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If the error persists across multiple computers and cables, a firmware update is necessary.

The device halts operation and displays an "Internal Error" message on the LCD panel. The error log (and network interface status) indicates that the printer received a data packet that failed integrity checks ("corrupted data verified"). Standard power cycling failed to clear the error immediately, as the corrupted job remained trapped in the active memory.

The issue is predominantly software-side. The following changes must be implemented on the host workstation:

Restoring the original settings can often bypass internal software glitches. Press on the printer control panel. Navigate to System Setup (or Setup) > Reset > Reset All . Confirm the reset and allow the printer to restart. 4. Reinstall or Update Drivers