4. Fault Isolation
_______________
A. If the ALIGN legend of the IR 2 annunciator does not come on:
- on the panel 25VU, set the INT LT/ANN LT switch to TEST and make sure that the ALIGN legend comes on.
(1) If the ALIGN legend comes on:
- replace the ADIRU-2 (1FP2) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
(a) If the ALIGN legend stays off during the ADIRS start procedure:
- replace the BOARD-ANN LT TEST & INTFC (18LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
(2) If the ALIGN legend does not come on:
1_ If the fault continues:
- do a check and repair the wiring of the ALIGN discrete from
the ADIRU2 (1FP2) to the annunciator light test and
interface board (18LP) (Ref. ASM 34-14/02).
- replace the BOARD-ANN LT TEST & INTFC (18LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
(a) If the fault continues:
- replace the CDU-ADIRS (2FP) (Ref. AMM TASK 34-12-12-000-001) and (Ref. AMM TASK 34-12-12-400-001).
1 If the fault continues:
_
- do a check and repair the wiring of the annunciator light test and interface board (18LP) . from pin A/22 to ADIRS CDU (2FP) pin B/14 . from pin A/23 to the ground point (Ref. ASM 34-14/02).
B. Do the test given in Para. 3.B.
5. Close-up
________
A. Put the aircraft back to its initial configuration.
(1) On the panel 25VU, set the ANN LT switch to BRT.
(2) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
「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 ∞∞34-14-00∞∞∞∞∞∞∞∞∞∞Page A212
May 01/05R
CES The ALIGN Legend of the IR 3 Annunciator does not come on
1. Possible Causes
_______________
- ADIRU-3 (1FP3)
- BOARD-ANN LT TEST & INTFC (4LP)
- CDU-ADIRS (2FP)
- wiring of the ALIGN discrete from the ADIRU3 (1FP3) to the annunciator light test and interface board (4LP)
- wiring of the annunciator light test and interface board (4LP)
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
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) AMM 34-10-00-860-002 ADIRS Start Procedure AMM 34-10-00-860-005 ADIRS Stop Procedure AMM 34-12-12-000-001 Removal of the ADIRS CDU (2FP) AMM 34-12-12-400-001 Installation of the ADIRS CDU (2FP) AMM 34-12-34-000-001 Removal of the ADIRU (1FP1, 1FP2, 1FP3) AMM 34-12-34-400-001 Installation of the ADIRU (1FP1, 1FP2, 1FP3) ASM 34-14/02
3. Fault Confirmation
__________________
A. Job Set-up
(1) Do the ADIRS start procedure (Ref. AMM TASK 34-10-00-860-002).
B. Test
(1) On the ADIRS CDU, make sure that the ALIGN legend of the IR 3 annunciator comes on.
4. Fault Isolation
_______________
A. If the ALIGN legend of the IR 3 annunciator does not come on:
- on the panel 25VU, set the INT LT/ANN LT switch to TEST and make sure that the ALIGN legend comes on.
(1) If the ALIGN legend comes on:
- replace the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
(a) If the ALIGN legend stays off during the ADIRS start procedure:
- replace the BOARD-ANN LT TEST & INTFC (4LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
(2) If the ALIGN legend does not come on:
1_ If the fault continues:
- do a check and repair the wiring of the ALIGN discrete from
the ADIRU3 (1FP3) to the annunciator light test and
interface board (4LP) (Ref. ASM 34-14/02).
- replace the BOARD-ANN LT TEST & INTFC (4LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001). 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 导航 NAVIGATION 2(57)
