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__________________
 A. Test
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the BITE test of the ADF 1 cannot be started on the MCDU:
 - replace the RECEIVER-ADF, 1 (2RP1) (Ref. AMM TASK 34-53-31-000-002) and (Ref. AMM TASK 34-53-31-400-002).
 (1) If the fault continues:
 - replace the LGCIU-1 (5GA1) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring of the GND/AIR LOGIC discrete from the ADF receiver 1 (2RP1) to the LGCIU 1 (5GA1) (Ref. ASM 34-53/01).
 B. Do the BITE test of the ADF (Ref. AMM TASK 34-53-00-740-003).
 「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 ∞∞34-53-00∞∞∞∞∞∞∞∞∞∞Page 234
 May 01/05R CES

 BITE Test of the ADF 2 Inoperative
 1. Possible Causes
_______________
 - RECEIVER-ADF, 2 (2RP2)

 - LGCIU-2 (5GA2)

 - wiring of the GND/AIR LOGIC discrete from the ADF receiver 2 (2RP2) to the LGCIU 2 (5GA2)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-31-71-000-001 Removal of the LGCIU (5GA1, 5GA2)
 AMM 32-31-71-400-001 Installation of the LGCIU (5GA1, 5GA2)
 AMM 34-53-00-740-003 BITE Test of the ADF
 AMM 34-53-31-000-002 Removal of the ADF Receiver (2RP1, 2RP2)
 AMM 34-53-31-400-002 Installation of the ADF Receiver (2RP1, 2RP2)
 ASM 34-53/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Not applicable, the fault is evident.
 4. Fault Isolation
_______________
 A. If the BITE test of the ADF 2 cannot be started on the MCDU:
 - replace the RECEIVER-ADF, 2 (2RP2) (Ref. AMM TASK 34-53-31-000-002) and (Ref. AMM TASK 34-53-31-400-002).
 (1) If the fault continues:
 - replace the LGCIU-2 (5GA2) (Ref. AMM TASK 32-31-71-000-001) and (Ref. AMM TASK 32-31-71-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring of the GND/AIR LOGIC discrete from the ADF receiver 2 (2RP2) to the LGCIU 2 (5GA2) (Ref. ASM 34-53/01).
 B. Do the BITE test of the ADF (Ref. AMM TASK 34-53-00-740-003).
 「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 ∞∞34-53-00∞∞∞∞∞∞∞∞∞∞Page 235
 May 01/05R CES

 Loss of the Audio Signal from the ADF Receiver 1
 1. Possible Causes
_______________
 - RECEIVER-ADF, 1 (2RP1)

 - AMU (1RN)

 - wiring of the ADF 1 AUDIO bus from the AMU (1RN) to the ADF receiver 1 (2RP1)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 23-51-34-000-001 Removal of the Audio Management Unit (AMU) (1RN)
 AMM 23-51-34-400-001 Installation of the Audio Management Unit (AMU) (1RN)
 AMM 34-53-00-710-002 Operational Test of the ADF
 AMM 34-53-31-000-002 Removal of the ADF Receiver (2RP1, 2RP2)
 AMM 34-53-31-400-002 Installation of the ADF Receiver (2RP1, 2RP2)
 ASM 34-53/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the ADF (Ref. AMM TASK 34-53-00-710-002).
 4. Fault Isolation
_______________
 A. If there is no audio signal on the loud speakers during the test, when the ADF 1 data are shown on the ND:
 - replace the RECEIVER-ADF, 1 (2RP1) (Ref. AMM TASK 34-53-31-000-002) and (Ref. AMM TASK 34-53-31-400-002).
 (1) If the fault continues:
 - replace the AMU (1RN) (Ref. AMM TASK 23-51-34-000-001) and (Ref. AMM TASK 23-51-34-400-001).
 (a) If the fault continues:
 - do a check and repair the wiring of the ADF 1 AUDIO bus from the AMU (1RN) to the ADF receiver 1 (2RP1) (Ref. ASM 34-53/01).
 B. Do the test given in Para. 3.
 「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 ∞∞34-53-00∞∞∞∞∞∞∞∞∞∞Page 236
　
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