If your Brother printer is showing as offline on your Mac, there are several possible causes. Make sure the printer is turned on, connected to the network, and within range of the Wi-Fi signal. Check that the printer is selected as the default printer in your Mac's settings. You may also need to update the printer driver or software, or restart your Mac and the printer. If these steps do not resolve the issue, you may need to reset the printer's network settings or reinstall the printer driver.
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