Pin Program BLEED PRESS DMD Fault
TASK 21-58-00-810-821-A
Pin Program BLEED PRESS DMD Fault
1. Possible Causes
A. Referenced Information
3. Fault Confirmation
Subtask 21-58-00-710-090-A ** ON A/C NOT FOR ALL
Subtask 21-58-00-810-082-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:24:50 UTC
Pin Program BLEED PRESS DMD Fault
1. Possible Causes
- wiring
- CSAS CONTROL UNIT [100HW]
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| ASM 215301 | |
| AMM 21-58-00-710-001 | Operational Test of the Conditioned Service Air System without Bleed Air |
| AMM 21-58-34-000-001 | Removal of the CSAS Control Unit |
| AMM 21-58-34-400-001 | Installation of the CSAS Control Unit |
Subtask 21-58-00-710-090-A ** ON A/C NOT FOR ALL
A. Do the operational test of the conditioned service air system without bleed air AMM 21-58-00-710-001.
4. Fault IsolationSubtask 21-58-00-810-082-A ** ON A/C NOT FOR ALL
A. If the test gives the maintenance message WRG:PIN PROG BLEED PRESS DMD:
Subtask 21-58-00-710-091-A ** ON A/C NOT FOR ALL - do a check and repair the wiring from:
- the CSAS CONTROL UNIT (100HW) pin AA/6H to ground,
- the CSAS CONTROL UNIT (100HW) pin AA/7H to ground ASM 215301.
- replace the CSAS CONTROL UNIT [100HW] AMM 21-58-34-000-001 and AMM 21-58-34-400-001.
B. Do the test as given in the Para. 3.A.