Remove the puncher waste boxCAUTIONBe careful when you handle optional units that are attached to the machine. When you openthe door or cover of an optional unit to replace a staple cartridge, discard the punch waste, orclear paper jams or staple jams, prints may still be output if other optional units are operatingnormally, and are not involved in the paper or staple jam removal procedure.NOTEWhen the puncher waste box is full, you cannot use the punch function when you perform acopy job or print job.Remove the punch waste boxStep Action Illustration1 Open the front door of the stacker/stapler.2 Pull out the puncher waste box.3 Discard the punch waste into a commondustbin.4 Put the puncher waste box back.Make sure that you insert the puncherwaste box as far as possible.NOTEIf the puncher waste box is notsecurely in place, you cannotuse the punch function whenyou carry out a copy job or printjob. 4Remove the puncher waste boxChapter 3 - Use the stacker/stapler 27Canon Finisher-AK1/Saddle Finisher-AK2/Puncher Unit-BT1/BU1Operation Guide Finisher-AK1, Saddle Finisher-AK2, Puncher Unit-BT1-BU1: VarioPrint (VP) 110, VP120, VP135 - Edition 2013-06