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(WARNING)
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WHITE MESSAGE Require immediate crew attention. These messages are accompanied by flashing master warning, triple chime attenson with or without voice message or dedicated tone. Require immediate crew awareness and future crew action may be required in the form of alternate system selection or performance limitation. These message are accompanied by flashing master caution and a single chime. Indicate safe or normal system operation which require crew awareness, over and above the dark cockpit philosophy. Indicate minor failures or reduction in systems capability, which require no crew action.

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06/28/19

Message Overview:

Fault Message:

ASCA FAILED-DCPC (LEVEL C)

Fault Code:

2460485DCP

Associated CAS:

ELEC SYS FAULT
(Advisory)

Reporting LRU: DC Power Center (DCPC)
System Description: 24-40-00
Schematic Diagram: 24-42-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-42-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

The DC Power Center Battery/Ram-Air-Turbine Interface (DCPC BAT RAT I/F) Card detects a discrepancy between the External Power Contactor (EPC) status and the External Power Monitor (EPM) status.

Possible Causes:

  • Auxiliary Power Unit (APU) Starter-Contactor Assembly (ASCA) (A48)
  • Battery/Ram-Air-Turbine Interface (BAT RAT I/F) Card
  • DC Power Center (DCPC) (A63)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

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)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 APU Starter-Contactor Assembly AMM 24-62-05-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the APU Starter-Contactor Assembly AMM 24-62-05-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
DC Power Center (DCPC) Assembly CMM 24-61-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Get access to the Signboard menu and compare DCPC IN and ACPC IN labels that follow: (Only bits in gray need to be look at)
    For DCPC IN label 025
    For ACPC IN label 046

    1. If bits EPC and EPM are the same between two labels, go to step 12.
    2. If bits EPC and EPM are different between two labels, continue with next step.

  2. Get access to the APU Battery and disconnect connector A89P2.
  3. Get access to the ASCA and disconnect connector A48P2.
  4. Perform continuity checks between ASCA and ground as follow:

    From To Result
    A48P2-c Ground

    1. If there is continuity, go to step 12.
    2. If there is no continuity, continue with next step.

  5. Remove the DCPC BAT RAT I/F card.
  6. Perform a wiring checks as follow:

    From To Result
    A48P2-c P410C-13
    A48P2-b P410C-11

    1. If wiring checks are not good, repair defective wiring as required and do close out.
    2. If wiring checks are good, continue with next step.

  7. Perform continuity checks between ASCA and ground as follow:

    From To Result
    A48P2-c Ground
    A48P2-b Ground

    1. If there is continuity, go to step 9.
    2. If there is no continuity, continue with next step.

  8. Replace DCPC BAT RAT I/F Card.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  9. Disconnect DCPC connector A63P1.
  10. Perform continuity checks as follow:

    From To Result
    P410C-11 Ground
    P410C-13 Ground

    1. If there is no continuity, go to step 12.
    2. If there is continuity, continue with next step.

  11. Replace DCPC.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  12. Replace ASCA.
  13. Do close out.

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