Question about Canon LC-3175 Laser Fax
Open the paper tray and extend it to legal, then place legal paper on the thing. It is the only way to solve this problem.
If this wont woek, I suggtes check this Technical Bulletin (click the link) about HOW TO FIX THE CHECK PAPER SIZE ERROR MESSAGE FOR MF5600/MF5700 SERIES LASER MULTIFUNCTIONAL
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Posted on Apr 18, 2011
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You have to go into the menu and change the setting to Legal.
here is the manual:
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