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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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Quick Links

07/01/19

Message Overview:

Fault Message:

DISCRT WATCHDOG CDU 1B

Fault Code:

2473001CDU

Associated CAS:

ELEC SYS FAULT
(Advisory)

Reporting LRU: Electrical Management System Control-and-Display Unit (EMS CDU) 1
System Description: 24-70-00
Schematic Diagram: 24-70-00 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Wiring Diagram: 24-70-01 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Fault Description:

Electrical Management System Control-and-Display Unit (EMS CDU) 1 Channel B is reporting that there is a fault detected internally with the watchdog timer.

Possible Causes:

  • Electrical Management System Control Display Unit (EMS CDU) 1 (A94)
  • Data Acquisition Unit (DAU) 1 (A17)

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Electrical Management System
Control-and-Display Units (EMS CDU)		 AMM 24-70-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Electrical Management System
Control-and-Display Units (EMS CDU)		 AMM 24-70-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Removal of the Data Acquisition Units (DAU) AMM 31-42-01-000-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]
Installation of the Data Acquisition Units (DAU) AMM 31-42-01-400-801 [ Global Express ]  [ G5000 ]  [ Global XRS ]

Troubleshooting Recommendations:

  1. Perform a complete Aircraft power reset. Is the CAIMS fault still present?

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

  2. Swap DAU 1 with DAU 2. Did the fault follow the DAU?

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

  3. Replace EMS CDU 1.
  4. Do close out.

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