FAULT annunciator does not come on: - on the panel 25VU, set the ANN LT switch to TEST and do a check to see
 if the FIRE legend of the ENG/2 FIRE/FAULT annunciator comes on.
 (1) If it comes on:
 - replace the BOARD-ANN LT TEST & INTFC (5LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
 (a) If the fault continues:

 - do a check and repair the wiring of the annunciator light test and interface board (5LP), from pin A/45 to the first terminal block (Ref. ASM 26-12/01).

 (b) If it does not come on:

 - replace the ENG/2 FIRE/FAULT annunciator (5KS2).
 1 If the fault continues:
_

 - do a check and repair the wiring of the ENG/2 FIRE/FAULT annunciator (5KS2), from pin A/9 to the first terminal block and from pin A/7 to the pin A/10 of the annunciator light test and interface board (5LP) (Ref. ASM 26-12/01).
 B. Do the test given in Para. 3.
 5. Close-up
________
 A. Put the aircraft back to its initial configuration.
 (1) On the panel 25VU, set the ANN LT switch to BRT.
 「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 248
 Feb 01/04R
 CES  Loss of the First and Third Rows of the Legend of the ENG 1 FIRE Pushbutton Switch and the FIRE Legend of the ENG/1 FIRE/FAULT Annunciator

 1. Possible Causes
_______________
 - BOARD-ANN LT TEST & INTFC (5LP)
　
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