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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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03/22/21

Message Overview:

Message Name:

NO OUTPUT

Message Code:

B3-006760

Associated CAS:

None

Reporting LRU: FMC 1
System Description: 34-61-00
Schematic Diagram: 34-61-00
Wiring Diagram: 31-45-01
34-61-03

Message Description:

Left FMC buses are not received by 3 of the following LRU: L-IOC, L-PFD, L-MFD, R-FMC, R-PFD, R-MFD, while the Left IOC data is present.

Possible Causes:

  • Flight Management Computer (FMC 1) (A4-FMC1)
  • Integrated-Avionics Processor System (IAPS) Power Supply (PWR 1) (A4-PWR1)
  • Integrated-Avionics Processor System (IAPS) Card Cage (ICC) (A4)

Troubleshooting Tips:

Advisory Wire/Service Bulletin:

Forum Articles/Infoservice/Newsletter: None

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 Integrated-Avionics Processor System (IAPS) Power Supply (PWR) AMM 31-45-09-000-801
Installation of the Integrated-Avionics Processor System (IAPS) Power Supply (PWR) AMM 31-45-09-400-801
Removal of the Flight Management Computer (FMC) AMM 34-61-01-000-801
Installation of the Flight Management Computer (FMC) AMM 34-61-01-400-801

Troubleshooting Recommendations:

  1. Reset IAPS circuit breakers CB1-B6, CB2-B6 and CB1-E1. Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, do close out.
      NOTE: Before you open the IAPS circuit breakers, make sure that all Engine FADEC circuit breakers are open. If the Engine FADEC circuit breakers remain closed, Engine Igniters will activate. This can cause injury to persons and damage to equipment.

  2. Swap FMC 1 with FMC 2. Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, replace defective FMC.

  3. Swap IAPS PWR 1 with IAPS PWR 2. Is the fault message still present?

    1. If YES, continue with next step.
    2. If NO, replace defective PWR.

  4. Replace IAPS Card Cage (A4).
  5. Do close out.

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