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(WARNING)
RED MESSAGE (CAUTION)
AMBER MESSAGE (ADVISORY)
CYAN MESSAGE (STATUS)
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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01/07/26

Message Overview:

Message Name:

DCPC DIODE #1-D1 FAILED

Message Code:

2460446DCP

Associated CAS:

ELEC SYS FAULT
(Advisory)

Reporting LRU: DC Power Center (DCPC)
System Description: 24-60-00 - DC Electrical Load Distribution
Schematic Diagram: [ Global Express ]  [ G5000 ]  [ Global XRS ] 24-61-00 - Primary DC Power Distribution System
Wiring Diagram: [ Global Express ]  [ G5000 ]  [ Global XRS ] 24-61-01 - DC - Power Center (DCPC) Distribution

Message Description:

DC Power Center (DCPC) does not sense the voltage from the Diode D1.

Possible Causes:

  • Diode (D1)
  • Electronic Module (EM1)
  • DC 1 Feeder Card
  • DC Power Center (DCPC) (A63)
  • Associate Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Full Throttle Blog/Forum Articles/Infoservice/Newsletter: None

Flight Operation Notifications Manual (FONM): None

Quick Links:

Standard Aircraft Configuration for Maintenance [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM12-00-00-867-801
Connect Electrical Power to the Aircraft [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-861-801
Electrical/Electronic Safety Precautions [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-910-801
Electrostatic Discharge Safety Precautions [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-00-00-910-802
Removal of the DC Power Center (DCPC) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-00-000-801
Installation of the DC Power Center (DCPC) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-00-400-801
Operational Test of the DC Power Center (DCPC) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-00-710-801
Removal of the DC Power Center (DCPC) Secondary-Power Distribution Assembly (SPDA) Feeder [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-37-000-801
Installation of the DC Power Center (DCPC) Secondary-Power Distribution Assembly (SPDA) Feeder [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-37-400-801
Operational Test of the DC Power Center (DCPC) Secondary-Power Distribution Assembly (SPDA) Feeder [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-37-710-801
Removal of the DC Power Center (DCPC) Cabin DC Feeder [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-41-000-801
Installation of the DC Power Center (DCPC) Cabin DC Feeder [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-41-400-801
Operational Test of the DC Power Center (DCPC) Cabin DC Feeder [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-41-710-801
Removal of the DC Power Center (DCPC) Diodes (D1, D2 and D3) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-49-000-803
Installation of the DC Power Center (DCPC) Diodes (D1, D2 and D3) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-49-400-803
Operational Test of the DC Power Center (DCPC) Diodes (D1, D2 and D3) [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-49-710-803
Removal of the DC Power Center (DCPC) Electronic Modules [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-65-000-801
Installation of the DC Power Center (DCPC) Electronic Modules [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-65-400-801
Operational Test of the DC Power Center (DCPC) Electronic Modules [ G5000 ]  [ Global Express ]  [ Global XRS ] AMM24-61-65-710-801

Troubleshooting Recommendations:

  1. With aircraft on Batteries power only; access DC ELEC synoptic page and check the status (color) of the race track around DC BUS 1 (Take a picture for future reference.)

    1. If green, replace the SSPC 1 (K7) contactor and do close out.
    2. If amber or empty, continue with next steps.

  2. Interchange DC 1 feeder card with DC 2 feeder card. Does the fault follow the card?

    1. If YES, replace the DC 1 feeder card and do close out.
    2. If NO, continue with next step.

  3. Remove DC1 Feeder card in DCPC. Disconnect EM1 connector P105. Perform a resistance check for a short circuit as follows:

    From To Result
    P105-6 P105-12

    1. If there is a short circuit, replace D1 and do close out.
    2. If there is no short circuit, continue with next step.

  4. Perform a resistance check as follows:

    From To Result
    P105-7 Ground
    P105-11 Ground

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

  5. Perform a continuity check as follows:

    From To Result
    P105-7 P131A-7
    P105-11 P131A-11

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

  6. Perform a resistance check on EM1 as follows:

    From To Value Result
    J105-5 J105-6 562 Ω
    J105-6 J105-7 24 KΩ
    J105-12 J105-11 10 KΩ

    1. If the resistance values are incorrect, replace EM1 and do close out.
    2. If the resistance values are correct, continue with next step.

  7. Perform a continuity check as follows:

    From To Result
    P105-6 D1-Anode

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

  8. Perform a continuity check as follows:

    From To Result
    P105-12 D1-Cathode

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

  9. Replace Diode D1. Is the fault resolved?

    1. If YES, do close out.
    2. If NO, continue with next step.

  10. Replace DCPC.
  11. Do close out.

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