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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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04/08/21

Message Overview:

Message Name:

FSU CROSS-TALK FAILURE

Message Code:

B3-509203

Associated CAS:

None

Reporting LRU: FSU 2 DL GWX
System Description: 46-00-00
Schematic Diagram: 46-21-00
Wiring Diagram: 31-45-13
46-21-03

Message Description:

File Server Unit (FSU) is reporting X-Talk bus is not sending data. Dual FSUs are installed. UV GWX data is transmitted on this bus.

Possible Causes:

  • Left File Server Unit 1 (FSU 1) (A221)
  • Right File Server Unit 2 (FSU 2) (A222)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. Message# = 8
  2. {Term Definitions}

    1. OPT1-88 XX 360 NA EXCT CSU WD-13 XTXX-XXXX XXXX-XXXX 360-13: 15;FSU RIGHT
    2. OPT1-87 XX 360 NA EXCT CSU WD-13 XXTX-XXXX XXXX-XXXX 360-13: 14;FSU LEFT
    3. FSU1-21 1X 351 01 EXCT XXXX-XXXX XXXX-XTXX XXXX-XXXX 351 :19;CROSSTALK CONNECTION LOST

Quick Links:

Operational Test of the Single Integrated Flight Information System (IFIS) AMM 46-21-00-710-801
Operational Test of the Dual Integrated Flight Information System (IFIS) AMM 46-21-00-710-803
Load the FSA-5000 Application Software to the File Server Unit (FSU) AMM 46-21-01-970-801
Load the Universal Graphical Weather Database to the File Server Unit (FSU) AMM 46-21-01-970-805
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
Wiring - Maintenance Practices - ALL SPM 20-12-00-02
Wire Repair - Maintenance Practices - ALL SPM 20-12-10-02

Troubleshooting Recommendations:

  1. FSU is reporting X-Talk bus is not sending data. Dual FSUs are installed. UV GWX data is transmitted on this bus.

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