Brother International HL-2400C Service Manual - Page 310

5. HOW TO RE-ENTER ORIGINAL DATA TO THE MCTL PCB CAUTION Actions 1) and 2) MUST be carried out BEFORE the MCTL PCB is removed or the NVRAM initialized otherwise ALL READINGS WILL BE LOST. 1) Go into the Engine Controller Mode. (Refer to Section 3 "ENGINE CONTROLLER MODE" of Chapter V.) 2) Before initializing the NV-RAM or replacing the MCTL PCB, record the following values; i) Display TOTAL PAGE to record the value. (i.e.) TOTAL PAGE (T) = 412P ii) Display EACH IMAGE to record the values. (i.e.) EACH IMAGE (IY)=348P (IM)=353P (IC)=365P (IK)=439P iii) Display NEXT CARE to record the values. (i.e.) FC ROLL (NC2) = 12,050P BL UNIT (NC7) = 49,135P FU UNIT (NC8) = 39,684P 120K KIT (NC9) = 120,000P iv) Display LIFE PERIOD SET of FACTORY MODE to record the values. (i.e.) FC ROLL (LP2) = 12,000P BL UNIT (LP7) = 50,000P FU UNIT (LP8) = 60,100P 120K KIT (LP9) = 120,000P 3) When you have recorded all the values above, initialize the data in the NV-RAM on the MCTL PCB or replace the MCTL PCB. After initializing all the data in the NV-RAM on the MCTL PCB, or replacing the MCTL PCB, all the original counter values for the cleaning roller, OPC belt cartridge, fusing unit, and 120K kit should be re-entered as below; The method used to correct the counters is to reset the page counter to a calculated TOTAL PAGE value and then to perform a CLEAR CARE for the item to reset the NEXT CARE for that item to the value recorded in 2) iii). The basic formula used in these calculations is:- TOTAL PAGE = NEXT CARE - LIFE PERIOD Where this formula would result in a negative number, the LIFE PERIOD should be temporarily set to a lower value so that the result is a positive number and then this number and LIFE PERIOD used to perform the CLEAR CARE to reset the NEXT CARE counter. A-8