Hello,
I have seen a few posts covering sporadic freezes of the printer and all pointed to a "new" firmware. Unfortunately these posts are from 2013 and the firmware evolved.
I now have the LWP1CN1409BR on the printer and from time to time it freezes while printing (primary from an iPad via AirPrint) or while receiving a fax.
As stated in the other posts the touchpanel wont respond and so does the power switch. The only way to resolve the problem is to unplug the printer and hope for the best.
Exchanging the printer did not really help, so my guess was it might be with our network or office, but reading the posts I am sure that the old bug resolved somewhen in 2013 returned to the firmware.
I am happy to try every suggestion.
regards,
Bernd