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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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10/06/21

Message Overview:

Message Name:

DATALINK INTERFACE FAIL

Message Code:

B3-532262

Associated CAS:

None

Reporting LRU: CKPIT VOICE REC
System Description: 23-71-00
Schematic Diagram: 23-71-00
Wiring Diagram: 23-71-01

Message Description:

CVR is reporting a failed Datalink interface. CVR is not receiving Datalink data from CMU or Pin 56 (datalink valid) is open at CVR.

Possible Causes:

  • Cockpit Voice Recorder (CVR) (A129)
  • Cockpit Voice Recorder (CVR) Tray
  • Radio Interface Unit (RIU) 1 (A17)
  • RIPS Interface (if installed) (A229)
  • Associated Wiring

Troubleshooting Tips:

Advisory Wire/Service Bulletin: None

Forum Articles/Infoservice/Newsletter: None

Fault Confirmation Procedure:

  1. Message# = 4
  2. Comp Id = A129
  3. Fault Logged = AIR,TAXI
  4. Status = FAILED/WIRING
  5. {Term Definitions}

    1. CVR1-8 XX 350 00 EXCT XXXX-XXXX XXXX-XXTX XXXX-XXXX 350 :18;DATALINK INTERFACE FAIL

Quick Links:

Removal of the Cockpit Voice Recorder (CVR) AMM 23-71-01-000-801
Installation of the Cockpit Voice Recorder (CVR) AMM 23-71-01-400-801
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. Check CVR to RIU 1 wiring interface between (CVR) A129 P1 pin 34 and (RIU 1) A17P2 pin 5.
  2. Check CVR to RIU 1 wiring interface between (CVR) A129 P1 pin 33 and (RIU 1) A17P2 pin 6.
  3. CVR is reporting a failed Datalink interface. CVR is not receiving Datalink data from CMU or Pin 56 (datalink valid) is open at CVR.

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