Brother MFC-7840W Quick Setup Guide
![Brother MFC-7840W manual cover](/images/xwiBjgkaNfcqTYZLnBHMTHbY/thumbs/thumb175x175.webp)
To connect your Brother MFC-7840W to a wireless network, press the Menu button on your printer. Navigate to Network > WLAN > Setup Wizard. Follow the prompts to select your network and enter your Wi-Fi password.
First, ensure that the printer is powered on and connected to the computer or network. Check for any error messages on the display. If there are no visible issues, try restarting the printer and the computer. Also, ensure that the print queue is clear.
To clear a paper jam, open the front cover and remove the drum unit and toner cartridge assembly. Carefully remove any jammed paper. Reinstall the drum unit and toner cartridge, then close the cover. Ensure that the paper is loaded correctly in the tray.
Open the front cover and remove the drum unit and toner cartridge assembly. Push down the green lock lever and take the toner cartridge out of the drum unit. Unpack the new toner cartridge and insert it into the drum unit until it clicks into place. Reinstall the assembly into the printer and close the cover.
Check that the toner cartridge is not empty and is installed correctly. Ensure that the drum unit is clean and not damaged. Run a printer cleaning cycle from the printer menu to clear any blockages in the print head.
Place the document you wish to scan on the scanner glass or in the automatic document feeder (ADF). Press the Scan button on the printer, and select your preferred scan settings. Confirm and start the scan process.
Yes, you can use your Brother MFC-7840W with a mobile device by installing the Brother iPrint&Scan app on your smartphone or tablet. Ensure both the device and printer are connected to the same wireless network.
To perform a factory reset, press the Menu button, then go to Initial Setup > Reset > Factory Reset. Confirm your selection when prompted. Note that this will erase all custom settings and restore the printer to its original state.
Regular maintenance includes cleaning the printer’s exterior, the scanner glass, and the corona wire in the drum unit. You should also regularly check for firmware updates and ensure that the printer software is up to date.
To improve print quality, ensure that you are using the correct type of paper and that it is loaded properly. Clean the drum unit and replace the toner cartridge if necessary. Adjust the print density settings via the printer's control panel.