4. Fault Isolation
_______________
 **ON A/C 001-049, 051-099, 101-105, 151-199, 201-299, 301-302,
 A. If the test gives the maintenance message DMC2 : NO ADC3 DATA:
 - replace the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the ADR OUTPUT BUS 2 bus from the ADIRU3 (1FP3) to the first terminal block (Ref. ASM 34-13/01).
R **ON A/C 106-149, 303-399, 401-499,
 A. If the test gives the maintenance message ADIRU3(1FP3)BUSX ADR/DMC2(1WT2)
 - replace the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (1) If the fault continues:
 - do a check and repair the wiring of the ADR OUTPUT BUS 2 bus from the ADIRU3 (1FP3) to the first terminal block (Ref. ASM 34-13/01).
 **ON A/C ALL
 B. Do the test given in Para. 3.

 The FAULT Legend of the ADR1 Annunciator does not come on while the related Warning is shown on the Upper ECAM DU
 1. Possible Causes
_______________
 - ADIRU-1 (1FP1)

 - BOARD-ANN LT TEST & INTFC (3LP)

 - CDU-ADIRS (2FP)

 - wiring of the ADR FAULT WARN discrete from the ADIRU1 (1FP1) to the annunciator light test and interface board (3LP)

 - wiring of the annunciator light test and interface board (3LP)

 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 34-13/02
 3. Fault Confirmation
__________________
 A. Job Set-Up
 (1) Do the ADIRS start procedure (Ref. AMM TASK 34-10-00-860-002).
 B. Table of the circuit breakers used in this procedure:
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU NAV PROBES/ADIRU 1/AND AOA 1/26VAC 5FP1 F07
 「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 ∞∞34-13-00∞∞∞∞∞∞∞∞∞∞Page A228
 May 01/05 CES

 C. Test

 -------------------------------------------------------------------------------ACTION RESULT -------------------------------------------------------------------------------
1. Open the circuit breaker (5FP1).  - on the upper ECAM DU, the NAV ADR 1 FAULT warning comes into view
 - on the ADIRS CDU, the FAULT legend of the ADR1 annunciator comes on.
 4. Fault Isolation
_______________
 A. If the FAULT legend of the ADR1 annunciator does not come on:
 - on the panel 25VU, set the INT LT/ANN LT switch to TEST and make sure that the FAULT legend comes on.
 (1) If the FAULT legend comes on:
 - replace the ADIRU-1 (1FP1) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (a) If the FAULT legend stays off while the ECAM warning is shown:
 - replace the BOARD-ANN LT TEST & INTFC (3LP) (Ref. AMM TASK 33-14-33-000-001) and (Ref. AMM TASK 33-14-33-400-001).
 1 If the fault continues:
_
 - do a check and repair the wiring of the ADR FAULT WARN discrete from the ADIRU1 (1FP1) to the annunciator light test and interface board (3LP) (Ref. ASM 34-13/02).
 (2) If the FAULT legend does not come on:
 - replace the BOARD-ANN LT TEST & INTFC (3LP) (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 (3LP) . from pin A/1 to ADIRS CDU (2FP) pin A/22 . from pin A/3 to the first terminal block (Ref. ASM 34-13/02).
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 導航 NAVIGATION 1(93)