DOC AIRBUS | TSM A320FLoss of the Power Supply for the Static Probe
TASK 30-31-00-810-806-A
Loss of the Power Supply for the Static Probe
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 30-31-00-710-060-A 4. Fault Isolation
Subtask 30-31-00-810-055-A
[Rev.8 from Aug 2018]
2026.04.04 04:29:34 UTC
Loss of the Power Supply for the Static Probe
1. Possible Causes
- PHC-1 [6DA1]
wiring between the PHC 1 pin A/U and the ground terminal wiring between the PHC 1 pin A/<M and the circuit breaker (5DA1) - C/B-ANTI ICE/PROBES/1/STATIC [5DA1]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 30-31-00-710-001 | Operational Test of the Probe Ice Protection |
| ASM 303101 | |
| AMM 30-31-34-000-002 | Removal of the Probe Heat Computer (PHC) |
| AMM 30-31-34-400-002 | Installation of the Probe Heat Computer (PHC) |
Subtask 30-31-00-710-060-A 4. Fault Isolation
Subtask 30-31-00-810-055-A
A. If the test gives the maintenance message CHECK STATICS PHC1 SUPPLY:
Subtask 30-31-00-710-061-A - do a check of the status of the circuit breaker (5DA1).
- do a check for 28VDC at pin A/<M of the PHC 1 (6DA1).
- replace the PHC-1 [6DA1] AMM 30-31-34-000-002 and AMM 30-31-34-400-002.
- do a check for a ground signal at pin A/U of the PHC 1 (6DA1):
- repair the
wiring between the PHC 1 pin A/U and the ground terminal ASM 303101.
- do a check of the
wiring between the PHC 1 pin A/<M and the circuit breaker (5DA1) .
- repair the above wiring.
- replace the circuit breaker (5DA1).
- close the circuit breaker.
- replace the PHC-1 [6DA1] .
- do a check for a short to ground at the
wiring between the PHC 1 pin A/<M and the circuit breaker (5DA1) .
- repair the related wiring.
- replace the C/B-ANTI ICE/PROBES/1/STATIC [5DA1] .
- replace the PHC-1 [6DA1] .
B. Do the operational test given in Para. 3.