Loss of the Audio Signal from the ADF Receiver 2
 1. Possible Causes
_______________
 - RECEIVER-ADF, 2 (2RP2)

 - AMU (1RN)

 - wiring of the ADF 2 AUDIO bus from the AMU (1RN) to the ADF receiver 2 (2RP2)

 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 2 data are shown on the ND:
 - 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 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 2 AUDIO bus from the AMU (1RN) to the ADF receiver 2 (2RP2) (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 237
 May 01/05R CES

 ADF 1 System Inoperative
 1. Possible Causes
_______________
 - RECEIVER-ADF, 1 (2RP1)

 - DMC-1 (1WT1)

 - DMC-3 (1WT3)

 - DMC-2 (1WT2)

 - wiring of the BEARING OUTPUT 2 bus from the ADF receiver 1 (2RP1) to the first terminal block

 - wiring of the ADF 1 INPUT bus from the DMC 1 (1WT1) to the first terminal block

 - wiring of the ADF 1 INPUT bus from the DMC 3 (1WT3) to the first terminal block

 - wiring of the ADF 1 INPUT bus from the DMC 2 (1WT2) to the first terminal block

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 31-63-34-000-001 Removal of the DMC (1WT1,1WT2,1WT3)
 AMM 31-63-34-400-001 Installation of the DMC (1WT1,1WT2,1WT3)
 AMM 34-53-00-710-002 Operational Test of the ADF
 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) Do the operational test of the ADF (Ref. AMM TASK 34-53-00-710-002).
 4. Fault Isolation
_______________
 A. If on the two NDs:
 . the ADF 1 data do not come into view
 . the red flag is shown:

 - do the BITE test of the ADF (Ref. AMM TASK 34-53-00-740-003).
 (1) If the BITE test gives a maintenance message:
 - Do the trouble shooting procedure related to the maintenance message.
 「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 238
 May 01/05R CES

 (2) If the BITE test does not give a maintenance message:
 - replace the RECEIVER-ADF, 1 (2RP1) (Ref. AMM TASK 34-53-31-000-002) and (Ref. AMM TASK 34-53-31-400-002).
 (a) If the fault continues:
 - do a check and repair the wiring of the BEARING OUTPUT 2 bus from the ADF receiver 1 (2RP1) to the first terminal block (Ref. ASM 34-53/01).
 B. If on the CAPT ND only: . the ADF 1 data do not come into view . the red flag is shown:
 - make sure that on the center pedestal, on the SWITCHING panel 8VU, the EIS DMC selector switch is at CAPT 3:
 (1) If no:

 - replace the DMC-1 (1WT1) (Ref. AMM TASK 31-63-34-000-001) and (Ref. AMM TASK 31-63-34-400-001).
 (a) If the fault continues:
　
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