- do a check for a short to ground at pins AB/4A, 15F of the MMR-2 (40RT2) (Ref. ASM 34-36/01).
 (1) If there is no short to ground:

 - replace the MMR-2 (40RT2) (Ref. AMM TASK 34-36-31-000-002) and (Ref. AMM TASK 34-36-31-400-002).

 (2) If there is a short to ground at pin AB/4A:

 - replace the LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 (a) If there is a short to ground at pin AB/4A:
 - do a check and repair the wiring between the MMR2(40RT2) and the LGCIU2(5GA2) for pin AB/4A and pin AB/8H (Ref. ASM 34-36/01).

 (3) If there is a short to ground at pin AB/15F:

 - replace the FMGC-2 (1CA2) (Ref. AMM TASK 22-83-34-000-001) and (Ref. AMM TASK 22-83-34-400-001).
 (a) If there is a short to ground at pin AB/15F:
 - do a check and repair the wiring between the MMR2(40RT2) and the FMGC2(1CA2) for pin AB/15F and pin AB/9A (Ref. ASM 34-36/01).
 B. Do the test given in para. 3.

 TASK 34-36-00-810-854
 Loss of the ADIRU1 Data on the MMR1

 1. Possible Causes
_______________
 - ADIRU-1 (1FP1)

 - MMR-1 (40RT1)

 - wiring between the ADIRU1 and the MMR1

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
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)
 AMM 34-36-00-740-003 BITE Test of the MMR
 AMM 34-36-31-000-002 Removal of the Multi Mode Receiver (40RT1, 40RT2)
 AMM 34-36-31-400-002 Installation of the Multi Mode Receiver (40RT1,

 40RT2)
 ASM 34-36/02

 3. Fault Confirmation
__________________ **ON A/C ALL R Post SB 34-1147 For A/C 001-004,051-060,
 A. Test Do the BITE test of the MMR (system 1 and 2) (Ref. AMM TASK 34-36-00-740-003).

 4. Fault Isolation
_______________
 **ON A/C ALL
R Post SB 34-1147 For A/C 001-004,051-060,
 A. If the test gives the maintenance message ADIRU1(1FP1)/MMR1(40RT1):
 - swap the ADIRU-1 (1FP1) and the ADIRU-2 (1FP2) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (1) If the test gives the maintenance message ADIRU2(1FP2)/MMR2(40RT2):

 - replace the ADIRU that you installed on side 2.

 (2) If the fault continues:

 - swap the MMR-1 (40RT1) and the MMR-2 (40RT2) (Ref. AMM TASK 34-36-31-000-002) and (Ref. AMM TASK 34-36-31-400-002).
 (a) If the test gives the maintenance message ADIRU2(1FP2)/MMR2(40RT2):

 - replace the MMR that you installed on side 2.

 (b) If the fault continues:

 - do a check and repair the wiring between the ADIRU1 and the MMR1 for pins AB/5E, 6E and AB/8A, 8B (Ref. ASM 34-36/02).
 B. Do the test given in para. 3.

 TASK 34-36-00-810-855
 Loss of the ADIRU2 Data on the MMR1

 1. Possible Causes
_______________
 - ADIRU-2 (1FP2)

 - MMR-1 (40RT1)

 - wiring between the ADIRU2 and the MMR1

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
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)
 AMM 34-36-00-740-003 BITE Test of the MMR
 AMM 34-36-31-000-002 Removal of the Multi Mode Receiver (40RT1, 40RT2)
 AMM 34-36-31-400-002 Installation of the Multi Mode Receiver (40RT1,

 40RT2)
 ASM 34-36/02

 3. Fault Confirmation
__________________ **ON A/C ALL R Post SB 34-1147 For A/C 001-004,051-060,
 A. Test Do the BITE test of the MMR1 (Ref. AMM TASK 34-36-00-740-003).

 4. Fault Isolation
_______________
 **ON A/C ALL
R Post SB 34-1147 For A/C 001-004,051-060,
 A. If the test gives the maintenance message ADIRU2(1FP2)/MMR1(40RT1):
 - swap the ADIRU-2 (1FP2) and the ADIRU-3 (1FP3) (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (1) If the test gives the maintenance message ADIRU3(1FP3)/MMR1(40RT1):

 - replace the ADIRU that you installed on side 3.

 (2) If the fault continues:
　
中國航空網 m.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 2(132)