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Troubleshooting
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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.

For AOG assistance contact:

CRC Montreal (YUL)
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Steps to do before replacing a Junction Box

  1. Make sure the components (relays, diodes, and circuit cards (PCBs)) in the JB are serviceable. If they are defective, replace the applicable PCB.
  2. Perform continuity check of JB.
  3. If the continuity check passes, do not replace JB.
  4. If the continuity check fails, replace JB.

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