| Problem | Solution | |-----------------------------|--------------------------------------------------------------------------| | Printer not detected over USB | Try different USB port, replace cable, restart print spooler service. | | Wrong character print | Set correct emulation (Epson LQ or IBM) in printer settings + driver. | | Driver not available for Windows 11 | Use Windows 10 driver in compatibility mode. | | Parallel port not working | Enable LPT port in BIOS, check ECP/EPP mode settings. | | Linux not printing | Check lpstat -t , ensure user is in lpadmin group. |