Church called, no dealer in the area and there copier reads add toner , they have placed a new cartridge in the unit, any suggestions, we are a KM dealer, ewilling to try but no knowledge of the unit.

These machines were known for the developer "dying" and not making a dark enough patch so the machine would falsely ask to "add toner" another cause is the use of non-oem toner which does not have the density to produce a good solid. Suggestion: replace the developer (ricoh type 410) and run sp mode 65. we usually found that the developer would last about 40K, anything after that is "gravy"