DOC AIRBUS | TSM A320FBlank Display on the Front Face of ISIS
TASK 34-22-00-810-817-A
Blank Display on the Front Face of ISIS
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 34-22-00-700-063-A ** ON A/C NOT FOR ALL
Subtask 34-22-00-810-073-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:32:57 UTC
Blank Display on the Front Face of ISIS
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 342201 | |
| AMM 34-22-25-000-001 | Removal of the ISIS Indicator |
| AMM 34-22-25-400-001 | Installation of the ISIS Indicator |
Subtask 34-22-00-700-063-A ** ON A/C NOT FOR ALL
A. Test
(1) Not applicable, the fault is evident.
4. Fault Isolation(1) Not applicable, the fault is evident.
Subtask 34-22-00-810-073-A ** ON A/C NOT FOR ALL
A. Replace the MODULE DIODE UNIT [2401VD] .
(1) If the fault continues:
(1) If the fault continues:
- do a check for 28VDC at pin A/D of the ISIS indicator (22FN) ASM 342201.
- repair the aircraft wiring between the ISIS indicator (22FN) pin A/D and the terminal block 2401VT pin 3/U ASM 342201.
- replace the IND-ISIS [22FN] AMM 34-22-25-000-001 AMM 34-22-25-400-001.