- replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
 (1) If the fault continues:
 - swap the ADIRU-1 (1FP1) and the ADIRU2 (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (a) If the fault stops:

 - replace the ADIRU that you installed on side 2.

 (b) If the fault continues:

 - swap back the ADIRU1 and the ADIRU2

 - swap the ADIRU-3 (1FP3) and the ADIRU2 (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).

 1_ If the fault stops:
 - replace the ADIRU that you installed on side 2.
 2_ If the fault continues:
 - remove the weather radar transceiver 1
 - remove the ADIRU1 and the ADIRU3
 - do a check and repair the wiring from the ADIRU1 to the
 weather radar transceiver 1: from pins AB/10C, 11C of the
 ADIRU1 to pins AB/11J, 12J of the weather radar transceiver
 1 (Ref. ASM 34-41/01) and the wiring from the ADIRU3 to the
 weather radar transceiver 1: from pins AB/10C, 11C of the
 ADIRU3 to pins AB/12G, 13G of the weather radar transceiver
 1.
 - install the weather radar transceiver 1

 - install the ADIRU1 and the ADIRU3.
 B. Do the test given in Para. 3.

 Loss of the IR Interface between the WXR Transceiver 2 and the ADIRU 2 + 3
 1. Possible Causes
_______________
 - XCVR-WEATHER RADAR, 2 (1SQ2)

 - ADIRU-2 (1FP2)

 - ADIRU-3 (1FP3)

 - wiring from the ADIRU2 to the weather radar transceiver 2

 - wiring from the ADIRU3 to the weather radar transceiver 2

 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 34-41-00-740-002 BITE Test of the Weather Radar
 AMM 34-41-33-000-004 Removal of the Weather Radar Transceiver (1SQ1, 1SQ2)
 AMM 34-41-33-400-003 Installation of the Weather Radar Transceiver (1SQ1,

 1SQ2) ASM 34-41/01
 3. Fault Confirmation
__________________
 A. Test
 NOTE : Do the test that follows with the ATT HDG selector switch (13FP),
____
 on the SWITCHING panel 8VU, at NORM then at F/O ON 3.

 Do the BITE test of the weather radar (Ref. AMM TASK 34-41-00-740-002).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message ADIRU2+3(1FP2+3) BUS
 IR/WXR2(1SQ2):

 - replace the XCVR-WEATHER RADAR, 2 (1SQ2) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
 (1) If the fault continues:
 - swap the ADIRU-2 (1FP2) and the ADIRU1 (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).
 (a) If the fault stops:

 - replace the ADIRU that you installed on side 1.

 (b) If the fault continues:

 - swap back the ADIRU1 and the ADIRU2

 - swap the ADIRU-3 (1FP3) and the ADIRU1 (Ref. AMM TASK 34-12-34-000-001) and (Ref. AMM TASK 34-12-34-400-001).

 1_ If the fault stops:
 - replace the ADIRU that you installed on side 1.
 2_ If the fault continues:
 - remove the weather radar transceiver 2
 - remove the ADIRU2 and the ADIRU3
 - do a check and repair the wiring from the ADIRU2 to the
 weather radar transceiver 2: from pins AB/5E, 6E of the
 ADIRU2 to pins AB/11J, 12J of the weather radar transceiver
 2 (Ref. ASM 34-41/01) and the wiring from the ADIRU3 to the
 weather radar transceiver 2: from pins AB/5E, 6E of the
 ADIRU3 to pins AB/12G, 13G of the weather radar transceiver
 2.
 - install the weather radar transceiver 2

 - install the ADIRU2 and the ADIRU3.
 B. Do the test given in Para. 3.

 Result of the BITE Test of the Weather Radar 1 not Satisfactory on CAPT ND/PFD
 1. Possible Causes
_______________
 - DMC-1 (1WT1)

 - XCVR-WEATHER RADAR, 1 (1SQ1)

 2. Job Set-up Information
______________________
 A. Referenced Information
　
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