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Youll need to rerun the network setup on the laser-jet printer, reconnecting it to your network.
And then, disconnect and reconnect the ipad to the same network, and then see if you can find the printer.
( also, it sometimes helps to unplug the wireless router for 1 minute, and then plug it back in. And do the same with the printer )
try those steps,l and let me know if anything changes, whether this works or not, or whether you need more help
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