In order for us to better assist you, we will need some additional information. Do you mind answering a few questions so we can get a better picture of your situation?
1. Is the (Wi-Fi) indicator on your unit solid and are you connected on the correct Network?
2. If you power cycle the router does the issue continue? "Unplug the power cord to your router and wait a few minutes and plug it back in". Are you able to print at this point?
3. How far is your unit from your router/access point?
4. Did you install using the disk or download the software from Canons website?
5 Are you receiving a specfic error when you attempt to print?
6. What is your MF624CW's IP Address? To view your MF624CW's IP Address using your printer's operation panel, press (Status Monitor) <Network Information><IPv4><IP Address>
Note: There is a direct connection mode for mobile devices on the imageCLASS MF628Cw that when enabled, prevents communications between the printer and the router. Ensure this setting is not enabled. Perform the following steps:
1. Tap <Menu> in the <Home> Screen.
2. Tap <Network Settings>. If the logon screen appears, enter the correct ID and PIN using the numeric keys, and then press Logging on to the Machine
3. Tap <Enable Direct Connection>.
4. Tap <Off>.
5. Turn OFF the machine, wait for at least 10 seconds, and turn it back ON.
Please note, Canon's Forum is not intended for immediate help, but a place to allow for the Community to give you assistance and feedback. If this is an urgent support need, please use the link below to reach our friendly Technical Support Team:
http://Canon.us/ContactLI