DOC AIRBUS | TSM A320FNo VOICE mode set through the RMPs
TASK 46-21-00-810-842-A
No VOICE mode set through the RMPs
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 46-21-00-740-130-A
Subtask 46-21-00-810-092-A
[Rev.8 from Aug 2018]
2026.04.04 04:34:21 UTC
No VOICE mode set through the RMPs
1. Possible Causes
- RMP-COM/NAV FREQ SEL, 1 [1RG1]
- RMP-COM/NAV FREQ SEL, 2 [1RG2]
[1RG3] wiring of the VOICE/DATA SELECT OUTPUT wiring of the VOICE/DATA MONITOR INPUT - ATSU [1TX1]
wiring of the REMOTE VOICE/DATA SELECT - wiring of the PORT SELECT DISCRETE
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 23-13-13-000-001 | Removal of the Radio Management Panel (RMP) |
| AMM 23-13-13-400-001 | Installation of the Radio Management Panel (RMP) |
| AMM 46-21-00-710-001 | Operational Test of the ATSU |
| ASM 462105 | |
| AMM 46-21-34-000-001 | Removal of the Air Traffic Service Unit (ATSU) |
| AMM 46-21-34-400-001 | Installation of the Air Traffic Service Unit (ATSU) |
Subtask 46-21-00-740-130-A
A. Test
(1) Do the operational test of the ATSU AMM 46-21-00-710-001 from the step 35.
Do it again for each RMP.
4. Fault Isolation(1) Do the operational test of the ATSU AMM 46-21-00-710-001 from the step 35.
Do it again for each RMP.
Subtask 46-21-00-810-092-A
A. If you cannot select the VOICE mode from one RMP, do the fault isolation procedure that follows:
(1) If you can correctly set the VOICE mode on the two other RMPs
(a) Replace the RMP-COM/NAV FREQ SEL, 1 [1RG1] , RMP-COM/NAV FREQ SEL, 2 [1RG2] or
(b) If the fault continues:
(a) Remove the ATSU [1TX1] AMM 46-21-34-000-001
Subtask 46-21-00-740-131-A (1) If you can correctly set the VOICE mode on the two other RMPs
(a) Replace the RMP-COM/NAV FREQ SEL, 1 [1RG1] , RMP-COM/NAV FREQ SEL, 2 [1RG2] or
(b) If the fault continues:
- remove the same RMP
- do a check and repair if necessary the
wiring of the VOICE/DATA SELECT OUTPUT from the pin A/G of the RMP to the RMP derivation terminal block ASM 462105
- do a check and repair if necessary the
wiring of the VOICE/DATA MONITOR INPUT from the RMP derivation terminal block to pin A/F of the RMP ASM 462105 - install the RMP that you removed.
(a) Remove the ATSU [1TX1] AMM 46-21-34-000-001
- do a check and repair if necessary the
wiring of the REMOTE VOICE/DATA SELECT from pin AA/15A of the ATSU to the RMP derivation terminal block ASM 462105
- do a check and repair if necessary the wiring of the PORT SELECT DISCRETE from AA/12B of the ATSU to the RMP derivation terminal block ASM 462105.
- install the ATSU AMM 46-21-34-400-001
- install a new ATSU AMM 46-21-34-400-001.
B. Do the test given in Para. 3.A.