The reason developer gets depleted is from over life consumables, usually drums shorting out. Can also be over life trans belt but very rare. Usually...
I had a parts machine with a good MFP. I brought it with me just in case. After trying firmware first, then trying firmware reset tool and still not...
I'm old school and still use a Platt hard case. Every time I tried the soft shoulder case I will need something that I use to carry in the hard case...
Really strange all of a sudden there are weird quality issues. 2 machines in same week showing "0"% toner levels. All the 4 series I've worked on and...
Did you try black drum and developer unit from another good machine? With those units in machine go into service mode and initialize the machine. Do...
Perhaps English language is the problem but as tsb posted you need to provide more information. What sensor did you replace? Without more details no...