1RC3) 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) ASM 23-51/06
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the VHF system (Ref. AMM TASK 23-12-00-710-001).
 NOTE : Do this test for the VHF 2 system only.
____
 4. Fault Isolation
_______________
 A. If the reception function is not possible during the operational test of the VHF 2 system:
 - replace the XCVR-VHF, 2 (1RC2) (Ref. AMM TASK 23-12-33-000-001) and (Ref. AMM TASK 23-12-33-400-001).
 (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 from VHF 2 transceiver (1RC2) to AMU (1RN) of the AUDIO SIDETONE OUTPUT signal, from pins AB/15B, 15A to pins AA/2A, 2B (Ref. ASM 23-51/06).
 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 ∞∞23-12-00∞∞∞∞∞∞∞∞∞∞Page 226
 May 01/01R CES

 TASK 23-12-00-810-817
 Loss of the VHF 3 Transmission
 1. Possible Causes
_______________
 - XCVR-VHF, 3 (1RC3)

 - AMU (1RN)

 - wiring from VHF 3 transceiver (1RC3) to AMU (1RN)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 23-12-00-710-001 Operational Test of the VHF System
 AMM 23-12-33-000-001 Removal of the VHF Transceiver (1RC1, 1RC2, 1RC3)
 AMM 23-12-33-400-001 Installation of the VHF Transceiver (1RC1, 1RC2,

 1RC3) 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) ASM 23-51/06
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the VHF system (Ref. AMM TASK 23-12-00-710-001).
 NOTE : Do this test for the VHF 3 system only.
____
 4. Fault Isolation
_______________
 A. If the transmission function is not possible during the operational test of the VHF 3 system:
 - replace the XCVR-VHF, 3 (1RC3) (Ref. AMM TASK 23-12-33-000-001) and (Ref. AMM TASK 23-12-33-400-001).
 (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 from VHF 3 transceiver (1RC3) to AMU (1RN) of the MIKE INPUT signal, from pins AB/1A, 1B to pins AA/3E, 3D (Ref. ASM 23-51/06).
 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 ∞∞23-12-00∞∞∞∞∞∞∞∞∞∞Page 227
 May 01/01R CES

 TASK 23-12-00-810-818

 Loss of the VHF 3 Reception
 1. Possible Causes
_______________
 - XCVR-VHF, 3 (1RC3)

 - AMU (1RN)

 - wiring from VHF 3 transceiver (1RC3) to AMU (1RN)

 2. Job Set-up Information
______________________
 A. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION
 -------------------------------------------------------------------------------
AMM 23-12-00-710-001 Operational Test of the VHF System
 AMM 23-12-33-000-001 Removal of the VHF Transceiver (1RC1, 1RC2, 1RC3)
 AMM 23-12-33-400-001 Installation of the VHF Transceiver (1RC1, 1RC2,

 1RC3) 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) ASM 23-51/06
 3. Fault Confirmation
__________________
 A. Test
 (1) Do the operational test of the VHF system (Ref. AMM TASK 23-12-00-710-001).
 NOTE : Do this test for the VHF 3 system only.
____
 4. Fault Isolation
_______________
 A. If the reception function is not possible during the operational test of the VHF 3 system:
 - replace the XCVR-VHF, 3 (1RC3) (Ref. AMM TASK 23-12-33-000-001) and (Ref. AMM TASK 23-12-33-400-001).
 (1) If the fault continues:
　
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