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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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04/07/21

Message Overview:

Message Name:

BLOCKING EQUATION

Message Code:

B3-478739

Associated CAS:

None

Reporting LRU: FSU 1 CHARTS
System Description: 46-00-00
Schematic Diagram: 46-21-00
Wiring Diagram: 46-21-01

Message Description:

This equation does not produce a fault. It will block lower priority faults if the application is not enabled.

Possible Causes:

  • File Server Unit 1 (FSU 1) (A221)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. {Term Definitions}

    1. FSU1-30 1X 353 01 EXCT XXXX-XXXX XXXX-XXXX XXXX-XTXX 353 :11;APPLICATION NOT ENABLED

Quick Links:

Removal of the File Server Unit (FSU) AMM 46-21-01-000-801
Installation of the File Server Unit (FSU) AMM 46-21-01-400-801
Load the Electronic Charts Database to the File Server Unit (FSU) AMM 46-21-01-970-803
Removal of the External Compensation Unit - IFIS AMM 46-21-17-000-801
Installation of the External Compensation Unit - IFIS AMM 46-21-17-400-801
Load the Encrypted Application Key (EAK) to the External Compensation Unit (ECU) AMM 46-21-17-970-801
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

None

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