background
x
loader
Troubleshooting
arrow By ATA By Message Color By Observed Faults by MDCBy Tips

Select color for CAS message that you wish to troubleshoot

(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.

This page includes :

For AOG assistance contact:

CRC Montreal (YUL)
Quick Links

04/08/21

Message Overview:

Message Name:

NO R-IOC-2 BUS INPUT

Message Code:

B3-506947

Associated CAS:

None

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

Message Description:

ARINC 429 R-Input/Output Concentrator (IOC)-2 databus is reported inactive by the File Server Unit (FSU) 2 while the right transponder is not reporting it as inactive.

Possible Causes:

  • Junction Box (JB2)
  • File Server Unit 2 (FSU 2) (A222)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Quick Links:

Removal of the Junction Box JB2 AMM 24-63-05-000-803
Installation of the Junction Box JB2 AMM 24-63-05-400-803
Operational Test of Junction Box JB2 Card 2 AMM 24-63-05-710-827
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
Electrical Connectors - Maintenance Practice - ALL SPM 20-20-00-02

Troubleshooting Recommendations:

  1. Reset R FILE SERVER (CB2-C6) circuit breaker.

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

  2. Do wiring check of the ARINC 429 data bus R-IOC-2 between Junction Box 2 (Board 5 - TP 13 ARINC Hi / TP 16 ARINC Lo) and FSU 2 connector A222P1. Repair/replace as required.

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

  3. Swap FSUs.
  4. Do close out.

Registered and/or unregistered trademarks of Bombardier Inc. or its subsidiaries. © 2015 Bombardier Inc. All rights reserved.