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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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03/04/21

Message Overview:

Message Name:

CONFIGURATION ERROR

Message Code:

B3-006486

Associated CAS:

None

Reporting LRU: DCU 1
System Description: 31-41-00
Schematic Diagram: 31-41-00
Wiring Diagram: 31-41-01
31-41-02
31-41-03
31-41-13

Message Description:

Data Concentrator Unit (DCU) Channel A has an invalid configuration.

Possible Causes:

  • Data Concentrator Unit (DCU) (A14)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Data Concentrator Unit (DCU) AMM 31-41-01-000-802
Installation of the Data Concentrator Unit (DCU) AMM 31-41-01-400-802
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Reset EICAS DCU A Circuit Breaker CB1-D1 and EICAS DCU B Circuit Breaker CB2-D1. Is the fault message still present?

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

  2. Confirm the configuration strapping of the DCU.

    Measurement at Expected Result Result
    Conn. A14CP1 - 7B Aircraft Ground
    Conn. A14CP1 - 8K Aircraft Ground
    Conn. A14CP1 - 7A Aircraft Ground
    Conn. A14CP1 - 7K Aircraft Ground

    1. If the check is satisfactory, replace defective DCU (A14).
    2. If the check is not satisfactory, repair wiring.

  3. Do close out.

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