41316401TH Rev.4 37 /• When the toner low condition is detected 20 consecutive times, toner low is determined.(The toner low message is displayed when about 500 A4 sheets at 5% density have beenprinted after toner low had been detected.)• When the toner full condition is detected 10 consecutive times, toner low is removed.• When the toner sensor remains unchanged for more than 15 cycles of 2.3 seconds, the tonersensor alarm is activated.• The toner sensor does not perform the detection while the drum motor is not running.2.11 Page Size DetectionVia the cam moves jointly with the paper guide of the paper cassette, the four tab pieces are drivenaccording to the set position of the paper guide.Upon installation of the paper cassette, the microswitch detects the condition of the tab pieces andthe paper size is recognized.TNRSNS t1<1.08TNRSNST=2.3t1t1>1.08T=2.3t1Toner Full Condition (12PPM)Toner Low Condition (12PPM)State of Microswitch Paper SizeSW1 SW2 SW3 SW40 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
