DOC AIRBUS | TSM A320FLoss of the Output Bus from the CIDS Director 2 to the CFDIU
TASK 31-32-00-810-889-A
Loss of the Output Bus from the CIDS Director 2 to the CFDIU
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 31-32-00-865-135-A
Subtask 31-32-00-810-138-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:29:56 UTC
Loss of the Output Bus from the CIDS Director 2 to the CFDIU
1. Possible Causes
- DIR-CIDS, 1 [101RH]
- DIR-CIDS, 2 [102RH]
- CFDIU [1TW]
wiring from the CFDIU (1TW) to the CIDS director 2 (102RH) - wiring
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 23-73-34-000-001 | Removal of the CIDS Director |
| AMM 23-73-34-400-001 | Installation of the CIDS Director |
| AMM 31-32-00-740-009 | Read the AVIONICS STATUS on the MCDU |
| ASM 313205 | |
| AMM 31-32-34-000-001 | Removal of the CFDIU |
| AMM 31-32-34-400-001 | Installation of the CFDIU |
Subtask 31-32-00-865-135-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
Subtask 31-32-00-740-222-A ** ON A/C NOT FOR ALL Subtask 31-32-00-740-222-B ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | COM/CIDS/DIR ESS/1 | 150RH | G01 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DIR NORM/1 | 151RH | M05 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | COM NAV/CIDS/DIR NORM/1 | 151RH | M06 |
B. Test
(1) Read the AVIONICS STATUS on the MCDU AMM 31-32-00-740-009.
(2) Make sure that there is no INOP SYS, no MAINTENANCE STATUS or no ECAM warning related to the NO CIDS 2 DATA maintenance message.
4. Fault Isolation(1) Read the AVIONICS STATUS on the MCDU AMM 31-32-00-740-009.
(2) Make sure that there is no INOP SYS, no MAINTENANCE STATUS or no ECAM warning related to the NO CIDS 2 DATA maintenance message.
Subtask 31-32-00-810-138-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message NO CIDS 2 DATA:
Subtask 31-32-00-810-138-B ** ON A/C NOT FOR ALL - swap the DIR-CIDS, 1 [101RH] and DIR-CIDS, 2 [102RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.
- Read the AVIONICS STATUS on the MCDU AMM 31-32-00-740-009.
- replace the CFDIU [1TW] AMM 31-32-34-000-001 and AMM 31-32-34-400-001.
- do a check and repair the
wiring from the CFDIU (1TW) to the CIDS director 2 (102RH) from pins AB/3D, 3E to pins AA/11A, 11B - do a check and repair the
wiring from the CFDIU (1TW) to the CIDS director 2 (102RH) from pins AB/11D, 11E to pins AA/11D, 11E
ASM 313205.
- replace the CIDS that you installed on side 1.
A. If the test gives the maintenance message NO CIDS 2 DATA:
Subtask 31-32-00-740-223-A - swap the DIR-CIDS, 1 [101RH] and DIR-CIDS, 2 [102RH] AMM 23-73-34-000-001 and AMM 23-73-34-400-001.
- read the AVIONICS STATUS on the MCDU AMM 31-32-00-740-009.
- replace the CFDIU [1TW] AMM 31-32-34-000-001 and AMM 31-32-34-400-001.
- do a check and repair the wiring from the CFDIU (1TW) to the CIDS director 2 (102RH) from pins AB/3D, 3E to pins AA/11A, 11B
- do a check and repair the wiring from the CFDIU (1TW) to the CIDS director 2 (102RH) from pins AB/11D, 11E to pins AA/11D, 11E
ASM 313205.
- replace the CIDS that you installed on side 1.
B. Do the test given in Para. 3.B.