DOC AIRBUS | TSM A320FPermanent Noise from the Cockpit Loudspeaker(s)
TASK 34-36-00-810-898-A
Permanent Noise from the Cockpit Loudspeaker(s)
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 34-36-00-700-053-A
Subtask 34-36-00-810-167-A
Subtask 34-36-00-942-050-A
[Rev.8 from Aug 2018]
2026.04.04 04:33:04 UTC
Permanent Noise from the Cockpit Loudspeaker(s)
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 235100 | |
| 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 34-36-31-000-001 | Removal of the ILS Receiver |
| AMM 34-36-31-400-001 | Installation of the ILS Receiver |
Subtask 34-36-00-700-053-A
A. Test
(1) Not applicable, the fault is evident.
4. Fault Isolation(1) Not applicable, the fault is evident.
Subtask 34-36-00-810-167-A
A. If there is confirmation of the fault:
(1) Replace the ILS receiver for which the fault occurred:
Subtask 34-36-00-810-168-A (1) Replace the ILS receiver for which the fault occurred:
- RECEIVER-ILS, 1 [2RT1] or RECEIVER-ILS, 2 [2RT2] AMM 34-36-31-000-001 and AMM 34-36-31-400-001.
B. If the fault continues:
Do a check and repair the wiring of the ILS transceiver for which the fault occurred.
(1) For ILS receiver 1 (2RT1):
(a) Remove the ILS receiver 1 (2RC1) AMM 34-36-31-000-001.
(b) Remove the AMU (1RN) AMM 23-51-34-000-001.
(c) Do a check and repair if necessary the wiring from:
(e) Install the AMU (1RN) AMM 23-51-34-400-001.
(f) Do the test(s) given in Para. Fault Confirmation.
(2) For ILS receiver 2 (2RT2):
(a) Remove the ILS receiver 2 (2RT2) AMM 34-36-31-000-001.
(b) Remove the AMU (1RN) AMM 23-51-34-000-001.
(c) Do a check and repair if necessary the wiring from:
(e) Install the AMU (1RN) AMM 23-51-34-400-001.
(f) Do the test(s) given in Para. Fault Confirmation.
5. Close-upDo a check and repair the wiring of the ILS transceiver for which the fault occurred.
(1) For ILS receiver 1 (2RT1):
(a) Remove the ILS receiver 1 (2RC1) AMM 34-36-31-000-001.
(b) Remove the AMU (1RN) AMM 23-51-34-000-001.
(c) Do a check and repair if necessary the wiring from:
- ILS receiver 1 (2RT1) pin AB/1A to AMU (1RN) pin AA/14B
- ILS receiver 1 (2RT1) pin AB/1B to AMU (1RN) pin AA/14A
ASM 235100.
(e) Install the AMU (1RN) AMM 23-51-34-400-001.
(f) Do the test(s) given in Para. Fault Confirmation.
(2) For ILS receiver 2 (2RT2):
(a) Remove the ILS receiver 2 (2RT2) AMM 34-36-31-000-001.
(b) Remove the AMU (1RN) AMM 23-51-34-000-001.
(c) Do a check and repair if necessary the wiring from:
- ILS receiver 2 (2RT2) pin AB/1A to AMU (1RN) pin AA/15A
- ILS receiver 2 (2RT2) pin AB/1B to AMU (1RN) pin AA/15B
ASM 235100.
(e) Install the AMU (1RN) AMM 23-51-34-400-001.
(f) Do the test(s) given in Para. Fault Confirmation.
Subtask 34-36-00-942-050-A
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(1) Make sure that the work area is clean and clear of tools and other items.