1. Print the network configuration page: press the network configuration page button on the wireless printer or the menu button on the printer control panel to find the network settings or network configuration, and then print the network configuration page.
2. Find the user name: The network configuration page should contain detailed information about the printer's current network settings, including the network name, password and user name. Find the currently set user name and know the user name you need to re-enter.
3. Enter the printer settings: enter the printer settings through a computer or mobile device and find the network settings or Wi-Fi settings.
4. Connect to a printer: Make sure you are currently connected to the correct network and find your wireless printer. You may need to use the scan function on the device or manually enter the IP address of the printer to find it.
5. Re-enter the user name: find the user name field in the network settings, and then re-enter the user name to be used. If you need to enter other settings, such as password or IP address, please make corresponding changes.
6. Test printing: After reconfiguring the user name of the wireless printer, you can try to print a test page to ensure that your printer is successfully connected to the network and can work normally.
Please note that in some cases, you may need to reset the printer's network settings and restore the factory settings. This usually requires a special reset operation on the printer control panel. If you are not sure how to do this, please refer to your printer documentation or contact the customer support service of the printer manufacturer.