This section outlines the most common fault codes and recommended corrective actions.

Common Fault Codes & Solutions

Max Fonts

  • Cause: Microcontroller overload
  • Solution:
    1. Click Download
    2. Save your layout
    3. Restart the marking machine

Key Expired

  • Cause: License key expiration
  • Solution: Contact CMT to obtain an updated license key

Marking Machine Application Task Not Running

  • Cause: Malfunction of firmware
  • Solution: Restart the controller or power cycle the controller

Marking Machine Utility Task Not Running

  • Cause: Malfunction of firmware
  • Solution: Restart the controller or power cycle the controller

Timed Out While Holding

  • Possible Causes:
    • Marking head is not plugged in
    • Mechanical issue with the marking head
  • Solution:
    • Verify all connections
    • If the issue persists, the marking head may need to be returned to CMT for repair

Overcurrent Fault

  • Possible Causes:
    1. Marking machine has been idle for an extended period
    2. Rapid software commands (e.g., aborting a mark and immediately commanding Home)
  • Solution:
    1. Press the Home hardware button on the controller

General Recovery Procedure

When in doubt or if the issue is unclear:

  1. Download the layout again
  2. If unresolved, restart or power cycle the controller

If the issue persists and you have access:

  • Test the marking machine using a known working controller
  • Ensure the same version of I-Mark software is installed

Important: When using integrated systems, all controllers must run the same software version.

If no resolution is achieved, contact CMT for service or repair.

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