Loss of the Audio Signal from the DME Interrogator 2
 1. Possible Causes
_______________
 - INTRG-DME, 2 (2SD2)

 - AMU (1RN)

 - wiring of the DME 2 AUDIO bus from the AMU (1RN) to the DME interrogator 2 (2SD2)

 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 34-51-00-710-001 Operational Test of the DME
 AMM 34-51-33-000-001 Removal of the DME Interrogator (2SD1,2SD2)
 AMM 34-51-33-400-001 Installation of the DME Interrogator (2SD1,2SD2)
 ASM 34-51/01

 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the DME (Ref. AMM TASK 34-51-00-710-001).
 4. Fault Isolation
_______________
 A. If there is no audio signal on the loud speakers during the test, when the DME 2 data are shown on the ND:
 - replace the INTRG-DME, 2 (2SD2) (Ref. AMM TASK 34-51-33-000-001) and (Ref. AMM TASK 34-51-33-400-001).
 (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 DME 2 AUDIO bus from the AMU (1RN) to the DME interrogator 2 (2SD2) (Ref. ASM 34-51/01).
 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 ∞∞34-51-00∞∞∞∞∞∞∞∞∞∞Page 239
 Feb 01/05R CES

 Loss of the DME Antenna 1 Signals
 1. Possible Causes
_______________
 - INTRG-DME, 1 (2SD1)

 - ANTENNA-DME, 1 (3SD1)

 - wiring between the DME interrogator 1 and the DME antenna 1

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 34-51-00-740-002 BITE Test of the DME
 AMM 34-51-11-000-002 Removal of the DME Antenna (3SD1, 3SD2)
 AMM 34-51-11-400-002 Installation of the DME Antenna (3SD1, 3SD2)
 AMM 34-51-33-000-001 Removal of the DME Interrogator (2SD1,2SD2)
 AMM 34-51-33-400-001 Installation of the DME Interrogator (2SD1,2SD2)
 ASM 34-51/01

 3. Fault Confirmation
__________________
 A. Test Do the BITE test of the DME (system 1) (Ref. AMM TASK 34-51-00-740-002).
 4. Fault Isolation
_______________
 A. If the test gives the maintenance message DME1 ANTENNA (3SD1):
 - swap the INTRG-DME, 1 (2SD1) and the DME interrogator 2 (Ref. AMM TASK 34-51-33-000-001) and (Ref. AMM TASK 34-51-33-400-001).
 (1) If the fault stops:

 - replace the DME interrogator that you installed on side 2.

 (2) If the fault continues:

 - remove the DME interrogator 1

 - disconnect the coaxial connector from the DME antenna 1 (Ref. AMM TASK 34-51-11-000-002)

 - do a check of the wiring between the DME interrogator 1 and the DME antenna 1: for pin AB/C of the DME interrogator 1 (Ref. ASM 34-51/01).

 (a) If the wiring is not OK:
 - repair it

 - connect the coaxial connector to the DME antenna 1 (Ref. AMM TASK 34-51-11-400-002)

 - install the DME interrogator 1.

 「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 ∞∞34-51-00∞∞∞∞∞∞∞∞∞∞Page 240
 Feb 01/05R CES

 (b) If the wiring is OK:
 - replace the ANTENNA-DME, 1 (3SD1) (Ref. AMM TASK 34-51-11-000-002) and (Ref. AMM TASK 34-51-11-400-002)

 - install the DME interrogator 1.

 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 ∞∞34-51-00∞∞∞∞∞∞∞∞∞∞Page 241
 Feb 01/05R
 CES  Loss of the DME1 Display on the RMI

 1. Possible Causes
　
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