Loss of the HF 1 Transmission

TASK 23-11-00-810-815-A
Loss of the HF 1 Transmission

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-11-00-710-001	Operational Test of the HF System
ASM 231101
AMM 23-11-33-000-001	Removal of the HF Transceiver
AMM 23-11-33-400-001	Installation of the HF Transceiver
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)

3. Fault Confirmation
Subtask 23-11-00-710-059-A

A. Test
(1) Do the operational test of the HF system AMM 23-11-00-710-001.

NOTE: Do this test for the HF 1 system only.

4. Fault Isolation
Subtask 23-11-00-810-071-A

A. If the transmission function is not possible during the operational test of the HF 1 system:

(1) If the fault continues:

(a) If the fault continues:

do a check and repair the wiring from the HF 1 transceiver (3RE1) to the AMU (1RN) of the MIKE INPUT signal, from pins AB/1A, 1B to pins AA/4D, 4E) ASM 231101.

Subtask 23-11-00-710-060-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:35 UTC