06/28/19
Message Overview:
Fault Message:
ACPC SECONDARY LOGIC CARD3-A17 FAIL
Fault Code:
2451308ACP
Associated CAS:
| Reporting LRU: | Secondary Logic Card (SLC) |
| System Description: | 24-50-00 |
| Schematic Diagram: | 24-51-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 24-51-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
Secondary Logic Card has detected an internal failure.
Possible Causes:
- Secondary Logic Card (SLC) 3
- Left Microprocessor Card
- A/D Converter Card
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
The following are the main functions of SLC3:
- Control of AC 3 feeder (K21) and EHP 1B (K20) contactors.
- Current sensing and over-current protection (current > 121%) for AC 3 feeder and EHP 1B feeder.
- Control of AC 3 cabin relay (K23 and CB-B3).
- Monitors voltage presence on AC 3 bus.
- Monitors three external manually operated switches.
- EHP 1B Manual Switch.
- Right FWD Engine Run Command Switch.
- Right FWD Boost Pump Inhibit Switch.
- Monitors status of AC 3 feeder, EHP 1B feeder, AC 3 cabin relay.
- Monitor thermal circuit breakers.
- AC 3 CABIN FEED (CB-B3).
- Provides interface to microprocessor.
Quick Links:
| Removal of the AC Power Center (ACPC) Fault-Tolerant Microprocessor |
AMM 24-51-05-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the AC Power Center (ACPC) Fault-Tolerant Microprocessor |
AMM 24-51-05-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the AC Power Center (ACPC) Secondary Logic | AMM 24-51-13-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the AC Power Center (ACPC) Secondary Logic | AMM 24-51-13-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the AC Power Center (ACPC) External AC-to-DC Converter |
AMM 24-51-17-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the AC Power Center (ACPC) External AC-to-DC Converter |
AMM 24-51-17-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Swap SLC 3 with SLC 1, 2 or 4.
- If system checks are good, replace SLC 3 and do close out.
- If fault remains, continue with next step.
- Swap microprocessor cards.
- If system checks are good, replace defective microprocessor card and do close out.
- If fault remains, continue with next step.
- Replace AD Converter card.
- Do close out.