R TASK 34-41-00-810-823 R WR2 Test Inoperative R 1. Possible Causes
_______________
R - XCVR-WEATHER RADAR, 2 (1SQ2)
R - LGCIU-2 (5GA2)
R - wiring of the GROUND AIR discrete from the LGCIU2 (5GA2) to the weather
R radar transceiver 2 (1SQ2)

R 2. Job Set-up Information

______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R AMM 32-31-71-000-001 R AMM 32-31-71-400-001 R AMM 34-41-33-000-004 R AMM 34-41-33-400-003 R R ASM 34-41/01
R 3. Fault Confirmation
__________________
R A. Test
Removal of the LGCIU (5GA1, 5GA2)
Installation of the LGCIU (5GA1, 5GA2)
Removal of the Weather Radar Transceiver (1SQ1, 1SQ2)
Installation of the Weather Radar Transceiver (1SQ1,
1SQ2)

R Not applicable, the fault is evident.
R 4. Fault Isolation
_______________
R A. If you cannot start the WR2 test on the MCDU:
R - do a check for ground at pin AB/10K of the weather radar transceiver 2
R (1SQ2).

R (1) If there is no ground:
R - replace the XCVR-WEATHER RADAR, 2 (1SQ2) (Ref. AMM TASK 34-41-33-R 000-004) and (Ref. AMM TASK 34-41-33-400-003).

R (2) If there is ground:
R - replace the LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) and
R (Ref. AMM TASK 32-31-71-400-001).

R (a) If there is still ground:
R - do a check and repair the wiring of the GROUND AIR discrete
R from the LGCIU2 (5GA2) to the weather radar transceiver 2
R (1SQ2) (Ref. ASM 34-41/01).

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 051-099, ∞∞34-41-00∞∞∞∞∞∞∞∞∞∞Page 247
 May 01/05 CES TASK 34-41-00-810-824

 Loss of the Calibration of the Weather Radar System
 1. Possible Causes
_______________
 - XCVR-WEATHER RADAR, 1 (1SQ1)

 - XCVR-WEATHER RADAR, 2 (1SQ2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
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)
 3. Fault Confirmation
__________________
 A. Test
 - Not applicable, the fault is evident.
 4. Fault Isolation
_______________
R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
 A. If the weather radar display is correctly shown on the NDs with the WXR WEAK message:
 - replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
 **ON A/C 051-099,
 A. If the weather radar display is correctly shown on the NDs with the WXR WEAK message:
 (1) On the WR control unit, if the SYS 1/OFF/2 selector switch is at SYS
 1:
 - replace the XCVR-WEATHER RADAR, 1 (1SQ1) (Ref. AMM TASK 34-41-33-000-004) and (Ref. AMM TASK 34-41-33-400-003).
 「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 ∞∞34-41-00∞∞∞∞∞∞∞∞∞∞Page 248
 Aug 01/05 CES

R (2) On the WR control unit, if the SYS 1/OFF/2 selector switch is at SYS
R 2:
R - replace the XCVR-WEATHER RADAR, 2 (1SQ2) (Ref. AMM TASK 34-41-33-R 000-004) and (Ref. AMM TASK 34-41-33-400-003).

 TASK 34-41-00-810-825
 Display of an Operational Message on the ND
 1. Possible Causes

_______________

 2. Job Set-up Information

______________________
 A. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
34-41-00-810-810 Failure of the Weather Radar Antenna (System 1)
 34-41-00-810-811 Failure of the Weather Radar Antenna (System 2)

 3. Fault Confirmation
__________________
 A. Test
 - Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the WXR STAB message temporarily comes into view on the NDs during the flight:
 - OPERATIONAL MESSAGE - NO FURTHER ACTION REQUIRED. R **ON A/C 001-049, 101-149, 151-199, 201-299, 301-399, 401-499,
　
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