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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

08/09/21

Message Overview:

Message Name:

CSU STRAP - A/C TYPE ERROR

Message Code:

B3-006471

Associated CAS:

None

Reporting LRU: CSU 1
System Description: 31-45-00
Schematic Diagram: None
Wiring Diagram: None

Message Description:

IOC reports Configuration Strapping Unit 1 does not match the aircraft type.

Possible Causes:

  • Configuration Strapping Unit 1 (CSU) (A4-CSU)
  • Input/Output Concentrator Unit (IOC) (A4-IOC)
  • Integrated Avionics Processor System (IAPS) Card Cage (ICC) (A4)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Configuration Strapping - BD-100
(LABEL 360 - word 8 aircraft type)
Aircraft Type code I Aircraft Type code II
Bit # 8 7 6 5 4 3 2 1
Setting 1 0 1 1 0 0 1 1

  • Switch UP or Strap present = Logic 0.
  • Switch Down or Strap broken out = Logic 1.

Strapping for CSU 1 & 2 can be compared by simultaneously looking at CSU DATA (LEFT) and CSU DATA (RIGHT) on the MDC CONFIGURATION DATA page.

Quick Links:

Removal of the Integrated-Avionics Processor System (IAPS) Card Cage (ICC) AMM 31-45-01-000-801
Installation of the Integrated-Avionics Processor System (IAPS) Card Cage (ICC) AMM 31-45-01-400-801
Removal of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-000-801
Installation of the Input/Output Concentrator Unit (IOC) AMM 31-45-05-400-801
Removal of the Configuration Strapping Unit (CSU) AMM 31-45-17-000-801
Configuration Setting of the Configuration Strapping Unit (CSU) AMM 31-45-17-280-801
Installation of the Configuration Strapping Unit (CSU) AMM 31-45-17-400-801
Standard Practices - Replace Wiring SPM 20-12-00-02
Standard Practices - Wire Repair SPM 20-12-10-02

Troubleshooting Recommendations:

  1. Do the Configuration Setting of the Configuration Strapping Unit. Re-configure as required.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  2. Interchange CSUs.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  3. Interchange IOCs.

    1. If system checks are good, do close out.
    2. If fault remains, continue with next step.

  4. Replace IAPS Card Cage.
  5. Do close out.

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