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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:

DCPC DIODE #7-D7 FAILED

Fault Code:

2460452DCP

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 ]

Fault Description:

DC Power Center (DCPC) does not sense the voltage from the Diode D7.

Possible Causes:

  • DC Power Center (DCPC) Diode (D7)
  • Electronic Module (EM) 5
  • DC 1 Feeder Card
  • Cabin Feeder 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)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 #6-D6 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 1 feeder card with DC 2 feeder card. Does the fault follow the card?

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

  3. Remove DC 1 Feeder card and cabin feeder card in DCPC. Disconnect EM5 connector P502. Perform a resistance check for a short circuit as follows:

    From To Result
    P502-5 P502-7

    1. If there is a short circuit, replace D7 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
    P502-6 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
    P502-6 P131A-11
    P502-8 P531A-11

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

  6. Perform a resistance check on EM5 as follows:

    From To Value Result
    J502-4 J502-5 562 Ω
    J502-5 J502-6 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
    P502-5 D7-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 D7-Cathode

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

  9. Replace Diode D7. 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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