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Re: resetting the photoconductor unit
You need to enter service mode and the # is SP 5-912-1 set this to 0 (to get in to service mode press in sequence clear modes 1 0 7 and hold red stop for 5 or so sec. At the top of the screen should be direct SP highlight this and press the 59121 and it will take you right there.-Carl
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84 replace photoconductor on the display indicates that the photoconductor has reached its expected life rating. You may continue to print but will be at risk for developing print quality issues. It is recommended that photoconductor unit be replaced. After replacing a photoconductor unit, you will also need to manually reset the PC counter,
THE MAINTENANCE PROMPT COULD BE TURNED OFF BUT THAT IS AGAINST THE MANUFACTUREERS RECOMENDATION. THE PCU
WOULD LAST A LITTLE LONGER BUT IT WILL START DUMPING TONER AND DEVELOPER IN TRAY1 IF IT ISNT ALREADY THAT JUST ADDS TO THE CLEANUP TIME AND COST THE PCU WAS DESIGNED TO MAKE 60,000 PAGES.
The machine should automatically recognize the new PCU. Blank copies would lead me to think you have further problems, charge corona? transfer issues? If you try to make a copy and open the front door real fast when the paper should be at the transfer unit, is there an toner image showing on the drum? If yes, then you have charge but not getting transfer. This is a hard problem to troubleshoot without seeing machine. Anyway good luck, please rate this. Thanks ..... Wait... just had a thought. On the shaft, on the inside of the rear frame, that drives the drum there is a coupling that is spring loaded. Sometimes the shaft gets gunked up and coupling does not pop out not connecting to the PCU, which could cause blank copies and will still say replace pcu. You could add a couple of drops of oil to that shaft to loosen it up if that's the case.
IF you replaced the entire PCU, make sure you pulled the plastic tabs from the unit and removed the protective paper from the drum area. I don't remember if the new PCU comes with developer pre-installed. If you replaced the drum/developer, it is common for the lower developer unit drive gears to wear down and break off some of their teeth.