Originally Posted by
Techace
My friend, i am telling you my true story of fighting against this code. seven days before a customer call me to repair a machine 7020 having code f-26-3. i changed developer but "L detect shows 0006" and machine showing the same code then i clean sensor in developer unit, sensor in drum unit near cleaning blade and then i clean toner unit (behind the machine) and flush all toner from toner unit and change tds. but machine is same. THEN I OPENED THE BACKSIDE COVER OF THE MACHINE AND I CHANGED ONE CHIP (ONE THE BOARD YOU CAN SEE ONE BATTERY CHIP). THEN MACHINE STARTS WORKING AND MY PROBLEM SOLVED. now i am using same old drum and developer but no error code.
i am very happy.
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