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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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Quick Links

05/10/24

Message Overview:

Fault Message:

DCPC DIODE #6-D6 FAILED

Fault Code:

2460451DCP

Associated CAS:

ELEC SYS FAULT
(Advisory)

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 ]

Message Description:

DC Power Center (DCPC) does not sense the voltage from the Diode D6.

Possible Causes:

  • DC Power Center (DCPC) Diode (D6)
  • Electronic Module (EM) 5
  • DC ESS Feeder Card
  • Cabin Feeder Card
  • DC Power Center (DCPC) (A63)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

NOTES: 

  • EM5 and connector P502 are located in the DCPC circuit Breaker section.

    EM5 Location DCPC
    em5_location dcpc cb section

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)Cabin DC Feeder AMM 24-61-41-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the DC Power Center (DCPC)Cabin DC Feeder AMM 24-61-41-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the DC Power Center (DCPC)Diodes (D6 and D7) AMM 24-61-49-000-802 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the DC Power Center (DCPC)Diodes (D6 and D7) AMM 24-61-49-400-802 [ 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 ]
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. Check if DCPC DIODE #7-D7 FAILED fault also exists.

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

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

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

  3. Remove DC ESS feeder card and cabin feeder card in DCPC. Disconnect EM5 connector P502. Perform a resistance check for a short circuit as follows:
    WARNING: Before getting access to EM5 connector P502, disconnect Avionics and APU Battery.

    Diode (D6) Schematic P502 Location Diode (D6) Location
    diode_d6_location p502_location diode_d6_location
    From To Result
    P502-2 P502-7

    1. If there is a short circuit, replace D6 and do close out.
    2. If there is no short circuit, continue with next step.

  4. Perform a continuity check as follows:

    From To Result
    P502-1 Ground
    P502-8 Ground

    1. If there is continuity, go to step 10.
    2. If there is no continuity, continue with next step.

  5. Perform a continuity check as follows:

    From To Result
    P502-1 P331A-11
    P502-8 P531A-11

    1. If there is no continuity, go to step 10.
    2. If there is continuity, continue with next step.

  6. Perform a resistance check on EM1 as follows:

    From To Value Result
    J502-4 J502-2 562 Ω
    J502-2 J502-1 24 KΩ
    J502-7 J502-8 10 KΩ

    1. If the resistance values are incorrect, replace EM5 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
    P502-2 D6-Anode

    1. If there is no continuity, go to step 10.
    2. If there is continuity, continue with next step.

  8. Perform a continuity check as follows:

    From To Result
    P502-7 D6-Cathode

    1. If there is no continuity, go to step 10.
    2. If there is continuity, continue with next step.

  9. Replace Diode D6. 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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