Problem

You have a brother all-in-one model MFC-J6530DW or similar that has previously worked on wireless but no longer is reachable over wi-fi.

Resolution

The problem may be that the wireless settings have become corrupted and that the printer cannot be detected even when running the printer setup; proceed as below.

Step 1: Reset wireless network settings

1. Press Settings > All Settings > Network > Network Reset.
2. The message confirming reset will be displayed. Press OK button for two seconds. The machine will restart and reset the network settings.

Step 2: Install printer driver

1. Run the setup as normal and select "Wireless setup" option.
2. The setup will scan for the printer and may print to use the exist network settings.
3. Click Next button to join the printer to the existing Wi-Fi network.

Step 3: Select wireless network and enter wireless details

1. If the printer is not detected you may try joining it to the Wi-Fi network via the front panel.
2. On the front panel touch display press Settings > All Settings > Network > WLAN > Setup Wizard].
3. When Enable WLAN? appears, press Yes button.
4. The printer then searches for networks from which you can choose.
5. Then enter the network password to connect.

Step 4: Use a USB or ethernet as apropriate
In some cases wireless setup cannot be completed and in such cases you can use either a direct USB connection or Ethernet via the router if it is near enough to permit connection to the router.