Loss of the Transmission from the F/O Boomset

TASK 23-51-00-810-836-A
Loss of the Transmission from the F/O Boomset

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 23-51-00-710-001	Operational Test of the Audio Management
ASM 235103
AIPC 235108
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 27-92-41-000-001	Removal of the Side Stick Assembly
AMM 27-92-41-400-001	Installation of the Side Stick Assembly

3. Fault Confirmation
Subtask 23-51-00-710-076-A

A. Test
(1) Do the operational test of the audio management system AMM 23-51-00-710-001.

4. Fault Isolation
Subtask 23-51-00-810-085-A

A. After you speak in the First Officer boomset microphone:

If the reception is incorrect at each loud speaker and boomset of each crew station:
. Connect a new boomset to the RCPT-BOOMSET, F/O [17RN2] on the panel 60VU.

(1) If the fault continues:

(a) If the fault continues:

1 If the fault continues:

Do a check and repair the wiring from the RCPT-BOOMSET, F/O [17RN2] pins 3 and 4 to the AMU [1RN] pins A/12D, 12E ASM 235103.

2 If the fault continues:

Replace on the First Officer Sidestick the SW-RAD PTT, F/O [12RN] , AMM 27-92-41-000-001 AMM 27-92-41-400-001.

Subtask 23-51-00-710-077-A

B. Do the test given in Para. 3.

[Rev.8 from Aug 2018] 2026.04.04 04:25:46 UTC