Check your COM port settings in Device Manager.
Modifying machine parameters is high-stakes work. An incorrect value in the 4720 range can bypass physical limit switches. Always verify your changes at 5% rapid override before running a full production cycle. Conclusion 4720 parameter tool download exclusive
Backing up or restoring the printer's internal settings when replacing a mainboard or printhead. Ink System Cleaning: Check your COM port settings in Device Manager
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