Oki Data CONFIDENTIAL43605601TH Rev. 1 200 /7.5.2.(13) Toner cartridge is not recognized (Error 540, 541, 542, 543)(13-1) Consumable error(13-2) Toner sensor errorConfirmation Items Confirmation Tasks Action at NG(13-1-1) Mouting condition of ConsumableID unit and toner cartridge Is ID unit set in position?Check whether lock lever oftoner cartridge is locked.Reset normally.Confirmation Items Confirmation Tasks Action at NG(13-2-1) Toner sensor conditionToner sensor Does the core of toner sensor get dirty from toner? Wipe the dirt ofsensor off.Toner sensor By using the switch scanning test function of themaintenance utility, check whether the sensor isnormal. Check whether the SCAN condition ischanged with a white paper covering in front of sensor.Furthermore, start the printer with right side coverremoved, and check whether the red lamp of tonersensor blinks over PRE board.Replace the tonersensor board (PREPCB) or main boardM32 PCB) or FFCbetween PRE-M32with new one.
