%2.9 Page Size Detection2.9 Page Size DetectionThe four tab pieces are driven according to the setting position of the paper guide through the caminterlocked with the paper guide of the paper cassette.When the paper cassette is inserted into the printer, the state of the tab pieces is detected by themicroswitch to recognize the paper size.State of MicroswitchesSW1 SW2 SW3 SW4 Paper size0 1 1 1 Letter0 1 0 1 Executive0 0 1 1 A41 1 1 0 Legal 141 0 1 1 Legal 131 1 0 1 B51 1 0 0 A51 0 0 1 A6