06/28/19
Message Overview:
Fault Message:
DCPC DC EMER BUS FAILED
Fault Code:
2460506DCP
Associated CAS:
| Reporting LRU: | DC Power Center (DCPC) |
| System Description: | 24-60-00 |
| Schematic Diagram: | 24-61-00 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wiring Diagram: | 24-61-01 [ Global Express ] [ G5000 ] [ Global XRS ] |
Fault Description:
- DC EMER BUS is not powered.
- DC EMER BUS is isolated by the Primary Logic Cards (PLCs) due to BUS fault detection.
Possible Causes:
- Battery Bus (BATT BUS)
- Diode (D6)
- Circuit Breaker (CBC4)
- Circuit Breaker (CBC6)
- Contactor (K6)
- Battery/Ram-Air-Turbine Interface (BATT/RAT IF) Card
- DC Power Center (DCPC) (A63)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None: None
Forum Articles/Infoservice/Newsletter: None
NOTE:
- Make sure that the DCPC Circuit Breakers (CBC4 and CBC6) are not tripped, physically
- Make sure that Avionics Battery direct BUS is powered
Quick Links:
| Removal of the DC Power Center (DCPC) | AMM 24-61-00-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the DC Power Center (DCPC) | AMM 24-61-00-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the DC Power Center (DCPC) Primary Logic | AMM 24-61-09-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the DC Power Center (DCPC) Primary Logic | AMM 24-61-09-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the DC Power Center (DCPC) Battery/Ram-Air-Turbine Interface Unit |
AMM 24-61-33-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the DC Power Center (DCPC) Battery/Ram-Air-Turbine Interface Unit |
AMM 24-61-33-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the DC Power Center (DCPC) Circuit Breakers | AMM 24-61-45-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the DC Power Center (DCPC) Circuit Breakers | AMM 24-61-45-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- Get access to CAIMS active faults, check for the following fault messages, troubleshoot them one by one if they are posted:
- Access DCPC contactor assembly. Perform a voltage check for 28 VDC as follows:
From To Result CBC4 contact 2 Ground - If there is no 28 VDC, replace CBC4 and do close out.
- If there is 28 VDC, continue with next step.
- Perform a voltage check for 28 VDC as follows:
From To Result CBC6 contact 2 Ground - If there is no 28 VDC, replace CBC6 and do close out.
- If there is voltage, continue with next step.
- Access DCPC contactor assembly. Perform a voltage check for 28 VDC as follows:
From To Result K3-A2 Ground - If there is no 28 VDC, replace K3 and do close out.
- If there is 28 VDC, continue with next step.
- Remove PLC 1, PLC 2 and PLC 3. Perform a continuity check as follows:
From To Result P110B-8 Ground P210B-8 Ground P310B-8 Ground - If there is continuity, go to step 8.
- If there is no continuity, continue with next step.
- Perform a continuity check as follows:
From To Result P110B-35 K6-B2 P210B-35 K6-B2 P310B-35 K6-B2 - If there is continuity, go to step 8.
- If there is no continuity, continue with next step.
- Remove BATT/RAT I/F card. Perform a continuity check as follows:
From To Result P410B-25 Ground P410B-27 Ground - If there is no continuity, continue with next step.
- If there is continuity, replace BATT/RAT IF card and do close out.
- Replace DCPC.
- Do close out.