06/28/19
Message Overview:
Fault Message:
DCPC/DC BUS 1 FAILED
Fault Code:
2460502DCP
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 Power Center (DCPC) internal fault is reported when DC BUS 1 is not powered or DC BUS 1 is isolated by Primary Logic Cards due to BUS fault detection.
Possible Causes:
- Contactor (K1)
- Electronic Module (EM1)
- Secondary-Power Distribution (SPDA) Feeder Assembly DC BUS 1 Card
- DC Power Center (DCPC) (A63)
- Associated Wiring
Troubleshooting Tips:
Advisory Wire/Service Bulletin: None
Forum Articles/Infoservice/Newsletter: None
NOTE: Troubleshoot any other related CAIMS message before proceeding. Make sure that TRU1 is powered before going ahead.
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) Secondary-Power Distribution Assembly (SPDA) Feeder |
AMM 24-61-37-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the DC Power Center (DCPC) Secondary-Power Distribution Assembly (SPDA) Feeder |
AMM 24-61-37-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the DC Power Center (DCPC) L-Series Contactor | AMM 24-61-53-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the DC Power Center (DCPC) L-Series Contactor | AMM 24-61-53-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Removal of the DC Power Center (DCPC) Electronic Modules | AMM 24-61-65-000-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Installation of the DC Power Center (DCPC) Electronic Modules | AMM 24-61-65-400-801 [ Global Express ] [ G5000 ] [ Global XRS ] |
| Wire Repair - Maintenance Practices - ALL | SPM 20-12-10-02 [ Global Express ] [ G5000 ] [ Global XRS ] |
Troubleshooting Recommendations:
- In CAIMS, SYSTEM DIAG, ATA 24, DC POWER CENTER DCPC_A, LRU TEST, DC POWER DISTRIBUTION page 3/3. Check the status of TLC 1.
- If status is closed, continue with next step.
- If status is open, continue with step 3.
- Open DCPC contactor assembly cover and access K1. Check for 28 VDC input on A1 and output on terminal A2.
- If voltage is present on A1 but not on A2, replace contactor K1 and do close out.
- If voltage is present on A1 and A2, continue with step 5.
- Shut down aircraft power, disconnect P104 from contactor K1 and apply power to the aircraft. Make sure 28 VDC is present on pin 1.
- If 28 VDC is not present, continue with next step.
- If 28 VDC is present, replace contactor K1 and do close out.
- Replace Electronic Module EM1.
- If system checks are good, do close out.
- If fault remains, continue with next step.
- Swap SPDA Feeder Assembly DC BUS 1 (Card 1) Card with DC BUS 2 (Card 2).
- If system checks are good, replace SPDA Feeder Assembly DC BUS 1 (Card 1) Card and do close out.
- If fault remains, replace EM1 If NOT already done.
- If fault remains and EM1 has been replaced, continue with next step.
- Replace DCPC.
- Do close out.