| Symptom | Probable Cause | Solution | |------------------------------------------|-----------------------------------------------|--------------------------------------------------------------------------| | Printer not detected after reboot | USB selective suspend | Disable power management for USB root hubs in Device Manager | | Garbled text or "code dump" prints | Incorrect driver (text-only vs. ESC/POS) | Switch driver to "CITAQ H10 (ESC/POS)" | | Paper cut command ignored | Missing bidirectional communication | Enable "Printer Status" in driver settings; ensure IEEE1284.4 is active | | Print job stuck in queue (Windows) | Spooler deadlock due to PrintProcessor mismatch | Set spooler to "Print directly to printer" |